diff --git a/debugger.html b/debugger.html
index 24f8aea5..f152d9e1 100644
--- a/debugger.html
+++ b/debugger.html
@@ -14,8 +14,197 @@
 <!-- Fake favicon, to avoid extra request to server -->
 <link rel="icon" href="data:;base64,iVBORw0KGgo=">
 <title>React Native Debugger</title>
-<script>
+<script src="/debugger-ui/static/Chart.min.js"></script>
+<script src="/debugger-ui/static/react-0.13.3.min.js"></script>
+<script src="/debugger-ui/static/JSXTransformer-0.13.3.js"></script>
+<script type="text/jsx">
 (function() {
+var ws;
+var metricsIntervalId, metricsCollectionEnabled;
+var cpuChart, memoryChart, jsCallsChart, latestLabel;
+var batchedJSCalls = [];
+var numJsCalls = 0;
+
+var canvas = document.getElementById('cpu-utilization');
+var ctx = canvas.getContext('2d');
+
+var memoryCanvas = document.getElementById('memory-utilization');
+var memoryCtx = memoryCanvas.getContext('2d');
+
+var jsCallsCanvas = document.getElementById("js-calls-graph");
+var jsCallsCtx = jsCallsCanvas.getContext('2d');
+
+var numPoints = 20;
+var labels = [];
+var data = [];
+for (var i = 1; i < numPoints + 1; i++) {
+  labels.push('');
+  data.push(0);
+}
+
+var cpuStartingData = {
+  labels: labels,
+  datasets: [
+    {
+      fillColor: "rgba(113,188,120,0.2)",
+      strokeColor: "rgba(113,188,120,1)",
+      pointColor: "rgba(113, 188,120,1)",
+      pointStrokeColor: "#fff",
+      data: data
+    }
+  ]
+};
+
+var memoryStartingData = {
+  labels: labels,
+  datasets: [
+    {
+      label: "Resident Memory (MB)",
+      fillColor: "rgba(220,220,220,0.2)",
+      strokeColor: "rgba(220,220,220,1)",
+      pointColor: "rgba(220,220,220,1)",
+      pointStrokeColor: "#fff",
+      pointHighlightFill: "#fff",
+      pointHighlightStroke: "rgba(220,220,220,1)",
+      data: data
+    },
+    {
+      label: "Virtual Memory (MB)",
+      fillColor: "rgba(151,187,205,0.2)",
+      strokeColor: "rgba(151,187,205,1)",
+      pointColor: "rgba(151,187,205,1)",
+      pointStrokeColor: "#fff",
+      pointHighlightFill: "#fff",
+      pointHighlightStroke: "rgba(151,187,205,1)",
+      data: data
+    }
+  ]
+};
+
+
+var jsCallsStartingData = {
+  labels: labels,
+  datasets: [
+    {
+      fillColor: "rgba(238,210,2,0.2)",
+      strokeColor: "rgba(238,210,2,1)",
+      pointColor: "rgba(238,210,2,1)",
+      pointStrokeColor: "#fff",
+      data: data
+    }
+  ]
+};
+
+latestLabel = cpuStartingData.labels[numPoints - 1];
+// Reduce the animation steps for demo clarity.
+cpuChart = new Chart(ctx).Line(cpuStartingData, {
+  scaleOverride: true,
+  scaleSteps: 10,
+  scaleStepWidth: 10,
+  scaleStartValue: 0,
+  animation: false
+});
+
+memoryChart = new Chart(memoryCtx).Line(memoryStartingData, {
+  animation: false
+});
+
+document.getElementById("memory-legend").innerHTML = memoryChart.generateLegend();
+
+jsCallsChart = new Chart(jsCallsCtx).Bar(jsCallsStartingData, {
+  animation: false
+});
+
+function toggleMetrics(enable) {
+  if (metricsIntervalId) {
+    debuggerClearInterval(metricsIntervalId);
+  }
+  if (enable) {
+    // request metrics once every second
+    metricsIntervalId = debuggerSetInterval(function () {
+      ws.send(JSON.stringify({method: "requestMetrics"}));
+    }, 1000);
+  }
+  metricsCollectionEnabled = enable;
+}
+
+var MetricsToggle = React.createClass({
+  handleClick: function () {
+    var enabled = !this.props.metricsEnabled;
+    this.setProps({
+      metricsEnabled:enabled
+    });
+    toggleMetrics(enabled);
+  },
+
+  buttonText: function () {
+    if (this.props.metricsEnabled) {
+      return "Disable Metrics Collection"
+    } else {
+      return "Enable Metrics Collection"
+    }
+  },
+  render: function() {
+    return (
+      <input type="button" onClick={this.handleClick} value={this.buttonText()} />
+    );
+  }
+});
+
+React.render(
+  <MetricsToggle metricsEnabled={true}/>,
+  document.getElementById('metrics-toggle')
+);
+
+var JSCall = React.createClass({
+  render: function() {
+    return (
+      <ul>
+        {this.props.data.map(function (subCall) {
+          return (
+            <li>{subCall.method}<em>"{subCall.args[0]}"</em></li>
+          )
+        })}
+      </ul>
+    );
+  }
+});
+
+var JSCallsList = React.createClass({
+  render: function() {
+    return (
+      <ul>
+        {this.props.data.map(function (batch) {
+          if (!batch.arguments.length) {
+            return (
+              <li>
+                {batch.moduleMethod}
+              </li>
+            )
+          } else {
+            return (
+              <li>
+                {batch.moduleMethod}
+                <JSCall data={batch.arguments[0]}></JSCall>
+              </li>
+            )
+          }
+        })}
+      </ul>
+    );
+  }
+});
+
+var jsCallsComponent = React.render(
+  <JSCallsList data={[]}/>,
+  document.getElementById('js-calls')
+);
+
+function countJSCalls(batch) {
+  return batch.arguments.reduce(function (p, c) {
+    return p + c.length;
+  }, 0);
+}
 
 var sessionID = window.localStorage.getItem('sessionID');
 window.localStorage.removeItem('sessionID');
@@ -36,6 +225,8 @@ window.addEventListener('load', function () {
 // Alias native implementations needed by the debugger before platform-specific
 // implementations are loaded into the global namespace
 var debuggerSetTimeout = window.setTimeout;
+var debuggerSetInterval = window.setInterval;
+var debuggerClearInterval = window.clearInterval;
 var DebuggerWebSocket = window.WebSocket;
 
 function setStatus(status) {
@@ -59,6 +250,19 @@ var messageHandlers = {
     loadScript(message.url, sendReply.bind(null, null));
   },
   'executeJSCall': function(message, sendReply) {
+    if(metricsCollectionEnabled) {
+      numJsCalls += countJSCalls(message);
+
+      batchedJSCalls.unshift(message);
+      // show the last 5 batches
+      if (batchedJSCalls.length > 5) {
+        batchedJSCalls.pop();
+      }
+
+      jsCallsComponent.setProps({
+        data: batchedJSCalls
+      });
+    }
     var returnValue = null;
     try {
       if (window && window.require) {
@@ -68,11 +272,32 @@ var messageHandlers = {
     } finally {
       sendReply(JSON.stringify(returnValue));
     }
+  },
+  'usageMetrics': function (message) {
+    cpuChart.addData([message.deviceCPUUsage], '');
+    // Remove the first point so we dont just add values forever
+    cpuChart.removeData();
+
+    memoryChart.addData([
+      convertToMB(message.memoryUsage.resident_size),
+      convertToMB(message.memoryUsage.virtual_size)
+    ], '');
+    // Remove the first point so we dont just add values forever
+    memoryChart.removeData();
+
+    jsCallsChart.addData([numJsCalls], '');
+    // Remove the first point so we dont just add values forever
+    jsCallsChart.removeData();
+    numJsCalls = 0;
   }
 };
 
+function convertToMB(val) {
+  return ((val / 1024) / 1024);
+}
+
 function connectToDebuggerProxy() {
-  var ws = new DebuggerWebSocket('ws://' + window.location.host + '/debugger-proxy');
+  ws = new DebuggerWebSocket('ws://' + window.location.host + '/debugger-proxy');
 
   ws.onopen = function() {
     if (sessionID) {
@@ -81,6 +306,9 @@ function connectToDebuggerProxy() {
     } else {
       setStatus('Waiting, press <span class="shortcut">⌘R</span> in simulator to reload and connect.');
     }
+
+    // start collecting metrics
+    toggleMetrics(true);
   };
 
   ws.onmessage = function(message) {
@@ -102,6 +330,9 @@ function connectToDebuggerProxy() {
     sessionID = null;
     window.localStorage.removeItem('sessionID');
     debuggerSetTimeout(connectToDebuggerProxy, 100);
+
+    // stop collecting metrics
+    toggleMetrics(false);
   };
 }
 
@@ -120,9 +351,9 @@ function loadScript(src, callback) {
 <style type="text/css">
   body {
     font-size: large;
-    margin: 0;
+    margin: 20px;
     padding: 0;
-    font-family: Helvetica, Verdana, sans-serif;
+    font-family: Helvetica Neue, Helvetica, Verdana, sans-serif;
     font-weight: 200;
   }
   .shortcut {
@@ -161,6 +392,43 @@ function loadScript(src, callback) {
   .content {
     padding: 10px;
   }
+  .legend ul {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+    font-size: 14px;
+    margin-top : 20px;
+  }
+  .legend li {
+    display: inline-block;
+    padding-left: 10px;
+  }
+  .legend span {
+    display: block;
+    width: 14px;
+    height: 14px;
+    border-radius: 7px;
+    float: left;
+    margin-top: 1px;
+    margin-right: 7px;
+  }
+  .legend {
+    margin-bottom: 40px;
+  }
+  .js-calls {
+    font-size: small;
+  }
+  .toggle-button {
+    margin-top: 15px;
+  }
+  .graph-column {
+    width: "49%";
+    display: inline-block;
+  }
+  .js-calls-column {
+    vertical-align:top;
+    margin-left: 20px;
+  }
 </style>
 </head>
 <body>
@@ -179,7 +447,31 @@ function loadScript(src, callback) {
       React Native JS code runs inside this Chrome tab.
     </p>
     <p>Press <span class="shortcut">⌘⌥J</span> to open Developer Tools. Enable <a href="http://stackoverflow.com/a/17324511/232122" target="_blank">Pause On Caught Exceptions</a> for a better debugging experience.</p>
-    <p>Status: <span id="status">Loading...</span></p>
+  <div>Status: <span id="status">Loading</span></div>
+  <div id="metrics-toggle" class="toggle-button"></div>
+  <div class="graph-column">
+    <div>
+      <h2>UI CPU Utilization</h2>
+      <div>
+        <canvas id="cpu-utilization" width="400" height="250"></canvas>
+      </div>
+    </div>
+
+    <div>
+      <h2>Memory Utilization</h2>
+      <div>
+        <canvas id="memory-utilization" width="400" height="250"></canvas>
+      </div>
+      <div id="memory-legend" class="legend"></div>
+    </div>
+  </div>
+  <div class="graph-column js-calls-column">
+    <h2>JS Calls</h2>
+    <div>
+      <canvas id="js-calls-graph" width="400" height="250"></canvas>
+    </div>
+    <div id="js-calls" class="js-calls">
+    </div>
   </div>
 </body>
 </html>
diff --git a/packager.js b/packager.js
index fcff7e58..0759f50d 100644
--- a/packager.js
+++ b/packager.js
@@ -203,6 +203,13 @@ function getDevToolsLauncher(options) {
         console.warn(stderr);
       });
       res.end('OK');
+    } else if (req.url.indexOf('/debugger-ui/static/') > -1) {
+      var fileName = req.url.replace('/debugger-ui/static/', '');
+      // NOTE: this works for a small number or external dependencies,
+      //       but will need a better solution as the project expands
+      var chartPath = path.join(__dirname + '/static/' + fileName);
+      res.writeHead(200, {'Content-Type': 'application/javascript'});
+      fs.createReadStream(chartPath).pipe(res);
     } else {
       next();
     }
diff --git a/static/Chart.min.js b/static/Chart.min.js
new file mode 100644
index 00000000..3a0a2c87
--- /dev/null
+++ b/static/Chart.min.js
@@ -0,0 +1,11 @@
+/*!
+ * Chart.js
+ * http://chartjs.org/
+ * Version: 1.0.2
+ *
+ * Copyright 2015 Nick Downie
+ * Released under the MIT license
+ * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
+ */
+(function(){"use strict";var t=this,i=t.Chart,e=function(t){this.canvas=t.canvas,this.ctx=t;var i=function(t,i){return t["offset"+i]?t["offset"+i]:document.defaultView.getComputedStyle(t).getPropertyValue(i)},e=this.width=i(t.canvas,"Width"),n=this.height=i(t.canvas,"Height");t.canvas.width=e,t.canvas.height=n;var e=this.width=t.canvas.width,n=this.height=t.canvas.height;return this.aspectRatio=this.width/this.height,s.retinaScale(this),this};e.defaults={global:{animation:!0,animationSteps:60,animationEasing:"easeOutQuart",showScale:!0,scaleOverride:!1,scaleSteps:null,scaleStepWidth:null,scaleStartValue:null,scaleLineColor:"rgba(0,0,0,.1)",scaleLineWidth:1,scaleShowLabels:!0,scaleLabel:"<%=value%>",scaleIntegersOnly:!0,scaleBeginAtZero:!1,scaleFontFamily:"'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",scaleFontSize:12,scaleFontStyle:"normal",scaleFontColor:"#666",responsive:!1,maintainAspectRatio:!0,showTooltips:!0,customTooltips:!1,tooltipEvents:["mousemove","touchstart","touchmove","mouseout"],tooltipFillColor:"rgba(0,0,0,0.8)",tooltipFontFamily:"'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",tooltipFontSize:14,tooltipFontStyle:"normal",tooltipFontColor:"#fff",tooltipTitleFontFamily:"'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",tooltipTitleFontSize:14,tooltipTitleFontStyle:"bold",tooltipTitleFontColor:"#fff",tooltipYPadding:6,tooltipXPadding:6,tooltipCaretSize:8,tooltipCornerRadius:6,tooltipXOffset:10,tooltipTemplate:"<%if (label){%><%=label%>: <%}%><%= value %>",multiTooltipTemplate:"<%= value %>",multiTooltipKeyBackground:"#fff",onAnimationProgress:function(){},onAnimationComplete:function(){}}},e.types={};var s=e.helpers={},n=s.each=function(t,i,e){var s=Array.prototype.slice.call(arguments,3);if(t)if(t.length===+t.length){var 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e.Tooltip({x:Math.round(i.x),y:Math.round(i.y),xPadding:this.options.tooltipXPadding,yPadding:this.options.tooltipYPadding,fillColor:this.options.tooltipFillColor,textColor:this.options.tooltipFontColor,fontFamily:this.options.tooltipFontFamily,fontStyle:this.options.tooltipFontStyle,fontSize:this.options.tooltipFontSize,caretHeight:this.options.tooltipCaretSize,cornerRadius:this.options.tooltipCornerRadius,text:C(this.options.tooltipTemplate,t),chart:this.chart,custom:this.options.customTooltips}).draw()},this);return this}},toBase64Image:function(){return this.chart.canvas.toDataURL.apply(this.chart.canvas,arguments)}}),e.Type.extend=function(t){var i=this,s=function(){return i.apply(this,arguments)};if(s.prototype=o(i.prototype),a(s.prototype,t),s.extend=e.Type.extend,t.name||i.prototype.name){var n=t.name||i.prototype.name,l=e.defaults[i.prototype.name]?o(e.defaults[i.prototype.name]):{};e.defaults[n]=a(l,t.defaults),e.types[n]=s,e.prototype[n]=function(t,i){var 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t=this.ctx;t.beginPath(),t.arc(this.x,this.y,this.radius,0,2*Math.PI),t.closePath(),t.strokeStyle=this.strokeColor,t.lineWidth=this.strokeWidth,t.fillStyle=this.fillColor,t.fill(),t.stroke()}}}),e.Arc=e.Element.extend({inRange:function(t,i){var e=s.getAngleFromPoint(this,{x:t,y:i}),n=e.angle>=this.startAngle&&e.angle<=this.endAngle,o=e.distance>=this.innerRadius&&e.distance<=this.outerRadius;return n&&o},tooltipPosition:function(){var t=this.startAngle+(this.endAngle-this.startAngle)/2,i=(this.outerRadius-this.innerRadius)/2+this.innerRadius;return{x:this.x+Math.cos(t)*i,y:this.y+Math.sin(t)*i}},draw:function(t){var i=this.ctx;i.beginPath(),i.arc(this.x,this.y,this.outerRadius,this.startAngle,this.endAngle),i.arc(this.x,this.y,this.innerRadius,this.endAngle,this.startAngle,!0),i.closePath(),i.strokeStyle=this.strokeColor,i.lineWidth=this.strokeWidth,i.fillStyle=this.fillColor,i.fill(),i.lineJoin="bevel",this.showStroke&&i.stroke()}}),e.Rectangle=e.Element.extend({draw:function(){var t=this.ctx,i=this.width/2,e=this.x-i,s=this.x+i,n=this.base-(this.base-this.y),o=this.strokeWidth/2;this.showStroke&&(e+=o,s-=o,n+=o),t.beginPath(),t.fillStyle=this.fillColor,t.strokeStyle=this.strokeColor,t.lineWidth=this.strokeWidth,t.moveTo(e,this.base),t.lineTo(e,n),t.lineTo(s,n),t.lineTo(s,this.base),t.fill(),this.showStroke&&t.stroke()},height:function(){return this.base-this.y},inRange:function(t,i){return t>=this.x-this.width/2&&t<=this.x+this.width/2&&i>=this.y&&i<=this.base}}),e.Tooltip=e.Element.extend({draw:function(){var t=this.chart.ctx;t.font=W(this.fontSize,this.fontStyle,this.fontFamily),this.xAlign="center",this.yAlign="above";var i=this.caretPadding=2,e=t.measureText(this.text).width+2*this.xPadding,s=this.fontSize+2*this.yPadding,n=s+this.caretHeight+i;this.x+e/2>this.chart.width?this.xAlign="left":this.x-e/2<0&&(this.xAlign="right"),this.y-n<0&&(this.yAlign="below");var o=this.x-e/2,a=this.y-n;if(t.fillStyle=this.fillColor,this.custom)this.custom(this);else{switch(this.yAlign){case"above":t.beginPath(),t.moveTo(this.x,this.y-i),t.lineTo(this.x+this.caretHeight,this.y-(i+this.caretHeight)),t.lineTo(this.x-this.caretHeight,this.y-(i+this.caretHeight)),t.closePath(),t.fill();break;case"below":a=this.y+i+this.caretHeight,t.beginPath(),t.moveTo(this.x,this.y+i),t.lineTo(this.x+this.caretHeight,this.y+i+this.caretHeight),t.lineTo(this.x-this.caretHeight,this.y+i+this.caretHeight),t.closePath(),t.fill()}switch(this.xAlign){case"left":o=this.x-e+(this.cornerRadius+this.caretHeight);break;case"right":o=this.x-(this.cornerRadius+this.caretHeight)}B(t,o,a,e,s,this.cornerRadius),t.fill(),t.fillStyle=this.textColor,t.textAlign="center",t.textBaseline="middle",t.fillText(this.text,o+e/2,a+s/2)}}}),e.MultiTooltip=e.Element.extend({initialize:function(){this.font=W(this.fontSize,this.fontStyle,this.fontFamily),this.titleFont=W(this.titleFontSize,this.titleFontStyle,this.titleFontFamily),this.height=this.labels.length*this.fontSize+(this.labels.length-1)*(this.fontSize/2)+2*this.yPadding+1.5*this.titleFontSize,this.ctx.font=this.titleFont;var 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t=this.ctx;t.fillStyle=this.fillColor,t.fill(),t.closePath(),t.textAlign="left",t.textBaseline="middle",t.fillStyle=this.titleTextColor,t.font=this.titleFont,t.fillText(this.title,this.x+this.xPadding,this.getLineHeight(0)),t.font=this.font,s.each(this.labels,function(i,e){t.fillStyle=this.textColor,t.fillText(i,this.x+this.xPadding+this.fontSize+3,this.getLineHeight(e+1)),t.fillStyle=this.legendColorBackground,t.fillRect(this.x+this.xPadding,this.getLineHeight(e+1)-this.fontSize/2,this.fontSize,this.fontSize),t.fillStyle=this.legendColors[e].fill,t.fillRect(this.x+this.xPadding,this.getLineHeight(e+1)-this.fontSize/2,this.fontSize,this.fontSize)},this)}}}),e.Scale=e.Element.extend({initialize:function(){this.fit()},buildYLabels:function(){this.yLabels=[];for(var 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t,i,e=this.ctx.measureText(this.xLabels[0]).width,s=this.ctx.measureText(this.xLabels[this.xLabels.length-1]).width;if(this.xScalePaddingRight=s/2+3,this.xScalePaddingLeft=e/2>this.yLabelWidth+10?e/2:this.yLabelWidth+10,this.xLabelRotation=0,this.display){var n,o=z(this.ctx,this.font,this.xLabels);this.xLabelWidth=o;for(var a=Math.floor(this.calculateX(1)-this.calculateX(0))-6;this.xLabelWidth>a&&0===this.xLabelRotation||this.xLabelWidth>a&&this.xLabelRotation<=90&&this.xLabelRotation>0;)n=Math.cos(S(this.xLabelRotation)),t=n*e,i=n*s,t+this.fontSize/2>this.yLabelWidth+8&&(this.xScalePaddingLeft=t+this.fontSize/2),this.xScalePaddingRight=this.fontSize/2,this.xLabelRotation++,this.xLabelWidth=n*o;this.xLabelRotation>0&&(this.endPoint-=Math.sin(S(this.xLabelRotation))*o+3)}else this.xLabelWidth=0,this.xScalePaddingRight=this.padding,this.xScalePaddingLeft=this.padding},calculateYRange:c,drawingArea:function(){return this.startPoint-this.endPoint},calculateY:function(t){var i=this.drawingArea()/(this.min-this.max);return this.endPoint-i*(t-this.min)},calculateX:function(t){var i=(this.xLabelRotation>0,this.width-(this.xScalePaddingLeft+this.xScalePaddingRight)),e=i/Math.max(this.valuesCount-(this.offsetGridLines?0:1),1),s=e*t+this.xScalePaddingLeft;return this.offsetGridLines&&(s+=e/2),Math.round(s)},update:function(t){s.extend(this,t),this.fit()},draw:function(){var t=this.ctx,i=(this.endPoint-this.startPoint)/this.steps,e=Math.round(this.xScalePaddingLeft);this.display&&(t.fillStyle=this.textColor,t.font=this.font,n(this.yLabels,function(n,o){var a=this.endPoint-i*o,h=Math.round(a),l=this.showHorizontalLines;t.textAlign="right",t.textBaseline="middle",this.showLabels&&t.fillText(n,e-10,a),0!==o||l||(l=!0),l&&t.beginPath(),o>0?(t.lineWidth=this.gridLineWidth,t.strokeStyle=this.gridLineColor):(t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor),h+=s.aliasPixel(t.lineWidth),l&&(t.moveTo(e,h),t.lineTo(this.width,h),t.stroke(),t.closePath()),t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor,t.beginPath(),t.moveTo(e-5,h),t.lineTo(e,h),t.stroke(),t.closePath()},this),n(this.xLabels,function(i,e){var s=this.calculateX(e)+x(this.lineWidth),n=this.calculateX(e-(this.offsetGridLines?.5:0))+x(this.lineWidth),o=this.xLabelRotation>0,a=this.showVerticalLines;0!==e||a||(a=!0),a&&t.beginPath(),e>0?(t.lineWidth=this.gridLineWidth,t.strokeStyle=this.gridLineColor):(t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor),a&&(t.moveTo(n,this.endPoint),t.lineTo(n,this.startPoint-3),t.stroke(),t.closePath()),t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor,t.beginPath(),t.moveTo(n,this.endPoint),t.lineTo(n,this.endPoint+5),t.stroke(),t.closePath(),t.save(),t.translate(s,o?this.endPoint+12:this.endPoint+8),t.rotate(-1*S(this.xLabelRotation)),t.font=this.font,t.textAlign=o?"right":"center",t.textBaseline=o?"middle":"top",t.fillText(i,0,0),t.restore()},this))}}),e.RadialScale=e.Element.extend({initialize:function(){this.size=m([this.height,this.width]),this.drawingArea=this.display?this.size/2-(this.fontSize/2+this.backdropPaddingY):this.size/2},calculateCenterOffset:function(t){var i=this.drawingArea/(this.max-this.min);return(t-this.min)*i},update:function(){this.lineArc?this.drawingArea=this.display?this.size/2-(this.fontSize/2+this.backdropPaddingY):this.size/2:this.setScaleSize(),this.buildYLabels()},buildYLabels:function(){this.yLabels=[];for(var t=v(this.stepValue),i=0;i<=this.steps;i++)this.yLabels.push(C(this.templateString,{value:(this.min+i*this.stepValue).toFixed(t)}))},getCircumference:function(){return 2*Math.PI/this.valuesCount},setScaleSize:function(){var t,i,e,s,n,o,a,h,l,r,c,u,d=m([this.height/2-this.pointLabelFontSize-5,this.width/2]),p=this.width,g=0;for(this.ctx.font=W(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily),i=0;i<this.valuesCount;i++)t=this.getPointPosition(i,d),e=this.ctx.measureText(C(this.templateString,{value:this.labels[i]})).width+5,0===i||i===this.valuesCount/2?(s=e/2,t.x+s>p&&(p=t.x+s,n=i),t.x-s<g&&(g=t.x-s,a=i)):i<this.valuesCount/2?t.x+e>p&&(p=t.x+e,n=i):i>this.valuesCount/2&&t.x-e<g&&(g=t.x-e,a=i);l=g,r=Math.ceil(p-this.width),o=this.getIndexAngle(n),h=this.getIndexAngle(a),c=r/Math.sin(o+Math.PI/2),u=l/Math.sin(h+Math.PI/2),c=f(c)?c:0,u=f(u)?u:0,this.drawingArea=d-(u+c)/2,this.setCenterPoint(u,c)},setCenterPoint:function(t,i){var e=this.width-i-this.drawingArea,s=t+this.drawingArea;this.xCenter=(s+e)/2,this.yCenter=this.height/2},getIndexAngle:function(t){var i=2*Math.PI/this.valuesCount;return t*i-Math.PI/2},getPointPosition:function(t,i){var e=this.getIndexAngle(t);return{x:Math.cos(e)*i+this.xCenter,y:Math.sin(e)*i+this.yCenter}},draw:function(){if(this.display){var t=this.ctx;if(n(this.yLabels,function(i,e){if(e>0){var s,n=e*(this.drawingArea/this.steps),o=this.yCenter-n;if(this.lineWidth>0)if(t.strokeStyle=this.lineColor,t.lineWidth=this.lineWidth,this.lineArc)t.beginPath(),t.arc(this.xCenter,this.yCenter,n,0,2*Math.PI),t.closePath(),t.stroke();else{t.beginPath();for(var a=0;a<this.valuesCount;a++)s=this.getPointPosition(a,this.calculateCenterOffset(this.min+e*this.stepValue)),0===a?t.moveTo(s.x,s.y):t.lineTo(s.x,s.y);t.closePath(),t.stroke()}if(this.showLabels){if(t.font=W(this.fontSize,this.fontStyle,this.fontFamily),this.showLabelBackdrop){var h=t.measureText(i).width;t.fillStyle=this.backdropColor,t.fillRect(this.xCenter-h/2-this.backdropPaddingX,o-this.fontSize/2-this.backdropPaddingY,h+2*this.backdropPaddingX,this.fontSize+2*this.backdropPaddingY)}t.textAlign="center",t.textBaseline="middle",t.fillStyle=this.fontColor,t.fillText(i,this.xCenter,o)}}},this),!this.lineArc){t.lineWidth=this.angleLineWidth,t.strokeStyle=this.angleLineColor;for(var i=this.valuesCount-1;i>=0;i--){if(this.angleLineWidth>0){var e=this.getPointPosition(i,this.calculateCenterOffset(this.max));t.beginPath(),t.moveTo(this.xCenter,this.yCenter),t.lineTo(e.x,e.y),t.stroke(),t.closePath()}var s=this.getPointPosition(i,this.calculateCenterOffset(this.max)+5);t.font=W(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily),t.fillStyle=this.pointLabelFontColor;var o=this.labels.length,a=this.labels.length/2,h=a/2,l=h>i||i>o-h,r=i===h||i===o-h;t.textAlign=0===i?"center":i===a?"center":a>i?"left":"right",t.textBaseline=r?"middle":l?"bottom":"top",t.fillText(this.labels[i],s.x,s.y)}}}}}),s.addEvent(window,"resize",function(){var t;return function(){clearTimeout(t),t=setTimeout(function(){n(e.instances,function(t){t.options.responsive&&t.resize(t.render,!0)})},50)}}()),p?define(function(){return e}):"object"==typeof module&&module.exports&&(module.exports=e),t.Chart=e,e.noConflict=function(){return t.Chart=i,e}}).call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={scaleBeginAtZero:!0,scaleShowGridLines:!0,scaleGridLineColor:"rgba(0,0,0,.05)",scaleGridLineWidth:1,scaleShowHorizontalLines:!0,scaleShowVerticalLines:!0,barShowStroke:!0,barStrokeWidth:2,barValueSpacing:5,barDatasetSpacing:1,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].fillColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"Bar",defaults:s,initialize:function(t){var s=this.options;this.ScaleClass=i.Scale.extend({offsetGridLines:!0,calculateBarX:function(t,i,e){var n=this.calculateBaseWidth(),o=this.calculateX(e)-n/2,a=this.calculateBarWidth(t);return o+a*i+i*s.barDatasetSpacing+a/2},calculateBaseWidth:function(){return this.calculateX(1)-this.calculateX(0)-2*s.barValueSpacing},calculateBarWidth:function(t){var i=this.calculateBaseWidth()-(t-1)*s.barDatasetSpacing;return i/t}}),this.datasets=[],this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getBarsAtEvent(t):[];this.eachBars(function(t){t.restore(["fillColor","strokeColor"])}),e.each(i,function(t){t.fillColor=t.highlightFill,t.strokeColor=t.highlightStroke}),this.showTooltip(i)}),this.BarClass=i.Rectangle.extend({strokeWidth:this.options.barStrokeWidth,showStroke:this.options.barShowStroke,ctx:this.chart.ctx}),e.each(t.datasets,function(i){var s={label:i.label||null,fillColor:i.fillColor,strokeColor:i.strokeColor,bars:[]};this.datasets.push(s),e.each(i.data,function(e,n){s.bars.push(new this.BarClass({value:e,label:t.labels[n],datasetLabel:i.label,strokeColor:i.strokeColor,fillColor:i.fillColor,highlightFill:i.highlightFill||i.fillColor,highlightStroke:i.highlightStroke||i.strokeColor}))},this)},this),this.buildScale(t.labels),this.BarClass.prototype.base=this.scale.endPoint,this.eachBars(function(t,i,s){e.extend(t,{width:this.scale.calculateBarWidth(this.datasets.length),x:this.scale.calculateBarX(this.datasets.length,s,i),y:this.scale.endPoint}),t.save()},this),this.render()},update:function(){this.scale.update(),e.each(this.activeElements,function(t){t.restore(["fillColor","strokeColor"])}),this.eachBars(function(t){t.save()}),this.render()},eachBars:function(t){e.each(this.datasets,function(i,s){e.each(i.bars,t,this,s)},this)},getBarsAtEvent:function(t){for(var i,s=[],n=e.getRelativePosition(t),o=function(t){s.push(t.bars[i])},a=0;a<this.datasets.length;a++)for(i=0;i<this.datasets[a].bars.length;i++)if(this.datasets[a].bars[i].inRange(n.x,n.y))return e.each(this.datasets,o),s;return s},buildScale:function(t){var i=this,s=function(){var t=[];return i.eachBars(function(i){t.push(i.value)}),t},n={templateString:this.options.scaleLabel,height:this.chart.height,width:this.chart.width,ctx:this.chart.ctx,textColor:this.options.scaleFontColor,fontSize:this.options.scaleFontSize,fontStyle:this.options.scaleFontStyle,fontFamily:this.options.scaleFontFamily,valuesCount:t.length,beginAtZero:this.options.scaleBeginAtZero,integersOnly:this.options.scaleIntegersOnly,calculateYRange:function(t){var i=e.calculateScaleRange(s(),t,this.fontSize,this.beginAtZero,this.integersOnly);e.extend(this,i)},xLabels:t,font:e.fontString(this.options.scaleFontSize,this.options.scaleFontStyle,this.options.scaleFontFamily),lineWidth:this.options.scaleLineWidth,lineColor:this.options.scaleLineColor,showHorizontalLines:this.options.scaleShowHorizontalLines,showVerticalLines:this.options.scaleShowVerticalLines,gridLineWidth:this.options.scaleShowGridLines?this.options.scaleGridLineWidth:0,gridLineColor:this.options.scaleShowGridLines?this.options.scaleGridLineColor:"rgba(0,0,0,0)",padding:this.options.showScale?0:this.options.barShowStroke?this.options.barStrokeWidth:0,showLabels:this.options.scaleShowLabels,display:this.options.showScale};this.options.scaleOverride&&e.extend(n,{calculateYRange:e.noop,steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}),this.scale=new this.ScaleClass(n)},addData:function(t,i){e.each(t,function(t,e){this.datasets[e].bars.push(new this.BarClass({value:t,label:i,x:this.scale.calculateBarX(this.datasets.length,e,this.scale.valuesCount+1),y:this.scale.endPoint,width:this.scale.calculateBarWidth(this.datasets.length),base:this.scale.endPoint,strokeColor:this.datasets[e].strokeColor,fillColor:this.datasets[e].fillColor}))
+},this),this.scale.addXLabel(i),this.update()},removeData:function(){this.scale.removeXLabel(),e.each(this.datasets,function(t){t.bars.shift()},this),this.update()},reflow:function(){e.extend(this.BarClass.prototype,{y:this.scale.endPoint,base:this.scale.endPoint});var t=e.extend({height:this.chart.height,width:this.chart.width});this.scale.update(t)},draw:function(t){var i=t||1;this.clear();this.chart.ctx;this.scale.draw(i),e.each(this.datasets,function(t,s){e.each(t.bars,function(t,e){t.hasValue()&&(t.base=this.scale.endPoint,t.transition({x:this.scale.calculateBarX(this.datasets.length,s,e),y:this.scale.calculateY(t.value),width:this.scale.calculateBarWidth(this.datasets.length)},i).draw())},this)},this)}})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={segmentShowStroke:!0,segmentStrokeColor:"#fff",segmentStrokeWidth:2,percentageInnerCutout:50,animationSteps:100,animationEasing:"easeOutBounce",animateRotate:!0,animateScale:!1,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<segments.length; i++){%><li><span style="background-color:<%=segments[i].fillColor%>"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"Doughnut",defaults:s,initialize:function(t){this.segments=[],this.outerRadius=(e.min([this.chart.width,this.chart.height])-this.options.segmentStrokeWidth/2)/2,this.SegmentArc=i.Arc.extend({ctx:this.chart.ctx,x:this.chart.width/2,y:this.chart.height/2}),this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getSegmentsAtEvent(t):[];e.each(this.segments,function(t){t.restore(["fillColor"])}),e.each(i,function(t){t.fillColor=t.highlightColor}),this.showTooltip(i)}),this.calculateTotal(t),e.each(t,function(t,i){this.addData(t,i,!0)},this),this.render()},getSegmentsAtEvent:function(t){var i=[],s=e.getRelativePosition(t);return e.each(this.segments,function(t){t.inRange(s.x,s.y)&&i.push(t)},this),i},addData:function(t,i,e){var s=i||this.segments.length;this.segments.splice(s,0,new this.SegmentArc({value:t.value,outerRadius:this.options.animateScale?0:this.outerRadius,innerRadius:this.options.animateScale?0:this.outerRadius/100*this.options.percentageInnerCutout,fillColor:t.color,highlightColor:t.highlight||t.color,showStroke:this.options.segmentShowStroke,strokeWidth:this.options.segmentStrokeWidth,strokeColor:this.options.segmentStrokeColor,startAngle:1.5*Math.PI,circumference:this.options.animateRotate?0:this.calculateCircumference(t.value),label:t.label})),e||(this.reflow(),this.update())},calculateCircumference:function(t){return 2*Math.PI*(Math.abs(t)/this.total)},calculateTotal:function(t){this.total=0,e.each(t,function(t){this.total+=Math.abs(t.value)},this)},update:function(){this.calculateTotal(this.segments),e.each(this.activeElements,function(t){t.restore(["fillColor"])}),e.each(this.segments,function(t){t.save()}),this.render()},removeData:function(t){var i=e.isNumber(t)?t:this.segments.length-1;this.segments.splice(i,1),this.reflow(),this.update()},reflow:function(){e.extend(this.SegmentArc.prototype,{x:this.chart.width/2,y:this.chart.height/2}),this.outerRadius=(e.min([this.chart.width,this.chart.height])-this.options.segmentStrokeWidth/2)/2,e.each(this.segments,function(t){t.update({outerRadius:this.outerRadius,innerRadius:this.outerRadius/100*this.options.percentageInnerCutout})},this)},draw:function(t){var i=t?t:1;this.clear(),e.each(this.segments,function(t,e){t.transition({circumference:this.calculateCircumference(t.value),outerRadius:this.outerRadius,innerRadius:this.outerRadius/100*this.options.percentageInnerCutout},i),t.endAngle=t.startAngle+t.circumference,t.draw(),0===e&&(t.startAngle=1.5*Math.PI),e<this.segments.length-1&&(this.segments[e+1].startAngle=t.endAngle)},this)}}),i.types.Doughnut.extend({name:"Pie",defaults:e.merge(s,{percentageInnerCutout:0})})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={scaleShowGridLines:!0,scaleGridLineColor:"rgba(0,0,0,.05)",scaleGridLineWidth:1,scaleShowHorizontalLines:!0,scaleShowVerticalLines:!0,bezierCurve:!0,bezierCurveTension:.4,pointDot:!0,pointDotRadius:4,pointDotStrokeWidth:1,pointHitDetectionRadius:20,datasetStroke:!0,datasetStrokeWidth:2,datasetFill:!0,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].strokeColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"Line",defaults:s,initialize:function(t){this.PointClass=i.Point.extend({strokeWidth:this.options.pointDotStrokeWidth,radius:this.options.pointDotRadius,display:this.options.pointDot,hitDetectionRadius:this.options.pointHitDetectionRadius,ctx:this.chart.ctx,inRange:function(t){return Math.pow(t-this.x,2)<Math.pow(this.radius+this.hitDetectionRadius,2)}}),this.datasets=[],this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getPointsAtEvent(t):[];this.eachPoints(function(t){t.restore(["fillColor","strokeColor"])}),e.each(i,function(t){t.fillColor=t.highlightFill,t.strokeColor=t.highlightStroke}),this.showTooltip(i)}),e.each(t.datasets,function(i){var s={label:i.label||null,fillColor:i.fillColor,strokeColor:i.strokeColor,pointColor:i.pointColor,pointStrokeColor:i.pointStrokeColor,points:[]};this.datasets.push(s),e.each(i.data,function(e,n){s.points.push(new this.PointClass({value:e,label:t.labels[n],datasetLabel:i.label,strokeColor:i.pointStrokeColor,fillColor:i.pointColor,highlightFill:i.pointHighlightFill||i.pointColor,highlightStroke:i.pointHighlightStroke||i.pointStrokeColor}))},this),this.buildScale(t.labels),this.eachPoints(function(t,i){e.extend(t,{x:this.scale.calculateX(i),y:this.scale.endPoint}),t.save()},this)},this),this.render()},update:function(){this.scale.update(),e.each(this.activeElements,function(t){t.restore(["fillColor","strokeColor"])}),this.eachPoints(function(t){t.save()}),this.render()},eachPoints:function(t){e.each(this.datasets,function(i){e.each(i.points,t,this)},this)},getPointsAtEvent:function(t){var i=[],s=e.getRelativePosition(t);return e.each(this.datasets,function(t){e.each(t.points,function(t){t.inRange(s.x,s.y)&&i.push(t)})},this),i},buildScale:function(t){var s=this,n=function(){var t=[];return s.eachPoints(function(i){t.push(i.value)}),t},o={templateString:this.options.scaleLabel,height:this.chart.height,width:this.chart.width,ctx:this.chart.ctx,textColor:this.options.scaleFontColor,fontSize:this.options.scaleFontSize,fontStyle:this.options.scaleFontStyle,fontFamily:this.options.scaleFontFamily,valuesCount:t.length,beginAtZero:this.options.scaleBeginAtZero,integersOnly:this.options.scaleIntegersOnly,calculateYRange:function(t){var i=e.calculateScaleRange(n(),t,this.fontSize,this.beginAtZero,this.integersOnly);e.extend(this,i)},xLabels:t,font:e.fontString(this.options.scaleFontSize,this.options.scaleFontStyle,this.options.scaleFontFamily),lineWidth:this.options.scaleLineWidth,lineColor:this.options.scaleLineColor,showHorizontalLines:this.options.scaleShowHorizontalLines,showVerticalLines:this.options.scaleShowVerticalLines,gridLineWidth:this.options.scaleShowGridLines?this.options.scaleGridLineWidth:0,gridLineColor:this.options.scaleShowGridLines?this.options.scaleGridLineColor:"rgba(0,0,0,0)",padding:this.options.showScale?0:this.options.pointDotRadius+this.options.pointDotStrokeWidth,showLabels:this.options.scaleShowLabels,display:this.options.showScale};this.options.scaleOverride&&e.extend(o,{calculateYRange:e.noop,steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}),this.scale=new i.Scale(o)},addData:function(t,i){e.each(t,function(t,e){this.datasets[e].points.push(new this.PointClass({value:t,label:i,x:this.scale.calculateX(this.scale.valuesCount+1),y:this.scale.endPoint,strokeColor:this.datasets[e].pointStrokeColor,fillColor:this.datasets[e].pointColor}))},this),this.scale.addXLabel(i),this.update()},removeData:function(){this.scale.removeXLabel(),e.each(this.datasets,function(t){t.points.shift()},this),this.update()},reflow:function(){var t=e.extend({height:this.chart.height,width:this.chart.width});this.scale.update(t)},draw:function(t){var i=t||1;this.clear();var s=this.chart.ctx,n=function(t){return null!==t.value},o=function(t,i,s){return e.findNextWhere(i,n,s)||t},a=function(t,i,s){return e.findPreviousWhere(i,n,s)||t};this.scale.draw(i),e.each(this.datasets,function(t){var h=e.where(t.points,n);e.each(t.points,function(t,e){t.hasValue()&&t.transition({y:this.scale.calculateY(t.value),x:this.scale.calculateX(e)},i)},this),this.options.bezierCurve&&e.each(h,function(t,i){var s=i>0&&i<h.length-1?this.options.bezierCurveTension:0;t.controlPoints=e.splineCurve(a(t,h,i),t,o(t,h,i),s),t.controlPoints.outer.y>this.scale.endPoint?t.controlPoints.outer.y=this.scale.endPoint:t.controlPoints.outer.y<this.scale.startPoint&&(t.controlPoints.outer.y=this.scale.startPoint),t.controlPoints.inner.y>this.scale.endPoint?t.controlPoints.inner.y=this.scale.endPoint:t.controlPoints.inner.y<this.scale.startPoint&&(t.controlPoints.inner.y=this.scale.startPoint)},this),s.lineWidth=this.options.datasetStrokeWidth,s.strokeStyle=t.strokeColor,s.beginPath(),e.each(h,function(t,i){if(0===i)s.moveTo(t.x,t.y);else if(this.options.bezierCurve){var e=a(t,h,i);s.bezierCurveTo(e.controlPoints.outer.x,e.controlPoints.outer.y,t.controlPoints.inner.x,t.controlPoints.inner.y,t.x,t.y)}else s.lineTo(t.x,t.y)},this),s.stroke(),this.options.datasetFill&&h.length>0&&(s.lineTo(h[h.length-1].x,this.scale.endPoint),s.lineTo(h[0].x,this.scale.endPoint),s.fillStyle=t.fillColor,s.closePath(),s.fill()),e.each(h,function(t){t.draw()})},this)}})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={scaleShowLabelBackdrop:!0,scaleBackdropColor:"rgba(255,255,255,0.75)",scaleBeginAtZero:!0,scaleBackdropPaddingY:2,scaleBackdropPaddingX:2,scaleShowLine:!0,segmentShowStroke:!0,segmentStrokeColor:"#fff",segmentStrokeWidth:2,animationSteps:100,animationEasing:"easeOutBounce",animateRotate:!0,animateScale:!1,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<segments.length; i++){%><li><span style="background-color:<%=segments[i].fillColor%>"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"PolarArea",defaults:s,initialize:function(t){this.segments=[],this.SegmentArc=i.Arc.extend({showStroke:this.options.segmentShowStroke,strokeWidth:this.options.segmentStrokeWidth,strokeColor:this.options.segmentStrokeColor,ctx:this.chart.ctx,innerRadius:0,x:this.chart.width/2,y:this.chart.height/2}),this.scale=new i.RadialScale({display:this.options.showScale,fontStyle:this.options.scaleFontStyle,fontSize:this.options.scaleFontSize,fontFamily:this.options.scaleFontFamily,fontColor:this.options.scaleFontColor,showLabels:this.options.scaleShowLabels,showLabelBackdrop:this.options.scaleShowLabelBackdrop,backdropColor:this.options.scaleBackdropColor,backdropPaddingY:this.options.scaleBackdropPaddingY,backdropPaddingX:this.options.scaleBackdropPaddingX,lineWidth:this.options.scaleShowLine?this.options.scaleLineWidth:0,lineColor:this.options.scaleLineColor,lineArc:!0,width:this.chart.width,height:this.chart.height,xCenter:this.chart.width/2,yCenter:this.chart.height/2,ctx:this.chart.ctx,templateString:this.options.scaleLabel,valuesCount:t.length}),this.updateScaleRange(t),this.scale.update(),e.each(t,function(t,i){this.addData(t,i,!0)},this),this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getSegmentsAtEvent(t):[];e.each(this.segments,function(t){t.restore(["fillColor"])}),e.each(i,function(t){t.fillColor=t.highlightColor}),this.showTooltip(i)}),this.render()},getSegmentsAtEvent:function(t){var i=[],s=e.getRelativePosition(t);return e.each(this.segments,function(t){t.inRange(s.x,s.y)&&i.push(t)},this),i},addData:function(t,i,e){var s=i||this.segments.length;this.segments.splice(s,0,new this.SegmentArc({fillColor:t.color,highlightColor:t.highlight||t.color,label:t.label,value:t.value,outerRadius:this.options.animateScale?0:this.scale.calculateCenterOffset(t.value),circumference:this.options.animateRotate?0:this.scale.getCircumference(),startAngle:1.5*Math.PI})),e||(this.reflow(),this.update())},removeData:function(t){var i=e.isNumber(t)?t:this.segments.length-1;this.segments.splice(i,1),this.reflow(),this.update()},calculateTotal:function(t){this.total=0,e.each(t,function(t){this.total+=t.value},this),this.scale.valuesCount=this.segments.length},updateScaleRange:function(t){var i=[];e.each(t,function(t){i.push(t.value)});var s=this.options.scaleOverride?{steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}:e.calculateScaleRange(i,e.min([this.chart.width,this.chart.height])/2,this.options.scaleFontSize,this.options.scaleBeginAtZero,this.options.scaleIntegersOnly);e.extend(this.scale,s,{size:e.min([this.chart.width,this.chart.height]),xCenter:this.chart.width/2,yCenter:this.chart.height/2})},update:function(){this.calculateTotal(this.segments),e.each(this.segments,function(t){t.save()}),this.reflow(),this.render()},reflow:function(){e.extend(this.SegmentArc.prototype,{x:this.chart.width/2,y:this.chart.height/2}),this.updateScaleRange(this.segments),this.scale.update(),e.extend(this.scale,{xCenter:this.chart.width/2,yCenter:this.chart.height/2}),e.each(this.segments,function(t){t.update({outerRadius:this.scale.calculateCenterOffset(t.value)})},this)},draw:function(t){var i=t||1;this.clear(),e.each(this.segments,function(t,e){t.transition({circumference:this.scale.getCircumference(),outerRadius:this.scale.calculateCenterOffset(t.value)},i),t.endAngle=t.startAngle+t.circumference,0===e&&(t.startAngle=1.5*Math.PI),e<this.segments.length-1&&(this.segments[e+1].startAngle=t.endAngle),t.draw()},this),this.scale.draw()}})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers;i.Type.extend({name:"Radar",defaults:{scaleShowLine:!0,angleShowLineOut:!0,scaleShowLabels:!1,scaleBeginAtZero:!0,angleLineColor:"rgba(0,0,0,.1)",angleLineWidth:1,pointLabelFontFamily:"'Arial'",pointLabelFontStyle:"normal",pointLabelFontSize:10,pointLabelFontColor:"#666",pointDot:!0,pointDotRadius:3,pointDotStrokeWidth:1,pointHitDetectionRadius:20,datasetStroke:!0,datasetStrokeWidth:2,datasetFill:!0,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].strokeColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'},initialize:function(t){this.PointClass=i.Point.extend({strokeWidth:this.options.pointDotStrokeWidth,radius:this.options.pointDotRadius,display:this.options.pointDot,hitDetectionRadius:this.options.pointHitDetectionRadius,ctx:this.chart.ctx}),this.datasets=[],this.buildScale(t),this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getPointsAtEvent(t):[];this.eachPoints(function(t){t.restore(["fillColor","strokeColor"])}),e.each(i,function(t){t.fillColor=t.highlightFill,t.strokeColor=t.highlightStroke}),this.showTooltip(i)}),e.each(t.datasets,function(i){var s={label:i.label||null,fillColor:i.fillColor,strokeColor:i.strokeColor,pointColor:i.pointColor,pointStrokeColor:i.pointStrokeColor,points:[]};this.datasets.push(s),e.each(i.data,function(e,n){var o;this.scale.animation||(o=this.scale.getPointPosition(n,this.scale.calculateCenterOffset(e))),s.points.push(new this.PointClass({value:e,label:t.labels[n],datasetLabel:i.label,x:this.options.animation?this.scale.xCenter:o.x,y:this.options.animation?this.scale.yCenter:o.y,strokeColor:i.pointStrokeColor,fillColor:i.pointColor,highlightFill:i.pointHighlightFill||i.pointColor,highlightStroke:i.pointHighlightStroke||i.pointStrokeColor}))},this)},this),this.render()},eachPoints:function(t){e.each(this.datasets,function(i){e.each(i.points,t,this)},this)},getPointsAtEvent:function(t){var i=e.getRelativePosition(t),s=e.getAngleFromPoint({x:this.scale.xCenter,y:this.scale.yCenter},i),n=2*Math.PI/this.scale.valuesCount,o=Math.round((s.angle-1.5*Math.PI)/n),a=[];return(o>=this.scale.valuesCount||0>o)&&(o=0),s.distance<=this.scale.drawingArea&&e.each(this.datasets,function(t){a.push(t.points[o])}),a},buildScale:function(t){this.scale=new i.RadialScale({display:this.options.showScale,fontStyle:this.options.scaleFontStyle,fontSize:this.options.scaleFontSize,fontFamily:this.options.scaleFontFamily,fontColor:this.options.scaleFontColor,showLabels:this.options.scaleShowLabels,showLabelBackdrop:this.options.scaleShowLabelBackdrop,backdropColor:this.options.scaleBackdropColor,backdropPaddingY:this.options.scaleBackdropPaddingY,backdropPaddingX:this.options.scaleBackdropPaddingX,lineWidth:this.options.scaleShowLine?this.options.scaleLineWidth:0,lineColor:this.options.scaleLineColor,angleLineColor:this.options.angleLineColor,angleLineWidth:this.options.angleShowLineOut?this.options.angleLineWidth:0,pointLabelFontColor:this.options.pointLabelFontColor,pointLabelFontSize:this.options.pointLabelFontSize,pointLabelFontFamily:this.options.pointLabelFontFamily,pointLabelFontStyle:this.options.pointLabelFontStyle,height:this.chart.height,width:this.chart.width,xCenter:this.chart.width/2,yCenter:this.chart.height/2,ctx:this.chart.ctx,templateString:this.options.scaleLabel,labels:t.labels,valuesCount:t.datasets[0].data.length}),this.scale.setScaleSize(),this.updateScaleRange(t.datasets),this.scale.buildYLabels()},updateScaleRange:function(t){var i=function(){var i=[];return e.each(t,function(t){t.data?i=i.concat(t.data):e.each(t.points,function(t){i.push(t.value)})}),i}(),s=this.options.scaleOverride?{steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}:e.calculateScaleRange(i,e.min([this.chart.width,this.chart.height])/2,this.options.scaleFontSize,this.options.scaleBeginAtZero,this.options.scaleIntegersOnly);e.extend(this.scale,s)},addData:function(t,i){this.scale.valuesCount++,e.each(t,function(t,e){var s=this.scale.getPointPosition(this.scale.valuesCount,this.scale.calculateCenterOffset(t));this.datasets[e].points.push(new this.PointClass({value:t,label:i,x:s.x,y:s.y,strokeColor:this.datasets[e].pointStrokeColor,fillColor:this.datasets[e].pointColor}))},this),this.scale.labels.push(i),this.reflow(),this.update()},removeData:function(){this.scale.valuesCount--,this.scale.labels.shift(),e.each(this.datasets,function(t){t.points.shift()},this),this.reflow(),this.update()},update:function(){this.eachPoints(function(t){t.save()}),this.reflow(),this.render()},reflow:function(){e.extend(this.scale,{width:this.chart.width,height:this.chart.height,size:e.min([this.chart.width,this.chart.height]),xCenter:this.chart.width/2,yCenter:this.chart.height/2}),this.updateScaleRange(this.datasets),this.scale.setScaleSize(),this.scale.buildYLabels()},draw:function(t){var i=t||1,s=this.chart.ctx;this.clear(),this.scale.draw(),e.each(this.datasets,function(t){e.each(t.points,function(t,e){t.hasValue()&&t.transition(this.scale.getPointPosition(e,this.scale.calculateCenterOffset(t.value)),i)},this),s.lineWidth=this.options.datasetStrokeWidth,s.strokeStyle=t.strokeColor,s.beginPath(),e.each(t.points,function(t,i){0===i?s.moveTo(t.x,t.y):s.lineTo(t.x,t.y)},this),s.closePath(),s.stroke(),s.fillStyle=t.fillColor,s.fill(),e.each(t.points,function(t){t.hasValue()&&t.draw()})},this)}})}.call(this);
\ No newline at end of file
diff --git a/static/JSXTransformer-0.13.3.js b/static/JSXTransformer-0.13.3.js
new file mode 100644
index 00000000..34da3ad5
--- /dev/null
+++ b/static/JSXTransformer-0.13.3.js
@@ -0,0 +1,15919 @@
+/**
+ * JSXTransformer v0.13.3
+ */
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.JSXTransformer = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+/* jshint browser: true */
+/* jslint evil: true */
+/*eslint-disable no-eval */
+/*eslint-disable block-scoped-var */
+
+'use strict';
+
+var ReactTools = _dereq_('../main');
+var inlineSourceMap = _dereq_('./inline-source-map');
+
+var headEl;
+var dummyAnchor;
+var inlineScriptCount = 0;
+
+// The source-map library relies on Object.defineProperty, but IE8 doesn't
+// support it fully even with es5-sham. Indeed, es5-sham's defineProperty
+// throws when Object.prototype.__defineGetter__ is missing, so we skip building
+// the source map in that case.
+var supportsAccessors = Object.prototype.hasOwnProperty('__defineGetter__');
+
+/**
+ * Run provided code through jstransform.
+ *
+ * @param {string} source Original source code
+ * @param {object?} options Options to pass to jstransform
+ * @return {object} object as returned from jstransform
+ */
+function transformReact(source, options) {
+  options = options || {};
+
+  // Force the sourcemaps option manually. We don't want to use it if it will
+  // break (see above note about supportsAccessors). We'll only override the
+  // value here if sourceMap was specified and is truthy. This guarantees that
+  // we won't override any user intent (since this method is exposed publicly).
+  if (options.sourceMap) {
+    options.sourceMap = supportsAccessors;
+  }
+
+  // Otherwise just pass all options straight through to react-tools.
+  return ReactTools.transformWithDetails(source, options);
+}
+
+/**
+ * Eval provided source after transforming it.
+ *
+ * @param {string} source Original source code
+ * @param {object?} options Options to pass to jstransform
+ */
+function exec(source, options) {
+  return eval(transformReact(source, options).code);
+}
+
+/**
+ * This method returns a nicely formated line of code pointing to the exact
+ * location of the error `e`. The line is limited in size so big lines of code
+ * are also shown in a readable way.
+ *
+ * Example:
+ * ... x', overflow:'scroll'}} id={} onScroll={this.scroll} class=" ...
+ * ^
+ *
+ * @param {string} code The full string of code
+ * @param {Error} e The error being thrown
+ * @return {string} formatted message
+ * @internal
+ */
+function createSourceCodeErrorMessage(code, e) {
+  var sourceLines = code.split('\n');
+  // e.lineNumber is non-standard so we can't depend on its availability. If
+  // we're in a browser where it isn't supported, don't even bother trying to
+  // format anything. We may also hit a case where the line number is reported
+  // incorrectly and is outside the bounds of the actual code. Handle that too.
+  if (!e.lineNumber || e.lineNumber > sourceLines.length) {
+    return '';
+  }
+  var erroneousLine = sourceLines[e.lineNumber - 1];
+
+  // Removes any leading indenting spaces and gets the number of
+  // chars indenting the `erroneousLine`
+  var indentation = 0;
+  erroneousLine = erroneousLine.replace(/^\s+/, function(leadingSpaces) {
+    indentation = leadingSpaces.length;
+    return '';
+  });
+
+  // Defines the number of characters that are going to show
+  // before and after the erroneous code
+  var LIMIT = 30;
+  var errorColumn = e.column - indentation;
+
+  if (errorColumn > LIMIT) {
+    erroneousLine = '... ' + erroneousLine.slice(errorColumn - LIMIT);
+    errorColumn = 4 + LIMIT;
+  }
+  if (erroneousLine.length - errorColumn > LIMIT) {
+    erroneousLine = erroneousLine.slice(0, errorColumn + LIMIT) + ' ...';
+  }
+  var message = '\n\n' + erroneousLine + '\n';
+  message += new Array(errorColumn - 1).join(' ') + '^';
+  return message;
+}
+
+/**
+ * Actually transform the code.
+ *
+ * @param {string} code
+ * @param {string?} url
+ * @param {object?} options
+ * @return {string} The transformed code.
+ * @internal
+ */
+function transformCode(code, url, options) {
+  try {
+    var transformed = transformReact(code, options);
+  } catch(e) {
+    e.message += '\n    at ';
+    if (url) {
+      if ('fileName' in e) {
+        // We set `fileName` if it's supported by this error object and
+        // a `url` was provided.
+        // The error will correctly point to `url` in Firefox.
+        e.fileName = url;
+      }
+      e.message += url + ':' + e.lineNumber + ':' + e.columnNumber;
+    } else {
+      e.message += location.href;
+    }
+    e.message += createSourceCodeErrorMessage(code, e);
+    throw e;
+  }
+
+  if (!transformed.sourceMap) {
+    return transformed.code;
+  }
+
+  var source;
+  if (url == null) {
+    source = 'Inline JSX script';
+    inlineScriptCount++;
+    if (inlineScriptCount > 1) {
+      source += ' (' + inlineScriptCount + ')';
+    }
+  } else if (dummyAnchor) {
+    // Firefox has problems when the sourcemap source is a proper URL with a
+    // protocol and hostname, so use the pathname. We could use just the
+    // filename, but hopefully using the full path will prevent potential
+    // issues where the same filename exists in multiple directories.
+    dummyAnchor.href = url;
+    source = dummyAnchor.pathname.substr(1);
+  }
+
+  return (
+    transformed.code +
+    '\n' +
+    inlineSourceMap(transformed.sourceMap, code, source)
+  );
+}
+
+
+/**
+ * Appends a script element at the end of the <head> with the content of code,
+ * after transforming it.
+ *
+ * @param {string} code The original source code
+ * @param {string?} url Where the code came from. null if inline
+ * @param {object?} options Options to pass to jstransform
+ * @internal
+ */
+function run(code, url, options) {
+  var scriptEl = document.createElement('script');
+  scriptEl.text = transformCode(code, url, options);
+  headEl.appendChild(scriptEl);
+}
+
+/**
+ * Load script from the provided url and pass the content to the callback.
+ *
+ * @param {string} url The location of the script src
+ * @param {function} callback Function to call with the content of url
+ * @internal
+ */
+function load(url, successCallback, errorCallback) {
+  var xhr;
+  xhr = window.ActiveXObject ? new window.ActiveXObject('Microsoft.XMLHTTP')
+                             : new XMLHttpRequest();
+
+  // async, however scripts will be executed in the order they are in the
+  // DOM to mirror normal script loading.
+  xhr.open('GET', url, true);
+  if ('overrideMimeType' in xhr) {
+    xhr.overrideMimeType('text/plain');
+  }
+  xhr.onreadystatechange = function() {
+    if (xhr.readyState === 4) {
+      if (xhr.status === 0 || xhr.status === 200) {
+        successCallback(xhr.responseText);
+      } else {
+        errorCallback();
+        throw new Error('Could not load ' + url);
+      }
+    }
+  };
+  return xhr.send(null);
+}
+
+/**
+ * Loop over provided script tags and get the content, via innerHTML if an
+ * inline script, or by using XHR. Transforms are applied if needed. The scripts
+ * are executed in the order they are found on the page.
+ *
+ * @param {array} scripts The <script> elements to load and run.
+ * @internal
+ */
+function loadScripts(scripts) {
+  var result = [];
+  var count = scripts.length;
+
+  function check() {
+    var script, i;
+
+    for (i = 0; i < count; i++) {
+      script = result[i];
+
+      if (script.loaded && !script.executed) {
+        script.executed = true;
+        run(script.content, script.url, script.options);
+      } else if (!script.loaded && !script.error && !script.async) {
+        break;
+      }
+    }
+  }
+
+  scripts.forEach(function(script, i) {
+    var options = {
+      sourceMap: true
+    };
+    if (/;harmony=true(;|$)/.test(script.type)) {
+      options.harmony = true;
+    }
+    if (/;stripTypes=true(;|$)/.test(script.type)) {
+      options.stripTypes = true;
+    }
+
+    // script.async is always true for non-javascript script tags
+    var async = script.hasAttribute('async');
+
+    if (script.src) {
+      result[i] = {
+        async: async,
+        error: false,
+        executed: false,
+        content: null,
+        loaded: false,
+        url: script.src,
+        options: options
+      };
+
+      load(script.src, function(content) {
+        result[i].loaded = true;
+        result[i].content = content;
+        check();
+      }, function() {
+        result[i].error = true;
+        check();
+      });
+    } else {
+      result[i] = {
+        async: async,
+        error: false,
+        executed: false,
+        content: script.innerHTML,
+        loaded: true,
+        url: null,
+        options: options
+      };
+    }
+  });
+
+  check();
+}
+
+/**
+ * Find and run all script tags with type="text/jsx".
+ *
+ * @internal
+ */
+function runScripts() {
+  var scripts = document.getElementsByTagName('script');
+
+  // Array.prototype.slice cannot be used on NodeList on IE8
+  var jsxScripts = [];
+  for (var i = 0; i < scripts.length; i++) {
+    if (/^text\/jsx(;|$)/.test(scripts.item(i).type)) {
+      jsxScripts.push(scripts.item(i));
+    }
+  }
+
+  if (jsxScripts.length < 1) {
+    return;
+  }
+
+  console.warn(
+    'You are using the in-browser JSX transformer. Be sure to precompile ' +
+    'your JSX for production - ' +
+    'http://facebook.github.io/react/docs/tooling-integration.html#jsx'
+  );
+
+  loadScripts(jsxScripts);
+}
+
+// Listen for load event if we're in a browser and then kick off finding and
+// running of scripts.
+if (typeof window !== 'undefined' && window !== null) {
+  headEl = document.getElementsByTagName('head')[0];
+  dummyAnchor = document.createElement('a');
+
+  if (window.addEventListener) {
+    window.addEventListener('DOMContentLoaded', runScripts, false);
+  } else {
+    window.attachEvent('onload', runScripts);
+  }
+}
+
+module.exports = {
+  transform: transformReact,
+  exec: exec
+};
+
+},{"../main":2,"./inline-source-map":41}],2:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+'use strict';
+/*eslint-disable no-undef*/
+var visitors = _dereq_('./vendor/fbtransform/visitors');
+var transform = _dereq_('jstransform').transform;
+var typesSyntax = _dereq_('jstransform/visitors/type-syntax');
+var inlineSourceMap = _dereq_('./vendor/inline-source-map');
+
+module.exports = {
+  transform: function(input, options) {
+    options = processOptions(options);
+    var output = innerTransform(input, options);
+    var result = output.code;
+    if (options.sourceMap) {
+      var map = inlineSourceMap(
+        output.sourceMap,
+        input,
+        options.filename
+      );
+      result += '\n' + map;
+    }
+    return result;
+  },
+  transformWithDetails: function(input, options) {
+    options = processOptions(options);
+    var output = innerTransform(input, options);
+    var result = {};
+    result.code = output.code;
+    if (options.sourceMap) {
+      result.sourceMap = output.sourceMap.toJSON();
+    }
+    if (options.filename) {
+      result.sourceMap.sources = [options.filename];
+    }
+    return result;
+  }
+};
+
+/**
+ * Only copy the values that we need. We'll do some preprocessing to account for
+ * converting command line flags to options that jstransform can actually use.
+ */
+function processOptions(opts) {
+  opts = opts || {};
+  var options = {};
+
+  options.harmony = opts.harmony;
+  options.stripTypes = opts.stripTypes;
+  options.sourceMap = opts.sourceMap;
+  options.filename = opts.sourceFilename;
+
+  if (opts.es6module) {
+    options.sourceType = 'module';
+  }
+  if (opts.nonStrictEs6module) {
+    options.sourceType = 'nonStrictModule';
+  }
+
+  // Instead of doing any fancy validation, only look for 'es3'. If we have
+  // that, then use it. Otherwise use 'es5'.
+  options.es3 = opts.target === 'es3';
+  options.es5 = !options.es3;
+
+  return options;
+}
+
+function innerTransform(input, options) {
+  var visitorSets = ['react'];
+  if (options.harmony) {
+    visitorSets.push('harmony');
+  }
+
+  if (options.es3) {
+    visitorSets.push('es3');
+  }
+
+  if (options.stripTypes) {
+    // Stripping types needs to happen before the other transforms
+    // unfortunately, due to bad interactions. For example,
+    // es6-rest-param-visitors conflict with stripping rest param type
+    // annotation
+    input = transform(typesSyntax.visitorList, input, options).code;
+  }
+
+  var visitorList = visitors.getVisitorsBySet(visitorSets);
+  return transform(visitorList, input, options);
+}
+
+},{"./vendor/fbtransform/visitors":40,"./vendor/inline-source-map":41,"jstransform":22,"jstransform/visitors/type-syntax":36}],3:[function(_dereq_,module,exports){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+
+var base64 = _dereq_('base64-js')
+var ieee754 = _dereq_('ieee754')
+var isArray = _dereq_('is-array')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+Buffer.poolSize = 8192 // not used by this implementation
+
+var kMaxLength = 0x3fffffff
+var rootParent = {}
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Use Object implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * Note:
+ *
+ * - Implementation must support adding new properties to `Uint8Array` instances.
+ *   Firefox 4-29 lacked support, fixed in Firefox 30+.
+ *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+ *
+ *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+ *
+ *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+ *    incorrect length in some situations.
+ *
+ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
+ * get the Object implementation, which is slower but will work correctly.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = (function () {
+  try {
+    var buf = new ArrayBuffer(0)
+    var arr = new Uint8Array(buf)
+    arr.foo = function () { return 42 }
+    return arr.foo() === 42 && // typed array instances can be augmented
+        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+  } catch (e) {
+    return false
+  }
+})()
+
+/**
+ * Class: Buffer
+ * =============
+ *
+ * The Buffer constructor returns instances of `Uint8Array` that are augmented
+ * with function properties for all the node `Buffer` API functions. We use
+ * `Uint8Array` so that square bracket notation works as expected -- it returns
+ * a single octet.
+ *
+ * By augmenting the instances, we can avoid modifying the `Uint8Array`
+ * prototype.
+ */
+function Buffer (subject, encoding) {
+  var self = this
+  if (!(self instanceof Buffer)) return new Buffer(subject, encoding)
+
+  var type = typeof subject
+  var length
+
+  if (type === 'number') {
+    length = +subject
+  } else if (type === 'string') {
+    length = Buffer.byteLength(subject, encoding)
+  } else if (type === 'object' && subject !== null) {
+    // assume object is array-like
+    if (subject.type === 'Buffer' && isArray(subject.data)) subject = subject.data
+    length = +subject.length
+  } else {
+    throw new TypeError('must start with number, buffer, array or string')
+  }
+
+  if (length > kMaxLength) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum size: 0x' +
+      kMaxLength.toString(16) + ' bytes')
+  }
+
+  if (length < 0) length = 0
+  else length >>>= 0 // coerce to uint32
+
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Preferred: Return an augmented `Uint8Array` instance for best performance
+    self = Buffer._augment(new Uint8Array(length)) // eslint-disable-line consistent-this
+  } else {
+    // Fallback: Return THIS instance of Buffer (created by `new`)
+    self.length = length
+    self._isBuffer = true
+  }
+
+  var i
+  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
+    // Speed optimization -- use set if we're copying from a typed array
+    self._set(subject)
+  } else if (isArrayish(subject)) {
+    // Treat array-ish objects as a byte array
+    if (Buffer.isBuffer(subject)) {
+      for (i = 0; i < length; i++) {
+        self[i] = subject.readUInt8(i)
+      }
+    } else {
+      for (i = 0; i < length; i++) {
+        self[i] = ((subject[i] % 256) + 256) % 256
+      }
+    }
+  } else if (type === 'string') {
+    self.write(subject, 0, encoding)
+  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT) {
+    for (i = 0; i < length; i++) {
+      self[i] = 0
+    }
+  }
+
+  if (length > 0 && length <= Buffer.poolSize) self.parent = rootParent
+
+  return self
+}
+
+function SlowBuffer (subject, encoding) {
+  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
+
+  var buf = new Buffer(subject, encoding)
+  delete buf.parent
+  return buf
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return !!(b != null && b._isBuffer)
+}
+
+Buffer.compare = function compare (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError('Arguments must be Buffers')
+  }
+
+  if (a === b) return 0
+
+  var x = a.length
+  var y = b.length
+  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
+  if (i !== len) {
+    x = a[i]
+    y = b[i]
+  }
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'binary':
+    case 'base64':
+    case 'raw':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function concat (list, totalLength) {
+  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
+
+  if (list.length === 0) {
+    return new Buffer(0)
+  } else if (list.length === 1) {
+    return list[0]
+  }
+
+  var i
+  if (totalLength === undefined) {
+    totalLength = 0
+    for (i = 0; i < list.length; i++) {
+      totalLength += list[i].length
+    }
+  }
+
+  var buf = new Buffer(totalLength)
+  var pos = 0
+  for (i = 0; i < list.length; i++) {
+    var item = list[i]
+    item.copy(buf, pos)
+    pos += item.length
+  }
+  return buf
+}
+
+Buffer.byteLength = function byteLength (str, encoding) {
+  var ret
+  str = str + ''
+  switch (encoding || 'utf8') {
+    case 'ascii':
+    case 'binary':
+    case 'raw':
+      ret = str.length
+      break
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      ret = str.length * 2
+      break
+    case 'hex':
+      ret = str.length >>> 1
+      break
+    case 'utf8':
+    case 'utf-8':
+      ret = utf8ToBytes(str).length
+      break
+    case 'base64':
+      ret = base64ToBytes(str).length
+      break
+    default:
+      ret = str.length
+  }
+  return ret
+}
+
+// pre-set for values that may exist in the future
+Buffer.prototype.length = undefined
+Buffer.prototype.parent = undefined
+
+// toString(encoding, start=0, end=buffer.length)
+Buffer.prototype.toString = function toString (encoding, start, end) {
+  var loweredCase = false
+
+  start = start >>> 0
+  end = end === undefined || end === Infinity ? this.length : end >>> 0
+
+  if (!encoding) encoding = 'utf8'
+  if (start < 0) start = 0
+  if (end > this.length) end = this.length
+  if (end <= start) return ''
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'binary':
+        return binarySlice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max) str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function compare (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return 0
+  return Buffer.compare(this, b)
+}
+
+Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+  byteOffset >>= 0
+
+  if (this.length === 0) return -1
+  if (byteOffset >= this.length) return -1
+
+  // Negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
+
+  if (typeof val === 'string') {
+    if (val.length === 0) return -1 // special case: looking for empty string always fails
+    return String.prototype.indexOf.call(this, val, byteOffset)
+  }
+  if (Buffer.isBuffer(val)) {
+    return arrayIndexOf(this, val, byteOffset)
+  }
+  if (typeof val === 'number') {
+    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
+    }
+    return arrayIndexOf(this, [ val ], byteOffset)
+  }
+
+  function arrayIndexOf (arr, val, byteOffset) {
+    var foundIndex = -1
+    for (var i = 0; byteOffset + i < arr.length; i++) {
+      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
+      } else {
+        foundIndex = -1
+      }
+    }
+    return -1
+  }
+
+  throw new TypeError('val must be string, number or Buffer')
+}
+
+// `get` will be removed in Node 0.13+
+Buffer.prototype.get = function get (offset) {
+  console.log('.get() is deprecated. Access using array indexes instead.')
+  return this.readUInt8(offset)
+}
+
+// `set` will be removed in Node 0.13+
+Buffer.prototype.set = function set (v, offset) {
+  console.log('.set() is deprecated. Access using array indexes instead.')
+  return this.writeUInt8(v, offset)
+}
+
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
+
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; i++) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (isNaN(parsed)) throw new Error('Invalid hex string')
+    buf[offset + i] = parsed
+  }
+  return i
+}
+
+function utf8Write (buf, string, offset, length) {
+  var charsWritten = blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+  return charsWritten
+}
+
+function asciiWrite (buf, string, offset, length) {
+  var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
+  return charsWritten
+}
+
+function binaryWrite (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+  var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
+  return charsWritten
+}
+
+function utf16leWrite (buf, string, offset, length) {
+  var charsWritten = blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+  return charsWritten
+}
+
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Support both (string, offset, length, encoding)
+  // and the legacy (string, encoding, offset, length)
+  if (isFinite(offset)) {
+    if (!isFinite(length)) {
+      encoding = length
+      length = undefined
+    }
+  } else {  // legacy
+    var swap = encoding
+    encoding = offset
+    offset = length
+    length = swap
+  }
+
+  offset = Number(offset) || 0
+
+  if (length < 0 || offset < 0 || offset > this.length) {
+    throw new RangeError('attempt to write outside buffer bounds')
+  }
+
+  var remaining = this.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+  encoding = String(encoding || 'utf8').toLowerCase()
+
+  var ret
+  switch (encoding) {
+    case 'hex':
+      ret = hexWrite(this, string, offset, length)
+      break
+    case 'utf8':
+    case 'utf-8':
+      ret = utf8Write(this, string, offset, length)
+      break
+    case 'ascii':
+      ret = asciiWrite(this, string, offset, length)
+      break
+    case 'binary':
+      ret = binaryWrite(this, string, offset, length)
+      break
+    case 'base64':
+      ret = base64Write(this, string, offset, length)
+      break
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      ret = utf16leWrite(this, string, offset, length)
+      break
+    default:
+      throw new TypeError('Unknown encoding: ' + encoding)
+  }
+  return ret
+}
+
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
+
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
+
+function utf8Slice (buf, start, end) {
+  var res = ''
+  var tmp = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    if (buf[i] <= 0x7F) {
+      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
+      tmp = ''
+    } else {
+      tmp += '%' + buf[i].toString(16)
+    }
+  }
+
+  return res + decodeUtf8Char(tmp)
+}
+
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
+
+function binarySlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
+}
+
+function hexSlice (buf, start, end) {
+  var len = buf.length
+
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; i++) {
+    out += toHex(buf[i])
+  }
+  return out
+}
+
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+  }
+  return res
+}
+
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start) end = start
+
+  var newBuf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    newBuf = Buffer._augment(this.subarray(start, end))
+  } else {
+    var sliceLen = end - start
+    newBuf = new Buffer(sliceLen, undefined)
+    for (var i = 0; i < sliceLen; i++) {
+      newBuf[i] = this[i + start]
+    }
+  }
+
+  if (newBuf.length) newBuf.parent = this.parent || this
+
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
+
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
+
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
+
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
+
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
+
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
+
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
+
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
+
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
+}
+
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
+
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
+
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
+
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
+
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) >>> 0 & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) >>> 0 & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  this[offset] = value
+  return offset + 1
+}
+
+function objectWriteUInt16 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+      (littleEndian ? i : 1 - i) * 8
+  }
+}
+
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
+  }
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = value
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
+  return offset + 2
+}
+
+function objectWriteUInt32 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffffffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+  }
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset + 3] = (value >>> 24)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 1] = (value >>> 8)
+    this[offset] = value
+  } else {
+    objectWriteUInt32(this, value, offset, true)
+  }
+  return offset + 4
+}
+
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = value
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
+  return offset + 4
+}
+
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkInt(
+      this, value, offset, byteLength,
+      Math.pow(2, 8 * byteLength - 1) - 1,
+      -Math.pow(2, 8 * byteLength - 1)
+    )
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkInt(
+      this, value, offset, byteLength,
+      Math.pow(2, 8 * byteLength - 1) - 1,
+      -Math.pow(2, 8 * byteLength - 1)
+    )
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = value
+  return offset + 1
+}
+
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
+  }
+  return offset + 2
+}
+
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = value
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
+  return offset + 2
+}
+
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 3] = (value >>> 24)
+  } else {
+    objectWriteUInt32(this, value, offset, true)
+  }
+  return offset + 4
+}
+
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = value
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
+  return offset + 4
+}
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+  if (offset < 0) throw new RangeError('index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, target_start, start, end) {
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (target_start >= target.length) target_start = target.length
+  if (!target_start) target_start = 0
+  if (end > 0 && end < start) end = start
+
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
+
+  // Fatal error conditions
+  if (target_start < 0) {
+    throw new RangeError('targetStart out of bounds')
+  }
+  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - target_start < end - start) {
+    end = target.length - target_start + start
+  }
+
+  var len = end - start
+
+  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+    for (var i = 0; i < len; i++) {
+      target[i + target_start] = this[i + start]
+    }
+  } else {
+    target._set(this.subarray(start, start + len), target_start)
+  }
+
+  return len
+}
+
+// fill(value, start=0, end=buffer.length)
+Buffer.prototype.fill = function fill (value, start, end) {
+  if (!value) value = 0
+  if (!start) start = 0
+  if (!end) end = this.length
+
+  if (end < start) throw new RangeError('end < start')
+
+  // Fill 0 bytes; we're done
+  if (end === start) return
+  if (this.length === 0) return
+
+  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
+
+  var i
+  if (typeof value === 'number') {
+    for (i = start; i < end; i++) {
+      this[i] = value
+    }
+  } else {
+    var bytes = utf8ToBytes(value.toString())
+    var len = bytes.length
+    for (i = start; i < end; i++) {
+      this[i] = bytes[i % len]
+    }
+  }
+
+  return this
+}
+
+/**
+ * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
+ * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
+ */
+Buffer.prototype.toArrayBuffer = function toArrayBuffer () {
+  if (typeof Uint8Array !== 'undefined') {
+    if (Buffer.TYPED_ARRAY_SUPPORT) {
+      return (new Buffer(this)).buffer
+    } else {
+      var buf = new Uint8Array(this.length)
+      for (var i = 0, len = buf.length; i < len; i += 1) {
+        buf[i] = this[i]
+      }
+      return buf.buffer
+    }
+  } else {
+    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
+  }
+}
+
+// HELPER FUNCTIONS
+// ================
+
+var BP = Buffer.prototype
+
+/**
+ * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
+ */
+Buffer._augment = function _augment (arr) {
+  arr.constructor = Buffer
+  arr._isBuffer = true
+
+  // save reference to original Uint8Array set method before overwriting
+  arr._set = arr.set
+
+  // deprecated, will be removed in node 0.13+
+  arr.get = BP.get
+  arr.set = BP.set
+
+  arr.write = BP.write
+  arr.toString = BP.toString
+  arr.toLocaleString = BP.toString
+  arr.toJSON = BP.toJSON
+  arr.equals = BP.equals
+  arr.compare = BP.compare
+  arr.indexOf = BP.indexOf
+  arr.copy = BP.copy
+  arr.slice = BP.slice
+  arr.readUIntLE = BP.readUIntLE
+  arr.readUIntBE = BP.readUIntBE
+  arr.readUInt8 = BP.readUInt8
+  arr.readUInt16LE = BP.readUInt16LE
+  arr.readUInt16BE = BP.readUInt16BE
+  arr.readUInt32LE = BP.readUInt32LE
+  arr.readUInt32BE = BP.readUInt32BE
+  arr.readIntLE = BP.readIntLE
+  arr.readIntBE = BP.readIntBE
+  arr.readInt8 = BP.readInt8
+  arr.readInt16LE = BP.readInt16LE
+  arr.readInt16BE = BP.readInt16BE
+  arr.readInt32LE = BP.readInt32LE
+  arr.readInt32BE = BP.readInt32BE
+  arr.readFloatLE = BP.readFloatLE
+  arr.readFloatBE = BP.readFloatBE
+  arr.readDoubleLE = BP.readDoubleLE
+  arr.readDoubleBE = BP.readDoubleBE
+  arr.writeUInt8 = BP.writeUInt8
+  arr.writeUIntLE = BP.writeUIntLE
+  arr.writeUIntBE = BP.writeUIntBE
+  arr.writeUInt16LE = BP.writeUInt16LE
+  arr.writeUInt16BE = BP.writeUInt16BE
+  arr.writeUInt32LE = BP.writeUInt32LE
+  arr.writeUInt32BE = BP.writeUInt32BE
+  arr.writeIntLE = BP.writeIntLE
+  arr.writeIntBE = BP.writeIntBE
+  arr.writeInt8 = BP.writeInt8
+  arr.writeInt16LE = BP.writeInt16LE
+  arr.writeInt16BE = BP.writeInt16BE
+  arr.writeInt32LE = BP.writeInt32LE
+  arr.writeInt32BE = BP.writeInt32BE
+  arr.writeFloatLE = BP.writeFloatLE
+  arr.writeFloatBE = BP.writeFloatBE
+  arr.writeDoubleLE = BP.writeDoubleLE
+  arr.writeDoubleBE = BP.writeDoubleBE
+  arr.fill = BP.fill
+  arr.inspect = BP.inspect
+  arr.toArrayBuffer = BP.toArrayBuffer
+
+  return arr
+}
+
+var INVALID_BASE64_RE = /[^+\/0-9A-z\-]/g
+
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
+
+function stringtrim (str) {
+  if (str.trim) return str.trim()
+  return str.replace(/^\s+|\s+$/g, '')
+}
+
+function isArrayish (subject) {
+  return isArray(subject) || Buffer.isBuffer(subject) ||
+      subject && typeof subject === 'object' &&
+      typeof subject.length === 'number'
+}
+
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
+
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+  var i = 0
+
+  for (; i < length; i++) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (leadSurrogate) {
+        // 2 leads in a row
+        if (codePoint < 0xDC00) {
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          leadSurrogate = codePoint
+          continue
+        } else {
+          // valid surrogate pair
+          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
+          leadSurrogate = null
+        }
+      } else {
+        // no lead yet
+
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else {
+          // valid lead
+          leadSurrogate = codePoint
+          continue
+        }
+      }
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+      leadSurrogate = null
+    }
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x200000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
+
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
+  }
+
+  return byteArray
+}
+
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; i++) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
+
+function decodeUtf8Char (str) {
+  try {
+    return decodeURIComponent(str)
+  } catch (err) {
+    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
+  }
+}
+
+},{"base64-js":4,"ieee754":5,"is-array":6}],4:[function(_dereq_,module,exports){
+var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+
+;(function (exports) {
+	'use strict';
+
+  var Arr = (typeof Uint8Array !== 'undefined')
+    ? Uint8Array
+    : Array
+
+	var PLUS   = '+'.charCodeAt(0)
+	var SLASH  = '/'.charCodeAt(0)
+	var NUMBER = '0'.charCodeAt(0)
+	var LOWER  = 'a'.charCodeAt(0)
+	var UPPER  = 'A'.charCodeAt(0)
+	var PLUS_URL_SAFE = '-'.charCodeAt(0)
+	var SLASH_URL_SAFE = '_'.charCodeAt(0)
+
+	function decode (elt) {
+		var code = elt.charCodeAt(0)
+		if (code === PLUS ||
+		    code === PLUS_URL_SAFE)
+			return 62 // '+'
+		if (code === SLASH ||
+		    code === SLASH_URL_SAFE)
+			return 63 // '/'
+		if (code < NUMBER)
+			return -1 //no match
+		if (code < NUMBER + 10)
+			return code - NUMBER + 26 + 26
+		if (code < UPPER + 26)
+			return code - UPPER
+		if (code < LOWER + 26)
+			return code - LOWER + 26
+	}
+
+	function b64ToByteArray (b64) {
+		var i, j, l, tmp, placeHolders, arr
+
+		if (b64.length % 4 > 0) {
+			throw new Error('Invalid string. Length must be a multiple of 4')
+		}
+
+		// the number of equal signs (place holders)
+		// if there are two placeholders, than the two characters before it
+		// represent one byte
+		// if there is only one, then the three characters before it represent 2 bytes
+		// this is just a cheap hack to not do indexOf twice
+		var len = b64.length
+		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
+
+		// base64 is 4/3 + up to two characters of the original data
+		arr = new Arr(b64.length * 3 / 4 - placeHolders)
+
+		// if there are placeholders, only get up to the last complete 4 chars
+		l = placeHolders > 0 ? b64.length - 4 : b64.length
+
+		var L = 0
+
+		function push (v) {
+			arr[L++] = v
+		}
+
+		for (i = 0, j = 0; i < l; i += 4, j += 3) {
+			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
+			push((tmp & 0xFF0000) >> 16)
+			push((tmp & 0xFF00) >> 8)
+			push(tmp & 0xFF)
+		}
+
+		if (placeHolders === 2) {
+			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
+			push(tmp & 0xFF)
+		} else if (placeHolders === 1) {
+			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
+			push((tmp >> 8) & 0xFF)
+			push(tmp & 0xFF)
+		}
+
+		return arr
+	}
+
+	function uint8ToBase64 (uint8) {
+		var i,
+			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
+			output = "",
+			temp, length
+
+		function encode (num) {
+			return lookup.charAt(num)
+		}
+
+		function tripletToBase64 (num) {
+			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
+		}
+
+		// go through the array every three bytes, we'll deal with trailing stuff later
+		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
+			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+			output += tripletToBase64(temp)
+		}
+
+		// pad the end with zeros, but make sure to not forget the extra bytes
+		switch (extraBytes) {
+			case 1:
+				temp = uint8[uint8.length - 1]
+				output += encode(temp >> 2)
+				output += encode((temp << 4) & 0x3F)
+				output += '=='
+				break
+			case 2:
+				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
+				output += encode(temp >> 10)
+				output += encode((temp >> 4) & 0x3F)
+				output += encode((temp << 2) & 0x3F)
+				output += '='
+				break
+		}
+
+		return output
+	}
+
+	exports.toByteArray = b64ToByteArray
+	exports.fromByteArray = uint8ToBase64
+}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
+
+},{}],5:[function(_dereq_,module,exports){
+exports.read = function(buffer, offset, isLE, mLen, nBytes) {
+  var e, m,
+      eLen = nBytes * 8 - mLen - 1,
+      eMax = (1 << eLen) - 1,
+      eBias = eMax >> 1,
+      nBits = -7,
+      i = isLE ? (nBytes - 1) : 0,
+      d = isLE ? -1 : 1,
+      s = buffer[offset + i];
+
+  i += d;
+
+  e = s & ((1 << (-nBits)) - 1);
+  s >>= (-nBits);
+  nBits += eLen;
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);
+
+  m = e & ((1 << (-nBits)) - 1);
+  e >>= (-nBits);
+  nBits += mLen;
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);
+
+  if (e === 0) {
+    e = 1 - eBias;
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity);
+  } else {
+    m = m + Math.pow(2, mLen);
+    e = e - eBias;
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
+};
+
+exports.write = function(buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c,
+      eLen = nBytes * 8 - mLen - 1,
+      eMax = (1 << eLen) - 1,
+      eBias = eMax >> 1,
+      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
+      i = isLE ? 0 : (nBytes - 1),
+      d = isLE ? 1 : -1,
+      s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;
+
+  value = Math.abs(value);
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0;
+    e = eMax;
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2);
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--;
+      c *= 2;
+    }
+    if (e + eBias >= 1) {
+      value += rt / c;
+    } else {
+      value += rt * Math.pow(2, 1 - eBias);
+    }
+    if (value * c >= 2) {
+      e++;
+      c /= 2;
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0;
+      e = eMax;
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen);
+      e = e + eBias;
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
+      e = 0;
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);
+
+  e = (e << mLen) | m;
+  eLen += mLen;
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);
+
+  buffer[offset + i - d] |= s * 128;
+};
+
+},{}],6:[function(_dereq_,module,exports){
+
+/**
+ * isArray
+ */
+
+var isArray = Array.isArray;
+
+/**
+ * toString
+ */
+
+var str = Object.prototype.toString;
+
+/**
+ * Whether or not the given `val`
+ * is an array.
+ *
+ * example:
+ *
+ *        isArray([]);
+ *        // > true
+ *        isArray(arguments);
+ *        // > false
+ *        isArray('');
+ *        // > false
+ *
+ * @param {mixed} val
+ * @return {bool}
+ */
+
+module.exports = isArray || function (val) {
+  return !! val && '[object Array]' == str.call(val);
+};
+
+},{}],7:[function(_dereq_,module,exports){
+(function (process){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// resolves . and .. elements in a path array with directory names there
+// must be no slashes, empty elements, or device names (c:\) in the array
+// (so also no leading and trailing slashes - it does not distinguish
+// relative and absolute paths)
+function normalizeArray(parts, allowAboveRoot) {
+  // if the path tries to go above the root, `up` ends up > 0
+  var up = 0;
+  for (var i = parts.length - 1; i >= 0; i--) {
+    var last = parts[i];
+    if (last === '.') {
+      parts.splice(i, 1);
+    } else if (last === '..') {
+      parts.splice(i, 1);
+      up++;
+    } else if (up) {
+      parts.splice(i, 1);
+      up--;
+    }
+  }
+
+  // if the path is allowed to go above the root, restore leading ..s
+  if (allowAboveRoot) {
+    for (; up--; up) {
+      parts.unshift('..');
+    }
+  }
+
+  return parts;
+}
+
+// Split a filename into [root, dir, basename, ext], unix version
+// 'root' is just a slash, or nothing.
+var splitPathRe =
+    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+var splitPath = function(filename) {
+  return splitPathRe.exec(filename).slice(1);
+};
+
+// path.resolve([from ...], to)
+// posix version
+exports.resolve = function() {
+  var resolvedPath = '',
+      resolvedAbsolute = false;
+
+  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+    var path = (i >= 0) ? arguments[i] : process.cwd();
+
+    // Skip empty and invalid entries
+    if (typeof path !== 'string') {
+      throw new TypeError('Arguments to path.resolve must be strings');
+    } else if (!path) {
+      continue;
+    }
+
+    resolvedPath = path + '/' + resolvedPath;
+    resolvedAbsolute = path.charAt(0) === '/';
+  }
+
+  // At this point the path should be resolved to a full absolute path, but
+  // handle relative paths to be safe (might happen when process.cwd() fails)
+
+  // Normalize the path
+  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
+    return !!p;
+  }), !resolvedAbsolute).join('/');
+
+  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
+};
+
+// path.normalize(path)
+// posix version
+exports.normalize = function(path) {
+  var isAbsolute = exports.isAbsolute(path),
+      trailingSlash = substr(path, -1) === '/';
+
+  // Normalize the path
+  path = normalizeArray(filter(path.split('/'), function(p) {
+    return !!p;
+  }), !isAbsolute).join('/');
+
+  if (!path && !isAbsolute) {
+    path = '.';
+  }
+  if (path && trailingSlash) {
+    path += '/';
+  }
+
+  return (isAbsolute ? '/' : '') + path;
+};
+
+// posix version
+exports.isAbsolute = function(path) {
+  return path.charAt(0) === '/';
+};
+
+// posix version
+exports.join = function() {
+  var paths = Array.prototype.slice.call(arguments, 0);
+  return exports.normalize(filter(paths, function(p, index) {
+    if (typeof p !== 'string') {
+      throw new TypeError('Arguments to path.join must be strings');
+    }
+    return p;
+  }).join('/'));
+};
+
+
+// path.relative(from, to)
+// posix version
+exports.relative = function(from, to) {
+  from = exports.resolve(from).substr(1);
+  to = exports.resolve(to).substr(1);
+
+  function trim(arr) {
+    var start = 0;
+    for (; start < arr.length; start++) {
+      if (arr[start] !== '') break;
+    }
+
+    var end = arr.length - 1;
+    for (; end >= 0; end--) {
+      if (arr[end] !== '') break;
+    }
+
+    if (start > end) return [];
+    return arr.slice(start, end - start + 1);
+  }
+
+  var fromParts = trim(from.split('/'));
+  var toParts = trim(to.split('/'));
+
+  var length = Math.min(fromParts.length, toParts.length);
+  var samePartsLength = length;
+  for (var i = 0; i < length; i++) {
+    if (fromParts[i] !== toParts[i]) {
+      samePartsLength = i;
+      break;
+    }
+  }
+
+  var outputParts = [];
+  for (var i = samePartsLength; i < fromParts.length; i++) {
+    outputParts.push('..');
+  }
+
+  outputParts = outputParts.concat(toParts.slice(samePartsLength));
+
+  return outputParts.join('/');
+};
+
+exports.sep = '/';
+exports.delimiter = ':';
+
+exports.dirname = function(path) {
+  var result = splitPath(path),
+      root = result[0],
+      dir = result[1];
+
+  if (!root && !dir) {
+    // No dirname whatsoever
+    return '.';
+  }
+
+  if (dir) {
+    // It has a dirname, strip trailing slash
+    dir = dir.substr(0, dir.length - 1);
+  }
+
+  return root + dir;
+};
+
+
+exports.basename = function(path, ext) {
+  var f = splitPath(path)[2];
+  // TODO: make this comparison case-insensitive on windows?
+  if (ext && f.substr(-1 * ext.length) === ext) {
+    f = f.substr(0, f.length - ext.length);
+  }
+  return f;
+};
+
+
+exports.extname = function(path) {
+  return splitPath(path)[3];
+};
+
+function filter (xs, f) {
+    if (xs.filter) return xs.filter(f);
+    var res = [];
+    for (var i = 0; i < xs.length; i++) {
+        if (f(xs[i], i, xs)) res.push(xs[i]);
+    }
+    return res;
+}
+
+// String.prototype.substr - negative index don't work in IE8
+var substr = 'ab'.substr(-1) === 'b'
+    ? function (str, start, len) { return str.substr(start, len) }
+    : function (str, start, len) {
+        if (start < 0) start = str.length + start;
+        return str.substr(start, len);
+    }
+;
+
+}).call(this,_dereq_('_process'))
+},{"_process":8}],8:[function(_dereq_,module,exports){
+// shim for using process in browser
+
+var process = module.exports = {};
+var queue = [];
+var draining = false;
+
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    draining = true;
+    var currentQueue;
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        var i = -1;
+        while (++i < len) {
+            currentQueue[i]();
+        }
+        len = queue.length;
+    }
+    draining = false;
+}
+process.nextTick = function (fun) {
+    queue.push(fun);
+    if (!draining) {
+        setTimeout(drainQueue, 0);
+    }
+};
+
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+process.versions = {};
+
+function noop() {}
+
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
+
+// TODO(shtylman)
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
+
+},{}],9:[function(_dereq_,module,exports){
+/*
+  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
+  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
+  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
+  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
+  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
+  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
+  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
+  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+(function (root, factory) {
+    'use strict';
+
+    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
+    // Rhino, and plain browser loading.
+
+    /* istanbul ignore next */
+    if (typeof define === 'function' && define.amd) {
+        define(['exports'], factory);
+    } else if (typeof exports !== 'undefined') {
+        factory(exports);
+    } else {
+        factory((root.esprima = {}));
+    }
+}(this, function (exports) {
+    'use strict';
+
+    var Token,
+        TokenName,
+        FnExprTokens,
+        Syntax,
+        PropertyKind,
+        Messages,
+        Regex,
+        SyntaxTreeDelegate,
+        XHTMLEntities,
+        ClassPropertyType,
+        source,
+        strict,
+        index,
+        lineNumber,
+        lineStart,
+        length,
+        delegate,
+        lookahead,
+        state,
+        extra;
+
+    Token = {
+        BooleanLiteral: 1,
+        EOF: 2,
+        Identifier: 3,
+        Keyword: 4,
+        NullLiteral: 5,
+        NumericLiteral: 6,
+        Punctuator: 7,
+        StringLiteral: 8,
+        RegularExpression: 9,
+        Template: 10,
+        JSXIdentifier: 11,
+        JSXText: 12
+    };
+
+    TokenName = {};
+    TokenName[Token.BooleanLiteral] = 'Boolean';
+    TokenName[Token.EOF] = '<end>';
+    TokenName[Token.Identifier] = 'Identifier';
+    TokenName[Token.Keyword] = 'Keyword';
+    TokenName[Token.NullLiteral] = 'Null';
+    TokenName[Token.NumericLiteral] = 'Numeric';
+    TokenName[Token.Punctuator] = 'Punctuator';
+    TokenName[Token.StringLiteral] = 'String';
+    TokenName[Token.JSXIdentifier] = 'JSXIdentifier';
+    TokenName[Token.JSXText] = 'JSXText';
+    TokenName[Token.RegularExpression] = 'RegularExpression';
+
+    // A function following one of those tokens is an expression.
+    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
+                    'return', 'case', 'delete', 'throw', 'void',
+                    // assignment operators
+                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
+                    '&=', '|=', '^=', ',',
+                    // binary/unary operators
+                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
+                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
+                    '<=', '<', '>', '!=', '!=='];
+
+    Syntax = {
+        AnyTypeAnnotation: 'AnyTypeAnnotation',
+        ArrayExpression: 'ArrayExpression',
+        ArrayPattern: 'ArrayPattern',
+        ArrayTypeAnnotation: 'ArrayTypeAnnotation',
+        ArrowFunctionExpression: 'ArrowFunctionExpression',
+        AssignmentExpression: 'AssignmentExpression',
+        BinaryExpression: 'BinaryExpression',
+        BlockStatement: 'BlockStatement',
+        BooleanTypeAnnotation: 'BooleanTypeAnnotation',
+        BreakStatement: 'BreakStatement',
+        CallExpression: 'CallExpression',
+        CatchClause: 'CatchClause',
+        ClassBody: 'ClassBody',
+        ClassDeclaration: 'ClassDeclaration',
+        ClassExpression: 'ClassExpression',
+        ClassImplements: 'ClassImplements',
+        ClassProperty: 'ClassProperty',
+        ComprehensionBlock: 'ComprehensionBlock',
+        ComprehensionExpression: 'ComprehensionExpression',
+        ConditionalExpression: 'ConditionalExpression',
+        ContinueStatement: 'ContinueStatement',
+        DebuggerStatement: 'DebuggerStatement',
+        DeclareClass: 'DeclareClass',
+        DeclareFunction: 'DeclareFunction',
+        DeclareModule: 'DeclareModule',
+        DeclareVariable: 'DeclareVariable',
+        DoWhileStatement: 'DoWhileStatement',
+        EmptyStatement: 'EmptyStatement',
+        ExportDeclaration: 'ExportDeclaration',
+        ExportBatchSpecifier: 'ExportBatchSpecifier',
+        ExportSpecifier: 'ExportSpecifier',
+        ExpressionStatement: 'ExpressionStatement',
+        ForInStatement: 'ForInStatement',
+        ForOfStatement: 'ForOfStatement',
+        ForStatement: 'ForStatement',
+        FunctionDeclaration: 'FunctionDeclaration',
+        FunctionExpression: 'FunctionExpression',
+        FunctionTypeAnnotation: 'FunctionTypeAnnotation',
+        FunctionTypeParam: 'FunctionTypeParam',
+        GenericTypeAnnotation: 'GenericTypeAnnotation',
+        Identifier: 'Identifier',
+        IfStatement: 'IfStatement',
+        ImportDeclaration: 'ImportDeclaration',
+        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
+        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
+        ImportSpecifier: 'ImportSpecifier',
+        InterfaceDeclaration: 'InterfaceDeclaration',
+        InterfaceExtends: 'InterfaceExtends',
+        IntersectionTypeAnnotation: 'IntersectionTypeAnnotation',
+        LabeledStatement: 'LabeledStatement',
+        Literal: 'Literal',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        MethodDefinition: 'MethodDefinition',
+        ModuleSpecifier: 'ModuleSpecifier',
+        NewExpression: 'NewExpression',
+        NullableTypeAnnotation: 'NullableTypeAnnotation',
+        NumberTypeAnnotation: 'NumberTypeAnnotation',
+        ObjectExpression: 'ObjectExpression',
+        ObjectPattern: 'ObjectPattern',
+        ObjectTypeAnnotation: 'ObjectTypeAnnotation',
+        ObjectTypeCallProperty: 'ObjectTypeCallProperty',
+        ObjectTypeIndexer: 'ObjectTypeIndexer',
+        ObjectTypeProperty: 'ObjectTypeProperty',
+        Program: 'Program',
+        Property: 'Property',
+        QualifiedTypeIdentifier: 'QualifiedTypeIdentifier',
+        ReturnStatement: 'ReturnStatement',
+        SequenceExpression: 'SequenceExpression',
+        SpreadElement: 'SpreadElement',
+        SpreadProperty: 'SpreadProperty',
+        StringLiteralTypeAnnotation: 'StringLiteralTypeAnnotation',
+        StringTypeAnnotation: 'StringTypeAnnotation',
+        SwitchCase: 'SwitchCase',
+        SwitchStatement: 'SwitchStatement',
+        TaggedTemplateExpression: 'TaggedTemplateExpression',
+        TemplateElement: 'TemplateElement',
+        TemplateLiteral: 'TemplateLiteral',
+        ThisExpression: 'ThisExpression',
+        ThrowStatement: 'ThrowStatement',
+        TupleTypeAnnotation: 'TupleTypeAnnotation',
+        TryStatement: 'TryStatement',
+        TypeAlias: 'TypeAlias',
+        TypeAnnotation: 'TypeAnnotation',
+        TypeCastExpression: 'TypeCastExpression',
+        TypeofTypeAnnotation: 'TypeofTypeAnnotation',
+        TypeParameterDeclaration: 'TypeParameterDeclaration',
+        TypeParameterInstantiation: 'TypeParameterInstantiation',
+        UnaryExpression: 'UnaryExpression',
+        UnionTypeAnnotation: 'UnionTypeAnnotation',
+        UpdateExpression: 'UpdateExpression',
+        VariableDeclaration: 'VariableDeclaration',
+        VariableDeclarator: 'VariableDeclarator',
+        VoidTypeAnnotation: 'VoidTypeAnnotation',
+        WhileStatement: 'WhileStatement',
+        WithStatement: 'WithStatement',
+        JSXIdentifier: 'JSXIdentifier',
+        JSXNamespacedName: 'JSXNamespacedName',
+        JSXMemberExpression: 'JSXMemberExpression',
+        JSXEmptyExpression: 'JSXEmptyExpression',
+        JSXExpressionContainer: 'JSXExpressionContainer',
+        JSXElement: 'JSXElement',
+        JSXClosingElement: 'JSXClosingElement',
+        JSXOpeningElement: 'JSXOpeningElement',
+        JSXAttribute: 'JSXAttribute',
+        JSXSpreadAttribute: 'JSXSpreadAttribute',
+        JSXText: 'JSXText',
+        YieldExpression: 'YieldExpression',
+        AwaitExpression: 'AwaitExpression'
+    };
+
+    PropertyKind = {
+        Data: 1,
+        Get: 2,
+        Set: 4
+    };
+
+    ClassPropertyType = {
+        'static': 'static',
+        prototype: 'prototype'
+    };
+
+    // Error messages should be identical to V8.
+    Messages = {
+        UnexpectedToken: 'Unexpected token %0',
+        UnexpectedNumber: 'Unexpected number',
+        UnexpectedString: 'Unexpected string',
+        UnexpectedIdentifier: 'Unexpected identifier',
+        UnexpectedReserved: 'Unexpected reserved word',
+        UnexpectedTemplate: 'Unexpected quasi %0',
+        UnexpectedEOS: 'Unexpected end of input',
+        NewlineAfterThrow: 'Illegal newline after throw',
+        InvalidRegExp: 'Invalid regular expression',
+        UnterminatedRegExp: 'Invalid regular expression: missing /',
+        InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
+        InvalidLHSInFormalsList: 'Invalid left-hand side in formals list',
+        InvalidLHSInForIn: 'Invalid left-hand side in for-in',
+        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
+        NoCatchOrFinally: 'Missing catch or finally after try',
+        UnknownLabel: 'Undefined label \'%0\'',
+        Redeclaration: '%0 \'%1\' has already been declared',
+        IllegalContinue: 'Illegal continue statement',
+        IllegalBreak: 'Illegal break statement',
+        IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
+        IllegalClassConstructorProperty: 'Illegal constructor property in class definition',
+        IllegalReturn: 'Illegal return statement',
+        IllegalSpread: 'Illegal spread element',
+        StrictModeWith: 'Strict mode code may not include a with statement',
+        StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
+        StrictVarName: 'Variable name may not be eval or arguments in strict mode',
+        StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
+        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
+        ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
+        DefaultRestParameter: 'Rest parameter can not have a default value',
+        ElementAfterSpreadElement: 'Spread must be the final element of an element list',
+        PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
+        ObjectPatternAsRestParameter: 'Invalid rest parameter',
+        ObjectPatternAsSpread: 'Invalid spread argument',
+        StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
+        StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
+        StrictDelete: 'Delete of an unqualified identifier in strict mode.',
+        StrictDuplicateProperty: 'Duplicate data property in object literal not allowed in strict mode',
+        AccessorDataProperty: 'Object literal may not have data and accessor property with the same name',
+        AccessorGetSet: 'Object literal may not have multiple get/set accessors with the same name',
+        StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
+        StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictReservedWord: 'Use of future reserved word in strict mode',
+        MissingFromClause: 'Missing from clause',
+        NoAsAfterImportNamespace: 'Missing as after import *',
+        InvalidModuleSpecifier: 'Invalid module specifier',
+        IllegalImportDeclaration: 'Illegal import declaration',
+        IllegalExportDeclaration: 'Illegal export declaration',
+        NoUninitializedConst: 'Const must be initialized',
+        ComprehensionRequiresBlock: 'Comprehension must have at least one block',
+        ComprehensionError: 'Comprehension Error',
+        EachNotAllowed: 'Each is not supported',
+        InvalidJSXAttributeValue: 'JSX value should be either an expression or a quoted JSX text',
+        ExpectedJSXClosingTag: 'Expected corresponding JSX closing tag for %0',
+        AdjacentJSXElements: 'Adjacent JSX elements must be wrapped in an enclosing tag',
+        ConfusedAboutFunctionType: 'Unexpected token =>. It looks like ' +
+            'you are trying to write a function type, but you ended up ' +
+            'writing a grouped type followed by an =>, which is a syntax ' +
+            'error. Remember, function type parameters are named so function ' +
+            'types look like (name1: type1, name2: type2) => returnType. You ' +
+            'probably wrote (type1) => returnType'
+    };
+
+    // See also tools/generate-unicode-regex.py.
+    Regex = {
+        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
+        NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u05d0-\u05ea\u05f0-\u05f2\u0610-\u061a\u0620-\u0669\u066e-\u06d3\u06d5-\u06dc\u06df-\u06e8\u06ea-\u06fc\u06ff\u0710-\u074a\u074d-\u07b1\u07c0-\u07f5\u07fa\u0800-\u082d\u0840-\u085b\u08a0\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bc-\u09c4\u09c7\u09c8\u09cb-\u09ce\u09d7\u09dc\u09dd\u09df-\u09e3\u09e6-\u09f1\u0a01-\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a59-\u0a5c\u0a5e\u0a66-\u0a75\u0a81-\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abc-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ad0\u0ae0-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3c-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5c\u0b5d\u0b5f-\u0b63\u0b66-\u0b6f\u0b71\u0b82\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd0\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbc-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0cde\u0ce0-\u0ce3\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d44\u0d46-\u0d48\u0d4a-\u0d4e\u0d57\u0d60-\u0d63\u0d66-\u0d6f\u0d7a-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e01-\u0e3a\u0e40-\u0e4e\u0e50-\u0e59\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb9\u0ebb-\u0ebd\u0ec0-\u0ec4\u0ec6\u0ec8-\u0ecd\u0ed0-\u0ed9\u0edc-\u0edf\u0f00\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e-\u0f47\u0f49-\u0f6c\u0f71-\u0f84\u0f86-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1049\u1050-\u109d\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u135d-\u135f\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176c\u176e-\u1770\u1772\u1773\u1780-\u17d3\u17d7\u17dc\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1820-\u1877\u1880-\u18aa\u18b0-\u18f5\u1900-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\u1dfc-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200c\u200d\u203f\u2040\u2054\u2071\u207f\u2090-\u209c\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d7f-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2de0-\u2dff\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabea\uabec\uabed\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
+        LeadingZeros: new RegExp('^0+(?!$)')
+    };
+
+    // Ensure the condition is true, otherwise throw an error.
+    // This is only to have a better contract semantic, i.e. another safety net
+    // to catch a logic error. The condition shall be fulfilled in normal case.
+    // Do NOT use this to enforce a certain condition on any user input.
+
+    function assert(condition, message) {
+        /* istanbul ignore if */
+        if (!condition) {
+            throw new Error('ASSERT: ' + message);
+        }
+    }
+
+    function StringMap() {
+        this.$data = {};
+    }
+
+    StringMap.prototype.get = function (key) {
+        key = '$' + key;
+        return this.$data[key];
+    };
+
+    StringMap.prototype.set = function (key, value) {
+        key = '$' + key;
+        this.$data[key] = value;
+        return this;
+    };
+
+    StringMap.prototype.has = function (key) {
+        key = '$' + key;
+        return Object.prototype.hasOwnProperty.call(this.$data, key);
+    };
+
+    StringMap.prototype["delete"] = function (key) {
+        key = '$' + key;
+        return delete this.$data[key];
+    };
+
+    function isDecimalDigit(ch) {
+        return (ch >= 48 && ch <= 57);   // 0..9
+    }
+
+    function isHexDigit(ch) {
+        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
+    }
+
+    function isOctalDigit(ch) {
+        return '01234567'.indexOf(ch) >= 0;
+    }
+
+
+    // 7.2 White Space
+
+    function isWhiteSpace(ch) {
+        return (ch === 32) ||  // space
+            (ch === 9) ||      // tab
+            (ch === 0xB) ||
+            (ch === 0xC) ||
+            (ch === 0xA0) ||
+            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
+    }
+
+    // 7.3 Line Terminators
+
+    function isLineTerminator(ch) {
+        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
+    }
+
+    // 7.6 Identifier Names and Identifiers
+
+    function isIdentifierStart(ch) {
+        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
+            (ch >= 65 && ch <= 90) ||         // A..Z
+            (ch >= 97 && ch <= 122) ||        // a..z
+            (ch === 92) ||                    // \ (backslash)
+            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
+    }
+
+    function isIdentifierPart(ch) {
+        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
+            (ch >= 65 && ch <= 90) ||         // A..Z
+            (ch >= 97 && ch <= 122) ||        // a..z
+            (ch >= 48 && ch <= 57) ||         // 0..9
+            (ch === 92) ||                    // \ (backslash)
+            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
+    }
+
+    // 7.6.1.2 Future Reserved Words
+
+    function isFutureReservedWord(id) {
+        switch (id) {
+        case 'class':
+        case 'enum':
+        case 'export':
+        case 'extends':
+        case 'import':
+        case 'super':
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    function isStrictModeReservedWord(id) {
+        switch (id) {
+        case 'implements':
+        case 'interface':
+        case 'package':
+        case 'private':
+        case 'protected':
+        case 'public':
+        case 'static':
+        case 'yield':
+        case 'let':
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    function isRestrictedWord(id) {
+        return id === 'eval' || id === 'arguments';
+    }
+
+    // 7.6.1.1 Keywords
+
+    function isKeyword(id) {
+        if (strict && isStrictModeReservedWord(id)) {
+            return true;
+        }
+
+        // 'const' is specialized as Keyword in V8.
+        // 'yield' is only treated as a keyword in strict mode.
+        // 'let' is for compatiblity with SpiderMonkey and ES.next.
+        // Some others are from future reserved words.
+
+        switch (id.length) {
+        case 2:
+            return (id === 'if') || (id === 'in') || (id === 'do');
+        case 3:
+            return (id === 'var') || (id === 'for') || (id === 'new') ||
+                (id === 'try') || (id === 'let');
+        case 4:
+            return (id === 'this') || (id === 'else') || (id === 'case') ||
+                (id === 'void') || (id === 'with') || (id === 'enum');
+        case 5:
+            return (id === 'while') || (id === 'break') || (id === 'catch') ||
+                (id === 'throw') || (id === 'const') ||
+                (id === 'class') || (id === 'super');
+        case 6:
+            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
+                (id === 'switch') || (id === 'export') || (id === 'import');
+        case 7:
+            return (id === 'default') || (id === 'finally') || (id === 'extends');
+        case 8:
+            return (id === 'function') || (id === 'continue') || (id === 'debugger');
+        case 10:
+            return (id === 'instanceof');
+        default:
+            return false;
+        }
+    }
+
+    // 7.4 Comments
+
+    function addComment(type, value, start, end, loc) {
+        var comment;
+        assert(typeof start === 'number', 'Comment must have valid position');
+
+        // Because the way the actual token is scanned, often the comments
+        // (if any) are skipped twice during the lexical analysis.
+        // Thus, we need to skip adding a comment if the comment array already
+        // handled it.
+        if (state.lastCommentStart >= start) {
+            return;
+        }
+        state.lastCommentStart = start;
+
+        comment = {
+            type: type,
+            value: value
+        };
+        if (extra.range) {
+            comment.range = [start, end];
+        }
+        if (extra.loc) {
+            comment.loc = loc;
+        }
+        extra.comments.push(comment);
+        if (extra.attachComment) {
+            extra.leadingComments.push(comment);
+            extra.trailingComments.push(comment);
+        }
+    }
+
+    function skipSingleLineComment() {
+        var start, loc, ch, comment;
+
+        start = index - 2;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart - 2
+            }
+        };
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            ++index;
+            if (isLineTerminator(ch)) {
+                if (extra.comments) {
+                    comment = source.slice(start + 2, index - 1);
+                    loc.end = {
+                        line: lineNumber,
+                        column: index - lineStart - 1
+                    };
+                    addComment('Line', comment, start, index - 1, loc);
+                }
+                if (ch === 13 && source.charCodeAt(index) === 10) {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+                return;
+            }
+        }
+
+        if (extra.comments) {
+            comment = source.slice(start + 2, index);
+            loc.end = {
+                line: lineNumber,
+                column: index - lineStart
+            };
+            addComment('Line', comment, start, index, loc);
+        }
+    }
+
+    function skipMultiLineComment() {
+        var start, loc, ch, comment;
+
+        if (extra.comments) {
+            start = index - 2;
+            loc = {
+                start: {
+                    line: lineNumber,
+                    column: index - lineStart - 2
+                }
+            };
+        }
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (isLineTerminator(ch)) {
+                if (ch === 13 && source.charCodeAt(index + 1) === 10) {
+                    ++index;
+                }
+                ++lineNumber;
+                ++index;
+                lineStart = index;
+                if (index >= length) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            } else if (ch === 42) {
+                // Block comment ends with '*/' (char #42, char #47).
+                if (source.charCodeAt(index + 1) === 47) {
+                    ++index;
+                    ++index;
+                    if (extra.comments) {
+                        comment = source.slice(start + 2, index - 2);
+                        loc.end = {
+                            line: lineNumber,
+                            column: index - lineStart
+                        };
+                        addComment('Block', comment, start, index, loc);
+                    }
+                    return;
+                }
+                ++index;
+            } else {
+                ++index;
+            }
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    function skipComment() {
+        var ch;
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+
+            if (isWhiteSpace(ch)) {
+                ++index;
+            } else if (isLineTerminator(ch)) {
+                ++index;
+                if (ch === 13 && source.charCodeAt(index) === 10) {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+            } else if (ch === 47) { // 47 is '/'
+                ch = source.charCodeAt(index + 1);
+                if (ch === 47) {
+                    ++index;
+                    ++index;
+                    skipSingleLineComment();
+                } else if (ch === 42) {  // 42 is '*'
+                    ++index;
+                    ++index;
+                    skipMultiLineComment();
+                } else {
+                    break;
+                }
+            } else {
+                break;
+            }
+        }
+    }
+
+    function scanHexEscape(prefix) {
+        var i, len, ch, code = 0;
+
+        len = (prefix === 'u') ? 4 : 2;
+        for (i = 0; i < len; ++i) {
+            if (index < length && isHexDigit(source[index])) {
+                ch = source[index++];
+                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
+            } else {
+                return '';
+            }
+        }
+        return String.fromCharCode(code);
+    }
+
+    function scanUnicodeCodePointEscape() {
+        var ch, code, cu1, cu2;
+
+        ch = source[index];
+        code = 0;
+
+        // At least, one hex digit is required.
+        if (ch === '}') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        while (index < length) {
+            ch = source[index++];
+            if (!isHexDigit(ch)) {
+                break;
+            }
+            code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
+        }
+
+        if (code > 0x10FFFF || ch !== '}') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        // UTF-16 Encoding
+        if (code <= 0xFFFF) {
+            return String.fromCharCode(code);
+        }
+        cu1 = ((code - 0x10000) >> 10) + 0xD800;
+        cu2 = ((code - 0x10000) & 1023) + 0xDC00;
+        return String.fromCharCode(cu1, cu2);
+    }
+
+    function getEscapedIdentifier() {
+        var ch, id;
+
+        ch = source.charCodeAt(index++);
+        id = String.fromCharCode(ch);
+
+        // '\u' (char #92, char #117) denotes an escaped character.
+        if (ch === 92) {
+            if (source.charCodeAt(index) !== 117) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+            ++index;
+            ch = scanHexEscape('u');
+            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+            id = ch;
+        }
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (!isIdentifierPart(ch)) {
+                break;
+            }
+            ++index;
+            id += String.fromCharCode(ch);
+
+            // '\u' (char #92, char #117) denotes an escaped character.
+            if (ch === 92) {
+                id = id.substr(0, id.length - 1);
+                if (source.charCodeAt(index) !== 117) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+                ++index;
+                ch = scanHexEscape('u');
+                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+                id += ch;
+            }
+        }
+
+        return id;
+    }
+
+    function getIdentifier() {
+        var start, ch;
+
+        start = index++;
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (ch === 92) {
+                // Blackslash (char #92) marks Unicode escape sequence.
+                index = start;
+                return getEscapedIdentifier();
+            }
+            if (isIdentifierPart(ch)) {
+                ++index;
+            } else {
+                break;
+            }
+        }
+
+        return source.slice(start, index);
+    }
+
+    function scanIdentifier() {
+        var start, id, type;
+
+        start = index;
+
+        // Backslash (char #92) starts an escaped character.
+        id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();
+
+        // There is no keyword or literal with only one character.
+        // Thus, it must be an identifier.
+        if (id.length === 1) {
+            type = Token.Identifier;
+        } else if (isKeyword(id)) {
+            type = Token.Keyword;
+        } else if (id === 'null') {
+            type = Token.NullLiteral;
+        } else if (id === 'true' || id === 'false') {
+            type = Token.BooleanLiteral;
+        } else {
+            type = Token.Identifier;
+        }
+
+        return {
+            type: type,
+            value: id,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+
+    // 7.7 Punctuators
+
+    function scanPunctuator() {
+        var start = index,
+            code = source.charCodeAt(index),
+            code2,
+            ch1 = source[index],
+            ch2,
+            ch3,
+            ch4;
+
+        if (state.inJSXTag || state.inJSXChild) {
+            // Don't need to check for '{' and '}' as it's already handled
+            // correctly by default.
+            switch (code) {
+            case 60:  // <
+            case 62:  // >
+                ++index;
+                return {
+                    type: Token.Punctuator,
+                    value: String.fromCharCode(code),
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        switch (code) {
+        // Check for most common single-character punctuators.
+        case 40:   // ( open bracket
+        case 41:   // ) close bracket
+        case 59:   // ; semicolon
+        case 44:   // , comma
+        case 123:  // { open curly brace
+        case 125:  // } close curly brace
+        case 91:   // [
+        case 93:   // ]
+        case 58:   // :
+        case 63:   // ?
+        case 126:  // ~
+            ++index;
+            if (extra.tokenize) {
+                if (code === 40) {
+                    extra.openParenToken = extra.tokens.length;
+                } else if (code === 123) {
+                    extra.openCurlyToken = extra.tokens.length;
+                }
+            }
+            return {
+                type: Token.Punctuator,
+                value: String.fromCharCode(code),
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+
+        default:
+            code2 = source.charCodeAt(index + 1);
+
+            // '=' (char #61) marks an assignment or comparison operator.
+            if (code2 === 61) {
+                switch (code) {
+                case 37:  // %
+                case 38:  // &
+                case 42:  // *:
+                case 43:  // +
+                case 45:  // -
+                case 47:  // /
+                case 60:  // <
+                case 62:  // >
+                case 94:  // ^
+                case 124: // |
+                    index += 2;
+                    return {
+                        type: Token.Punctuator,
+                        value: String.fromCharCode(code) + String.fromCharCode(code2),
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        range: [start, index]
+                    };
+
+                case 33: // !
+                case 61: // =
+                    index += 2;
+
+                    // !== and ===
+                    if (source.charCodeAt(index) === 61) {
+                        ++index;
+                    }
+                    return {
+                        type: Token.Punctuator,
+                        value: source.slice(start, index),
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        range: [start, index]
+                    };
+                default:
+                    break;
+                }
+            }
+            break;
+        }
+
+        // Peek more characters.
+
+        ch2 = source[index + 1];
+        ch3 = source[index + 2];
+        ch4 = source[index + 3];
+
+        // 4-character punctuator: >>>=
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
+            if (ch4 === '=') {
+                index += 4;
+                return {
+                    type: Token.Punctuator,
+                    value: '>>>=',
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        // 3-character punctuators: === !== >>> <<= >>=
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '>' && !state.inType) {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '>>>',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '<<=',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '>>=',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '...',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // Other 2-character punctuators: ++ -- << >> && ||
+
+        // Don't match these tokens if we're in a type, since they never can
+        // occur and can mess up types like Map<string, Array<string>>
+        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0) && !state.inType) {
+            index += 2;
+            return {
+                type: Token.Punctuator,
+                value: ch1 + ch2,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '=' && ch2 === '>') {
+            index += 2;
+            return {
+                type: Token.Punctuator,
+                value: '=>',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '.') {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    // 7.8.3 Numeric Literals
+
+    function scanHexLiteral(start) {
+        var number = '';
+
+        while (index < length) {
+            if (!isHexDigit(source[index])) {
+                break;
+            }
+            number += source[index++];
+        }
+
+        if (number.length === 0) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseInt('0x' + number, 16),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanBinaryLiteral(start) {
+        var ch, number;
+
+        number = '';
+
+        while (index < length) {
+            ch = source[index];
+            if (ch !== '0' && ch !== '1') {
+                break;
+            }
+            number += source[index++];
+        }
+
+        if (number.length === 0) {
+            // only 0b or 0B
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        if (index < length) {
+            ch = source.charCodeAt(index);
+            /* istanbul ignore else */
+            if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseInt(number, 2),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanOctalLiteral(prefix, start) {
+        var number, octal;
+
+        if (isOctalDigit(prefix)) {
+            octal = true;
+            number = '0' + source[index++];
+        } else {
+            octal = false;
+            ++index;
+            number = '';
+        }
+
+        while (index < length) {
+            if (!isOctalDigit(source[index])) {
+                break;
+            }
+            number += source[index++];
+        }
+
+        if (!octal && number.length === 0) {
+            // only 0o or 0O
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseInt(number, 8),
+            octal: octal,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanNumericLiteral() {
+        var number, start, ch;
+
+        ch = source[index];
+        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
+            'Numeric literal must start with a decimal digit or a decimal point');
+
+        start = index;
+        number = '';
+        if (ch !== '.') {
+            number = source[index++];
+            ch = source[index];
+
+            // Hex number starts with '0x'.
+            // Octal number starts with '0'.
+            // Octal number in ES6 starts with '0o'.
+            // Binary number in ES6 starts with '0b'.
+            if (number === '0') {
+                if (ch === 'x' || ch === 'X') {
+                    ++index;
+                    return scanHexLiteral(start);
+                }
+                if (ch === 'b' || ch === 'B') {
+                    ++index;
+                    return scanBinaryLiteral(start);
+                }
+                if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
+                    return scanOctalLiteral(ch, start);
+                }
+                // decimal number starts with '0' such as '09' is illegal.
+                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            }
+
+            while (isDecimalDigit(source.charCodeAt(index))) {
+                number += source[index++];
+            }
+            ch = source[index];
+        }
+
+        if (ch === '.') {
+            number += source[index++];
+            while (isDecimalDigit(source.charCodeAt(index))) {
+                number += source[index++];
+            }
+            ch = source[index];
+        }
+
+        if (ch === 'e' || ch === 'E') {
+            number += source[index++];
+
+            ch = source[index];
+            if (ch === '+' || ch === '-') {
+                number += source[index++];
+            }
+            if (isDecimalDigit(source.charCodeAt(index))) {
+                while (isDecimalDigit(source.charCodeAt(index))) {
+                    number += source[index++];
+                }
+            } else {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseFloat(number),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    // 7.8.4 String Literals
+
+    function scanStringLiteral() {
+        var str = '', quote, start, ch, code, unescaped, restore, octal = false;
+
+        quote = source[index];
+        assert((quote === '\'' || quote === '"'),
+            'String literal must starts with a quote');
+
+        start = index;
+        ++index;
+
+        while (index < length) {
+            ch = source[index++];
+
+            if (ch === quote) {
+                quote = '';
+                break;
+            } else if (ch === '\\') {
+                ch = source[index++];
+                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
+                    switch (ch) {
+                    case 'n':
+                        str += '\n';
+                        break;
+                    case 'r':
+                        str += '\r';
+                        break;
+                    case 't':
+                        str += '\t';
+                        break;
+                    case 'u':
+                    case 'x':
+                        if (source[index] === '{') {
+                            ++index;
+                            str += scanUnicodeCodePointEscape();
+                        } else {
+                            restore = index;
+                            unescaped = scanHexEscape(ch);
+                            if (unescaped) {
+                                str += unescaped;
+                            } else {
+                                index = restore;
+                                str += ch;
+                            }
+                        }
+                        break;
+                    case 'b':
+                        str += '\b';
+                        break;
+                    case 'f':
+                        str += '\f';
+                        break;
+                    case 'v':
+                        str += '\x0B';
+                        break;
+
+                    default:
+                        if (isOctalDigit(ch)) {
+                            code = '01234567'.indexOf(ch);
+
+                            // \0 is not octal escape sequence
+                            if (code !== 0) {
+                                octal = true;
+                            }
+
+                            /* istanbul ignore else */
+                            if (index < length && isOctalDigit(source[index])) {
+                                octal = true;
+                                code = code * 8 + '01234567'.indexOf(source[index++]);
+
+                                // 3 digits are only allowed when string starts
+                                // with 0, 1, 2, 3
+                                if ('0123'.indexOf(ch) >= 0 &&
+                                        index < length &&
+                                        isOctalDigit(source[index])) {
+                                    code = code * 8 + '01234567'.indexOf(source[index++]);
+                                }
+                            }
+                            str += String.fromCharCode(code);
+                        } else {
+                            str += ch;
+                        }
+                        break;
+                    }
+                } else {
+                    ++lineNumber;
+                    if (ch === '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    lineStart = index;
+                }
+            } else if (isLineTerminator(ch.charCodeAt(0))) {
+                break;
+            } else {
+                str += ch;
+            }
+        }
+
+        if (quote !== '') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.StringLiteral,
+            value: str,
+            octal: octal,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanTemplate() {
+        var cooked = '', ch, start, terminated, tail, restore, unescaped, code, octal;
+
+        terminated = false;
+        tail = false;
+        start = index;
+
+        ++index;
+
+        while (index < length) {
+            ch = source[index++];
+            if (ch === '`') {
+                tail = true;
+                terminated = true;
+                break;
+            } else if (ch === '$') {
+                if (source[index] === '{') {
+                    ++index;
+                    terminated = true;
+                    break;
+                }
+                cooked += ch;
+            } else if (ch === '\\') {
+                ch = source[index++];
+                if (!isLineTerminator(ch.charCodeAt(0))) {
+                    switch (ch) {
+                    case 'n':
+                        cooked += '\n';
+                        break;
+                    case 'r':
+                        cooked += '\r';
+                        break;
+                    case 't':
+                        cooked += '\t';
+                        break;
+                    case 'u':
+                    case 'x':
+                        if (source[index] === '{') {
+                            ++index;
+                            cooked += scanUnicodeCodePointEscape();
+                        } else {
+                            restore = index;
+                            unescaped = scanHexEscape(ch);
+                            if (unescaped) {
+                                cooked += unescaped;
+                            } else {
+                                index = restore;
+                                cooked += ch;
+                            }
+                        }
+                        break;
+                    case 'b':
+                        cooked += '\b';
+                        break;
+                    case 'f':
+                        cooked += '\f';
+                        break;
+                    case 'v':
+                        cooked += '\v';
+                        break;
+
+                    default:
+                        if (isOctalDigit(ch)) {
+                            code = '01234567'.indexOf(ch);
+
+                            // \0 is not octal escape sequence
+                            if (code !== 0) {
+                                octal = true;
+                            }
+
+                            /* istanbul ignore else */
+                            if (index < length && isOctalDigit(source[index])) {
+                                octal = true;
+                                code = code * 8 + '01234567'.indexOf(source[index++]);
+
+                                // 3 digits are only allowed when string starts
+                                // with 0, 1, 2, 3
+                                if ('0123'.indexOf(ch) >= 0 &&
+                                        index < length &&
+                                        isOctalDigit(source[index])) {
+                                    code = code * 8 + '01234567'.indexOf(source[index++]);
+                                }
+                            }
+                            cooked += String.fromCharCode(code);
+                        } else {
+                            cooked += ch;
+                        }
+                        break;
+                    }
+                } else {
+                    ++lineNumber;
+                    if (ch === '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    lineStart = index;
+                }
+            } else if (isLineTerminator(ch.charCodeAt(0))) {
+                ++lineNumber;
+                if (ch === '\r' && source[index] === '\n') {
+                    ++index;
+                }
+                lineStart = index;
+                cooked += '\n';
+            } else {
+                cooked += ch;
+            }
+        }
+
+        if (!terminated) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.Template,
+            value: {
+                cooked: cooked,
+                raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
+            },
+            tail: tail,
+            octal: octal,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanTemplateElement(option) {
+        var startsWith, template;
+
+        lookahead = null;
+        skipComment();
+
+        startsWith = (option.head) ? '`' : '}';
+
+        if (source[index] !== startsWith) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        template = scanTemplate();
+
+        peek();
+
+        return template;
+    }
+
+    function testRegExp(pattern, flags) {
+        var tmp = pattern,
+            value;
+
+        if (flags.indexOf('u') >= 0) {
+            // Replace each astral symbol and every Unicode code point
+            // escape sequence with a single ASCII symbol to avoid throwing on
+            // regular expressions that are only valid in combination with the
+            // `/u` flag.
+            // Note: replacing with the ASCII symbol `x` might cause false
+            // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
+            // perfectly valid pattern that is equivalent to `[a-b]`, but it
+            // would be replaced by `[x-b]` which throws an error.
+            tmp = tmp
+                .replace(/\\u\{([0-9a-fA-F]+)\}/g, function ($0, $1) {
+                    if (parseInt($1, 16) <= 0x10FFFF) {
+                        return 'x';
+                    }
+                    throwError({}, Messages.InvalidRegExp);
+                })
+                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x');
+        }
+
+        // First, detect invalid regular expressions.
+        try {
+            value = new RegExp(tmp);
+        } catch (e) {
+            throwError({}, Messages.InvalidRegExp);
+        }
+
+        // Return a regular expression object for this pattern-flag pair, or
+        // `null` in case the current environment doesn't support the flags it
+        // uses.
+        try {
+            return new RegExp(pattern, flags);
+        } catch (exception) {
+            return null;
+        }
+    }
+
+    function scanRegExpBody() {
+        var ch, str, classMarker, terminated, body;
+
+        ch = source[index];
+        assert(ch === '/', 'Regular expression literal must start with a slash');
+        str = source[index++];
+
+        classMarker = false;
+        terminated = false;
+        while (index < length) {
+            ch = source[index++];
+            str += ch;
+            if (ch === '\\') {
+                ch = source[index++];
+                // ECMA-262 7.8.5
+                if (isLineTerminator(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnterminatedRegExp);
+                }
+                str += ch;
+            } else if (isLineTerminator(ch.charCodeAt(0))) {
+                throwError({}, Messages.UnterminatedRegExp);
+            } else if (classMarker) {
+                if (ch === ']') {
+                    classMarker = false;
+                }
+            } else {
+                if (ch === '/') {
+                    terminated = true;
+                    break;
+                } else if (ch === '[') {
+                    classMarker = true;
+                }
+            }
+        }
+
+        if (!terminated) {
+            throwError({}, Messages.UnterminatedRegExp);
+        }
+
+        // Exclude leading and trailing slash.
+        body = str.substr(1, str.length - 2);
+        return {
+            value: body,
+            literal: str
+        };
+    }
+
+    function scanRegExpFlags() {
+        var ch, str, flags, restore;
+
+        str = '';
+        flags = '';
+        while (index < length) {
+            ch = source[index];
+            if (!isIdentifierPart(ch.charCodeAt(0))) {
+                break;
+            }
+
+            ++index;
+            if (ch === '\\' && index < length) {
+                ch = source[index];
+                if (ch === 'u') {
+                    ++index;
+                    restore = index;
+                    ch = scanHexEscape('u');
+                    if (ch) {
+                        flags += ch;
+                        for (str += '\\u'; restore < index; ++restore) {
+                            str += source[restore];
+                        }
+                    } else {
+                        index = restore;
+                        flags += 'u';
+                        str += '\\u';
+                    }
+                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
+                } else {
+                    str += '\\';
+                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            } else {
+                flags += ch;
+                str += ch;
+            }
+        }
+
+        return {
+            value: flags,
+            literal: str
+        };
+    }
+
+    function scanRegExp() {
+        var start, body, flags, value;
+
+        lookahead = null;
+        skipComment();
+        start = index;
+
+        body = scanRegExpBody();
+        flags = scanRegExpFlags();
+        value = testRegExp(body.value, flags.value);
+
+        if (extra.tokenize) {
+            return {
+                type: Token.RegularExpression,
+                value: value,
+                regex: {
+                    pattern: body.value,
+                    flags: flags.value
+                },
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        return {
+            literal: body.literal + flags.literal,
+            value: value,
+            regex: {
+                pattern: body.value,
+                flags: flags.value
+            },
+            range: [start, index]
+        };
+    }
+
+    function isIdentifierName(token) {
+        return token.type === Token.Identifier ||
+            token.type === Token.Keyword ||
+            token.type === Token.BooleanLiteral ||
+            token.type === Token.NullLiteral;
+    }
+
+    function advanceSlash() {
+        var prevToken,
+            checkToken;
+        // Using the following algorithm:
+        // https://github.com/mozilla/sweet.js/wiki/design
+        prevToken = extra.tokens[extra.tokens.length - 1];
+        if (!prevToken) {
+            // Nothing before that: it cannot be a division.
+            return scanRegExp();
+        }
+        if (prevToken.type === 'Punctuator') {
+            if (prevToken.value === ')') {
+                checkToken = extra.tokens[extra.openParenToken - 1];
+                if (checkToken &&
+                        checkToken.type === 'Keyword' &&
+                        (checkToken.value === 'if' ||
+                         checkToken.value === 'while' ||
+                         checkToken.value === 'for' ||
+                         checkToken.value === 'with')) {
+                    return scanRegExp();
+                }
+                return scanPunctuator();
+            }
+            if (prevToken.value === '}') {
+                // Dividing a function by anything makes little sense,
+                // but we have to check for that.
+                if (extra.tokens[extra.openCurlyToken - 3] &&
+                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
+                    // Anonymous function.
+                    checkToken = extra.tokens[extra.openCurlyToken - 4];
+                    if (!checkToken) {
+                        return scanPunctuator();
+                    }
+                } else if (extra.tokens[extra.openCurlyToken - 4] &&
+                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
+                    // Named function.
+                    checkToken = extra.tokens[extra.openCurlyToken - 5];
+                    if (!checkToken) {
+                        return scanRegExp();
+                    }
+                } else {
+                    return scanPunctuator();
+                }
+                // checkToken determines whether the function is
+                // a declaration or an expression.
+                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
+                    // It is an expression.
+                    return scanPunctuator();
+                }
+                // It is a declaration.
+                return scanRegExp();
+            }
+            return scanRegExp();
+        }
+        if (prevToken.type === 'Keyword' && prevToken.value !== 'this') {
+            return scanRegExp();
+        }
+        return scanPunctuator();
+    }
+
+    function advance() {
+        var ch;
+
+        if (!state.inJSXChild) {
+            skipComment();
+        }
+
+        if (index >= length) {
+            return {
+                type: Token.EOF,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [index, index]
+            };
+        }
+
+        if (state.inJSXChild) {
+            return advanceJSXChild();
+        }
+
+        ch = source.charCodeAt(index);
+
+        // Very common: ( and ) and ;
+        if (ch === 40 || ch === 41 || ch === 58) {
+            return scanPunctuator();
+        }
+
+        // String literal starts with single quote (#39) or double quote (#34).
+        if (ch === 39 || ch === 34) {
+            if (state.inJSXTag) {
+                return scanJSXStringLiteral();
+            }
+            return scanStringLiteral();
+        }
+
+        if (state.inJSXTag && isJSXIdentifierStart(ch)) {
+            return scanJSXIdentifier();
+        }
+
+        if (ch === 96) {
+            return scanTemplate();
+        }
+        if (isIdentifierStart(ch)) {
+            return scanIdentifier();
+        }
+
+        // Dot (.) char #46 can also start a floating-point number, hence the need
+        // to check the next character.
+        if (ch === 46) {
+            if (isDecimalDigit(source.charCodeAt(index + 1))) {
+                return scanNumericLiteral();
+            }
+            return scanPunctuator();
+        }
+
+        if (isDecimalDigit(ch)) {
+            return scanNumericLiteral();
+        }
+
+        // Slash (/) char #47 can also start a regex.
+        if (extra.tokenize && ch === 47) {
+            return advanceSlash();
+        }
+
+        return scanPunctuator();
+    }
+
+    function lex() {
+        var token;
+
+        token = lookahead;
+        index = token.range[1];
+        lineNumber = token.lineNumber;
+        lineStart = token.lineStart;
+
+        lookahead = advance();
+
+        index = token.range[1];
+        lineNumber = token.lineNumber;
+        lineStart = token.lineStart;
+
+        return token;
+    }
+
+    function peek() {
+        var pos, line, start;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        lookahead = advance();
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+    }
+
+    function lookahead2() {
+        var adv, pos, line, start, result;
+
+        // If we are collecting the tokens, don't grab the next one yet.
+        /* istanbul ignore next */
+        adv = (typeof extra.advance === 'function') ? extra.advance : advance;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+
+        // Scan for the next immediate token.
+        /* istanbul ignore if */
+        if (lookahead === null) {
+            lookahead = adv();
+        }
+        index = lookahead.range[1];
+        lineNumber = lookahead.lineNumber;
+        lineStart = lookahead.lineStart;
+
+        // Grab the token right after.
+        result = adv();
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return result;
+    }
+
+    function rewind(token) {
+        index = token.range[0];
+        lineNumber = token.lineNumber;
+        lineStart = token.lineStart;
+        lookahead = token;
+    }
+
+    function markerCreate() {
+        if (!extra.loc && !extra.range) {
+            return undefined;
+        }
+        skipComment();
+        return {offset: index, line: lineNumber, col: index - lineStart};
+    }
+
+    function markerCreatePreserveWhitespace() {
+        if (!extra.loc && !extra.range) {
+            return undefined;
+        }
+        return {offset: index, line: lineNumber, col: index - lineStart};
+    }
+
+    function processComment(node) {
+        var lastChild,
+            trailingComments,
+            bottomRight = extra.bottomRightStack,
+            last = bottomRight[bottomRight.length - 1];
+
+        if (node.type === Syntax.Program) {
+            /* istanbul ignore else */
+            if (node.body.length > 0) {
+                return;
+            }
+        }
+
+        if (extra.trailingComments.length > 0) {
+            if (extra.trailingComments[0].range[0] >= node.range[1]) {
+                trailingComments = extra.trailingComments;
+                extra.trailingComments = [];
+            } else {
+                extra.trailingComments.length = 0;
+            }
+        } else {
+            if (last && last.trailingComments && last.trailingComments[0].range[0] >= node.range[1]) {
+                trailingComments = last.trailingComments;
+                delete last.trailingComments;
+            }
+        }
+
+        // Eating the stack.
+        if (last) {
+            while (last && last.range[0] >= node.range[0]) {
+                lastChild = last;
+                last = bottomRight.pop();
+            }
+        }
+
+        if (lastChild) {
+            if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
+                node.leadingComments = lastChild.leadingComments;
+                delete lastChild.leadingComments;
+            }
+        } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
+            node.leadingComments = extra.leadingComments;
+            extra.leadingComments = [];
+        }
+
+        if (trailingComments) {
+            node.trailingComments = trailingComments;
+        }
+
+        bottomRight.push(node);
+    }
+
+    function markerApply(marker, node) {
+        if (extra.range) {
+            node.range = [marker.offset, index];
+        }
+        if (extra.loc) {
+            node.loc = {
+                start: {
+                    line: marker.line,
+                    column: marker.col
+                },
+                end: {
+                    line: lineNumber,
+                    column: index - lineStart
+                }
+            };
+            node = delegate.postProcess(node);
+        }
+        if (extra.attachComment) {
+            processComment(node);
+        }
+        return node;
+    }
+
+    SyntaxTreeDelegate = {
+
+        name: 'SyntaxTree',
+
+        postProcess: function (node) {
+            return node;
+        },
+
+        createArrayExpression: function (elements) {
+            return {
+                type: Syntax.ArrayExpression,
+                elements: elements
+            };
+        },
+
+        createAssignmentExpression: function (operator, left, right) {
+            return {
+                type: Syntax.AssignmentExpression,
+                operator: operator,
+                left: left,
+                right: right
+            };
+        },
+
+        createBinaryExpression: function (operator, left, right) {
+            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
+                        Syntax.BinaryExpression;
+            return {
+                type: type,
+                operator: operator,
+                left: left,
+                right: right
+            };
+        },
+
+        createBlockStatement: function (body) {
+            return {
+                type: Syntax.BlockStatement,
+                body: body
+            };
+        },
+
+        createBreakStatement: function (label) {
+            return {
+                type: Syntax.BreakStatement,
+                label: label
+            };
+        },
+
+        createCallExpression: function (callee, args) {
+            return {
+                type: Syntax.CallExpression,
+                callee: callee,
+                'arguments': args
+            };
+        },
+
+        createCatchClause: function (param, body) {
+            return {
+                type: Syntax.CatchClause,
+                param: param,
+                body: body
+            };
+        },
+
+        createConditionalExpression: function (test, consequent, alternate) {
+            return {
+                type: Syntax.ConditionalExpression,
+                test: test,
+                consequent: consequent,
+                alternate: alternate
+            };
+        },
+
+        createContinueStatement: function (label) {
+            return {
+                type: Syntax.ContinueStatement,
+                label: label
+            };
+        },
+
+        createDebuggerStatement: function () {
+            return {
+                type: Syntax.DebuggerStatement
+            };
+        },
+
+        createDoWhileStatement: function (body, test) {
+            return {
+                type: Syntax.DoWhileStatement,
+                body: body,
+                test: test
+            };
+        },
+
+        createEmptyStatement: function () {
+            return {
+                type: Syntax.EmptyStatement
+            };
+        },
+
+        createExpressionStatement: function (expression) {
+            return {
+                type: Syntax.ExpressionStatement,
+                expression: expression
+            };
+        },
+
+        createForStatement: function (init, test, update, body) {
+            return {
+                type: Syntax.ForStatement,
+                init: init,
+                test: test,
+                update: update,
+                body: body
+            };
+        },
+
+        createForInStatement: function (left, right, body) {
+            return {
+                type: Syntax.ForInStatement,
+                left: left,
+                right: right,
+                body: body,
+                each: false
+            };
+        },
+
+        createForOfStatement: function (left, right, body) {
+            return {
+                type: Syntax.ForOfStatement,
+                left: left,
+                right: right,
+                body: body
+            };
+        },
+
+        createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
+                                             isAsync, returnType, typeParameters) {
+            var funDecl = {
+                type: Syntax.FunctionDeclaration,
+                id: id,
+                params: params,
+                defaults: defaults,
+                body: body,
+                rest: rest,
+                generator: generator,
+                expression: expression,
+                returnType: returnType,
+                typeParameters: typeParameters
+            };
+
+            if (isAsync) {
+                funDecl.async = true;
+            }
+
+            return funDecl;
+        },
+
+        createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
+                                            isAsync, returnType, typeParameters) {
+            var funExpr = {
+                type: Syntax.FunctionExpression,
+                id: id,
+                params: params,
+                defaults: defaults,
+                body: body,
+                rest: rest,
+                generator: generator,
+                expression: expression,
+                returnType: returnType,
+                typeParameters: typeParameters
+            };
+
+            if (isAsync) {
+                funExpr.async = true;
+            }
+
+            return funExpr;
+        },
+
+        createIdentifier: function (name) {
+            return {
+                type: Syntax.Identifier,
+                name: name,
+                // Only here to initialize the shape of the object to ensure
+                // that the 'typeAnnotation' key is ordered before others that
+                // are added later (like 'loc' and 'range'). This just helps
+                // keep the shape of Identifier nodes consistent with everything
+                // else.
+                typeAnnotation: undefined,
+                optional: undefined
+            };
+        },
+
+        createTypeAnnotation: function (typeAnnotation) {
+            return {
+                type: Syntax.TypeAnnotation,
+                typeAnnotation: typeAnnotation
+            };
+        },
+
+        createTypeCast: function (expression, typeAnnotation) {
+            return {
+                type: Syntax.TypeCastExpression,
+                expression: expression,
+                typeAnnotation: typeAnnotation
+            };
+        },
+
+        createFunctionTypeAnnotation: function (params, returnType, rest, typeParameters) {
+            return {
+                type: Syntax.FunctionTypeAnnotation,
+                params: params,
+                returnType: returnType,
+                rest: rest,
+                typeParameters: typeParameters
+            };
+        },
+
+        createFunctionTypeParam: function (name, typeAnnotation, optional) {
+            return {
+                type: Syntax.FunctionTypeParam,
+                name: name,
+                typeAnnotation: typeAnnotation,
+                optional: optional
+            };
+        },
+
+        createNullableTypeAnnotation: function (typeAnnotation) {
+            return {
+                type: Syntax.NullableTypeAnnotation,
+                typeAnnotation: typeAnnotation
+            };
+        },
+
+        createArrayTypeAnnotation: function (elementType) {
+            return {
+                type: Syntax.ArrayTypeAnnotation,
+                elementType: elementType
+            };
+        },
+
+        createGenericTypeAnnotation: function (id, typeParameters) {
+            return {
+                type: Syntax.GenericTypeAnnotation,
+                id: id,
+                typeParameters: typeParameters
+            };
+        },
+
+        createQualifiedTypeIdentifier: function (qualification, id) {
+            return {
+                type: Syntax.QualifiedTypeIdentifier,
+                qualification: qualification,
+                id: id
+            };
+        },
+
+        createTypeParameterDeclaration: function (params) {
+            return {
+                type: Syntax.TypeParameterDeclaration,
+                params: params
+            };
+        },
+
+        createTypeParameterInstantiation: function (params) {
+            return {
+                type: Syntax.TypeParameterInstantiation,
+                params: params
+            };
+        },
+
+        createAnyTypeAnnotation: function () {
+            return {
+                type: Syntax.AnyTypeAnnotation
+            };
+        },
+
+        createBooleanTypeAnnotation: function () {
+            return {
+                type: Syntax.BooleanTypeAnnotation
+            };
+        },
+
+        createNumberTypeAnnotation: function () {
+            return {
+                type: Syntax.NumberTypeAnnotation
+            };
+        },
+
+        createStringTypeAnnotation: function () {
+            return {
+                type: Syntax.StringTypeAnnotation
+            };
+        },
+
+        createStringLiteralTypeAnnotation: function (token) {
+            return {
+                type: Syntax.StringLiteralTypeAnnotation,
+                value: token.value,
+                raw: source.slice(token.range[0], token.range[1])
+            };
+        },
+
+        createVoidTypeAnnotation: function () {
+            return {
+                type: Syntax.VoidTypeAnnotation
+            };
+        },
+
+        createTypeofTypeAnnotation: function (argument) {
+            return {
+                type: Syntax.TypeofTypeAnnotation,
+                argument: argument
+            };
+        },
+
+        createTupleTypeAnnotation: function (types) {
+            return {
+                type: Syntax.TupleTypeAnnotation,
+                types: types
+            };
+        },
+
+        createObjectTypeAnnotation: function (properties, indexers, callProperties) {
+            return {
+                type: Syntax.ObjectTypeAnnotation,
+                properties: properties,
+                indexers: indexers,
+                callProperties: callProperties
+            };
+        },
+
+        createObjectTypeIndexer: function (id, key, value, isStatic) {
+            return {
+                type: Syntax.ObjectTypeIndexer,
+                id: id,
+                key: key,
+                value: value,
+                "static": isStatic
+            };
+        },
+
+        createObjectTypeCallProperty: function (value, isStatic) {
+            return {
+                type: Syntax.ObjectTypeCallProperty,
+                value: value,
+                "static": isStatic
+            };
+        },
+
+        createObjectTypeProperty: function (key, value, optional, isStatic) {
+            return {
+                type: Syntax.ObjectTypeProperty,
+                key: key,
+                value: value,
+                optional: optional,
+                "static": isStatic
+            };
+        },
+
+        createUnionTypeAnnotation: function (types) {
+            return {
+                type: Syntax.UnionTypeAnnotation,
+                types: types
+            };
+        },
+
+        createIntersectionTypeAnnotation: function (types) {
+            return {
+                type: Syntax.IntersectionTypeAnnotation,
+                types: types
+            };
+        },
+
+        createTypeAlias: function (id, typeParameters, right) {
+            return {
+                type: Syntax.TypeAlias,
+                id: id,
+                typeParameters: typeParameters,
+                right: right
+            };
+        },
+
+        createInterface: function (id, typeParameters, body, extended) {
+            return {
+                type: Syntax.InterfaceDeclaration,
+                id: id,
+                typeParameters: typeParameters,
+                body: body,
+                "extends": extended
+            };
+        },
+
+        createInterfaceExtends: function (id, typeParameters) {
+            return {
+                type: Syntax.InterfaceExtends,
+                id: id,
+                typeParameters: typeParameters
+            };
+        },
+
+        createDeclareFunction: function (id) {
+            return {
+                type: Syntax.DeclareFunction,
+                id: id
+            };
+        },
+
+        createDeclareVariable: function (id) {
+            return {
+                type: Syntax.DeclareVariable,
+                id: id
+            };
+        },
+
+        createDeclareModule: function (id, body) {
+            return {
+                type: Syntax.DeclareModule,
+                id: id,
+                body: body
+            };
+        },
+
+        createJSXAttribute: function (name, value) {
+            return {
+                type: Syntax.JSXAttribute,
+                name: name,
+                value: value || null
+            };
+        },
+
+        createJSXSpreadAttribute: function (argument) {
+            return {
+                type: Syntax.JSXSpreadAttribute,
+                argument: argument
+            };
+        },
+
+        createJSXIdentifier: function (name) {
+            return {
+                type: Syntax.JSXIdentifier,
+                name: name
+            };
+        },
+
+        createJSXNamespacedName: function (namespace, name) {
+            return {
+                type: Syntax.JSXNamespacedName,
+                namespace: namespace,
+                name: name
+            };
+        },
+
+        createJSXMemberExpression: function (object, property) {
+            return {
+                type: Syntax.JSXMemberExpression,
+                object: object,
+                property: property
+            };
+        },
+
+        createJSXElement: function (openingElement, closingElement, children) {
+            return {
+                type: Syntax.JSXElement,
+                openingElement: openingElement,
+                closingElement: closingElement,
+                children: children
+            };
+        },
+
+        createJSXEmptyExpression: function () {
+            return {
+                type: Syntax.JSXEmptyExpression
+            };
+        },
+
+        createJSXExpressionContainer: function (expression) {
+            return {
+                type: Syntax.JSXExpressionContainer,
+                expression: expression
+            };
+        },
+
+        createJSXOpeningElement: function (name, attributes, selfClosing) {
+            return {
+                type: Syntax.JSXOpeningElement,
+                name: name,
+                selfClosing: selfClosing,
+                attributes: attributes
+            };
+        },
+
+        createJSXClosingElement: function (name) {
+            return {
+                type: Syntax.JSXClosingElement,
+                name: name
+            };
+        },
+
+        createIfStatement: function (test, consequent, alternate) {
+            return {
+                type: Syntax.IfStatement,
+                test: test,
+                consequent: consequent,
+                alternate: alternate
+            };
+        },
+
+        createLabeledStatement: function (label, body) {
+            return {
+                type: Syntax.LabeledStatement,
+                label: label,
+                body: body
+            };
+        },
+
+        createLiteral: function (token) {
+            var object = {
+                type: Syntax.Literal,
+                value: token.value,
+                raw: source.slice(token.range[0], token.range[1])
+            };
+            if (token.regex) {
+                object.regex = token.regex;
+            }
+            return object;
+        },
+
+        createMemberExpression: function (accessor, object, property) {
+            return {
+                type: Syntax.MemberExpression,
+                computed: accessor === '[',
+                object: object,
+                property: property
+            };
+        },
+
+        createNewExpression: function (callee, args) {
+            return {
+                type: Syntax.NewExpression,
+                callee: callee,
+                'arguments': args
+            };
+        },
+
+        createObjectExpression: function (properties) {
+            return {
+                type: Syntax.ObjectExpression,
+                properties: properties
+            };
+        },
+
+        createPostfixExpression: function (operator, argument) {
+            return {
+                type: Syntax.UpdateExpression,
+                operator: operator,
+                argument: argument,
+                prefix: false
+            };
+        },
+
+        createProgram: function (body) {
+            return {
+                type: Syntax.Program,
+                body: body
+            };
+        },
+
+        createProperty: function (kind, key, value, method, shorthand, computed) {
+            return {
+                type: Syntax.Property,
+                key: key,
+                value: value,
+                kind: kind,
+                method: method,
+                shorthand: shorthand,
+                computed: computed
+            };
+        },
+
+        createReturnStatement: function (argument) {
+            return {
+                type: Syntax.ReturnStatement,
+                argument: argument
+            };
+        },
+
+        createSequenceExpression: function (expressions) {
+            return {
+                type: Syntax.SequenceExpression,
+                expressions: expressions
+            };
+        },
+
+        createSwitchCase: function (test, consequent) {
+            return {
+                type: Syntax.SwitchCase,
+                test: test,
+                consequent: consequent
+            };
+        },
+
+        createSwitchStatement: function (discriminant, cases) {
+            return {
+                type: Syntax.SwitchStatement,
+                discriminant: discriminant,
+                cases: cases
+            };
+        },
+
+        createThisExpression: function () {
+            return {
+                type: Syntax.ThisExpression
+            };
+        },
+
+        createThrowStatement: function (argument) {
+            return {
+                type: Syntax.ThrowStatement,
+                argument: argument
+            };
+        },
+
+        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
+            return {
+                type: Syntax.TryStatement,
+                block: block,
+                guardedHandlers: guardedHandlers,
+                handlers: handlers,
+                finalizer: finalizer
+            };
+        },
+
+        createUnaryExpression: function (operator, argument) {
+            if (operator === '++' || operator === '--') {
+                return {
+                    type: Syntax.UpdateExpression,
+                    operator: operator,
+                    argument: argument,
+                    prefix: true
+                };
+            }
+            return {
+                type: Syntax.UnaryExpression,
+                operator: operator,
+                argument: argument,
+                prefix: true
+            };
+        },
+
+        createVariableDeclaration: function (declarations, kind) {
+            return {
+                type: Syntax.VariableDeclaration,
+                declarations: declarations,
+                kind: kind
+            };
+        },
+
+        createVariableDeclarator: function (id, init) {
+            return {
+                type: Syntax.VariableDeclarator,
+                id: id,
+                init: init
+            };
+        },
+
+        createWhileStatement: function (test, body) {
+            return {
+                type: Syntax.WhileStatement,
+                test: test,
+                body: body
+            };
+        },
+
+        createWithStatement: function (object, body) {
+            return {
+                type: Syntax.WithStatement,
+                object: object,
+                body: body
+            };
+        },
+
+        createTemplateElement: function (value, tail) {
+            return {
+                type: Syntax.TemplateElement,
+                value: value,
+                tail: tail
+            };
+        },
+
+        createTemplateLiteral: function (quasis, expressions) {
+            return {
+                type: Syntax.TemplateLiteral,
+                quasis: quasis,
+                expressions: expressions
+            };
+        },
+
+        createSpreadElement: function (argument) {
+            return {
+                type: Syntax.SpreadElement,
+                argument: argument
+            };
+        },
+
+        createSpreadProperty: function (argument) {
+            return {
+                type: Syntax.SpreadProperty,
+                argument: argument
+            };
+        },
+
+        createTaggedTemplateExpression: function (tag, quasi) {
+            return {
+                type: Syntax.TaggedTemplateExpression,
+                tag: tag,
+                quasi: quasi
+            };
+        },
+
+        createArrowFunctionExpression: function (params, defaults, body, rest, expression, isAsync) {
+            var arrowExpr = {
+                type: Syntax.ArrowFunctionExpression,
+                id: null,
+                params: params,
+                defaults: defaults,
+                body: body,
+                rest: rest,
+                generator: false,
+                expression: expression
+            };
+
+            if (isAsync) {
+                arrowExpr.async = true;
+            }
+
+            return arrowExpr;
+        },
+
+        createMethodDefinition: function (propertyType, kind, key, value, computed) {
+            return {
+                type: Syntax.MethodDefinition,
+                key: key,
+                value: value,
+                kind: kind,
+                'static': propertyType === ClassPropertyType["static"],
+                computed: computed
+            };
+        },
+
+        createClassProperty: function (key, typeAnnotation, computed, isStatic) {
+            return {
+                type: Syntax.ClassProperty,
+                key: key,
+                typeAnnotation: typeAnnotation,
+                computed: computed,
+                "static": isStatic
+            };
+        },
+
+        createClassBody: function (body) {
+            return {
+                type: Syntax.ClassBody,
+                body: body
+            };
+        },
+
+        createClassImplements: function (id, typeParameters) {
+            return {
+                type: Syntax.ClassImplements,
+                id: id,
+                typeParameters: typeParameters
+            };
+        },
+
+        createClassExpression: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
+            return {
+                type: Syntax.ClassExpression,
+                id: id,
+                superClass: superClass,
+                body: body,
+                typeParameters: typeParameters,
+                superTypeParameters: superTypeParameters,
+                "implements": implemented
+            };
+        },
+
+        createClassDeclaration: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
+            return {
+                type: Syntax.ClassDeclaration,
+                id: id,
+                superClass: superClass,
+                body: body,
+                typeParameters: typeParameters,
+                superTypeParameters: superTypeParameters,
+                "implements": implemented
+            };
+        },
+
+        createModuleSpecifier: function (token) {
+            return {
+                type: Syntax.ModuleSpecifier,
+                value: token.value,
+                raw: source.slice(token.range[0], token.range[1])
+            };
+        },
+
+        createExportSpecifier: function (id, name) {
+            return {
+                type: Syntax.ExportSpecifier,
+                id: id,
+                name: name
+            };
+        },
+
+        createExportBatchSpecifier: function () {
+            return {
+                type: Syntax.ExportBatchSpecifier
+            };
+        },
+
+        createImportDefaultSpecifier: function (id) {
+            return {
+                type: Syntax.ImportDefaultSpecifier,
+                id: id
+            };
+        },
+
+        createImportNamespaceSpecifier: function (id) {
+            return {
+                type: Syntax.ImportNamespaceSpecifier,
+                id: id
+            };
+        },
+
+        createExportDeclaration: function (isDefault, declaration, specifiers, src) {
+            return {
+                type: Syntax.ExportDeclaration,
+                'default': !!isDefault,
+                declaration: declaration,
+                specifiers: specifiers,
+                source: src
+            };
+        },
+
+        createImportSpecifier: function (id, name) {
+            return {
+                type: Syntax.ImportSpecifier,
+                id: id,
+                name: name
+            };
+        },
+
+        createImportDeclaration: function (specifiers, src, isType) {
+            return {
+                type: Syntax.ImportDeclaration,
+                specifiers: specifiers,
+                source: src,
+                isType: isType
+            };
+        },
+
+        createYieldExpression: function (argument, dlg) {
+            return {
+                type: Syntax.YieldExpression,
+                argument: argument,
+                delegate: dlg
+            };
+        },
+
+        createAwaitExpression: function (argument) {
+            return {
+                type: Syntax.AwaitExpression,
+                argument: argument
+            };
+        },
+
+        createComprehensionExpression: function (filter, blocks, body) {
+            return {
+                type: Syntax.ComprehensionExpression,
+                filter: filter,
+                blocks: blocks,
+                body: body
+            };
+        }
+
+    };
+
+    // Return true if there is a line terminator before the next token.
+
+    function peekLineTerminator() {
+        var pos, line, start, found;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        skipComment();
+        found = lineNumber !== line;
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return found;
+    }
+
+    // Throw an exception
+
+    function throwError(token, messageFormat) {
+        var error,
+            args = Array.prototype.slice.call(arguments, 2),
+            msg = messageFormat.replace(
+                /%(\d)/g,
+                function (whole, idx) {
+                    assert(idx < args.length, 'Message reference must be in range');
+                    return args[idx];
+                }
+            );
+
+        if (typeof token.lineNumber === 'number') {
+            error = new Error('Line ' + token.lineNumber + ': ' + msg);
+            error.index = token.range[0];
+            error.lineNumber = token.lineNumber;
+            error.column = token.range[0] - lineStart + 1;
+        } else {
+            error = new Error('Line ' + lineNumber + ': ' + msg);
+            error.index = index;
+            error.lineNumber = lineNumber;
+            error.column = index - lineStart + 1;
+        }
+
+        error.description = msg;
+        throw error;
+    }
+
+    function throwErrorTolerant() {
+        try {
+            throwError.apply(null, arguments);
+        } catch (e) {
+            if (extra.errors) {
+                extra.errors.push(e);
+            } else {
+                throw e;
+            }
+        }
+    }
+
+
+    // Throw an exception because of the token.
+
+    function throwUnexpected(token) {
+        if (token.type === Token.EOF) {
+            throwError(token, Messages.UnexpectedEOS);
+        }
+
+        if (token.type === Token.NumericLiteral) {
+            throwError(token, Messages.UnexpectedNumber);
+        }
+
+        if (token.type === Token.StringLiteral || token.type === Token.JSXText) {
+            throwError(token, Messages.UnexpectedString);
+        }
+
+        if (token.type === Token.Identifier) {
+            throwError(token, Messages.UnexpectedIdentifier);
+        }
+
+        if (token.type === Token.Keyword) {
+            if (isFutureReservedWord(token.value)) {
+                throwError(token, Messages.UnexpectedReserved);
+            } else if (strict && isStrictModeReservedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictReservedWord);
+                return;
+            }
+            throwError(token, Messages.UnexpectedToken, token.value);
+        }
+
+        if (token.type === Token.Template) {
+            throwError(token, Messages.UnexpectedTemplate, token.value.raw);
+        }
+
+        // BooleanLiteral, NullLiteral, or Punctuator.
+        throwError(token, Messages.UnexpectedToken, token.value);
+    }
+
+    // Expect the next token to match the specified punctuator.
+    // If not, an exception will be thrown.
+
+    function expect(value) {
+        var token = lex();
+        if (token.type !== Token.Punctuator || token.value !== value) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Expect the next token to match the specified keyword.
+    // If not, an exception will be thrown.
+
+    function expectKeyword(keyword, contextual) {
+        var token = lex();
+        if (token.type !== (contextual ? Token.Identifier : Token.Keyword) ||
+                token.value !== keyword) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Expect the next token to match the specified contextual keyword.
+    // If not, an exception will be thrown.
+
+    function expectContextualKeyword(keyword) {
+        return expectKeyword(keyword, true);
+    }
+
+    // Return true if the next token matches the specified punctuator.
+
+    function match(value) {
+        return lookahead.type === Token.Punctuator && lookahead.value === value;
+    }
+
+    // Return true if the next token matches the specified keyword
+
+    function matchKeyword(keyword, contextual) {
+        var expectedType = contextual ? Token.Identifier : Token.Keyword;
+        return lookahead.type === expectedType && lookahead.value === keyword;
+    }
+
+    // Return true if the next token matches the specified contextual keyword
+
+    function matchContextualKeyword(keyword) {
+        return matchKeyword(keyword, true);
+    }
+
+    // Return true if the next token is an assignment operator
+
+    function matchAssign() {
+        var op;
+
+        if (lookahead.type !== Token.Punctuator) {
+            return false;
+        }
+        op = lookahead.value;
+        return op === '=' ||
+            op === '*=' ||
+            op === '/=' ||
+            op === '%=' ||
+            op === '+=' ||
+            op === '-=' ||
+            op === '<<=' ||
+            op === '>>=' ||
+            op === '>>>=' ||
+            op === '&=' ||
+            op === '^=' ||
+            op === '|=';
+    }
+
+    // Note that 'yield' is treated as a keyword in strict mode, but a
+    // contextual keyword (identifier) in non-strict mode, so we need to
+    // use matchKeyword('yield', false) and matchKeyword('yield', true)
+    // (i.e. matchContextualKeyword) appropriately.
+    function matchYield() {
+        return state.yieldAllowed && matchKeyword('yield', !strict);
+    }
+
+    function matchAsync() {
+        var backtrackToken = lookahead, matches = false;
+
+        if (matchContextualKeyword('async')) {
+            lex(); // Make sure peekLineTerminator() starts after 'async'.
+            matches = !peekLineTerminator();
+            rewind(backtrackToken); // Revert the lex().
+        }
+
+        return matches;
+    }
+
+    function matchAwait() {
+        return state.awaitAllowed && matchContextualKeyword('await');
+    }
+
+    function consumeSemicolon() {
+        var line, oldIndex = index, oldLineNumber = lineNumber,
+            oldLineStart = lineStart, oldLookahead = lookahead;
+
+        // Catch the very common case first: immediately a semicolon (char #59).
+        if (source.charCodeAt(index) === 59) {
+            lex();
+            return;
+        }
+
+        line = lineNumber;
+        skipComment();
+        if (lineNumber !== line) {
+            index = oldIndex;
+            lineNumber = oldLineNumber;
+            lineStart = oldLineStart;
+            lookahead = oldLookahead;
+            return;
+        }
+
+        if (match(';')) {
+            lex();
+            return;
+        }
+
+        if (lookahead.type !== Token.EOF && !match('}')) {
+            throwUnexpected(lookahead);
+        }
+    }
+
+    // Return true if provided expression is LeftHandSideExpression
+
+    function isLeftHandSide(expr) {
+        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
+    }
+
+    function isAssignableLeftHandSide(expr) {
+        return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
+    }
+
+    // 11.1.4 Array Initialiser
+
+    function parseArrayInitialiser() {
+        var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true,
+            marker = markerCreate();
+
+        expect('[');
+        while (!match(']')) {
+            if (lookahead.value === 'for' &&
+                    lookahead.type === Token.Keyword) {
+                if (!possiblecomprehension) {
+                    throwError({}, Messages.ComprehensionError);
+                }
+                matchKeyword('for');
+                tmp = parseForStatement({ignoreBody: true});
+                tmp.of = tmp.type === Syntax.ForOfStatement;
+                tmp.type = Syntax.ComprehensionBlock;
+                if (tmp.left.kind) { // can't be let or const
+                    throwError({}, Messages.ComprehensionError);
+                }
+                blocks.push(tmp);
+            } else if (lookahead.value === 'if' &&
+                           lookahead.type === Token.Keyword) {
+                if (!possiblecomprehension) {
+                    throwError({}, Messages.ComprehensionError);
+                }
+                expectKeyword('if');
+                expect('(');
+                filter = parseExpression();
+                expect(')');
+            } else if (lookahead.value === ',' &&
+                           lookahead.type === Token.Punctuator) {
+                possiblecomprehension = false; // no longer allowed.
+                lex();
+                elements.push(null);
+            } else {
+                tmp = parseSpreadOrAssignmentExpression();
+                elements.push(tmp);
+                if (tmp && tmp.type === Syntax.SpreadElement) {
+                    if (!match(']')) {
+                        throwError({}, Messages.ElementAfterSpreadElement);
+                    }
+                } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
+                    expect(','); // this lexes.
+                    possiblecomprehension = false;
+                }
+            }
+        }
+
+        expect(']');
+
+        if (filter && !blocks.length) {
+            throwError({}, Messages.ComprehensionRequiresBlock);
+        }
+
+        if (blocks.length) {
+            if (elements.length !== 1) {
+                throwError({}, Messages.ComprehensionError);
+            }
+            return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
+        }
+        return markerApply(marker, delegate.createArrayExpression(elements));
+    }
+
+    // 11.1.5 Object Initialiser
+
+    function parsePropertyFunction(options) {
+        var previousStrict, previousYieldAllowed, previousAwaitAllowed,
+            params, defaults, body, marker = markerCreate();
+
+        previousStrict = strict;
+        previousYieldAllowed = state.yieldAllowed;
+        state.yieldAllowed = options.generator;
+        previousAwaitAllowed = state.awaitAllowed;
+        state.awaitAllowed = options.async;
+        params = options.params || [];
+        defaults = options.defaults || [];
+
+        body = parseConciseBody();
+        if (options.name && strict && isRestrictedWord(params[0].name)) {
+            throwErrorTolerant(options.name, Messages.StrictParamName);
+        }
+        strict = previousStrict;
+        state.yieldAllowed = previousYieldAllowed;
+        state.awaitAllowed = previousAwaitAllowed;
+
+        return markerApply(marker, delegate.createFunctionExpression(
+            null,
+            params,
+            defaults,
+            body,
+            options.rest || null,
+            options.generator,
+            body.type !== Syntax.BlockStatement,
+            options.async,
+            options.returnType,
+            options.typeParameters
+        ));
+    }
+
+
+    function parsePropertyMethodFunction(options) {
+        var previousStrict, tmp, method;
+
+        previousStrict = strict;
+        strict = true;
+
+        tmp = parseParams();
+
+        if (tmp.stricted) {
+            throwErrorTolerant(tmp.stricted, tmp.message);
+        }
+
+        method = parsePropertyFunction({
+            params: tmp.params,
+            defaults: tmp.defaults,
+            rest: tmp.rest,
+            generator: options.generator,
+            async: options.async,
+            returnType: tmp.returnType,
+            typeParameters: options.typeParameters
+        });
+
+        strict = previousStrict;
+
+        return method;
+    }
+
+
+    function parseObjectPropertyKey() {
+        var marker = markerCreate(),
+            token = lex(),
+            propertyKey,
+            result;
+
+        // Note: This function is called only from parseObjectProperty(), where
+        // EOF and Punctuator tokens are already filtered out.
+
+        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
+            if (strict && token.octal) {
+                throwErrorTolerant(token, Messages.StrictOctalLiteral);
+            }
+            return markerApply(marker, delegate.createLiteral(token));
+        }
+
+        if (token.type === Token.Punctuator && token.value === '[') {
+            // For computed properties we should skip the [ and ], and
+            // capture in marker only the assignment expression itself.
+            marker = markerCreate();
+            propertyKey = parseAssignmentExpression();
+            result = markerApply(marker, propertyKey);
+            expect(']');
+            return result;
+        }
+
+        return markerApply(marker, delegate.createIdentifier(token.value));
+    }
+
+    function parseObjectProperty() {
+        var token, key, id, param, computed,
+            marker = markerCreate(), returnType, typeParameters;
+
+        token = lookahead;
+        computed = (token.value === '[' && token.type === Token.Punctuator);
+
+        if (token.type === Token.Identifier || computed || matchAsync()) {
+            id = parseObjectPropertyKey();
+
+            if (match(':')) {
+                lex();
+
+                return markerApply(
+                    marker,
+                    delegate.createProperty(
+                        'init',
+                        id,
+                        parseAssignmentExpression(),
+                        false,
+                        false,
+                        computed
+                    )
+                );
+            }
+
+            if (match('(') || match('<')) {
+                if (match('<')) {
+                    typeParameters = parseTypeParameterDeclaration();
+                }
+                return markerApply(
+                    marker,
+                    delegate.createProperty(
+                        'init',
+                        id,
+                        parsePropertyMethodFunction({
+                            generator: false,
+                            async: false,
+                            typeParameters: typeParameters
+                        }),
+                        true,
+                        false,
+                        computed
+                    )
+                );
+            }
+
+            // Property Assignment: Getter and Setter.
+
+            if (token.value === 'get') {
+                computed = (lookahead.value === '[');
+                key = parseObjectPropertyKey();
+
+                expect('(');
+                expect(')');
+                if (match(':')) {
+                    returnType = parseTypeAnnotation();
+                }
+
+                return markerApply(
+                    marker,
+                    delegate.createProperty(
+                        'get',
+                        key,
+                        parsePropertyFunction({
+                            generator: false,
+                            async: false,
+                            returnType: returnType
+                        }),
+                        false,
+                        false,
+                        computed
+                    )
+                );
+            }
+
+            if (token.value === 'set') {
+                computed = (lookahead.value === '[');
+                key = parseObjectPropertyKey();
+
+                expect('(');
+                token = lookahead;
+                param = [ parseTypeAnnotatableIdentifier() ];
+                expect(')');
+                if (match(':')) {
+                    returnType = parseTypeAnnotation();
+                }
+
+                return markerApply(
+                    marker,
+                    delegate.createProperty(
+                        'set',
+                        key,
+                        parsePropertyFunction({
+                            params: param,
+                            generator: false,
+                            async: false,
+                            name: token,
+                            returnType: returnType
+                        }),
+                        false,
+                        false,
+                        computed
+                    )
+                );
+            }
+
+            if (token.value === 'async') {
+                computed = (lookahead.value === '[');
+                key = parseObjectPropertyKey();
+
+                if (match('<')) {
+                    typeParameters = parseTypeParameterDeclaration();
+                }
+
+                return markerApply(
+                    marker,
+                    delegate.createProperty(
+                        'init',
+                        key,
+                        parsePropertyMethodFunction({
+                            generator: false,
+                            async: true,
+                            typeParameters: typeParameters
+                        }),
+                        true,
+                        false,
+                        computed
+                    )
+                );
+            }
+
+            if (computed) {
+                // Computed properties can only be used with full notation.
+                throwUnexpected(lookahead);
+            }
+
+            return markerApply(
+                marker,
+                delegate.createProperty('init', id, id, false, true, false)
+            );
+        }
+
+        if (token.type === Token.EOF || token.type === Token.Punctuator) {
+            if (!match('*')) {
+                throwUnexpected(token);
+            }
+            lex();
+
+            computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');
+
+            id = parseObjectPropertyKey();
+
+            if (match('<')) {
+                typeParameters = parseTypeParameterDeclaration();
+            }
+
+            if (!match('(')) {
+                throwUnexpected(lex());
+            }
+
+            return markerApply(marker, delegate.createProperty(
+                'init',
+                id,
+                parsePropertyMethodFunction({
+                    generator: true,
+                    typeParameters: typeParameters
+                }),
+                true,
+                false,
+                computed
+            ));
+        }
+        key = parseObjectPropertyKey();
+        if (match(':')) {
+            lex();
+            return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
+        }
+        if (match('(') || match('<')) {
+            if (match('<')) {
+                typeParameters = parseTypeParameterDeclaration();
+            }
+            return markerApply(marker, delegate.createProperty(
+                'init',
+                key,
+                parsePropertyMethodFunction({
+                    generator: false,
+                    typeParameters: typeParameters
+                }),
+                true,
+                false,
+                false
+            ));
+        }
+        throwUnexpected(lex());
+    }
+
+    function parseObjectSpreadProperty() {
+        var marker = markerCreate();
+        expect('...');
+        return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
+    }
+
+    function getFieldName(key) {
+        var toString = String;
+        if (key.type === Syntax.Identifier) {
+            return key.name;
+        }
+        return toString(key.value);
+    }
+
+    function parseObjectInitialiser() {
+        var properties = [], property, name, kind, storedKind, map = new StringMap(),
+            marker = markerCreate(), toString = String;
+
+        expect('{');
+
+        while (!match('}')) {
+            if (match('...')) {
+                property = parseObjectSpreadProperty();
+            } else {
+                property = parseObjectProperty();
+
+                if (property.key.type === Syntax.Identifier) {
+                    name = property.key.name;
+                } else {
+                    name = toString(property.key.value);
+                }
+                kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
+
+                if (map.has(name)) {
+                    storedKind = map.get(name);
+                    if (storedKind === PropertyKind.Data) {
+                        if (strict && kind === PropertyKind.Data) {
+                            throwErrorTolerant({}, Messages.StrictDuplicateProperty);
+                        } else if (kind !== PropertyKind.Data) {
+                            throwErrorTolerant({}, Messages.AccessorDataProperty);
+                        }
+                    } else {
+                        if (kind === PropertyKind.Data) {
+                            throwErrorTolerant({}, Messages.AccessorDataProperty);
+                        } else if (storedKind & kind) {
+                            throwErrorTolerant({}, Messages.AccessorGetSet);
+                        }
+                    }
+                    map.set(name, storedKind | kind);
+                } else {
+                    map.set(name, kind);
+                }
+            }
+
+            properties.push(property);
+
+            if (!match('}')) {
+                expect(',');
+            }
+        }
+
+        expect('}');
+
+        return markerApply(marker, delegate.createObjectExpression(properties));
+    }
+
+    function parseTemplateElement(option) {
+        var marker = markerCreate(),
+            token = scanTemplateElement(option);
+        if (strict && token.octal) {
+            throwError(token, Messages.StrictOctalLiteral);
+        }
+        return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
+    }
+
+    function parseTemplateLiteral() {
+        var quasi, quasis, expressions, marker = markerCreate();
+
+        quasi = parseTemplateElement({ head: true });
+        quasis = [ quasi ];
+        expressions = [];
+
+        while (!quasi.tail) {
+            expressions.push(parseExpression());
+            quasi = parseTemplateElement({ head: false });
+            quasis.push(quasi);
+        }
+
+        return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
+    }
+
+    // 11.1.6 The Grouping Operator
+
+    function parseGroupExpression() {
+        var expr, marker, typeAnnotation;
+
+        expect('(');
+
+        ++state.parenthesizedCount;
+
+        marker = markerCreate();
+
+        expr = parseExpression();
+
+        if (match(':')) {
+            typeAnnotation = parseTypeAnnotation();
+            expr = markerApply(marker, delegate.createTypeCast(
+                expr,
+                typeAnnotation
+            ));
+        }
+
+        expect(')');
+
+        return expr;
+    }
+
+    function matchAsyncFuncExprOrDecl() {
+        var token;
+
+        if (matchAsync()) {
+            token = lookahead2();
+            if (token.type === Token.Keyword && token.value === 'function') {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    // 11.1 Primary Expressions
+
+    function parsePrimaryExpression() {
+        var marker, type, token, expr;
+
+        type = lookahead.type;
+
+        if (type === Token.Identifier) {
+            marker = markerCreate();
+            return markerApply(marker, delegate.createIdentifier(lex().value));
+        }
+
+        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
+            if (strict && lookahead.octal) {
+                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
+            }
+            marker = markerCreate();
+            return markerApply(marker, delegate.createLiteral(lex()));
+        }
+
+        if (type === Token.Keyword) {
+            if (matchKeyword('this')) {
+                marker = markerCreate();
+                lex();
+                return markerApply(marker, delegate.createThisExpression());
+            }
+
+            if (matchKeyword('function')) {
+                return parseFunctionExpression();
+            }
+
+            if (matchKeyword('class')) {
+                return parseClassExpression();
+            }
+
+            if (matchKeyword('super')) {
+                marker = markerCreate();
+                lex();
+                return markerApply(marker, delegate.createIdentifier('super'));
+            }
+        }
+
+        if (type === Token.BooleanLiteral) {
+            marker = markerCreate();
+            token = lex();
+            token.value = (token.value === 'true');
+            return markerApply(marker, delegate.createLiteral(token));
+        }
+
+        if (type === Token.NullLiteral) {
+            marker = markerCreate();
+            token = lex();
+            token.value = null;
+            return markerApply(marker, delegate.createLiteral(token));
+        }
+
+        if (match('[')) {
+            return parseArrayInitialiser();
+        }
+
+        if (match('{')) {
+            return parseObjectInitialiser();
+        }
+
+        if (match('(')) {
+            return parseGroupExpression();
+        }
+
+        if (match('/') || match('/=')) {
+            marker = markerCreate();
+            expr = delegate.createLiteral(scanRegExp());
+            peek();
+            return markerApply(marker, expr);
+        }
+
+        if (type === Token.Template) {
+            return parseTemplateLiteral();
+        }
+
+        if (match('<')) {
+            return parseJSXElement();
+        }
+
+        throwUnexpected(lex());
+    }
+
+    // 11.2 Left-Hand-Side Expressions
+
+    function parseArguments() {
+        var args = [], arg;
+
+        expect('(');
+
+        if (!match(')')) {
+            while (index < length) {
+                arg = parseSpreadOrAssignmentExpression();
+                args.push(arg);
+
+                if (match(')')) {
+                    break;
+                } else if (arg.type === Syntax.SpreadElement) {
+                    throwError({}, Messages.ElementAfterSpreadElement);
+                }
+
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        return args;
+    }
+
+    function parseSpreadOrAssignmentExpression() {
+        if (match('...')) {
+            var marker = markerCreate();
+            lex();
+            return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
+        }
+        return parseAssignmentExpression();
+    }
+
+    function parseNonComputedProperty() {
+        var marker = markerCreate(),
+            token = lex();
+
+        if (!isIdentifierName(token)) {
+            throwUnexpected(token);
+        }
+
+        return markerApply(marker, delegate.createIdentifier(token.value));
+    }
+
+    function parseNonComputedMember() {
+        expect('.');
+
+        return parseNonComputedProperty();
+    }
+
+    function parseComputedMember() {
+        var expr;
+
+        expect('[');
+
+        expr = parseExpression();
+
+        expect(']');
+
+        return expr;
+    }
+
+    function parseNewExpression() {
+        var callee, args, marker = markerCreate();
+
+        expectKeyword('new');
+        callee = parseLeftHandSideExpression();
+        args = match('(') ? parseArguments() : [];
+
+        return markerApply(marker, delegate.createNewExpression(callee, args));
+    }
+
+    function parseLeftHandSideExpressionAllowCall() {
+        var expr, args, marker = markerCreate();
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[') || match('(') || lookahead.type === Token.Template) {
+            if (match('(')) {
+                args = parseArguments();
+                expr = markerApply(marker, delegate.createCallExpression(expr, args));
+            } else if (match('[')) {
+                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
+            } else if (match('.')) {
+                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
+            } else {
+                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
+            }
+        }
+
+        return expr;
+    }
+
+    function parseLeftHandSideExpression() {
+        var expr, marker = markerCreate();
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[') || lookahead.type === Token.Template) {
+            if (match('[')) {
+                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
+            } else if (match('.')) {
+                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
+            } else {
+                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
+            }
+        }
+
+        return expr;
+    }
+
+    // 11.3 Postfix Expressions
+
+    function parsePostfixExpression() {
+        var marker = markerCreate(),
+            expr = parseLeftHandSideExpressionAllowCall(),
+            token;
+
+        if (lookahead.type !== Token.Punctuator) {
+            return expr;
+        }
+
+        if ((match('++') || match('--')) && !peekLineTerminator()) {
+            // 11.3.1, 11.3.2
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPostfix);
+            }
+
+            if (!isLeftHandSide(expr)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+
+            token = lex();
+            expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
+        }
+
+        return expr;
+    }
+
+    // 11.4 Unary Operators
+
+    function parseUnaryExpression() {
+        var marker, token, expr;
+
+        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
+            return parsePostfixExpression();
+        }
+
+        if (match('++') || match('--')) {
+            marker = markerCreate();
+            token = lex();
+            expr = parseUnaryExpression();
+            // 11.4.4, 11.4.5
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPrefix);
+            }
+
+            if (!isLeftHandSide(expr)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+
+            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
+        }
+
+        if (match('+') || match('-') || match('~') || match('!')) {
+            marker = markerCreate();
+            token = lex();
+            expr = parseUnaryExpression();
+            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
+        }
+
+        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
+            marker = markerCreate();
+            token = lex();
+            expr = parseUnaryExpression();
+            expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
+            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
+                throwErrorTolerant({}, Messages.StrictDelete);
+            }
+            return expr;
+        }
+
+        return parsePostfixExpression();
+    }
+
+    function binaryPrecedence(token, allowIn) {
+        var prec = 0;
+
+        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
+            return 0;
+        }
+
+        switch (token.value) {
+        case '||':
+            prec = 1;
+            break;
+
+        case '&&':
+            prec = 2;
+            break;
+
+        case '|':
+            prec = 3;
+            break;
+
+        case '^':
+            prec = 4;
+            break;
+
+        case '&':
+            prec = 5;
+            break;
+
+        case '==':
+        case '!=':
+        case '===':
+        case '!==':
+            prec = 6;
+            break;
+
+        case '<':
+        case '>':
+        case '<=':
+        case '>=':
+        case 'instanceof':
+            prec = 7;
+            break;
+
+        case 'in':
+            prec = allowIn ? 7 : 0;
+            break;
+
+        case '<<':
+        case '>>':
+        case '>>>':
+            prec = 8;
+            break;
+
+        case '+':
+        case '-':
+            prec = 9;
+            break;
+
+        case '*':
+        case '/':
+        case '%':
+            prec = 11;
+            break;
+
+        default:
+            break;
+        }
+
+        return prec;
+    }
+
+    // 11.5 Multiplicative Operators
+    // 11.6 Additive Operators
+    // 11.7 Bitwise Shift Operators
+    // 11.8 Relational Operators
+    // 11.9 Equality Operators
+    // 11.10 Binary Bitwise Operators
+    // 11.11 Binary Logical Operators
+
+    function parseBinaryExpression() {
+        var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
+            marker, markers;
+
+        previousAllowIn = state.allowIn;
+        state.allowIn = true;
+
+        marker = markerCreate();
+        left = parseUnaryExpression();
+
+        token = lookahead;
+        prec = binaryPrecedence(token, previousAllowIn);
+        if (prec === 0) {
+            return left;
+        }
+        token.prec = prec;
+        lex();
+
+        markers = [marker, markerCreate()];
+        right = parseUnaryExpression();
+
+        stack = [left, token, right];
+
+        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {
+
+            // Reduce: make a binary expression from the three topmost entries.
+            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
+                right = stack.pop();
+                operator = stack.pop().value;
+                left = stack.pop();
+                expr = delegate.createBinaryExpression(operator, left, right);
+                markers.pop();
+                marker = markers.pop();
+                markerApply(marker, expr);
+                stack.push(expr);
+                markers.push(marker);
+            }
+
+            // Shift.
+            token = lex();
+            token.prec = prec;
+            stack.push(token);
+            markers.push(markerCreate());
+            expr = parseUnaryExpression();
+            stack.push(expr);
+        }
+
+        state.allowIn = previousAllowIn;
+
+        // Final reduce to clean-up the stack.
+        i = stack.length - 1;
+        expr = stack[i];
+        markers.pop();
+        while (i > 1) {
+            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
+            i -= 2;
+            marker = markers.pop();
+            markerApply(marker, expr);
+        }
+
+        return expr;
+    }
+
+
+    // 11.12 Conditional Operator
+
+    function parseConditionalExpression() {
+        var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
+        expr = parseBinaryExpression();
+
+        if (match('?')) {
+            lex();
+            previousAllowIn = state.allowIn;
+            state.allowIn = true;
+            consequent = parseAssignmentExpression();
+            state.allowIn = previousAllowIn;
+            expect(':');
+            alternate = parseAssignmentExpression();
+
+            expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
+        }
+
+        return expr;
+    }
+
+    // 11.13 Assignment Operators
+
+    // 12.14.5 AssignmentPattern
+
+    function reinterpretAsAssignmentBindingPattern(expr) {
+        var i, len, property, element;
+
+        if (expr.type === Syntax.ObjectExpression) {
+            expr.type = Syntax.ObjectPattern;
+            for (i = 0, len = expr.properties.length; i < len; i += 1) {
+                property = expr.properties[i];
+                if (property.type === Syntax.SpreadProperty) {
+                    if (i < len - 1) {
+                        throwError({}, Messages.PropertyAfterSpreadProperty);
+                    }
+                    reinterpretAsAssignmentBindingPattern(property.argument);
+                } else {
+                    if (property.kind !== 'init') {
+                        throwError({}, Messages.InvalidLHSInAssignment);
+                    }
+                    reinterpretAsAssignmentBindingPattern(property.value);
+                }
+            }
+        } else if (expr.type === Syntax.ArrayExpression) {
+            expr.type = Syntax.ArrayPattern;
+            for (i = 0, len = expr.elements.length; i < len; i += 1) {
+                element = expr.elements[i];
+                /* istanbul ignore else */
+                if (element) {
+                    reinterpretAsAssignmentBindingPattern(element);
+                }
+            }
+        } else if (expr.type === Syntax.Identifier) {
+            if (isRestrictedWord(expr.name)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+        } else if (expr.type === Syntax.SpreadElement) {
+            reinterpretAsAssignmentBindingPattern(expr.argument);
+            if (expr.argument.type === Syntax.ObjectPattern) {
+                throwError({}, Messages.ObjectPatternAsSpread);
+            }
+        } else {
+            /* istanbul ignore else */
+            if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+        }
+    }
+
+    // 13.2.3 BindingPattern
+
+    function reinterpretAsDestructuredParameter(options, expr) {
+        var i, len, property, element;
+
+        if (expr.type === Syntax.ObjectExpression) {
+            expr.type = Syntax.ObjectPattern;
+            for (i = 0, len = expr.properties.length; i < len; i += 1) {
+                property = expr.properties[i];
+                if (property.type === Syntax.SpreadProperty) {
+                    if (i < len - 1) {
+                        throwError({}, Messages.PropertyAfterSpreadProperty);
+                    }
+                    reinterpretAsDestructuredParameter(options, property.argument);
+                } else {
+                    if (property.kind !== 'init') {
+                        throwError({}, Messages.InvalidLHSInFormalsList);
+                    }
+                    reinterpretAsDestructuredParameter(options, property.value);
+                }
+            }
+        } else if (expr.type === Syntax.ArrayExpression) {
+            expr.type = Syntax.ArrayPattern;
+            for (i = 0, len = expr.elements.length; i < len; i += 1) {
+                element = expr.elements[i];
+                if (element) {
+                    reinterpretAsDestructuredParameter(options, element);
+                }
+            }
+        } else if (expr.type === Syntax.Identifier) {
+            validateParam(options, expr, expr.name);
+        } else if (expr.type === Syntax.SpreadElement) {
+            // BindingRestElement only allows BindingIdentifier
+            if (expr.argument.type !== Syntax.Identifier) {
+                throwError({}, Messages.InvalidLHSInFormalsList);
+            }
+            validateParam(options, expr.argument, expr.argument.name);
+        } else {
+            throwError({}, Messages.InvalidLHSInFormalsList);
+        }
+    }
+
+    function reinterpretAsCoverFormalsList(expressions) {
+        var i, len, param, params, defaults, defaultCount, options, rest;
+
+        params = [];
+        defaults = [];
+        defaultCount = 0;
+        rest = null;
+        options = {
+            paramSet: new StringMap()
+        };
+
+        for (i = 0, len = expressions.length; i < len; i += 1) {
+            param = expressions[i];
+            if (param.type === Syntax.Identifier) {
+                params.push(param);
+                defaults.push(null);
+                validateParam(options, param, param.name);
+            } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
+                reinterpretAsDestructuredParameter(options, param);
+                params.push(param);
+                defaults.push(null);
+            } else if (param.type === Syntax.SpreadElement) {
+                assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
+                if (param.argument.type !== Syntax.Identifier) {
+                    throwError({}, Messages.InvalidLHSInFormalsList);
+                }
+                reinterpretAsDestructuredParameter(options, param.argument);
+                rest = param.argument;
+            } else if (param.type === Syntax.AssignmentExpression) {
+                params.push(param.left);
+                defaults.push(param.right);
+                ++defaultCount;
+                validateParam(options, param.left, param.left.name);
+            } else {
+                return null;
+            }
+        }
+
+        if (options.message === Messages.StrictParamDupe) {
+            throwError(
+                strict ? options.stricted : options.firstRestricted,
+                options.message
+            );
+        }
+
+        if (defaultCount === 0) {
+            defaults = [];
+        }
+
+        return {
+            params: params,
+            defaults: defaults,
+            rest: rest,
+            stricted: options.stricted,
+            firstRestricted: options.firstRestricted,
+            message: options.message
+        };
+    }
+
+    function parseArrowFunctionExpression(options, marker) {
+        var previousStrict, previousYieldAllowed, previousAwaitAllowed, body;
+
+        expect('=>');
+
+        previousStrict = strict;
+        previousYieldAllowed = state.yieldAllowed;
+        state.yieldAllowed = false;
+        previousAwaitAllowed = state.awaitAllowed;
+        state.awaitAllowed = !!options.async;
+        body = parseConciseBody();
+
+        if (strict && options.firstRestricted) {
+            throwError(options.firstRestricted, options.message);
+        }
+        if (strict && options.stricted) {
+            throwErrorTolerant(options.stricted, options.message);
+        }
+
+        strict = previousStrict;
+        state.yieldAllowed = previousYieldAllowed;
+        state.awaitAllowed = previousAwaitAllowed;
+
+        return markerApply(marker, delegate.createArrowFunctionExpression(
+            options.params,
+            options.defaults,
+            body,
+            options.rest,
+            body.type !== Syntax.BlockStatement,
+            !!options.async
+        ));
+    }
+
+    function parseAssignmentExpression() {
+        var marker, expr, token, params, oldParenthesizedCount,
+            startsWithParen = false, backtrackToken = lookahead,
+            possiblyAsync = false;
+
+        if (matchYield()) {
+            return parseYieldExpression();
+        }
+
+        if (matchAwait()) {
+            return parseAwaitExpression();
+        }
+
+        oldParenthesizedCount = state.parenthesizedCount;
+
+        marker = markerCreate();
+
+        if (matchAsyncFuncExprOrDecl()) {
+            return parseFunctionExpression();
+        }
+
+        if (matchAsync()) {
+            // We can't be completely sure that this 'async' token is
+            // actually a contextual keyword modifying a function
+            // expression, so we might have to un-lex() it later by
+            // calling rewind(backtrackToken).
+            possiblyAsync = true;
+            lex();
+        }
+
+        if (match('(')) {
+            token = lookahead2();
+            if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
+                params = parseParams();
+                if (!match('=>')) {
+                    throwUnexpected(lex());
+                }
+                params.async = possiblyAsync;
+                return parseArrowFunctionExpression(params, marker);
+            }
+            startsWithParen = true;
+        }
+
+        token = lookahead;
+
+        // If the 'async' keyword is not followed by a '(' character or an
+        // identifier, then it can't be an arrow function modifier, and we
+        // should interpret it as a normal identifer.
+        if (possiblyAsync && !match('(') && token.type !== Token.Identifier) {
+            possiblyAsync = false;
+            rewind(backtrackToken);
+        }
+
+        expr = parseConditionalExpression();
+
+        if (match('=>') &&
+                (state.parenthesizedCount === oldParenthesizedCount ||
+                state.parenthesizedCount === (oldParenthesizedCount + 1))) {
+            if (expr.type === Syntax.Identifier) {
+                params = reinterpretAsCoverFormalsList([ expr ]);
+            } else if (expr.type === Syntax.AssignmentExpression ||
+                    expr.type === Syntax.ArrayExpression ||
+                    expr.type === Syntax.ObjectExpression) {
+                if (!startsWithParen) {
+                    throwUnexpected(lex());
+                }
+                params = reinterpretAsCoverFormalsList([ expr ]);
+            } else if (expr.type === Syntax.SequenceExpression) {
+                params = reinterpretAsCoverFormalsList(expr.expressions);
+            }
+            if (params) {
+                params.async = possiblyAsync;
+                return parseArrowFunctionExpression(params, marker);
+            }
+        }
+
+        // If we haven't returned by now, then the 'async' keyword was not
+        // a function modifier, and we should rewind and interpret it as a
+        // normal identifier.
+        if (possiblyAsync) {
+            possiblyAsync = false;
+            rewind(backtrackToken);
+            expr = parseConditionalExpression();
+        }
+
+        if (matchAssign()) {
+            // 11.13.1
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant(token, Messages.StrictLHSAssignment);
+            }
+
+            // ES.next draf 11.13 Runtime Semantics step 1
+            if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
+                reinterpretAsAssignmentBindingPattern(expr);
+            } else if (!isLeftHandSide(expr)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+
+            expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
+        }
+
+        return expr;
+    }
+
+    // 11.14 Comma Operator
+
+    function parseExpression() {
+        var marker, expr, expressions, sequence, spreadFound;
+
+        marker = markerCreate();
+        expr = parseAssignmentExpression();
+        expressions = [ expr ];
+
+        if (match(',')) {
+            while (index < length) {
+                if (!match(',')) {
+                    break;
+                }
+
+                lex();
+                expr = parseSpreadOrAssignmentExpression();
+                expressions.push(expr);
+
+                if (expr.type === Syntax.SpreadElement) {
+                    spreadFound = true;
+                    if (!match(')')) {
+                        throwError({}, Messages.ElementAfterSpreadElement);
+                    }
+                    break;
+                }
+            }
+
+            sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
+        }
+
+        if (spreadFound && lookahead2().value !== '=>') {
+            throwError({}, Messages.IllegalSpread);
+        }
+
+        return sequence || expr;
+    }
+
+    // 12.1 Block
+
+    function parseStatementList() {
+        var list = [],
+            statement;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            statement = parseSourceElement();
+            if (typeof statement === 'undefined') {
+                break;
+            }
+            list.push(statement);
+        }
+
+        return list;
+    }
+
+    function parseBlock() {
+        var block, marker = markerCreate();
+
+        expect('{');
+
+        block = parseStatementList();
+
+        expect('}');
+
+        return markerApply(marker, delegate.createBlockStatement(block));
+    }
+
+    // 12.2 Variable Statement
+
+    function parseTypeParameterDeclaration() {
+        var marker = markerCreate(), paramTypes = [];
+
+        expect('<');
+        while (!match('>')) {
+            paramTypes.push(parseTypeAnnotatableIdentifier());
+            if (!match('>')) {
+                expect(',');
+            }
+        }
+        expect('>');
+
+        return markerApply(marker, delegate.createTypeParameterDeclaration(
+            paramTypes
+        ));
+    }
+
+    function parseTypeParameterInstantiation() {
+        var marker = markerCreate(), oldInType = state.inType, paramTypes = [];
+
+        state.inType = true;
+
+        expect('<');
+        while (!match('>')) {
+            paramTypes.push(parseType());
+            if (!match('>')) {
+                expect(',');
+            }
+        }
+        expect('>');
+
+        state.inType = oldInType;
+
+        return markerApply(marker, delegate.createTypeParameterInstantiation(
+            paramTypes
+        ));
+    }
+
+    function parseObjectTypeIndexer(marker, isStatic) {
+        var id, key, value;
+
+        expect('[');
+        id = parseObjectPropertyKey();
+        expect(':');
+        key = parseType();
+        expect(']');
+        expect(':');
+        value = parseType();
+
+        return markerApply(marker, delegate.createObjectTypeIndexer(
+            id,
+            key,
+            value,
+            isStatic
+        ));
+    }
+
+    function parseObjectTypeMethodish(marker) {
+        var params = [], rest = null, returnType, typeParameters = null;
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+
+        expect('(');
+        while (lookahead.type === Token.Identifier) {
+            params.push(parseFunctionTypeParam());
+            if (!match(')')) {
+                expect(',');
+            }
+        }
+
+        if (match('...')) {
+            lex();
+            rest = parseFunctionTypeParam();
+        }
+        expect(')');
+        expect(':');
+        returnType = parseType();
+
+        return markerApply(marker, delegate.createFunctionTypeAnnotation(
+            params,
+            returnType,
+            rest,
+            typeParameters
+        ));
+    }
+
+    function parseObjectTypeMethod(marker, isStatic, key) {
+        var optional = false, value;
+        value = parseObjectTypeMethodish(marker);
+
+        return markerApply(marker, delegate.createObjectTypeProperty(
+            key,
+            value,
+            optional,
+            isStatic
+        ));
+    }
+
+    function parseObjectTypeCallProperty(marker, isStatic) {
+        var valueMarker = markerCreate();
+        return markerApply(marker, delegate.createObjectTypeCallProperty(
+            parseObjectTypeMethodish(valueMarker),
+            isStatic
+        ));
+    }
+
+    function parseObjectType(allowStatic) {
+        var callProperties = [], indexers = [], marker, optional = false,
+            properties = [], propertyKey, propertyTypeAnnotation,
+            token, isStatic, matchStatic;
+
+        expect('{');
+
+        while (!match('}')) {
+            marker = markerCreate();
+            matchStatic =
+                   strict
+                   ? matchKeyword('static')
+                   : matchContextualKeyword('static');
+
+            if (allowStatic && matchStatic) {
+                token = lex();
+                isStatic = true;
+            }
+
+            if (match('[')) {
+                indexers.push(parseObjectTypeIndexer(marker, isStatic));
+            } else if (match('(') || match('<')) {
+                callProperties.push(parseObjectTypeCallProperty(marker, allowStatic));
+            } else {
+                if (isStatic && match(':')) {
+                    propertyKey = markerApply(marker, delegate.createIdentifier(token));
+                    throwErrorTolerant(token, Messages.StrictReservedWord);
+                } else {
+                    propertyKey = parseObjectPropertyKey();
+                }
+                if (match('<') || match('(')) {
+                    // This is a method property
+                    properties.push(parseObjectTypeMethod(marker, isStatic, propertyKey));
+                } else {
+                    if (match('?')) {
+                        lex();
+                        optional = true;
+                    }
+                    expect(':');
+                    propertyTypeAnnotation = parseType();
+                    properties.push(markerApply(marker, delegate.createObjectTypeProperty(
+                        propertyKey,
+                        propertyTypeAnnotation,
+                        optional,
+                        isStatic
+                    )));
+                }
+            }
+
+            if (match(';')) {
+                lex();
+            } else if (!match('}')) {
+                throwUnexpected(lookahead);
+            }
+        }
+
+        expect('}');
+
+        return delegate.createObjectTypeAnnotation(
+            properties,
+            indexers,
+            callProperties
+        );
+    }
+
+    function parseGenericType() {
+        var marker = markerCreate(),
+            typeParameters = null, typeIdentifier;
+
+        typeIdentifier = parseVariableIdentifier();
+
+        while (match('.')) {
+            expect('.');
+            typeIdentifier = markerApply(marker, delegate.createQualifiedTypeIdentifier(
+                typeIdentifier,
+                parseVariableIdentifier()
+            ));
+        }
+
+        if (match('<')) {
+            typeParameters = parseTypeParameterInstantiation();
+        }
+
+        return markerApply(marker, delegate.createGenericTypeAnnotation(
+            typeIdentifier,
+            typeParameters
+        ));
+    }
+
+    function parseVoidType() {
+        var marker = markerCreate();
+        expectKeyword('void');
+        return markerApply(marker, delegate.createVoidTypeAnnotation());
+    }
+
+    function parseTypeofType() {
+        var argument, marker = markerCreate();
+        expectKeyword('typeof');
+        argument = parsePrimaryType();
+        return markerApply(marker, delegate.createTypeofTypeAnnotation(
+            argument
+        ));
+    }
+
+    function parseTupleType() {
+        var marker = markerCreate(), types = [];
+        expect('[');
+        // We allow trailing commas
+        while (index < length && !match(']')) {
+            types.push(parseType());
+            if (match(']')) {
+                break;
+            }
+            expect(',');
+        }
+        expect(']');
+        return markerApply(marker, delegate.createTupleTypeAnnotation(
+            types
+        ));
+    }
+
+    function parseFunctionTypeParam() {
+        var marker = markerCreate(), name, optional = false, typeAnnotation;
+        name = parseVariableIdentifier();
+        if (match('?')) {
+            lex();
+            optional = true;
+        }
+        expect(':');
+        typeAnnotation = parseType();
+        return markerApply(marker, delegate.createFunctionTypeParam(
+            name,
+            typeAnnotation,
+            optional
+        ));
+    }
+
+    function parseFunctionTypeParams() {
+        var ret = { params: [], rest: null };
+        while (lookahead.type === Token.Identifier) {
+            ret.params.push(parseFunctionTypeParam());
+            if (!match(')')) {
+                expect(',');
+            }
+        }
+
+        if (match('...')) {
+            lex();
+            ret.rest = parseFunctionTypeParam();
+        }
+        return ret;
+    }
+
+    // The parsing of types roughly parallels the parsing of expressions, and
+    // primary types are kind of like primary expressions...they're the
+    // primitives with which other types are constructed.
+    function parsePrimaryType() {
+        var params = null, returnType = null,
+            marker = markerCreate(), rest = null, tmp,
+            typeParameters, token, type, isGroupedType = false;
+
+        switch (lookahead.type) {
+        case Token.Identifier:
+            switch (lookahead.value) {
+            case 'any':
+                lex();
+                return markerApply(marker, delegate.createAnyTypeAnnotation());
+            case 'bool':  // fallthrough
+            case 'boolean':
+                lex();
+                return markerApply(marker, delegate.createBooleanTypeAnnotation());
+            case 'number':
+                lex();
+                return markerApply(marker, delegate.createNumberTypeAnnotation());
+            case 'string':
+                lex();
+                return markerApply(marker, delegate.createStringTypeAnnotation());
+            }
+            return markerApply(marker, parseGenericType());
+        case Token.Punctuator:
+            switch (lookahead.value) {
+            case '{':
+                return markerApply(marker, parseObjectType());
+            case '[':
+                return parseTupleType();
+            case '<':
+                typeParameters = parseTypeParameterDeclaration();
+                expect('(');
+                tmp = parseFunctionTypeParams();
+                params = tmp.params;
+                rest = tmp.rest;
+                expect(')');
+
+                expect('=>');
+
+                returnType = parseType();
+
+                return markerApply(marker, delegate.createFunctionTypeAnnotation(
+                    params,
+                    returnType,
+                    rest,
+                    typeParameters
+                ));
+            case '(':
+                lex();
+                // Check to see if this is actually a grouped type
+                if (!match(')') && !match('...')) {
+                    if (lookahead.type === Token.Identifier) {
+                        token = lookahead2();
+                        isGroupedType = token.value !== '?' && token.value !== ':';
+                    } else {
+                        isGroupedType = true;
+                    }
+                }
+
+                if (isGroupedType) {
+                    type = parseType();
+                    expect(')');
+
+                    // If we see a => next then someone was probably confused about
+                    // function types, so we can provide a better error message
+                    if (match('=>')) {
+                        throwError({}, Messages.ConfusedAboutFunctionType);
+                    }
+
+                    return type;
+                }
+
+                tmp = parseFunctionTypeParams();
+                params = tmp.params;
+                rest = tmp.rest;
+
+                expect(')');
+
+                expect('=>');
+
+                returnType = parseType();
+
+                return markerApply(marker, delegate.createFunctionTypeAnnotation(
+                    params,
+                    returnType,
+                    rest,
+                    null /* typeParameters */
+                ));
+            }
+            break;
+        case Token.Keyword:
+            switch (lookahead.value) {
+            case 'void':
+                return markerApply(marker, parseVoidType());
+            case 'typeof':
+                return markerApply(marker, parseTypeofType());
+            }
+            break;
+        case Token.StringLiteral:
+            token = lex();
+            if (token.octal) {
+                throwError(token, Messages.StrictOctalLiteral);
+            }
+            return markerApply(marker, delegate.createStringLiteralTypeAnnotation(
+                token
+            ));
+        }
+
+        throwUnexpected(lookahead);
+    }
+
+    function parsePostfixType() {
+        var marker = markerCreate(), t = parsePrimaryType();
+        if (match('[')) {
+            expect('[');
+            expect(']');
+            return markerApply(marker, delegate.createArrayTypeAnnotation(t));
+        }
+        return t;
+    }
+
+    function parsePrefixType() {
+        var marker = markerCreate();
+        if (match('?')) {
+            lex();
+            return markerApply(marker, delegate.createNullableTypeAnnotation(
+                parsePrefixType()
+            ));
+        }
+        return parsePostfixType();
+    }
+
+
+    function parseIntersectionType() {
+        var marker = markerCreate(), type, types;
+        type = parsePrefixType();
+        types = [type];
+        while (match('&')) {
+            lex();
+            types.push(parsePrefixType());
+        }
+
+        return types.length === 1 ?
+                type :
+                markerApply(marker, delegate.createIntersectionTypeAnnotation(
+                    types
+                ));
+    }
+
+    function parseUnionType() {
+        var marker = markerCreate(), type, types;
+        type = parseIntersectionType();
+        types = [type];
+        while (match('|')) {
+            lex();
+            types.push(parseIntersectionType());
+        }
+        return types.length === 1 ?
+                type :
+                markerApply(marker, delegate.createUnionTypeAnnotation(
+                    types
+                ));
+    }
+
+    function parseType() {
+        var oldInType = state.inType, type;
+        state.inType = true;
+
+        type = parseUnionType();
+
+        state.inType = oldInType;
+        return type;
+    }
+
+    function parseTypeAnnotation() {
+        var marker = markerCreate(), type;
+
+        expect(':');
+        type = parseType();
+
+        return markerApply(marker, delegate.createTypeAnnotation(type));
+    }
+
+    function parseVariableIdentifier() {
+        var marker = markerCreate(),
+            token = lex();
+
+        if (token.type !== Token.Identifier) {
+            throwUnexpected(token);
+        }
+
+        return markerApply(marker, delegate.createIdentifier(token.value));
+    }
+
+    function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
+        var marker = markerCreate(),
+            ident = parseVariableIdentifier(),
+            isOptionalParam = false;
+
+        if (canBeOptionalParam && match('?')) {
+            expect('?');
+            isOptionalParam = true;
+        }
+
+        if (requireTypeAnnotation || match(':')) {
+            ident.typeAnnotation = parseTypeAnnotation();
+            ident = markerApply(marker, ident);
+        }
+
+        if (isOptionalParam) {
+            ident.optional = true;
+            ident = markerApply(marker, ident);
+        }
+
+        return ident;
+    }
+
+    function parseVariableDeclaration(kind) {
+        var id,
+            marker = markerCreate(),
+            init = null,
+            typeAnnotationMarker = markerCreate();
+        if (match('{')) {
+            id = parseObjectInitialiser();
+            reinterpretAsAssignmentBindingPattern(id);
+            if (match(':')) {
+                id.typeAnnotation = parseTypeAnnotation();
+                markerApply(typeAnnotationMarker, id);
+            }
+        } else if (match('[')) {
+            id = parseArrayInitialiser();
+            reinterpretAsAssignmentBindingPattern(id);
+            if (match(':')) {
+                id.typeAnnotation = parseTypeAnnotation();
+                markerApply(typeAnnotationMarker, id);
+            }
+        } else {
+            /* istanbul ignore next */
+            id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
+            // 12.2.1
+            if (strict && isRestrictedWord(id.name)) {
+                throwErrorTolerant({}, Messages.StrictVarName);
+            }
+        }
+
+        if (kind === 'const') {
+            if (!match('=')) {
+                throwError({}, Messages.NoUninitializedConst);
+            }
+            expect('=');
+            init = parseAssignmentExpression();
+        } else if (match('=')) {
+            lex();
+            init = parseAssignmentExpression();
+        }
+
+        return markerApply(marker, delegate.createVariableDeclarator(id, init));
+    }
+
+    function parseVariableDeclarationList(kind) {
+        var list = [];
+
+        do {
+            list.push(parseVariableDeclaration(kind));
+            if (!match(',')) {
+                break;
+            }
+            lex();
+        } while (index < length);
+
+        return list;
+    }
+
+    function parseVariableStatement() {
+        var declarations, marker = markerCreate();
+
+        expectKeyword('var');
+
+        declarations = parseVariableDeclarationList();
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
+    }
+
+    // kind may be `const` or `let`
+    // Both are experimental and not in the specification yet.
+    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
+    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
+    function parseConstLetDeclaration(kind) {
+        var declarations, marker = markerCreate();
+
+        expectKeyword(kind);
+
+        declarations = parseVariableDeclarationList(kind);
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
+    }
+
+    // people.mozilla.org/~jorendorff/es6-draft.html
+
+    function parseModuleSpecifier() {
+        var marker = markerCreate(),
+            specifier;
+
+        if (lookahead.type !== Token.StringLiteral) {
+            throwError({}, Messages.InvalidModuleSpecifier);
+        }
+        specifier = delegate.createModuleSpecifier(lookahead);
+        lex();
+        return markerApply(marker, specifier);
+    }
+
+    function parseExportBatchSpecifier() {
+        var marker = markerCreate();
+        expect('*');
+        return markerApply(marker, delegate.createExportBatchSpecifier());
+    }
+
+    function parseExportSpecifier() {
+        var id, name = null, marker = markerCreate(), from;
+        if (matchKeyword('default')) {
+            lex();
+            id = markerApply(marker, delegate.createIdentifier('default'));
+            // export {default} from "something";
+        } else {
+            id = parseVariableIdentifier();
+        }
+        if (matchContextualKeyword('as')) {
+            lex();
+            name = parseNonComputedProperty();
+        }
+
+        return markerApply(marker, delegate.createExportSpecifier(id, name));
+    }
+
+    function parseExportDeclaration() {
+        var declaration = null,
+            possibleIdentifierToken, sourceElement,
+            isExportFromIdentifier,
+            src = null, specifiers = [],
+            marker = markerCreate();
+
+        expectKeyword('export');
+
+        if (matchKeyword('default')) {
+            // covers:
+            // export default ...
+            lex();
+            if (matchKeyword('function') || matchKeyword('class')) {
+                possibleIdentifierToken = lookahead2();
+                if (isIdentifierName(possibleIdentifierToken)) {
+                    // covers:
+                    // export default function foo () {}
+                    // export default class foo {}
+                    sourceElement = parseSourceElement();
+                    return markerApply(marker, delegate.createExportDeclaration(true, sourceElement, [sourceElement.id], null));
+                }
+                // covers:
+                // export default function () {}
+                // export default class {}
+                switch (lookahead.value) {
+                case 'class':
+                    return markerApply(marker, delegate.createExportDeclaration(true, parseClassExpression(), [], null));
+                case 'function':
+                    return markerApply(marker, delegate.createExportDeclaration(true, parseFunctionExpression(), [], null));
+                }
+            }
+
+            if (matchContextualKeyword('from')) {
+                throwError({}, Messages.UnexpectedToken, lookahead.value);
+            }
+
+            // covers:
+            // export default {};
+            // export default [];
+            if (match('{')) {
+                declaration = parseObjectInitialiser();
+            } else if (match('[')) {
+                declaration = parseArrayInitialiser();
+            } else {
+                declaration = parseAssignmentExpression();
+            }
+            consumeSemicolon();
+            return markerApply(marker, delegate.createExportDeclaration(true, declaration, [], null));
+        }
+
+        // non-default export
+        if (lookahead.type === Token.Keyword || matchContextualKeyword('type')) {
+            // covers:
+            // export var f = 1;
+            switch (lookahead.value) {
+            case 'type':
+            case 'let':
+            case 'const':
+            case 'var':
+            case 'class':
+            case 'function':
+                return markerApply(marker, delegate.createExportDeclaration(false, parseSourceElement(), specifiers, null));
+            }
+        }
+
+        if (match('*')) {
+            // covers:
+            // export * from "foo";
+            specifiers.push(parseExportBatchSpecifier());
+
+            if (!matchContextualKeyword('from')) {
+                throwError({}, lookahead.value ?
+                        Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
+            }
+            lex();
+            src = parseModuleSpecifier();
+            consumeSemicolon();
+
+            return markerApply(marker, delegate.createExportDeclaration(false, null, specifiers, src));
+        }
+
+        expect('{');
+        if (!match('}')) {
+            do {
+                isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
+                specifiers.push(parseExportSpecifier());
+            } while (match(',') && lex());
+        }
+        expect('}');
+
+        if (matchContextualKeyword('from')) {
+            // covering:
+            // export {default} from "foo";
+            // export {foo} from "foo";
+            lex();
+            src = parseModuleSpecifier();
+            consumeSemicolon();
+        } else if (isExportFromIdentifier) {
+            // covering:
+            // export {default}; // missing fromClause
+            throwError({}, lookahead.value ?
+                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
+        } else {
+            // cover
+            // export {foo};
+            consumeSemicolon();
+        }
+        return markerApply(marker, delegate.createExportDeclaration(false, declaration, specifiers, src));
+    }
+
+
+    function parseImportSpecifier() {
+        // import {<foo as bar>} ...;
+        var id, name = null, marker = markerCreate();
+
+        id = parseNonComputedProperty();
+        if (matchContextualKeyword('as')) {
+            lex();
+            name = parseVariableIdentifier();
+        }
+
+        return markerApply(marker, delegate.createImportSpecifier(id, name));
+    }
+
+    function parseNamedImports() {
+        var specifiers = [];
+        // {foo, bar as bas}
+        expect('{');
+        if (!match('}')) {
+            do {
+                specifiers.push(parseImportSpecifier());
+            } while (match(',') && lex());
+        }
+        expect('}');
+        return specifiers;
+    }
+
+    function parseImportDefaultSpecifier() {
+        // import <foo> ...;
+        var id, marker = markerCreate();
+
+        id = parseNonComputedProperty();
+
+        return markerApply(marker, delegate.createImportDefaultSpecifier(id));
+    }
+
+    function parseImportNamespaceSpecifier() {
+        // import <* as foo> ...;
+        var id, marker = markerCreate();
+
+        expect('*');
+        if (!matchContextualKeyword('as')) {
+            throwError({}, Messages.NoAsAfterImportNamespace);
+        }
+        lex();
+        id = parseNonComputedProperty();
+
+        return markerApply(marker, delegate.createImportNamespaceSpecifier(id));
+    }
+
+    function parseImportDeclaration() {
+        var specifiers, src, marker = markerCreate(), isType = false, token2;
+
+        expectKeyword('import');
+
+        if (matchContextualKeyword('type')) {
+            token2 = lookahead2();
+            if ((token2.type === Token.Identifier && token2.value !== 'from') ||
+                    (token2.type === Token.Punctuator &&
+                        (token2.value === '{' || token2.value === '*'))) {
+                isType = true;
+                lex();
+            }
+        }
+
+        specifiers = [];
+
+        if (lookahead.type === Token.StringLiteral) {
+            // covers:
+            // import "foo";
+            src = parseModuleSpecifier();
+            consumeSemicolon();
+            return markerApply(marker, delegate.createImportDeclaration(specifiers, src, isType));
+        }
+
+        if (!matchKeyword('default') && isIdentifierName(lookahead)) {
+            // covers:
+            // import foo
+            // import foo, ...
+            specifiers.push(parseImportDefaultSpecifier());
+            if (match(',')) {
+                lex();
+            }
+        }
+        if (match('*')) {
+            // covers:
+            // import foo, * as foo
+            // import * as foo
+            specifiers.push(parseImportNamespaceSpecifier());
+        } else if (match('{')) {
+            // covers:
+            // import foo, {bar}
+            // import {bar}
+            specifiers = specifiers.concat(parseNamedImports());
+        }
+
+        if (!matchContextualKeyword('from')) {
+            throwError({}, lookahead.value ?
+                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
+        }
+        lex();
+        src = parseModuleSpecifier();
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createImportDeclaration(specifiers, src, isType));
+    }
+
+    // 12.3 Empty Statement
+
+    function parseEmptyStatement() {
+        var marker = markerCreate();
+        expect(';');
+        return markerApply(marker, delegate.createEmptyStatement());
+    }
+
+    // 12.4 Expression Statement
+
+    function parseExpressionStatement() {
+        var marker = markerCreate(), expr = parseExpression();
+        consumeSemicolon();
+        return markerApply(marker, delegate.createExpressionStatement(expr));
+    }
+
+    // 12.5 If statement
+
+    function parseIfStatement() {
+        var test, consequent, alternate, marker = markerCreate();
+
+        expectKeyword('if');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        consequent = parseStatement();
+
+        if (matchKeyword('else')) {
+            lex();
+            alternate = parseStatement();
+        } else {
+            alternate = null;
+        }
+
+        return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
+    }
+
+    // 12.6 Iteration Statements
+
+    function parseDoWhileStatement() {
+        var body, test, oldInIteration, marker = markerCreate();
+
+        expectKeyword('do');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        if (match(';')) {
+            lex();
+        }
+
+        return markerApply(marker, delegate.createDoWhileStatement(body, test));
+    }
+
+    function parseWhileStatement() {
+        var test, body, oldInIteration, marker = markerCreate();
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        return markerApply(marker, delegate.createWhileStatement(test, body));
+    }
+
+    function parseForVariableDeclaration() {
+        var marker = markerCreate(),
+            token = lex(),
+            declarations = parseVariableDeclarationList();
+
+        return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
+    }
+
+    function parseForStatement(opts) {
+        var init, test, update, left, right, body, operator, oldInIteration,
+            marker = markerCreate();
+        init = test = update = null;
+        expectKeyword('for');
+
+        // http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators&s=each
+        if (matchContextualKeyword('each')) {
+            throwError({}, Messages.EachNotAllowed);
+        }
+
+        expect('(');
+
+        if (match(';')) {
+            lex();
+        } else {
+            if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
+                state.allowIn = false;
+                init = parseForVariableDeclaration();
+                state.allowIn = true;
+
+                if (init.declarations.length === 1) {
+                    if (matchKeyword('in') || matchContextualKeyword('of')) {
+                        operator = lookahead;
+                        if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
+                            lex();
+                            left = init;
+                            right = parseExpression();
+                            init = null;
+                        }
+                    }
+                }
+            } else {
+                state.allowIn = false;
+                init = parseExpression();
+                state.allowIn = true;
+
+                if (matchContextualKeyword('of')) {
+                    operator = lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                } else if (matchKeyword('in')) {
+                    // LeftHandSideExpression
+                    if (!isAssignableLeftHandSide(init)) {
+                        throwError({}, Messages.InvalidLHSInForIn);
+                    }
+                    operator = lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            }
+
+            if (typeof left === 'undefined') {
+                expect(';');
+            }
+        }
+
+        if (typeof left === 'undefined') {
+
+            if (!match(';')) {
+                test = parseExpression();
+            }
+            expect(';');
+
+            if (!match(')')) {
+                update = parseExpression();
+            }
+        }
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        if (!(opts !== undefined && opts.ignoreBody)) {
+            body = parseStatement();
+        }
+
+        state.inIteration = oldInIteration;
+
+        if (typeof left === 'undefined') {
+            return markerApply(marker, delegate.createForStatement(init, test, update, body));
+        }
+
+        if (operator.value === 'in') {
+            return markerApply(marker, delegate.createForInStatement(left, right, body));
+        }
+        return markerApply(marker, delegate.createForOfStatement(left, right, body));
+    }
+
+    // 12.7 The continue statement
+
+    function parseContinueStatement() {
+        var label = null, marker = markerCreate();
+
+        expectKeyword('continue');
+
+        // Optimize the most common form: 'continue;'.
+        if (source.charCodeAt(index) === 59) {
+            lex();
+
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return markerApply(marker, delegate.createContinueStatement(null));
+        }
+
+        if (peekLineTerminator()) {
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return markerApply(marker, delegate.createContinueStatement(null));
+        }
+
+        if (lookahead.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            if (!state.labelSet.has(label.name)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !state.inIteration) {
+            throwError({}, Messages.IllegalContinue);
+        }
+
+        return markerApply(marker, delegate.createContinueStatement(label));
+    }
+
+    // 12.8 The break statement
+
+    function parseBreakStatement() {
+        var label = null, marker = markerCreate();
+
+        expectKeyword('break');
+
+        // Catch the very common case first: immediately a semicolon (char #59).
+        if (source.charCodeAt(index) === 59) {
+            lex();
+
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return markerApply(marker, delegate.createBreakStatement(null));
+        }
+
+        if (peekLineTerminator()) {
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return markerApply(marker, delegate.createBreakStatement(null));
+        }
+
+        if (lookahead.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            if (!state.labelSet.has(label.name)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !(state.inIteration || state.inSwitch)) {
+            throwError({}, Messages.IllegalBreak);
+        }
+
+        return markerApply(marker, delegate.createBreakStatement(label));
+    }
+
+    // 12.9 The return statement
+
+    function parseReturnStatement() {
+        var argument = null, marker = markerCreate();
+
+        expectKeyword('return');
+
+        if (!state.inFunctionBody) {
+            throwErrorTolerant({}, Messages.IllegalReturn);
+        }
+
+        // 'return' followed by a space and an identifier is very common.
+        if (source.charCodeAt(index) === 32) {
+            if (isIdentifierStart(source.charCodeAt(index + 1))) {
+                argument = parseExpression();
+                consumeSemicolon();
+                return markerApply(marker, delegate.createReturnStatement(argument));
+            }
+        }
+
+        if (peekLineTerminator()) {
+            return markerApply(marker, delegate.createReturnStatement(null));
+        }
+
+        if (!match(';')) {
+            if (!match('}') && lookahead.type !== Token.EOF) {
+                argument = parseExpression();
+            }
+        }
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createReturnStatement(argument));
+    }
+
+    // 12.10 The with statement
+
+    function parseWithStatement() {
+        var object, body, marker = markerCreate();
+
+        if (strict) {
+            throwErrorTolerant({}, Messages.StrictModeWith);
+        }
+
+        expectKeyword('with');
+
+        expect('(');
+
+        object = parseExpression();
+
+        expect(')');
+
+        body = parseStatement();
+
+        return markerApply(marker, delegate.createWithStatement(object, body));
+    }
+
+    // 12.10 The swith statement
+
+    function parseSwitchCase() {
+        var test,
+            consequent = [],
+            sourceElement,
+            marker = markerCreate();
+
+        if (matchKeyword('default')) {
+            lex();
+            test = null;
+        } else {
+            expectKeyword('case');
+            test = parseExpression();
+        }
+        expect(':');
+
+        while (index < length) {
+            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
+                break;
+            }
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            consequent.push(sourceElement);
+        }
+
+        return markerApply(marker, delegate.createSwitchCase(test, consequent));
+    }
+
+    function parseSwitchStatement() {
+        var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();
+
+        expectKeyword('switch');
+
+        expect('(');
+
+        discriminant = parseExpression();
+
+        expect(')');
+
+        expect('{');
+
+        cases = [];
+
+        if (match('}')) {
+            lex();
+            return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
+        }
+
+        oldInSwitch = state.inSwitch;
+        state.inSwitch = true;
+        defaultFound = false;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            clause = parseSwitchCase();
+            if (clause.test === null) {
+                if (defaultFound) {
+                    throwError({}, Messages.MultipleDefaultsInSwitch);
+                }
+                defaultFound = true;
+            }
+            cases.push(clause);
+        }
+
+        state.inSwitch = oldInSwitch;
+
+        expect('}');
+
+        return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
+    }
+
+    // 12.13 The throw statement
+
+    function parseThrowStatement() {
+        var argument, marker = markerCreate();
+
+        expectKeyword('throw');
+
+        if (peekLineTerminator()) {
+            throwError({}, Messages.NewlineAfterThrow);
+        }
+
+        argument = parseExpression();
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createThrowStatement(argument));
+    }
+
+    // 12.14 The try statement
+
+    function parseCatchClause() {
+        var param, body, marker = markerCreate();
+
+        expectKeyword('catch');
+
+        expect('(');
+        if (match(')')) {
+            throwUnexpected(lookahead);
+        }
+
+        param = parseExpression();
+        // 12.14.1
+        if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
+            throwErrorTolerant({}, Messages.StrictCatchVariable);
+        }
+
+        expect(')');
+        body = parseBlock();
+        return markerApply(marker, delegate.createCatchClause(param, body));
+    }
+
+    function parseTryStatement() {
+        var block, handlers = [], finalizer = null, marker = markerCreate();
+
+        expectKeyword('try');
+
+        block = parseBlock();
+
+        if (matchKeyword('catch')) {
+            handlers.push(parseCatchClause());
+        }
+
+        if (matchKeyword('finally')) {
+            lex();
+            finalizer = parseBlock();
+        }
+
+        if (handlers.length === 0 && !finalizer) {
+            throwError({}, Messages.NoCatchOrFinally);
+        }
+
+        return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
+    }
+
+    // 12.15 The debugger statement
+
+    function parseDebuggerStatement() {
+        var marker = markerCreate();
+        expectKeyword('debugger');
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createDebuggerStatement());
+    }
+
+    // 12 Statements
+
+    function parseStatement() {
+        var type = lookahead.type,
+            marker,
+            expr,
+            labeledBody;
+
+        if (type === Token.EOF) {
+            throwUnexpected(lookahead);
+        }
+
+        if (type === Token.Punctuator) {
+            switch (lookahead.value) {
+            case ';':
+                return parseEmptyStatement();
+            case '{':
+                return parseBlock();
+            case '(':
+                return parseExpressionStatement();
+            default:
+                break;
+            }
+        }
+
+        if (type === Token.Keyword) {
+            switch (lookahead.value) {
+            case 'break':
+                return parseBreakStatement();
+            case 'continue':
+                return parseContinueStatement();
+            case 'debugger':
+                return parseDebuggerStatement();
+            case 'do':
+                return parseDoWhileStatement();
+            case 'for':
+                return parseForStatement();
+            case 'function':
+                return parseFunctionDeclaration();
+            case 'class':
+                return parseClassDeclaration();
+            case 'if':
+                return parseIfStatement();
+            case 'return':
+                return parseReturnStatement();
+            case 'switch':
+                return parseSwitchStatement();
+            case 'throw':
+                return parseThrowStatement();
+            case 'try':
+                return parseTryStatement();
+            case 'var':
+                return parseVariableStatement();
+            case 'while':
+                return parseWhileStatement();
+            case 'with':
+                return parseWithStatement();
+            default:
+                break;
+            }
+        }
+
+        if (matchAsyncFuncExprOrDecl()) {
+            return parseFunctionDeclaration();
+        }
+
+        marker = markerCreate();
+        expr = parseExpression();
+
+        // 12.12 Labelled Statements
+        if ((expr.type === Syntax.Identifier) && match(':')) {
+            lex();
+
+            if (state.labelSet.has(expr.name)) {
+                throwError({}, Messages.Redeclaration, 'Label', expr.name);
+            }
+
+            state.labelSet.set(expr.name, true);
+            labeledBody = parseStatement();
+            state.labelSet["delete"](expr.name);
+            return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
+        }
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createExpressionStatement(expr));
+    }
+
+    // 13 Function Definition
+
+    function parseConciseBody() {
+        if (match('{')) {
+            return parseFunctionSourceElements();
+        }
+        return parseAssignmentExpression();
+    }
+
+    function parseFunctionSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted,
+            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
+            marker = markerCreate();
+
+        expect('{');
+
+        while (index < length) {
+            if (lookahead.type !== Token.StringLiteral) {
+                break;
+            }
+            token = lookahead;
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        oldLabelSet = state.labelSet;
+        oldInIteration = state.inIteration;
+        oldInSwitch = state.inSwitch;
+        oldInFunctionBody = state.inFunctionBody;
+        oldParenthesizedCount = state.parenthesizedCount;
+
+        state.labelSet = new StringMap();
+        state.inIteration = false;
+        state.inSwitch = false;
+        state.inFunctionBody = true;
+        state.parenthesizedCount = 0;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+
+        expect('}');
+
+        state.labelSet = oldLabelSet;
+        state.inIteration = oldInIteration;
+        state.inSwitch = oldInSwitch;
+        state.inFunctionBody = oldInFunctionBody;
+        state.parenthesizedCount = oldParenthesizedCount;
+
+        return markerApply(marker, delegate.createBlockStatement(sourceElements));
+    }
+
+    function validateParam(options, param, name) {
+        if (strict) {
+            if (isRestrictedWord(name)) {
+                options.stricted = param;
+                options.message = Messages.StrictParamName;
+            }
+            if (options.paramSet.has(name)) {
+                options.stricted = param;
+                options.message = Messages.StrictParamDupe;
+            }
+        } else if (!options.firstRestricted) {
+            if (isRestrictedWord(name)) {
+                options.firstRestricted = param;
+                options.message = Messages.StrictParamName;
+            } else if (isStrictModeReservedWord(name)) {
+                options.firstRestricted = param;
+                options.message = Messages.StrictReservedWord;
+            } else if (options.paramSet.has(name)) {
+                options.firstRestricted = param;
+                options.message = Messages.StrictParamDupe;
+            }
+        }
+        options.paramSet.set(name, true);
+    }
+
+    function parseParam(options) {
+        var marker, token, rest, param, def;
+
+        token = lookahead;
+        if (token.value === '...') {
+            token = lex();
+            rest = true;
+        }
+
+        if (match('[')) {
+            marker = markerCreate();
+            param = parseArrayInitialiser();
+            reinterpretAsDestructuredParameter(options, param);
+            if (match(':')) {
+                param.typeAnnotation = parseTypeAnnotation();
+                markerApply(marker, param);
+            }
+        } else if (match('{')) {
+            marker = markerCreate();
+            if (rest) {
+                throwError({}, Messages.ObjectPatternAsRestParameter);
+            }
+            param = parseObjectInitialiser();
+            reinterpretAsDestructuredParameter(options, param);
+            if (match(':')) {
+                param.typeAnnotation = parseTypeAnnotation();
+                markerApply(marker, param);
+            }
+        } else {
+            param =
+                rest
+                ? parseTypeAnnotatableIdentifier(
+                    false, /* requireTypeAnnotation */
+                    false /* canBeOptionalParam */
+                )
+                : parseTypeAnnotatableIdentifier(
+                    false, /* requireTypeAnnotation */
+                    true /* canBeOptionalParam */
+                );
+
+            validateParam(options, token, token.value);
+        }
+
+        if (match('=')) {
+            if (rest) {
+                throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
+            }
+            lex();
+            def = parseAssignmentExpression();
+            ++options.defaultCount;
+        }
+
+        if (rest) {
+            if (!match(')')) {
+                throwError({}, Messages.ParameterAfterRestParameter);
+            }
+            options.rest = param;
+            return false;
+        }
+
+        options.params.push(param);
+        options.defaults.push(def);
+        return !match(')');
+    }
+
+    function parseParams(firstRestricted) {
+        var options, marker = markerCreate();
+
+        options = {
+            params: [],
+            defaultCount: 0,
+            defaults: [],
+            rest: null,
+            firstRestricted: firstRestricted
+        };
+
+        expect('(');
+
+        if (!match(')')) {
+            options.paramSet = new StringMap();
+            while (index < length) {
+                if (!parseParam(options)) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        if (options.defaultCount === 0) {
+            options.defaults = [];
+        }
+
+        if (match(':')) {
+            options.returnType = parseTypeAnnotation();
+        }
+
+        return markerApply(marker, options);
+    }
+
+    function parseFunctionDeclaration() {
+        var id, body, token, tmp, firstRestricted, message, generator, isAsync,
+            previousStrict, previousYieldAllowed, previousAwaitAllowed,
+            marker = markerCreate(), typeParameters;
+
+        isAsync = false;
+        if (matchAsync()) {
+            lex();
+            isAsync = true;
+        }
+
+        expectKeyword('function');
+
+        generator = false;
+        if (match('*')) {
+            lex();
+            generator = true;
+        }
+
+        token = lookahead;
+
+        id = parseVariableIdentifier();
+
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+
+        if (strict) {
+            if (isRestrictedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictFunctionName);
+            }
+        } else {
+            if (isRestrictedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictFunctionName;
+            } else if (isStrictModeReservedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictReservedWord;
+            }
+        }
+
+        tmp = parseParams(firstRestricted);
+        firstRestricted = tmp.firstRestricted;
+        if (tmp.message) {
+            message = tmp.message;
+        }
+
+        previousStrict = strict;
+        previousYieldAllowed = state.yieldAllowed;
+        state.yieldAllowed = generator;
+        previousAwaitAllowed = state.awaitAllowed;
+        state.awaitAllowed = isAsync;
+
+        body = parseFunctionSourceElements();
+
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && tmp.stricted) {
+            throwErrorTolerant(tmp.stricted, message);
+        }
+        strict = previousStrict;
+        state.yieldAllowed = previousYieldAllowed;
+        state.awaitAllowed = previousAwaitAllowed;
+
+        return markerApply(
+            marker,
+            delegate.createFunctionDeclaration(
+                id,
+                tmp.params,
+                tmp.defaults,
+                body,
+                tmp.rest,
+                generator,
+                false,
+                isAsync,
+                tmp.returnType,
+                typeParameters
+            )
+        );
+    }
+
+    function parseFunctionExpression() {
+        var token, id = null, firstRestricted, message, tmp, body, generator, isAsync,
+            previousStrict, previousYieldAllowed, previousAwaitAllowed,
+            marker = markerCreate(), typeParameters;
+
+        isAsync = false;
+        if (matchAsync()) {
+            lex();
+            isAsync = true;
+        }
+
+        expectKeyword('function');
+
+        generator = false;
+
+        if (match('*')) {
+            lex();
+            generator = true;
+        }
+
+        if (!match('(')) {
+            if (!match('<')) {
+                token = lookahead;
+                id = parseVariableIdentifier();
+
+                if (strict) {
+                    if (isRestrictedWord(token.value)) {
+                        throwErrorTolerant(token, Messages.StrictFunctionName);
+                    }
+                } else {
+                    if (isRestrictedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictFunctionName;
+                    } else if (isStrictModeReservedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictReservedWord;
+                    }
+                }
+            }
+
+            if (match('<')) {
+                typeParameters = parseTypeParameterDeclaration();
+            }
+        }
+
+        tmp = parseParams(firstRestricted);
+        firstRestricted = tmp.firstRestricted;
+        if (tmp.message) {
+            message = tmp.message;
+        }
+
+        previousStrict = strict;
+        previousYieldAllowed = state.yieldAllowed;
+        state.yieldAllowed = generator;
+        previousAwaitAllowed = state.awaitAllowed;
+        state.awaitAllowed = isAsync;
+
+        body = parseFunctionSourceElements();
+
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && tmp.stricted) {
+            throwErrorTolerant(tmp.stricted, message);
+        }
+        strict = previousStrict;
+        state.yieldAllowed = previousYieldAllowed;
+        state.awaitAllowed = previousAwaitAllowed;
+
+        return markerApply(
+            marker,
+            delegate.createFunctionExpression(
+                id,
+                tmp.params,
+                tmp.defaults,
+                body,
+                tmp.rest,
+                generator,
+                false,
+                isAsync,
+                tmp.returnType,
+                typeParameters
+            )
+        );
+    }
+
+    function parseYieldExpression() {
+        var delegateFlag, expr, marker = markerCreate();
+
+        expectKeyword('yield', !strict);
+
+        delegateFlag = false;
+        if (match('*')) {
+            lex();
+            delegateFlag = true;
+        }
+
+        expr = parseAssignmentExpression();
+
+        return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
+    }
+
+    function parseAwaitExpression() {
+        var expr, marker = markerCreate();
+        expectContextualKeyword('await');
+        expr = parseAssignmentExpression();
+        return markerApply(marker, delegate.createAwaitExpression(expr));
+    }
+
+    // 14 Functions and classes
+
+    // 14.1 Functions is defined above (13 in ES5)
+    // 14.2 Arrow Functions Definitions is defined in (7.3 assignments)
+
+    // 14.3 Method Definitions
+    // 14.3.7
+    function specialMethod(methodDefinition) {
+        return methodDefinition.kind === 'get' ||
+               methodDefinition.kind === 'set' ||
+               methodDefinition.value.generator;
+    }
+
+    function parseMethodDefinition(key, isStatic, generator, computed) {
+        var token, param, propType,
+            isAsync, typeParameters, tokenValue, returnType;
+
+        propType = isStatic ? ClassPropertyType["static"] : ClassPropertyType.prototype;
+
+        if (generator) {
+            return delegate.createMethodDefinition(
+                propType,
+                '',
+                key,
+                parsePropertyMethodFunction({ generator: true }),
+                computed
+            );
+        }
+
+        tokenValue = key.type === 'Identifier' && key.name;
+
+        if (tokenValue === 'get' && !match('(')) {
+            key = parseObjectPropertyKey();
+
+            expect('(');
+            expect(')');
+            if (match(':')) {
+                returnType = parseTypeAnnotation();
+            }
+            return delegate.createMethodDefinition(
+                propType,
+                'get',
+                key,
+                parsePropertyFunction({ generator: false, returnType: returnType }),
+                computed
+            );
+        }
+        if (tokenValue === 'set' && !match('(')) {
+            key = parseObjectPropertyKey();
+
+            expect('(');
+            token = lookahead;
+            param = [ parseTypeAnnotatableIdentifier() ];
+            expect(')');
+            if (match(':')) {
+                returnType = parseTypeAnnotation();
+            }
+            return delegate.createMethodDefinition(
+                propType,
+                'set',
+                key,
+                parsePropertyFunction({
+                    params: param,
+                    generator: false,
+                    name: token,
+                    returnType: returnType
+                }),
+                computed
+            );
+        }
+
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+
+        isAsync = tokenValue === 'async' && !match('(');
+        if (isAsync) {
+            key = parseObjectPropertyKey();
+        }
+
+        return delegate.createMethodDefinition(
+            propType,
+            '',
+            key,
+            parsePropertyMethodFunction({
+                generator: false,
+                async: isAsync,
+                typeParameters: typeParameters
+            }),
+            computed
+        );
+    }
+
+    function parseClassProperty(key, computed, isStatic) {
+        var typeAnnotation;
+
+        typeAnnotation = parseTypeAnnotation();
+        expect(';');
+
+        return delegate.createClassProperty(
+            key,
+            typeAnnotation,
+            computed,
+            isStatic
+        );
+    }
+
+    function parseClassElement() {
+        var computed = false, generator = false, key, marker = markerCreate(),
+            isStatic = false, possiblyOpenBracketToken;
+        if (match(';')) {
+            lex();
+            return undefined;
+        }
+
+        if (lookahead.value === 'static') {
+            lex();
+            isStatic = true;
+        }
+
+        if (match('*')) {
+            lex();
+            generator = true;
+        }
+
+        possiblyOpenBracketToken = lookahead;
+        if (matchContextualKeyword('get') || matchContextualKeyword('set')) {
+            possiblyOpenBracketToken = lookahead2();
+        }
+
+        if (possiblyOpenBracketToken.type === Token.Punctuator
+                && possiblyOpenBracketToken.value === '[') {
+            computed = true;
+        }
+
+        key = parseObjectPropertyKey();
+
+        if (!generator && lookahead.value === ':') {
+            return markerApply(marker, parseClassProperty(key, computed, isStatic));
+        }
+
+        return markerApply(marker, parseMethodDefinition(
+            key,
+            isStatic,
+            generator,
+            computed
+        ));
+    }
+
+    function parseClassBody() {
+        var classElement, classElements = [], existingProps = {},
+            marker = markerCreate(), propName, propType;
+
+        existingProps[ClassPropertyType["static"]] = new StringMap();
+        existingProps[ClassPropertyType.prototype] = new StringMap();
+
+        expect('{');
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            classElement = parseClassElement(existingProps);
+
+            if (typeof classElement !== 'undefined') {
+                classElements.push(classElement);
+
+                propName = !classElement.computed && getFieldName(classElement.key);
+                if (propName !== false) {
+                    propType = classElement["static"] ?
+                                ClassPropertyType["static"] :
+                                ClassPropertyType.prototype;
+
+                    if (classElement.type === Syntax.MethodDefinition) {
+                        if (propName === 'constructor' && !classElement["static"]) {
+                            if (specialMethod(classElement)) {
+                                throwError(classElement, Messages.IllegalClassConstructorProperty);
+                            }
+                            if (existingProps[ClassPropertyType.prototype].has('constructor')) {
+                                throwError(classElement.key, Messages.IllegalDuplicateClassProperty);
+                            }
+                        }
+                        existingProps[propType].set(propName, true);
+                    }
+                }
+            }
+        }
+
+        expect('}');
+
+        return markerApply(marker, delegate.createClassBody(classElements));
+    }
+
+    function parseClassImplements() {
+        var id, implemented = [], marker, typeParameters;
+        if (strict) {
+            expectKeyword('implements');
+        } else {
+            expectContextualKeyword('implements');
+        }
+        while (index < length) {
+            marker = markerCreate();
+            id = parseVariableIdentifier();
+            if (match('<')) {
+                typeParameters = parseTypeParameterInstantiation();
+            } else {
+                typeParameters = null;
+            }
+            implemented.push(markerApply(marker, delegate.createClassImplements(
+                id,
+                typeParameters
+            )));
+            if (!match(',')) {
+                break;
+            }
+            expect(',');
+        }
+        return implemented;
+    }
+
+    function parseClassExpression() {
+        var id, implemented, previousYieldAllowed, superClass = null,
+            superTypeParameters, marker = markerCreate(), typeParameters,
+            matchImplements;
+
+        expectKeyword('class');
+
+        matchImplements =
+                strict
+                ? matchKeyword('implements')
+                : matchContextualKeyword('implements');
+
+        if (!matchKeyword('extends') && !matchImplements && !match('{')) {
+            id = parseVariableIdentifier();
+        }
+
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+
+        if (matchKeyword('extends')) {
+            expectKeyword('extends');
+            previousYieldAllowed = state.yieldAllowed;
+            state.yieldAllowed = false;
+            superClass = parseLeftHandSideExpressionAllowCall();
+            if (match('<')) {
+                superTypeParameters = parseTypeParameterInstantiation();
+            }
+            state.yieldAllowed = previousYieldAllowed;
+        }
+
+        if (strict ? matchKeyword('implements') : matchContextualKeyword('implements')) {
+            implemented = parseClassImplements();
+        }
+
+        return markerApply(marker, delegate.createClassExpression(
+            id,
+            superClass,
+            parseClassBody(),
+            typeParameters,
+            superTypeParameters,
+            implemented
+        ));
+    }
+
+    function parseClassDeclaration() {
+        var id, implemented, previousYieldAllowed, superClass = null,
+            superTypeParameters, marker = markerCreate(), typeParameters;
+
+        expectKeyword('class');
+
+        id = parseVariableIdentifier();
+
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+
+        if (matchKeyword('extends')) {
+            expectKeyword('extends');
+            previousYieldAllowed = state.yieldAllowed;
+            state.yieldAllowed = false;
+            superClass = parseLeftHandSideExpressionAllowCall();
+            if (match('<')) {
+                superTypeParameters = parseTypeParameterInstantiation();
+            }
+            state.yieldAllowed = previousYieldAllowed;
+        }
+
+        if (strict ? matchKeyword('implements') : matchContextualKeyword('implements')) {
+            implemented = parseClassImplements();
+        }
+
+        return markerApply(marker, delegate.createClassDeclaration(
+            id,
+            superClass,
+            parseClassBody(),
+            typeParameters,
+            superTypeParameters,
+            implemented
+        ));
+    }
+
+    // 15 Program
+
+    function parseSourceElement() {
+        var token;
+        if (lookahead.type === Token.Keyword) {
+            switch (lookahead.value) {
+            case 'const':
+            case 'let':
+                return parseConstLetDeclaration(lookahead.value);
+            case 'function':
+                return parseFunctionDeclaration();
+            case 'export':
+                throwErrorTolerant({}, Messages.IllegalExportDeclaration);
+                return parseExportDeclaration();
+            case 'import':
+                throwErrorTolerant({}, Messages.IllegalImportDeclaration);
+                return parseImportDeclaration();
+            case 'interface':
+                if (lookahead2().type === Token.Identifier) {
+                    return parseInterface();
+                }
+                return parseStatement();
+            default:
+                return parseStatement();
+            }
+        }
+
+        if (matchContextualKeyword('type')
+                && lookahead2().type === Token.Identifier) {
+            return parseTypeAlias();
+        }
+
+        if (matchContextualKeyword('interface')
+                && lookahead2().type === Token.Identifier) {
+            return parseInterface();
+        }
+
+        if (matchContextualKeyword('declare')) {
+            token = lookahead2();
+            if (token.type === Token.Keyword) {
+                switch (token.value) {
+                case 'class':
+                    return parseDeclareClass();
+                case 'function':
+                    return parseDeclareFunction();
+                case 'var':
+                    return parseDeclareVariable();
+                }
+            } else if (token.type === Token.Identifier
+                    && token.value === 'module') {
+                return parseDeclareModule();
+            }
+        }
+
+        if (lookahead.type !== Token.EOF) {
+            return parseStatement();
+        }
+    }
+
+    function parseProgramElement() {
+        var isModule = extra.sourceType === 'module' || extra.sourceType === 'nonStrictModule';
+
+        if (isModule && lookahead.type === Token.Keyword) {
+            switch (lookahead.value) {
+            case 'export':
+                return parseExportDeclaration();
+            case 'import':
+                return parseImportDeclaration();
+            }
+        }
+
+        return parseSourceElement();
+    }
+
+    function parseProgramElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted;
+
+        while (index < length) {
+            token = lookahead;
+            if (token.type !== Token.StringLiteral) {
+                break;
+            }
+
+            sourceElement = parseProgramElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        while (index < length) {
+            sourceElement = parseProgramElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+        return sourceElements;
+    }
+
+    function parseProgram() {
+        var body, marker = markerCreate();
+        strict = extra.sourceType === 'module';
+        peek();
+        body = parseProgramElements();
+        return markerApply(marker, delegate.createProgram(body));
+    }
+
+    // 16 JSX
+
+    XHTMLEntities = {
+        quot: '\u0022',
+        amp: '&',
+        apos: '\u0027',
+        lt: '<',
+        gt: '>',
+        nbsp: '\u00A0',
+        iexcl: '\u00A1',
+        cent: '\u00A2',
+        pound: '\u00A3',
+        curren: '\u00A4',
+        yen: '\u00A5',
+        brvbar: '\u00A6',
+        sect: '\u00A7',
+        uml: '\u00A8',
+        copy: '\u00A9',
+        ordf: '\u00AA',
+        laquo: '\u00AB',
+        not: '\u00AC',
+        shy: '\u00AD',
+        reg: '\u00AE',
+        macr: '\u00AF',
+        deg: '\u00B0',
+        plusmn: '\u00B1',
+        sup2: '\u00B2',
+        sup3: '\u00B3',
+        acute: '\u00B4',
+        micro: '\u00B5',
+        para: '\u00B6',
+        middot: '\u00B7',
+        cedil: '\u00B8',
+        sup1: '\u00B9',
+        ordm: '\u00BA',
+        raquo: '\u00BB',
+        frac14: '\u00BC',
+        frac12: '\u00BD',
+        frac34: '\u00BE',
+        iquest: '\u00BF',
+        Agrave: '\u00C0',
+        Aacute: '\u00C1',
+        Acirc: '\u00C2',
+        Atilde: '\u00C3',
+        Auml: '\u00C4',
+        Aring: '\u00C5',
+        AElig: '\u00C6',
+        Ccedil: '\u00C7',
+        Egrave: '\u00C8',
+        Eacute: '\u00C9',
+        Ecirc: '\u00CA',
+        Euml: '\u00CB',
+        Igrave: '\u00CC',
+        Iacute: '\u00CD',
+        Icirc: '\u00CE',
+        Iuml: '\u00CF',
+        ETH: '\u00D0',
+        Ntilde: '\u00D1',
+        Ograve: '\u00D2',
+        Oacute: '\u00D3',
+        Ocirc: '\u00D4',
+        Otilde: '\u00D5',
+        Ouml: '\u00D6',
+        times: '\u00D7',
+        Oslash: '\u00D8',
+        Ugrave: '\u00D9',
+        Uacute: '\u00DA',
+        Ucirc: '\u00DB',
+        Uuml: '\u00DC',
+        Yacute: '\u00DD',
+        THORN: '\u00DE',
+        szlig: '\u00DF',
+        agrave: '\u00E0',
+        aacute: '\u00E1',
+        acirc: '\u00E2',
+        atilde: '\u00E3',
+        auml: '\u00E4',
+        aring: '\u00E5',
+        aelig: '\u00E6',
+        ccedil: '\u00E7',
+        egrave: '\u00E8',
+        eacute: '\u00E9',
+        ecirc: '\u00EA',
+        euml: '\u00EB',
+        igrave: '\u00EC',
+        iacute: '\u00ED',
+        icirc: '\u00EE',
+        iuml: '\u00EF',
+        eth: '\u00F0',
+        ntilde: '\u00F1',
+        ograve: '\u00F2',
+        oacute: '\u00F3',
+        ocirc: '\u00F4',
+        otilde: '\u00F5',
+        ouml: '\u00F6',
+        divide: '\u00F7',
+        oslash: '\u00F8',
+        ugrave: '\u00F9',
+        uacute: '\u00FA',
+        ucirc: '\u00FB',
+        uuml: '\u00FC',
+        yacute: '\u00FD',
+        thorn: '\u00FE',
+        yuml: '\u00FF',
+        OElig: '\u0152',
+        oelig: '\u0153',
+        Scaron: '\u0160',
+        scaron: '\u0161',
+        Yuml: '\u0178',
+        fnof: '\u0192',
+        circ: '\u02C6',
+        tilde: '\u02DC',
+        Alpha: '\u0391',
+        Beta: '\u0392',
+        Gamma: '\u0393',
+        Delta: '\u0394',
+        Epsilon: '\u0395',
+        Zeta: '\u0396',
+        Eta: '\u0397',
+        Theta: '\u0398',
+        Iota: '\u0399',
+        Kappa: '\u039A',
+        Lambda: '\u039B',
+        Mu: '\u039C',
+        Nu: '\u039D',
+        Xi: '\u039E',
+        Omicron: '\u039F',
+        Pi: '\u03A0',
+        Rho: '\u03A1',
+        Sigma: '\u03A3',
+        Tau: '\u03A4',
+        Upsilon: '\u03A5',
+        Phi: '\u03A6',
+        Chi: '\u03A7',
+        Psi: '\u03A8',
+        Omega: '\u03A9',
+        alpha: '\u03B1',
+        beta: '\u03B2',
+        gamma: '\u03B3',
+        delta: '\u03B4',
+        epsilon: '\u03B5',
+        zeta: '\u03B6',
+        eta: '\u03B7',
+        theta: '\u03B8',
+        iota: '\u03B9',
+        kappa: '\u03BA',
+        lambda: '\u03BB',
+        mu: '\u03BC',
+        nu: '\u03BD',
+        xi: '\u03BE',
+        omicron: '\u03BF',
+        pi: '\u03C0',
+        rho: '\u03C1',
+        sigmaf: '\u03C2',
+        sigma: '\u03C3',
+        tau: '\u03C4',
+        upsilon: '\u03C5',
+        phi: '\u03C6',
+        chi: '\u03C7',
+        psi: '\u03C8',
+        omega: '\u03C9',
+        thetasym: '\u03D1',
+        upsih: '\u03D2',
+        piv: '\u03D6',
+        ensp: '\u2002',
+        emsp: '\u2003',
+        thinsp: '\u2009',
+        zwnj: '\u200C',
+        zwj: '\u200D',
+        lrm: '\u200E',
+        rlm: '\u200F',
+        ndash: '\u2013',
+        mdash: '\u2014',
+        lsquo: '\u2018',
+        rsquo: '\u2019',
+        sbquo: '\u201A',
+        ldquo: '\u201C',
+        rdquo: '\u201D',
+        bdquo: '\u201E',
+        dagger: '\u2020',
+        Dagger: '\u2021',
+        bull: '\u2022',
+        hellip: '\u2026',
+        permil: '\u2030',
+        prime: '\u2032',
+        Prime: '\u2033',
+        lsaquo: '\u2039',
+        rsaquo: '\u203A',
+        oline: '\u203E',
+        frasl: '\u2044',
+        euro: '\u20AC',
+        image: '\u2111',
+        weierp: '\u2118',
+        real: '\u211C',
+        trade: '\u2122',
+        alefsym: '\u2135',
+        larr: '\u2190',
+        uarr: '\u2191',
+        rarr: '\u2192',
+        darr: '\u2193',
+        harr: '\u2194',
+        crarr: '\u21B5',
+        lArr: '\u21D0',
+        uArr: '\u21D1',
+        rArr: '\u21D2',
+        dArr: '\u21D3',
+        hArr: '\u21D4',
+        forall: '\u2200',
+        part: '\u2202',
+        exist: '\u2203',
+        empty: '\u2205',
+        nabla: '\u2207',
+        isin: '\u2208',
+        notin: '\u2209',
+        ni: '\u220B',
+        prod: '\u220F',
+        sum: '\u2211',
+        minus: '\u2212',
+        lowast: '\u2217',
+        radic: '\u221A',
+        prop: '\u221D',
+        infin: '\u221E',
+        ang: '\u2220',
+        and: '\u2227',
+        or: '\u2228',
+        cap: '\u2229',
+        cup: '\u222A',
+        'int': '\u222B',
+        there4: '\u2234',
+        sim: '\u223C',
+        cong: '\u2245',
+        asymp: '\u2248',
+        ne: '\u2260',
+        equiv: '\u2261',
+        le: '\u2264',
+        ge: '\u2265',
+        sub: '\u2282',
+        sup: '\u2283',
+        nsub: '\u2284',
+        sube: '\u2286',
+        supe: '\u2287',
+        oplus: '\u2295',
+        otimes: '\u2297',
+        perp: '\u22A5',
+        sdot: '\u22C5',
+        lceil: '\u2308',
+        rceil: '\u2309',
+        lfloor: '\u230A',
+        rfloor: '\u230B',
+        lang: '\u2329',
+        rang: '\u232A',
+        loz: '\u25CA',
+        spades: '\u2660',
+        clubs: '\u2663',
+        hearts: '\u2665',
+        diams: '\u2666'
+    };
+
+    function getQualifiedJSXName(object) {
+        if (object.type === Syntax.JSXIdentifier) {
+            return object.name;
+        }
+        if (object.type === Syntax.JSXNamespacedName) {
+            return object.namespace.name + ':' + object.name.name;
+        }
+        /* istanbul ignore else */
+        if (object.type === Syntax.JSXMemberExpression) {
+            return (
+                getQualifiedJSXName(object.object) + '.' +
+                getQualifiedJSXName(object.property)
+            );
+        }
+        /* istanbul ignore next */
+        throwUnexpected(object);
+    }
+
+    function isJSXIdentifierStart(ch) {
+        // exclude backslash (\)
+        return (ch !== 92) && isIdentifierStart(ch);
+    }
+
+    function isJSXIdentifierPart(ch) {
+        // exclude backslash (\) and add hyphen (-)
+        return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
+    }
+
+    function scanJSXIdentifier() {
+        var ch, start, value = '';
+
+        start = index;
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (!isJSXIdentifierPart(ch)) {
+                break;
+            }
+            value += source[index++];
+        }
+
+        return {
+            type: Token.JSXIdentifier,
+            value: value,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanJSXEntity() {
+        var ch, str = '', start = index, count = 0, code;
+        ch = source[index];
+        assert(ch === '&', 'Entity must start with an ampersand');
+        index++;
+        while (index < length && count++ < 10) {
+            ch = source[index++];
+            if (ch === ';') {
+                break;
+            }
+            str += ch;
+        }
+
+        // Well-formed entity (ending was found).
+        if (ch === ';') {
+            // Numeric entity.
+            if (str[0] === '#') {
+                if (str[1] === 'x') {
+                    code = +('0' + str.substr(1));
+                } else {
+                    // Removing leading zeros in order to avoid treating as octal in old browsers.
+                    code = +str.substr(1).replace(Regex.LeadingZeros, '');
+                }
+
+                if (!isNaN(code)) {
+                    return String.fromCharCode(code);
+                }
+            /* istanbul ignore else */
+            } else if (XHTMLEntities[str]) {
+                return XHTMLEntities[str];
+            }
+        }
+
+        // Treat non-entity sequences as regular text.
+        index = start + 1;
+        return '&';
+    }
+
+    function scanJSXText(stopChars) {
+        var ch, str = '', start;
+        start = index;
+        while (index < length) {
+            ch = source[index];
+            if (stopChars.indexOf(ch) !== -1) {
+                break;
+            }
+            if (ch === '&') {
+                str += scanJSXEntity();
+            } else {
+                index++;
+                if (ch === '\r' && source[index] === '\n') {
+                    str += ch;
+                    ch = source[index];
+                    index++;
+                }
+                if (isLineTerminator(ch.charCodeAt(0))) {
+                    ++lineNumber;
+                    lineStart = index;
+                }
+                str += ch;
+            }
+        }
+        return {
+            type: Token.JSXText,
+            value: str,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanJSXStringLiteral() {
+        var innerToken, quote, start;
+
+        quote = source[index];
+        assert((quote === '\'' || quote === '"'),
+            'String literal must starts with a quote');
+
+        start = index;
+        ++index;
+
+        innerToken = scanJSXText([quote]);
+
+        if (quote !== source[index]) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        ++index;
+
+        innerToken.range = [start, index];
+
+        return innerToken;
+    }
+
+    /**
+     * Between JSX opening and closing tags (e.g. <foo>HERE</foo>), anything that
+     * is not another JSX tag and is not an expression wrapped by {} is text.
+     */
+    function advanceJSXChild() {
+        var ch = source.charCodeAt(index);
+
+        // '<' 60, '>' 62, '{' 123, '}' 125
+        if (ch !== 60 && ch !== 62 && ch !== 123 && ch !== 125) {
+            return scanJSXText(['<', '>', '{', '}']);
+        }
+
+        return scanPunctuator();
+    }
+
+    function parseJSXIdentifier() {
+        var token, marker = markerCreate();
+
+        if (lookahead.type !== Token.JSXIdentifier) {
+            throwUnexpected(lookahead);
+        }
+
+        token = lex();
+        return markerApply(marker, delegate.createJSXIdentifier(token.value));
+    }
+
+    function parseJSXNamespacedName() {
+        var namespace, name, marker = markerCreate();
+
+        namespace = parseJSXIdentifier();
+        expect(':');
+        name = parseJSXIdentifier();
+
+        return markerApply(marker, delegate.createJSXNamespacedName(namespace, name));
+    }
+
+    function parseJSXMemberExpression() {
+        var marker = markerCreate(),
+            expr = parseJSXIdentifier();
+
+        while (match('.')) {
+            lex();
+            expr = markerApply(marker, delegate.createJSXMemberExpression(expr, parseJSXIdentifier()));
+        }
+
+        return expr;
+    }
+
+    function parseJSXElementName() {
+        if (lookahead2().value === ':') {
+            return parseJSXNamespacedName();
+        }
+        if (lookahead2().value === '.') {
+            return parseJSXMemberExpression();
+        }
+
+        return parseJSXIdentifier();
+    }
+
+    function parseJSXAttributeName() {
+        if (lookahead2().value === ':') {
+            return parseJSXNamespacedName();
+        }
+
+        return parseJSXIdentifier();
+    }
+
+    function parseJSXAttributeValue() {
+        var value, marker;
+        if (match('{')) {
+            value = parseJSXExpressionContainer();
+            if (value.expression.type === Syntax.JSXEmptyExpression) {
+                throwError(
+                    value,
+                    'JSX attributes must only be assigned a non-empty ' +
+                        'expression'
+                );
+            }
+        } else if (match('<')) {
+            value = parseJSXElement();
+        } else if (lookahead.type === Token.JSXText) {
+            marker = markerCreate();
+            value = markerApply(marker, delegate.createLiteral(lex()));
+        } else {
+            throwError({}, Messages.InvalidJSXAttributeValue);
+        }
+        return value;
+    }
+
+    function parseJSXEmptyExpression() {
+        var marker = markerCreatePreserveWhitespace();
+        while (source.charAt(index) !== '}') {
+            index++;
+        }
+        return markerApply(marker, delegate.createJSXEmptyExpression());
+    }
+
+    function parseJSXExpressionContainer() {
+        var expression, origInJSXChild, origInJSXTag, marker = markerCreate();
+
+        origInJSXChild = state.inJSXChild;
+        origInJSXTag = state.inJSXTag;
+        state.inJSXChild = false;
+        state.inJSXTag = false;
+
+        expect('{');
+
+        if (match('}')) {
+            expression = parseJSXEmptyExpression();
+        } else {
+            expression = parseExpression();
+        }
+
+        state.inJSXChild = origInJSXChild;
+        state.inJSXTag = origInJSXTag;
+
+        expect('}');
+
+        return markerApply(marker, delegate.createJSXExpressionContainer(expression));
+    }
+
+    function parseJSXSpreadAttribute() {
+        var expression, origInJSXChild, origInJSXTag, marker = markerCreate();
+
+        origInJSXChild = state.inJSXChild;
+        origInJSXTag = state.inJSXTag;
+        state.inJSXChild = false;
+        state.inJSXTag = false;
+
+        expect('{');
+        expect('...');
+
+        expression = parseAssignmentExpression();
+
+        state.inJSXChild = origInJSXChild;
+        state.inJSXTag = origInJSXTag;
+
+        expect('}');
+
+        return markerApply(marker, delegate.createJSXSpreadAttribute(expression));
+    }
+
+    function parseJSXAttribute() {
+        var name, marker;
+
+        if (match('{')) {
+            return parseJSXSpreadAttribute();
+        }
+
+        marker = markerCreate();
+
+        name = parseJSXAttributeName();
+
+        // HTML empty attribute
+        if (match('=')) {
+            lex();
+            return markerApply(marker, delegate.createJSXAttribute(name, parseJSXAttributeValue()));
+        }
+
+        return markerApply(marker, delegate.createJSXAttribute(name));
+    }
+
+    function parseJSXChild() {
+        var token, marker;
+        if (match('{')) {
+            token = parseJSXExpressionContainer();
+        } else if (lookahead.type === Token.JSXText) {
+            marker = markerCreatePreserveWhitespace();
+            token = markerApply(marker, delegate.createLiteral(lex()));
+        } else if (match('<')) {
+            token = parseJSXElement();
+        } else {
+            throwUnexpected(lookahead);
+        }
+        return token;
+    }
+
+    function parseJSXClosingElement() {
+        var name, origInJSXChild, origInJSXTag, marker = markerCreate();
+        origInJSXChild = state.inJSXChild;
+        origInJSXTag = state.inJSXTag;
+        state.inJSXChild = false;
+        state.inJSXTag = true;
+        expect('<');
+        expect('/');
+        name = parseJSXElementName();
+        // Because advance() (called by lex() called by expect()) expects there
+        // to be a valid token after >, it needs to know whether to look for a
+        // standard JS token or an JSX text node
+        state.inJSXChild = origInJSXChild;
+        state.inJSXTag = origInJSXTag;
+        expect('>');
+        return markerApply(marker, delegate.createJSXClosingElement(name));
+    }
+
+    function parseJSXOpeningElement() {
+        var name, attributes = [], selfClosing = false, origInJSXChild, origInJSXTag, marker = markerCreate();
+
+        origInJSXChild = state.inJSXChild;
+        origInJSXTag = state.inJSXTag;
+        state.inJSXChild = false;
+        state.inJSXTag = true;
+
+        expect('<');
+
+        name = parseJSXElementName();
+
+        while (index < length &&
+                lookahead.value !== '/' &&
+                lookahead.value !== '>') {
+            attributes.push(parseJSXAttribute());
+        }
+
+        state.inJSXTag = origInJSXTag;
+
+        if (lookahead.value === '/') {
+            expect('/');
+            // Because advance() (called by lex() called by expect()) expects
+            // there to be a valid token after >, it needs to know whether to
+            // look for a standard JS token or an JSX text node
+            state.inJSXChild = origInJSXChild;
+            expect('>');
+            selfClosing = true;
+        } else {
+            state.inJSXChild = true;
+            expect('>');
+        }
+        return markerApply(marker, delegate.createJSXOpeningElement(name, attributes, selfClosing));
+    }
+
+    function parseJSXElement() {
+        var openingElement, closingElement = null, children = [], origInJSXChild, origInJSXTag, marker = markerCreate();
+
+        origInJSXChild = state.inJSXChild;
+        origInJSXTag = state.inJSXTag;
+        openingElement = parseJSXOpeningElement();
+
+        if (!openingElement.selfClosing) {
+            while (index < length) {
+                state.inJSXChild = false; // Call lookahead2() with inJSXChild = false because </ should not be considered in the child
+                if (lookahead.value === '<' && lookahead2().value === '/') {
+                    break;
+                }
+                state.inJSXChild = true;
+                children.push(parseJSXChild());
+            }
+            state.inJSXChild = origInJSXChild;
+            state.inJSXTag = origInJSXTag;
+            closingElement = parseJSXClosingElement();
+            if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
+                throwError({}, Messages.ExpectedJSXClosingTag, getQualifiedJSXName(openingElement.name));
+            }
+        }
+
+        // When (erroneously) writing two adjacent tags like
+        //
+        //     var x = <div>one</div><div>two</div>;
+        //
+        // the default error message is a bit incomprehensible. Since it's
+        // rarely (never?) useful to write a less-than sign after an JSX
+        // element, we disallow it here in the parser in order to provide a
+        // better error message. (In the rare case that the less-than operator
+        // was intended, the left tag can be wrapped in parentheses.)
+        if (!origInJSXChild && match('<')) {
+            throwError(lookahead, Messages.AdjacentJSXElements);
+        }
+
+        return markerApply(marker, delegate.createJSXElement(openingElement, closingElement, children));
+    }
+
+    function parseTypeAlias() {
+        var id, marker = markerCreate(), typeParameters = null, right;
+        expectContextualKeyword('type');
+        id = parseVariableIdentifier();
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+        expect('=');
+        right = parseType();
+        consumeSemicolon();
+        return markerApply(marker, delegate.createTypeAlias(id, typeParameters, right));
+    }
+
+    function parseInterfaceExtends() {
+        var marker = markerCreate(), id, typeParameters = null;
+
+        id = parseVariableIdentifier();
+        if (match('<')) {
+            typeParameters = parseTypeParameterInstantiation();
+        }
+
+        return markerApply(marker, delegate.createInterfaceExtends(
+            id,
+            typeParameters
+        ));
+    }
+
+    function parseInterfaceish(marker, allowStatic) {
+        var body, bodyMarker, extended = [], id,
+            typeParameters = null;
+
+        id = parseVariableIdentifier();
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+
+        if (matchKeyword('extends')) {
+            expectKeyword('extends');
+
+            while (index < length) {
+                extended.push(parseInterfaceExtends());
+                if (!match(',')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        bodyMarker = markerCreate();
+        body = markerApply(bodyMarker, parseObjectType(allowStatic));
+
+        return markerApply(marker, delegate.createInterface(
+            id,
+            typeParameters,
+            body,
+            extended
+        ));
+    }
+
+    function parseInterface() {
+        var marker = markerCreate();
+
+        if (strict) {
+            expectKeyword('interface');
+        } else {
+            expectContextualKeyword('interface');
+        }
+
+        return parseInterfaceish(marker, /* allowStatic */false);
+    }
+
+    function parseDeclareClass() {
+        var marker = markerCreate(), ret;
+        expectContextualKeyword('declare');
+        expectKeyword('class');
+
+        ret = parseInterfaceish(marker, /* allowStatic */true);
+        ret.type = Syntax.DeclareClass;
+        return ret;
+    }
+
+    function parseDeclareFunction() {
+        var id, idMarker,
+            marker = markerCreate(), params, returnType, rest, tmp,
+            typeParameters = null, value, valueMarker;
+
+        expectContextualKeyword('declare');
+        expectKeyword('function');
+        idMarker = markerCreate();
+        id = parseVariableIdentifier();
+
+        valueMarker = markerCreate();
+        if (match('<')) {
+            typeParameters = parseTypeParameterDeclaration();
+        }
+        expect('(');
+        tmp = parseFunctionTypeParams();
+        params = tmp.params;
+        rest = tmp.rest;
+        expect(')');
+
+        expect(':');
+        returnType = parseType();
+
+        value = markerApply(valueMarker, delegate.createFunctionTypeAnnotation(
+            params,
+            returnType,
+            rest,
+            typeParameters
+        ));
+
+        id.typeAnnotation = markerApply(valueMarker, delegate.createTypeAnnotation(
+            value
+        ));
+        markerApply(idMarker, id);
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createDeclareFunction(
+            id
+        ));
+    }
+
+    function parseDeclareVariable() {
+        var id, marker = markerCreate();
+        expectContextualKeyword('declare');
+        expectKeyword('var');
+        id = parseTypeAnnotatableIdentifier();
+
+        consumeSemicolon();
+
+        return markerApply(marker, delegate.createDeclareVariable(
+            id
+        ));
+    }
+
+    function parseDeclareModule() {
+        var body = [], bodyMarker, id, idMarker, marker = markerCreate(), token;
+        expectContextualKeyword('declare');
+        expectContextualKeyword('module');
+
+        if (lookahead.type === Token.StringLiteral) {
+            if (strict && lookahead.octal) {
+                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
+            }
+            idMarker = markerCreate();
+            id = markerApply(idMarker, delegate.createLiteral(lex()));
+        } else {
+            id = parseVariableIdentifier();
+        }
+
+        bodyMarker = markerCreate();
+        expect('{');
+        while (index < length && !match('}')) {
+            token = lookahead2();
+            switch (token.value) {
+            case 'class':
+                body.push(parseDeclareClass());
+                break;
+            case 'function':
+                body.push(parseDeclareFunction());
+                break;
+            case 'var':
+                body.push(parseDeclareVariable());
+                break;
+            default:
+                throwUnexpected(lookahead);
+            }
+        }
+        expect('}');
+
+        return markerApply(marker, delegate.createDeclareModule(
+            id,
+            markerApply(bodyMarker, delegate.createBlockStatement(body))
+        ));
+    }
+
+    function collectToken() {
+        var loc, token, range, value, entry;
+
+        /* istanbul ignore else */
+        if (!state.inJSXChild) {
+            skipComment();
+        }
+
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        token = extra.advance();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        if (token.type !== Token.EOF) {
+            range = [token.range[0], token.range[1]];
+            value = source.slice(token.range[0], token.range[1]);
+            entry = {
+                type: TokenName[token.type],
+                value: value,
+                range: range,
+                loc: loc
+            };
+            if (token.regex) {
+                entry.regex = {
+                    pattern: token.regex.pattern,
+                    flags: token.regex.flags
+                };
+            }
+            extra.tokens.push(entry);
+        }
+
+        return token;
+    }
+
+    function collectRegex() {
+        var pos, loc, regex, token;
+
+        skipComment();
+
+        pos = index;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        regex = extra.scanRegExp();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        if (!extra.tokenize) {
+            /* istanbul ignore next */
+            // Pop the previous token, which is likely '/' or '/='
+            if (extra.tokens.length > 0) {
+                token = extra.tokens[extra.tokens.length - 1];
+                if (token.range[0] === pos && token.type === 'Punctuator') {
+                    if (token.value === '/' || token.value === '/=') {
+                        extra.tokens.pop();
+                    }
+                }
+            }
+
+            extra.tokens.push({
+                type: 'RegularExpression',
+                value: regex.literal,
+                regex: regex.regex,
+                range: [pos, index],
+                loc: loc
+            });
+        }
+
+        return regex;
+    }
+
+    function filterTokenLocation() {
+        var i, entry, token, tokens = [];
+
+        for (i = 0; i < extra.tokens.length; ++i) {
+            entry = extra.tokens[i];
+            token = {
+                type: entry.type,
+                value: entry.value
+            };
+            if (entry.regex) {
+                token.regex = {
+                    pattern: entry.regex.pattern,
+                    flags: entry.regex.flags
+                };
+            }
+            if (extra.range) {
+                token.range = entry.range;
+            }
+            if (extra.loc) {
+                token.loc = entry.loc;
+            }
+            tokens.push(token);
+        }
+
+        extra.tokens = tokens;
+    }
+
+    function patch() {
+        if (typeof extra.tokens !== 'undefined') {
+            extra.advance = advance;
+            extra.scanRegExp = scanRegExp;
+
+            advance = collectToken;
+            scanRegExp = collectRegex;
+        }
+    }
+
+    function unpatch() {
+        if (typeof extra.scanRegExp === 'function') {
+            advance = extra.advance;
+            scanRegExp = extra.scanRegExp;
+        }
+    }
+
+    // This is used to modify the delegate.
+
+    function extend(object, properties) {
+        var entry, result = {};
+
+        for (entry in object) {
+            /* istanbul ignore else */
+            if (object.hasOwnProperty(entry)) {
+                result[entry] = object[entry];
+            }
+        }
+
+        for (entry in properties) {
+            /* istanbul ignore else */
+            if (properties.hasOwnProperty(entry)) {
+                result[entry] = properties[entry];
+            }
+        }
+
+        return result;
+    }
+
+    function tokenize(code, options) {
+        var toString,
+            token,
+            tokens;
+
+        toString = String;
+        if (typeof code !== 'string' && !(code instanceof String)) {
+            code = toString(code);
+        }
+
+        delegate = SyntaxTreeDelegate;
+        source = code;
+        index = 0;
+        lineNumber = (source.length > 0) ? 1 : 0;
+        lineStart = 0;
+        length = source.length;
+        lookahead = null;
+        state = {
+            allowKeyword: true,
+            allowIn: true,
+            labelSet: new StringMap(),
+            inFunctionBody: false,
+            inIteration: false,
+            inSwitch: false,
+            lastCommentStart: -1
+        };
+
+        extra = {};
+
+        // Options matching.
+        options = options || {};
+
+        // Of course we collect tokens here.
+        options.tokens = true;
+        extra.tokens = [];
+        extra.tokenize = true;
+        // The following two fields are necessary to compute the Regex tokens.
+        extra.openParenToken = -1;
+        extra.openCurlyToken = -1;
+
+        extra.range = (typeof options.range === 'boolean') && options.range;
+        extra.loc = (typeof options.loc === 'boolean') && options.loc;
+
+        if (typeof options.comment === 'boolean' && options.comment) {
+            extra.comments = [];
+        }
+        if (typeof options.tolerant === 'boolean' && options.tolerant) {
+            extra.errors = [];
+        }
+
+        patch();
+
+        try {
+            peek();
+            if (lookahead.type === Token.EOF) {
+                return extra.tokens;
+            }
+
+            token = lex();
+            while (lookahead.type !== Token.EOF) {
+                try {
+                    token = lex();
+                } catch (lexError) {
+                    token = lookahead;
+                    if (extra.errors) {
+                        extra.errors.push(lexError);
+                        // We have to break on the first error
+                        // to avoid infinite loops.
+                        break;
+                    } else {
+                        throw lexError;
+                    }
+                }
+            }
+
+            filterTokenLocation();
+            tokens = extra.tokens;
+            if (typeof extra.comments !== 'undefined') {
+                tokens.comments = extra.comments;
+            }
+            if (typeof extra.errors !== 'undefined') {
+                tokens.errors = extra.errors;
+            }
+        } catch (e) {
+            throw e;
+        } finally {
+            unpatch();
+            extra = {};
+        }
+        return tokens;
+    }
+
+    function parse(code, options) {
+        var program, toString;
+
+        toString = String;
+        if (typeof code !== 'string' && !(code instanceof String)) {
+            code = toString(code);
+        }
+
+        delegate = SyntaxTreeDelegate;
+        source = code;
+        index = 0;
+        lineNumber = (source.length > 0) ? 1 : 0;
+        lineStart = 0;
+        length = source.length;
+        lookahead = null;
+        state = {
+            allowKeyword: false,
+            allowIn: true,
+            labelSet: new StringMap(),
+            parenthesizedCount: 0,
+            inFunctionBody: false,
+            inIteration: false,
+            inSwitch: false,
+            inJSXChild: false,
+            inJSXTag: false,
+            inType: false,
+            lastCommentStart: -1,
+            yieldAllowed: false,
+            awaitAllowed: false
+        };
+
+        extra = {};
+        if (typeof options !== 'undefined') {
+            extra.range = (typeof options.range === 'boolean') && options.range;
+            extra.loc = (typeof options.loc === 'boolean') && options.loc;
+            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;
+
+            if (extra.loc && options.source !== null && options.source !== undefined) {
+                delegate = extend(delegate, {
+                    'postProcess': function (node) {
+                        node.loc.source = toString(options.source);
+                        return node;
+                    }
+                });
+            }
+
+            extra.sourceType = options.sourceType;
+            if (typeof options.tokens === 'boolean' && options.tokens) {
+                extra.tokens = [];
+            }
+            if (typeof options.comment === 'boolean' && options.comment) {
+                extra.comments = [];
+            }
+            if (typeof options.tolerant === 'boolean' && options.tolerant) {
+                extra.errors = [];
+            }
+            if (extra.attachComment) {
+                extra.range = true;
+                extra.comments = [];
+                extra.bottomRightStack = [];
+                extra.trailingComments = [];
+                extra.leadingComments = [];
+            }
+        }
+
+        patch();
+        try {
+            program = parseProgram();
+            if (typeof extra.comments !== 'undefined') {
+                program.comments = extra.comments;
+            }
+            if (typeof extra.tokens !== 'undefined') {
+                filterTokenLocation();
+                program.tokens = extra.tokens;
+            }
+            if (typeof extra.errors !== 'undefined') {
+                program.errors = extra.errors;
+            }
+        } catch (e) {
+            throw e;
+        } finally {
+            unpatch();
+            extra = {};
+        }
+
+        return program;
+    }
+
+    // Sync with *.json manifests.
+    exports.version = '13001.1001.0-dev-harmony-fb';
+
+    exports.tokenize = tokenize;
+
+    exports.parse = parse;
+
+    // Deep copy.
+   /* istanbul ignore next */
+    exports.Syntax = (function () {
+        var name, types = {};
+
+        if (typeof Object.create === 'function') {
+            types = Object.create(null);
+        }
+
+        for (name in Syntax) {
+            if (Syntax.hasOwnProperty(name)) {
+                types[name] = Syntax[name];
+            }
+        }
+
+        if (typeof Object.freeze === 'function') {
+            Object.freeze(types);
+        }
+
+        return types;
+    }());
+
+}));
+/* vim: set sw=4 ts=4 et tw=80 : */
+
+},{}],10:[function(_dereq_,module,exports){
+var Base62 = (function (my) {
+  my.chars = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]
+
+  my.encode = function(i){
+    if (i === 0) {return '0'}
+    var s = ''
+    while (i > 0) {
+      s = this.chars[i % 62] + s
+      i = Math.floor(i/62)
+    }
+    return s
+  };
+  my.decode = function(a,b,c,d){
+    for (
+      b = c = (
+        a === (/\W|_|^$/.test(a += "") || a)
+      ) - 1;
+      d = a.charCodeAt(c++);
+    )
+    b = b * 62 + d - [, 48, 29, 87][d >> 5];
+    return b
+  };
+
+  return my;
+}({}));
+
+module.exports = Base62
+},{}],11:[function(_dereq_,module,exports){
+/*
+ * Copyright 2009-2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE.txt or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+exports.SourceMapGenerator = _dereq_('./source-map/source-map-generator').SourceMapGenerator;
+exports.SourceMapConsumer = _dereq_('./source-map/source-map-consumer').SourceMapConsumer;
+exports.SourceNode = _dereq_('./source-map/source-node').SourceNode;
+
+},{"./source-map/source-map-consumer":16,"./source-map/source-map-generator":17,"./source-map/source-node":18}],12:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  var util = _dereq_('./util');
+
+  /**
+   * A data structure which is a combination of an array and a set. Adding a new
+   * member is O(1), testing for membership is O(1), and finding the index of an
+   * element is O(1). Removing elements from the set is not supported. Only
+   * strings are supported for membership.
+   */
+  function ArraySet() {
+    this._array = [];
+    this._set = {};
+  }
+
+  /**
+   * Static method for creating ArraySet instances from an existing array.
+   */
+  ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
+    var set = new ArraySet();
+    for (var i = 0, len = aArray.length; i < len; i++) {
+      set.add(aArray[i], aAllowDuplicates);
+    }
+    return set;
+  };
+
+  /**
+   * Add the given string to this set.
+   *
+   * @param String aStr
+   */
+  ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
+    var isDuplicate = this.has(aStr);
+    var idx = this._array.length;
+    if (!isDuplicate || aAllowDuplicates) {
+      this._array.push(aStr);
+    }
+    if (!isDuplicate) {
+      this._set[util.toSetString(aStr)] = idx;
+    }
+  };
+
+  /**
+   * Is the given string a member of this set?
+   *
+   * @param String aStr
+   */
+  ArraySet.prototype.has = function ArraySet_has(aStr) {
+    return Object.prototype.hasOwnProperty.call(this._set,
+                                                util.toSetString(aStr));
+  };
+
+  /**
+   * What is the index of the given string in the array?
+   *
+   * @param String aStr
+   */
+  ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
+    if (this.has(aStr)) {
+      return this._set[util.toSetString(aStr)];
+    }
+    throw new Error('"' + aStr + '" is not in the set.');
+  };
+
+  /**
+   * What is the element at the given index?
+   *
+   * @param Number aIdx
+   */
+  ArraySet.prototype.at = function ArraySet_at(aIdx) {
+    if (aIdx >= 0 && aIdx < this._array.length) {
+      return this._array[aIdx];
+    }
+    throw new Error('No element indexed by ' + aIdx);
+  };
+
+  /**
+   * Returns the array representation of this set (which has the proper indices
+   * indicated by indexOf). Note that this is a copy of the internal array used
+   * for storing the members so that no one can mess with internal state.
+   */
+  ArraySet.prototype.toArray = function ArraySet_toArray() {
+    return this._array.slice();
+  };
+
+  exports.ArraySet = ArraySet;
+
+});
+
+},{"./util":19,"amdefine":20}],13:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ *
+ * Based on the Base 64 VLQ implementation in Closure Compiler:
+ * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
+ *
+ * Copyright 2011 The Closure Compiler Authors. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ *  * Neither the name of Google Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  var base64 = _dereq_('./base64');
+
+  // A single base 64 digit can contain 6 bits of data. For the base 64 variable
+  // length quantities we use in the source map spec, the first bit is the sign,
+  // the next four bits are the actual value, and the 6th bit is the
+  // continuation bit. The continuation bit tells us whether there are more
+  // digits in this value following this digit.
+  //
+  //   Continuation
+  //   |    Sign
+  //   |    |
+  //   V    V
+  //   101011
+
+  var VLQ_BASE_SHIFT = 5;
+
+  // binary: 100000
+  var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+
+  // binary: 011111
+  var VLQ_BASE_MASK = VLQ_BASE - 1;
+
+  // binary: 100000
+  var VLQ_CONTINUATION_BIT = VLQ_BASE;
+
+  /**
+   * Converts from a two-complement value to a value where the sign bit is
+   * is placed in the least significant bit.  For example, as decimals:
+   *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
+   *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
+   */
+  function toVLQSigned(aValue) {
+    return aValue < 0
+      ? ((-aValue) << 1) + 1
+      : (aValue << 1) + 0;
+  }
+
+  /**
+   * Converts to a two-complement value from a value where the sign bit is
+   * is placed in the least significant bit.  For example, as decimals:
+   *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
+   *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
+   */
+  function fromVLQSigned(aValue) {
+    var isNegative = (aValue & 1) === 1;
+    var shifted = aValue >> 1;
+    return isNegative
+      ? -shifted
+      : shifted;
+  }
+
+  /**
+   * Returns the base 64 VLQ encoded value.
+   */
+  exports.encode = function base64VLQ_encode(aValue) {
+    var encoded = "";
+    var digit;
+
+    var vlq = toVLQSigned(aValue);
+
+    do {
+      digit = vlq & VLQ_BASE_MASK;
+      vlq >>>= VLQ_BASE_SHIFT;
+      if (vlq > 0) {
+        // There are still more digits in this value, so we must make sure the
+        // continuation bit is marked.
+        digit |= VLQ_CONTINUATION_BIT;
+      }
+      encoded += base64.encode(digit);
+    } while (vlq > 0);
+
+    return encoded;
+  };
+
+  /**
+   * Decodes the next base 64 VLQ value from the given string and returns the
+   * value and the rest of the string.
+   */
+  exports.decode = function base64VLQ_decode(aStr) {
+    var i = 0;
+    var strLen = aStr.length;
+    var result = 0;
+    var shift = 0;
+    var continuation, digit;
+
+    do {
+      if (i >= strLen) {
+        throw new Error("Expected more digits in base 64 VLQ value.");
+      }
+      digit = base64.decode(aStr.charAt(i++));
+      continuation = !!(digit & VLQ_CONTINUATION_BIT);
+      digit &= VLQ_BASE_MASK;
+      result = result + (digit << shift);
+      shift += VLQ_BASE_SHIFT;
+    } while (continuation);
+
+    return {
+      value: fromVLQSigned(result),
+      rest: aStr.slice(i)
+    };
+  };
+
+});
+
+},{"./base64":14,"amdefine":20}],14:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  var charToIntMap = {};
+  var intToCharMap = {};
+
+  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+    .split('')
+    .forEach(function (ch, index) {
+      charToIntMap[ch] = index;
+      intToCharMap[index] = ch;
+    });
+
+  /**
+   * Encode an integer in the range of 0 to 63 to a single base 64 digit.
+   */
+  exports.encode = function base64_encode(aNumber) {
+    if (aNumber in intToCharMap) {
+      return intToCharMap[aNumber];
+    }
+    throw new TypeError("Must be between 0 and 63: " + aNumber);
+  };
+
+  /**
+   * Decode a single base 64 digit to an integer.
+   */
+  exports.decode = function base64_decode(aChar) {
+    if (aChar in charToIntMap) {
+      return charToIntMap[aChar];
+    }
+    throw new TypeError("Not a valid base 64 digit: " + aChar);
+  };
+
+});
+
+},{"amdefine":20}],15:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  /**
+   * Recursive implementation of binary search.
+   *
+   * @param aLow Indices here and lower do not contain the needle.
+   * @param aHigh Indices here and higher do not contain the needle.
+   * @param aNeedle The element being searched for.
+   * @param aHaystack The non-empty array being searched.
+   * @param aCompare Function which takes two elements and returns -1, 0, or 1.
+   */
+  function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare) {
+    // This function terminates when one of the following is true:
+    //
+    //   1. We find the exact element we are looking for.
+    //
+    //   2. We did not find the exact element, but we can return the next
+    //      closest element that is less than that element.
+    //
+    //   3. We did not find the exact element, and there is no next-closest
+    //      element which is less than the one we are searching for, so we
+    //      return null.
+    var mid = Math.floor((aHigh - aLow) / 2) + aLow;
+    var cmp = aCompare(aNeedle, aHaystack[mid], true);
+    if (cmp === 0) {
+      // Found the element we are looking for.
+      return aHaystack[mid];
+    }
+    else if (cmp > 0) {
+      // aHaystack[mid] is greater than our needle.
+      if (aHigh - mid > 1) {
+        // The element is in the upper half.
+        return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare);
+      }
+      // We did not find an exact match, return the next closest one
+      // (termination case 2).
+      return aHaystack[mid];
+    }
+    else {
+      // aHaystack[mid] is less than our needle.
+      if (mid - aLow > 1) {
+        // The element is in the lower half.
+        return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare);
+      }
+      // The exact needle element was not found in this haystack. Determine if
+      // we are in termination case (2) or (3) and return the appropriate thing.
+      return aLow < 0
+        ? null
+        : aHaystack[aLow];
+    }
+  }
+
+  /**
+   * This is an implementation of binary search which will always try and return
+   * the next lowest value checked if there is no exact hit. This is because
+   * mappings between original and generated line/col pairs are single points,
+   * and there is an implicit region between each of them, so a miss just means
+   * that you aren't on the very start of a region.
+   *
+   * @param aNeedle The element you are looking for.
+   * @param aHaystack The array that is being searched.
+   * @param aCompare A function which takes the needle and an element in the
+   *     array and returns -1, 0, or 1 depending on whether the needle is less
+   *     than, equal to, or greater than the element, respectively.
+   */
+  exports.search = function search(aNeedle, aHaystack, aCompare) {
+    return aHaystack.length > 0
+      ? recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack, aCompare)
+      : null;
+  };
+
+});
+
+},{"amdefine":20}],16:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  var util = _dereq_('./util');
+  var binarySearch = _dereq_('./binary-search');
+  var ArraySet = _dereq_('./array-set').ArraySet;
+  var base64VLQ = _dereq_('./base64-vlq');
+
+  /**
+   * A SourceMapConsumer instance represents a parsed source map which we can
+   * query for information about the original file positions by giving it a file
+   * position in the generated source.
+   *
+   * The only parameter is the raw source map (either as a JSON string, or
+   * already parsed to an object). According to the spec, source maps have the
+   * following attributes:
+   *
+   *   - version: Which version of the source map spec this map is following.
+   *   - sources: An array of URLs to the original source files.
+   *   - names: An array of identifiers which can be referrenced by individual mappings.
+   *   - sourceRoot: Optional. The URL root from which all sources are relative.
+   *   - sourcesContent: Optional. An array of contents of the original source files.
+   *   - mappings: A string of base64 VLQs which contain the actual mappings.
+   *   - file: The generated file this source map is associated with.
+   *
+   * Here is an example source map, taken from the source map spec[0]:
+   *
+   *     {
+   *       version : 3,
+   *       file: "out.js",
+   *       sourceRoot : "",
+   *       sources: ["foo.js", "bar.js"],
+   *       names: ["src", "maps", "are", "fun"],
+   *       mappings: "AA,AB;;ABCDE;"
+   *     }
+   *
+   * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
+   */
+  function SourceMapConsumer(aSourceMap) {
+    var sourceMap = aSourceMap;
+    if (typeof aSourceMap === 'string') {
+      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+    }
+
+    var version = util.getArg(sourceMap, 'version');
+    var sources = util.getArg(sourceMap, 'sources');
+    // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
+    // requires the array) to play nice here.
+    var names = util.getArg(sourceMap, 'names', []);
+    var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
+    var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
+    var mappings = util.getArg(sourceMap, 'mappings');
+    var file = util.getArg(sourceMap, 'file', null);
+
+    // Once again, Sass deviates from the spec and supplies the version as a
+    // string rather than a number, so we use loose equality checking here.
+    if (version != this._version) {
+      throw new Error('Unsupported version: ' + version);
+    }
+
+    // Pass `true` below to allow duplicate names and sources. While source maps
+    // are intended to be compressed and deduplicated, the TypeScript compiler
+    // sometimes generates source maps with duplicates in them. See Github issue
+    // #72 and bugzil.la/889492.
+    this._names = ArraySet.fromArray(names, true);
+    this._sources = ArraySet.fromArray(sources, true);
+
+    this.sourceRoot = sourceRoot;
+    this.sourcesContent = sourcesContent;
+    this._mappings = mappings;
+    this.file = file;
+  }
+
+  /**
+   * Create a SourceMapConsumer from a SourceMapGenerator.
+   *
+   * @param SourceMapGenerator aSourceMap
+   *        The source map that will be consumed.
+   * @returns SourceMapConsumer
+   */
+  SourceMapConsumer.fromSourceMap =
+    function SourceMapConsumer_fromSourceMap(aSourceMap) {
+      var smc = Object.create(SourceMapConsumer.prototype);
+
+      smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
+      smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
+      smc.sourceRoot = aSourceMap._sourceRoot;
+      smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
+                                                              smc.sourceRoot);
+      smc.file = aSourceMap._file;
+
+      smc.__generatedMappings = aSourceMap._mappings.slice()
+        .sort(util.compareByGeneratedPositions);
+      smc.__originalMappings = aSourceMap._mappings.slice()
+        .sort(util.compareByOriginalPositions);
+
+      return smc;
+    };
+
+  /**
+   * The version of the source mapping spec that we are consuming.
+   */
+  SourceMapConsumer.prototype._version = 3;
+
+  /**
+   * The list of original sources.
+   */
+  Object.defineProperty(SourceMapConsumer.prototype, 'sources', {
+    get: function () {
+      return this._sources.toArray().map(function (s) {
+        return this.sourceRoot ? util.join(this.sourceRoot, s) : s;
+      }, this);
+    }
+  });
+
+  // `__generatedMappings` and `__originalMappings` are arrays that hold the
+  // parsed mapping coordinates from the source map's "mappings" attribute. They
+  // are lazily instantiated, accessed via the `_generatedMappings` and
+  // `_originalMappings` getters respectively, and we only parse the mappings
+  // and create these arrays once queried for a source location. We jump through
+  // these hoops because there can be many thousands of mappings, and parsing
+  // them is expensive, so we only want to do it if we must.
+  //
+  // Each object in the arrays is of the form:
+  //
+  //     {
+  //       generatedLine: The line number in the generated code,
+  //       generatedColumn: The column number in the generated code,
+  //       source: The path to the original source file that generated this
+  //               chunk of code,
+  //       originalLine: The line number in the original source that
+  //                     corresponds to this chunk of generated code,
+  //       originalColumn: The column number in the original source that
+  //                       corresponds to this chunk of generated code,
+  //       name: The name of the original symbol which generated this chunk of
+  //             code.
+  //     }
+  //
+  // All properties except for `generatedLine` and `generatedColumn` can be
+  // `null`.
+  //
+  // `_generatedMappings` is ordered by the generated positions.
+  //
+  // `_originalMappings` is ordered by the original positions.
+
+  SourceMapConsumer.prototype.__generatedMappings = null;
+  Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
+    get: function () {
+      if (!this.__generatedMappings) {
+        this.__generatedMappings = [];
+        this.__originalMappings = [];
+        this._parseMappings(this._mappings, this.sourceRoot);
+      }
+
+      return this.__generatedMappings;
+    }
+  });
+
+  SourceMapConsumer.prototype.__originalMappings = null;
+  Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
+    get: function () {
+      if (!this.__originalMappings) {
+        this.__generatedMappings = [];
+        this.__originalMappings = [];
+        this._parseMappings(this._mappings, this.sourceRoot);
+      }
+
+      return this.__originalMappings;
+    }
+  });
+
+  /**
+   * Parse the mappings in a string in to a data structure which we can easily
+   * query (the ordered arrays in the `this.__generatedMappings` and
+   * `this.__originalMappings` properties).
+   */
+  SourceMapConsumer.prototype._parseMappings =
+    function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+      var generatedLine = 1;
+      var previousGeneratedColumn = 0;
+      var previousOriginalLine = 0;
+      var previousOriginalColumn = 0;
+      var previousSource = 0;
+      var previousName = 0;
+      var mappingSeparator = /^[,;]/;
+      var str = aStr;
+      var mapping;
+      var temp;
+
+      while (str.length > 0) {
+        if (str.charAt(0) === ';') {
+          generatedLine++;
+          str = str.slice(1);
+          previousGeneratedColumn = 0;
+        }
+        else if (str.charAt(0) === ',') {
+          str = str.slice(1);
+        }
+        else {
+          mapping = {};
+          mapping.generatedLine = generatedLine;
+
+          // Generated column.
+          temp = base64VLQ.decode(str);
+          mapping.generatedColumn = previousGeneratedColumn + temp.value;
+          previousGeneratedColumn = mapping.generatedColumn;
+          str = temp.rest;
+
+          if (str.length > 0 && !mappingSeparator.test(str.charAt(0))) {
+            // Original source.
+            temp = base64VLQ.decode(str);
+            mapping.source = this._sources.at(previousSource + temp.value);
+            previousSource += temp.value;
+            str = temp.rest;
+            if (str.length === 0 || mappingSeparator.test(str.charAt(0))) {
+              throw new Error('Found a source, but no line and column');
+            }
+
+            // Original line.
+            temp = base64VLQ.decode(str);
+            mapping.originalLine = previousOriginalLine + temp.value;
+            previousOriginalLine = mapping.originalLine;
+            // Lines are stored 0-based
+            mapping.originalLine += 1;
+            str = temp.rest;
+            if (str.length === 0 || mappingSeparator.test(str.charAt(0))) {
+              throw new Error('Found a source and line, but no column');
+            }
+
+            // Original column.
+            temp = base64VLQ.decode(str);
+            mapping.originalColumn = previousOriginalColumn + temp.value;
+            previousOriginalColumn = mapping.originalColumn;
+            str = temp.rest;
+
+            if (str.length > 0 && !mappingSeparator.test(str.charAt(0))) {
+              // Original name.
+              temp = base64VLQ.decode(str);
+              mapping.name = this._names.at(previousName + temp.value);
+              previousName += temp.value;
+              str = temp.rest;
+            }
+          }
+
+          this.__generatedMappings.push(mapping);
+          if (typeof mapping.originalLine === 'number') {
+            this.__originalMappings.push(mapping);
+          }
+        }
+      }
+
+      this.__originalMappings.sort(util.compareByOriginalPositions);
+    };
+
+  /**
+   * Find the mapping that best matches the hypothetical "needle" mapping that
+   * we are searching for in the given "haystack" of mappings.
+   */
+  SourceMapConsumer.prototype._findMapping =
+    function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
+                                           aColumnName, aComparator) {
+      // To return the position we are searching for, we must first find the
+      // mapping for the given position and then return the opposite position it
+      // points to. Because the mappings are sorted, we can use binary search to
+      // find the best mapping.
+
+      if (aNeedle[aLineName] <= 0) {
+        throw new TypeError('Line must be greater than or equal to 1, got '
+                            + aNeedle[aLineName]);
+      }
+      if (aNeedle[aColumnName] < 0) {
+        throw new TypeError('Column must be greater than or equal to 0, got '
+                            + aNeedle[aColumnName]);
+      }
+
+      return binarySearch.search(aNeedle, aMappings, aComparator);
+    };
+
+  /**
+   * Returns the original source, line, and column information for the generated
+   * source's line and column positions provided. The only argument is an object
+   * with the following properties:
+   *
+   *   - line: The line number in the generated source.
+   *   - column: The column number in the generated source.
+   *
+   * and an object is returned with the following properties:
+   *
+   *   - source: The original source file, or null.
+   *   - line: The line number in the original source, or null.
+   *   - column: The column number in the original source, or null.
+   *   - name: The original identifier, or null.
+   */
+  SourceMapConsumer.prototype.originalPositionFor =
+    function SourceMapConsumer_originalPositionFor(aArgs) {
+      var needle = {
+        generatedLine: util.getArg(aArgs, 'line'),
+        generatedColumn: util.getArg(aArgs, 'column')
+      };
+
+      var mapping = this._findMapping(needle,
+                                      this._generatedMappings,
+                                      "generatedLine",
+                                      "generatedColumn",
+                                      util.compareByGeneratedPositions);
+
+      if (mapping) {
+        var source = util.getArg(mapping, 'source', null);
+        if (source && this.sourceRoot) {
+          source = util.join(this.sourceRoot, source);
+        }
+        return {
+          source: source,
+          line: util.getArg(mapping, 'originalLine', null),
+          column: util.getArg(mapping, 'originalColumn', null),
+          name: util.getArg(mapping, 'name', null)
+        };
+      }
+
+      return {
+        source: null,
+        line: null,
+        column: null,
+        name: null
+      };
+    };
+
+  /**
+   * Returns the original source content. The only argument is the url of the
+   * original source file. Returns null if no original source content is
+   * availible.
+   */
+  SourceMapConsumer.prototype.sourceContentFor =
+    function SourceMapConsumer_sourceContentFor(aSource) {
+      if (!this.sourcesContent) {
+        return null;
+      }
+
+      if (this.sourceRoot) {
+        aSource = util.relative(this.sourceRoot, aSource);
+      }
+
+      if (this._sources.has(aSource)) {
+        return this.sourcesContent[this._sources.indexOf(aSource)];
+      }
+
+      var url;
+      if (this.sourceRoot
+          && (url = util.urlParse(this.sourceRoot))) {
+        // XXX: file:// URIs and absolute paths lead to unexpected behavior for
+        // many users. We can help them out when they expect file:// URIs to
+        // behave like it would if they were running a local HTTP server. See
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
+        var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
+        if (url.scheme == "file"
+            && this._sources.has(fileUriAbsPath)) {
+          return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
+        }
+
+        if ((!url.path || url.path == "/")
+            && this._sources.has("/" + aSource)) {
+          return this.sourcesContent[this._sources.indexOf("/" + aSource)];
+        }
+      }
+
+      throw new Error('"' + aSource + '" is not in the SourceMap.');
+    };
+
+  /**
+   * Returns the generated line and column information for the original source,
+   * line, and column positions provided. The only argument is an object with
+   * the following properties:
+   *
+   *   - source: The filename of the original source.
+   *   - line: The line number in the original source.
+   *   - column: The column number in the original source.
+   *
+   * and an object is returned with the following properties:
+   *
+   *   - line: The line number in the generated source, or null.
+   *   - column: The column number in the generated source, or null.
+   */
+  SourceMapConsumer.prototype.generatedPositionFor =
+    function SourceMapConsumer_generatedPositionFor(aArgs) {
+      var needle = {
+        source: util.getArg(aArgs, 'source'),
+        originalLine: util.getArg(aArgs, 'line'),
+        originalColumn: util.getArg(aArgs, 'column')
+      };
+
+      if (this.sourceRoot) {
+        needle.source = util.relative(this.sourceRoot, needle.source);
+      }
+
+      var mapping = this._findMapping(needle,
+                                      this._originalMappings,
+                                      "originalLine",
+                                      "originalColumn",
+                                      util.compareByOriginalPositions);
+
+      if (mapping) {
+        return {
+          line: util.getArg(mapping, 'generatedLine', null),
+          column: util.getArg(mapping, 'generatedColumn', null)
+        };
+      }
+
+      return {
+        line: null,
+        column: null
+      };
+    };
+
+  SourceMapConsumer.GENERATED_ORDER = 1;
+  SourceMapConsumer.ORIGINAL_ORDER = 2;
+
+  /**
+   * Iterate over each mapping between an original source/line/column and a
+   * generated line/column in this source map.
+   *
+   * @param Function aCallback
+   *        The function that is called with each mapping.
+   * @param Object aContext
+   *        Optional. If specified, this object will be the value of `this` every
+   *        time that `aCallback` is called.
+   * @param aOrder
+   *        Either `SourceMapConsumer.GENERATED_ORDER` or
+   *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
+   *        iterate over the mappings sorted by the generated file's line/column
+   *        order or the original's source/line/column order, respectively. Defaults to
+   *        `SourceMapConsumer.GENERATED_ORDER`.
+   */
+  SourceMapConsumer.prototype.eachMapping =
+    function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
+      var context = aContext || null;
+      var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
+
+      var mappings;
+      switch (order) {
+      case SourceMapConsumer.GENERATED_ORDER:
+        mappings = this._generatedMappings;
+        break;
+      case SourceMapConsumer.ORIGINAL_ORDER:
+        mappings = this._originalMappings;
+        break;
+      default:
+        throw new Error("Unknown order of iteration.");
+      }
+
+      var sourceRoot = this.sourceRoot;
+      mappings.map(function (mapping) {
+        var source = mapping.source;
+        if (source && sourceRoot) {
+          source = util.join(sourceRoot, source);
+        }
+        return {
+          source: source,
+          generatedLine: mapping.generatedLine,
+          generatedColumn: mapping.generatedColumn,
+          originalLine: mapping.originalLine,
+          originalColumn: mapping.originalColumn,
+          name: mapping.name
+        };
+      }).forEach(aCallback, context);
+    };
+
+  exports.SourceMapConsumer = SourceMapConsumer;
+
+});
+
+},{"./array-set":12,"./base64-vlq":13,"./binary-search":15,"./util":19,"amdefine":20}],17:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  var base64VLQ = _dereq_('./base64-vlq');
+  var util = _dereq_('./util');
+  var ArraySet = _dereq_('./array-set').ArraySet;
+
+  /**
+   * An instance of the SourceMapGenerator represents a source map which is
+   * being built incrementally. To create a new one, you must pass an object
+   * with the following properties:
+   *
+   *   - file: The filename of the generated source.
+   *   - sourceRoot: An optional root for all URLs in this source map.
+   */
+  function SourceMapGenerator(aArgs) {
+    this._file = util.getArg(aArgs, 'file');
+    this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
+    this._sources = new ArraySet();
+    this._names = new ArraySet();
+    this._mappings = [];
+    this._sourcesContents = null;
+  }
+
+  SourceMapGenerator.prototype._version = 3;
+
+  /**
+   * Creates a new SourceMapGenerator based on a SourceMapConsumer
+   *
+   * @param aSourceMapConsumer The SourceMap.
+   */
+  SourceMapGenerator.fromSourceMap =
+    function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
+      var sourceRoot = aSourceMapConsumer.sourceRoot;
+      var generator = new SourceMapGenerator({
+        file: aSourceMapConsumer.file,
+        sourceRoot: sourceRoot
+      });
+      aSourceMapConsumer.eachMapping(function (mapping) {
+        var newMapping = {
+          generated: {
+            line: mapping.generatedLine,
+            column: mapping.generatedColumn
+          }
+        };
+
+        if (mapping.source) {
+          newMapping.source = mapping.source;
+          if (sourceRoot) {
+            newMapping.source = util.relative(sourceRoot, newMapping.source);
+          }
+
+          newMapping.original = {
+            line: mapping.originalLine,
+            column: mapping.originalColumn
+          };
+
+          if (mapping.name) {
+            newMapping.name = mapping.name;
+          }
+        }
+
+        generator.addMapping(newMapping);
+      });
+      aSourceMapConsumer.sources.forEach(function (sourceFile) {
+        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+        if (content) {
+          generator.setSourceContent(sourceFile, content);
+        }
+      });
+      return generator;
+    };
+
+  /**
+   * Add a single mapping from original source line and column to the generated
+   * source's line and column for this source map being created. The mapping
+   * object should have the following properties:
+   *
+   *   - generated: An object with the generated line and column positions.
+   *   - original: An object with the original line and column positions.
+   *   - source: The original source file (relative to the sourceRoot).
+   *   - name: An optional original token name for this mapping.
+   */
+  SourceMapGenerator.prototype.addMapping =
+    function SourceMapGenerator_addMapping(aArgs) {
+      var generated = util.getArg(aArgs, 'generated');
+      var original = util.getArg(aArgs, 'original', null);
+      var source = util.getArg(aArgs, 'source', null);
+      var name = util.getArg(aArgs, 'name', null);
+
+      this._validateMapping(generated, original, source, name);
+
+      if (source && !this._sources.has(source)) {
+        this._sources.add(source);
+      }
+
+      if (name && !this._names.has(name)) {
+        this._names.add(name);
+      }
+
+      this._mappings.push({
+        generatedLine: generated.line,
+        generatedColumn: generated.column,
+        originalLine: original != null && original.line,
+        originalColumn: original != null && original.column,
+        source: source,
+        name: name
+      });
+    };
+
+  /**
+   * Set the source content for a source file.
+   */
+  SourceMapGenerator.prototype.setSourceContent =
+    function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
+      var source = aSourceFile;
+      if (this._sourceRoot) {
+        source = util.relative(this._sourceRoot, source);
+      }
+
+      if (aSourceContent !== null) {
+        // Add the source content to the _sourcesContents map.
+        // Create a new _sourcesContents map if the property is null.
+        if (!this._sourcesContents) {
+          this._sourcesContents = {};
+        }
+        this._sourcesContents[util.toSetString(source)] = aSourceContent;
+      } else {
+        // Remove the source file from the _sourcesContents map.
+        // If the _sourcesContents map is empty, set the property to null.
+        delete this._sourcesContents[util.toSetString(source)];
+        if (Object.keys(this._sourcesContents).length === 0) {
+          this._sourcesContents = null;
+        }
+      }
+    };
+
+  /**
+   * Applies the mappings of a sub-source-map for a specific source file to the
+   * source map being generated. Each mapping to the supplied source file is
+   * rewritten using the supplied source map. Note: The resolution for the
+   * resulting mappings is the minimium of this map and the supplied map.
+   *
+   * @param aSourceMapConsumer The source map to be applied.
+   * @param aSourceFile Optional. The filename of the source file.
+   *        If omitted, SourceMapConsumer's file property will be used.
+   */
+  SourceMapGenerator.prototype.applySourceMap =
+    function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile) {
+      // If aSourceFile is omitted, we will use the file property of the SourceMap
+      if (!aSourceFile) {
+        aSourceFile = aSourceMapConsumer.file;
+      }
+      var sourceRoot = this._sourceRoot;
+      // Make "aSourceFile" relative if an absolute Url is passed.
+      if (sourceRoot) {
+        aSourceFile = util.relative(sourceRoot, aSourceFile);
+      }
+      // Applying the SourceMap can add and remove items from the sources and
+      // the names array.
+      var newSources = new ArraySet();
+      var newNames = new ArraySet();
+
+      // Find mappings for the "aSourceFile"
+      this._mappings.forEach(function (mapping) {
+        if (mapping.source === aSourceFile && mapping.originalLine) {
+          // Check if it can be mapped by the source map, then update the mapping.
+          var original = aSourceMapConsumer.originalPositionFor({
+            line: mapping.originalLine,
+            column: mapping.originalColumn
+          });
+          if (original.source !== null) {
+            // Copy mapping
+            if (sourceRoot) {
+              mapping.source = util.relative(sourceRoot, original.source);
+            } else {
+              mapping.source = original.source;
+            }
+            mapping.originalLine = original.line;
+            mapping.originalColumn = original.column;
+            if (original.name !== null && mapping.name !== null) {
+              // Only use the identifier name if it's an identifier
+              // in both SourceMaps
+              mapping.name = original.name;
+            }
+          }
+        }
+
+        var source = mapping.source;
+        if (source && !newSources.has(source)) {
+          newSources.add(source);
+        }
+
+        var name = mapping.name;
+        if (name && !newNames.has(name)) {
+          newNames.add(name);
+        }
+
+      }, this);
+      this._sources = newSources;
+      this._names = newNames;
+
+      // Copy sourcesContents of applied map.
+      aSourceMapConsumer.sources.forEach(function (sourceFile) {
+        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+        if (content) {
+          if (sourceRoot) {
+            sourceFile = util.relative(sourceRoot, sourceFile);
+          }
+          this.setSourceContent(sourceFile, content);
+        }
+      }, this);
+    };
+
+  /**
+   * A mapping can have one of the three levels of data:
+   *
+   *   1. Just the generated position.
+   *   2. The Generated position, original position, and original source.
+   *   3. Generated and original position, original source, as well as a name
+   *      token.
+   *
+   * To maintain consistency, we validate that any new mapping being added falls
+   * in to one of these categories.
+   */
+  SourceMapGenerator.prototype._validateMapping =
+    function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
+                                                aName) {
+      if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+          && aGenerated.line > 0 && aGenerated.column >= 0
+          && !aOriginal && !aSource && !aName) {
+        // Case 1.
+        return;
+      }
+      else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+               && aOriginal && 'line' in aOriginal && 'column' in aOriginal
+               && aGenerated.line > 0 && aGenerated.column >= 0
+               && aOriginal.line > 0 && aOriginal.column >= 0
+               && aSource) {
+        // Cases 2 and 3.
+        return;
+      }
+      else {
+        throw new Error('Invalid mapping: ' + JSON.stringify({
+          generated: aGenerated,
+          source: aSource,
+          orginal: aOriginal,
+          name: aName
+        }));
+      }
+    };
+
+  /**
+   * Serialize the accumulated mappings in to the stream of base 64 VLQs
+   * specified by the source map format.
+   */
+  SourceMapGenerator.prototype._serializeMappings =
+    function SourceMapGenerator_serializeMappings() {
+      var previousGeneratedColumn = 0;
+      var previousGeneratedLine = 1;
+      var previousOriginalColumn = 0;
+      var previousOriginalLine = 0;
+      var previousName = 0;
+      var previousSource = 0;
+      var result = '';
+      var mapping;
+
+      // The mappings must be guaranteed to be in sorted order before we start
+      // serializing them or else the generated line numbers (which are defined
+      // via the ';' separators) will be all messed up. Note: it might be more
+      // performant to maintain the sorting as we insert them, rather than as we
+      // serialize them, but the big O is the same either way.
+      this._mappings.sort(util.compareByGeneratedPositions);
+
+      for (var i = 0, len = this._mappings.length; i < len; i++) {
+        mapping = this._mappings[i];
+
+        if (mapping.generatedLine !== previousGeneratedLine) {
+          previousGeneratedColumn = 0;
+          while (mapping.generatedLine !== previousGeneratedLine) {
+            result += ';';
+            previousGeneratedLine++;
+          }
+        }
+        else {
+          if (i > 0) {
+            if (!util.compareByGeneratedPositions(mapping, this._mappings[i - 1])) {
+              continue;
+            }
+            result += ',';
+          }
+        }
+
+        result += base64VLQ.encode(mapping.generatedColumn
+                                   - previousGeneratedColumn);
+        previousGeneratedColumn = mapping.generatedColumn;
+
+        if (mapping.source) {
+          result += base64VLQ.encode(this._sources.indexOf(mapping.source)
+                                     - previousSource);
+          previousSource = this._sources.indexOf(mapping.source);
+
+          // lines are stored 0-based in SourceMap spec version 3
+          result += base64VLQ.encode(mapping.originalLine - 1
+                                     - previousOriginalLine);
+          previousOriginalLine = mapping.originalLine - 1;
+
+          result += base64VLQ.encode(mapping.originalColumn
+                                     - previousOriginalColumn);
+          previousOriginalColumn = mapping.originalColumn;
+
+          if (mapping.name) {
+            result += base64VLQ.encode(this._names.indexOf(mapping.name)
+                                       - previousName);
+            previousName = this._names.indexOf(mapping.name);
+          }
+        }
+      }
+
+      return result;
+    };
+
+  SourceMapGenerator.prototype._generateSourcesContent =
+    function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
+      return aSources.map(function (source) {
+        if (!this._sourcesContents) {
+          return null;
+        }
+        if (aSourceRoot) {
+          source = util.relative(aSourceRoot, source);
+        }
+        var key = util.toSetString(source);
+        return Object.prototype.hasOwnProperty.call(this._sourcesContents,
+                                                    key)
+          ? this._sourcesContents[key]
+          : null;
+      }, this);
+    };
+
+  /**
+   * Externalize the source map.
+   */
+  SourceMapGenerator.prototype.toJSON =
+    function SourceMapGenerator_toJSON() {
+      var map = {
+        version: this._version,
+        file: this._file,
+        sources: this._sources.toArray(),
+        names: this._names.toArray(),
+        mappings: this._serializeMappings()
+      };
+      if (this._sourceRoot) {
+        map.sourceRoot = this._sourceRoot;
+      }
+      if (this._sourcesContents) {
+        map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
+      }
+
+      return map;
+    };
+
+  /**
+   * Render the source map being generated to a string.
+   */
+  SourceMapGenerator.prototype.toString =
+    function SourceMapGenerator_toString() {
+      return JSON.stringify(this);
+    };
+
+  exports.SourceMapGenerator = SourceMapGenerator;
+
+});
+
+},{"./array-set":12,"./base64-vlq":13,"./util":19,"amdefine":20}],18:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  var SourceMapGenerator = _dereq_('./source-map-generator').SourceMapGenerator;
+  var util = _dereq_('./util');
+
+  /**
+   * SourceNodes provide a way to abstract over interpolating/concatenating
+   * snippets of generated JavaScript source code while maintaining the line and
+   * column information associated with the original source code.
+   *
+   * @param aLine The original line number.
+   * @param aColumn The original column number.
+   * @param aSource The original source's filename.
+   * @param aChunks Optional. An array of strings which are snippets of
+   *        generated JS, or other SourceNodes.
+   * @param aName The original identifier.
+   */
+  function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
+    this.children = [];
+    this.sourceContents = {};
+    this.line = aLine === undefined ? null : aLine;
+    this.column = aColumn === undefined ? null : aColumn;
+    this.source = aSource === undefined ? null : aSource;
+    this.name = aName === undefined ? null : aName;
+    if (aChunks != null) this.add(aChunks);
+  }
+
+  /**
+   * Creates a SourceNode from generated code and a SourceMapConsumer.
+   *
+   * @param aGeneratedCode The generated code
+   * @param aSourceMapConsumer The SourceMap for the generated code
+   */
+  SourceNode.fromStringWithSourceMap =
+    function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer) {
+      // The SourceNode we want to fill with the generated code
+      // and the SourceMap
+      var node = new SourceNode();
+
+      // The generated code
+      // Processed fragments are removed from this array.
+      var remainingLines = aGeneratedCode.split('\n');
+
+      // We need to remember the position of "remainingLines"
+      var lastGeneratedLine = 1, lastGeneratedColumn = 0;
+
+      // The generate SourceNodes we need a code range.
+      // To extract it current and last mapping is used.
+      // Here we store the last mapping.
+      var lastMapping = null;
+
+      aSourceMapConsumer.eachMapping(function (mapping) {
+        if (lastMapping === null) {
+          // We add the generated code until the first mapping
+          // to the SourceNode without any mapping.
+          // Each line is added as separate string.
+          while (lastGeneratedLine < mapping.generatedLine) {
+            node.add(remainingLines.shift() + "\n");
+            lastGeneratedLine++;
+          }
+          if (lastGeneratedColumn < mapping.generatedColumn) {
+            var nextLine = remainingLines[0];
+            node.add(nextLine.substr(0, mapping.generatedColumn));
+            remainingLines[0] = nextLine.substr(mapping.generatedColumn);
+            lastGeneratedColumn = mapping.generatedColumn;
+          }
+        } else {
+          // We add the code from "lastMapping" to "mapping":
+          // First check if there is a new line in between.
+          if (lastGeneratedLine < mapping.generatedLine) {
+            var code = "";
+            // Associate full lines with "lastMapping"
+            do {
+              code += remainingLines.shift() + "\n";
+              lastGeneratedLine++;
+              lastGeneratedColumn = 0;
+            } while (lastGeneratedLine < mapping.generatedLine);
+            // When we reached the correct line, we add code until we
+            // reach the correct column too.
+            if (lastGeneratedColumn < mapping.generatedColumn) {
+              var nextLine = remainingLines[0];
+              code += nextLine.substr(0, mapping.generatedColumn);
+              remainingLines[0] = nextLine.substr(mapping.generatedColumn);
+              lastGeneratedColumn = mapping.generatedColumn;
+            }
+            // Create the SourceNode.
+            addMappingWithCode(lastMapping, code);
+          } else {
+            // There is no new line in between.
+            // Associate the code between "lastGeneratedColumn" and
+            // "mapping.generatedColumn" with "lastMapping"
+            var nextLine = remainingLines[0];
+            var code = nextLine.substr(0, mapping.generatedColumn -
+                                          lastGeneratedColumn);
+            remainingLines[0] = nextLine.substr(mapping.generatedColumn -
+                                                lastGeneratedColumn);
+            lastGeneratedColumn = mapping.generatedColumn;
+            addMappingWithCode(lastMapping, code);
+          }
+        }
+        lastMapping = mapping;
+      }, this);
+      // We have processed all mappings.
+      // Associate the remaining code in the current line with "lastMapping"
+      // and add the remaining lines without any mapping
+      addMappingWithCode(lastMapping, remainingLines.join("\n"));
+
+      // Copy sourcesContent into SourceNode
+      aSourceMapConsumer.sources.forEach(function (sourceFile) {
+        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+        if (content) {
+          node.setSourceContent(sourceFile, content);
+        }
+      });
+
+      return node;
+
+      function addMappingWithCode(mapping, code) {
+        if (mapping === null || mapping.source === undefined) {
+          node.add(code);
+        } else {
+          node.add(new SourceNode(mapping.originalLine,
+                                  mapping.originalColumn,
+                                  mapping.source,
+                                  code,
+                                  mapping.name));
+        }
+      }
+    };
+
+  /**
+   * Add a chunk of generated JS to this source node.
+   *
+   * @param aChunk A string snippet of generated JS code, another instance of
+   *        SourceNode, or an array where each member is one of those things.
+   */
+  SourceNode.prototype.add = function SourceNode_add(aChunk) {
+    if (Array.isArray(aChunk)) {
+      aChunk.forEach(function (chunk) {
+        this.add(chunk);
+      }, this);
+    }
+    else if (aChunk instanceof SourceNode || typeof aChunk === "string") {
+      if (aChunk) {
+        this.children.push(aChunk);
+      }
+    }
+    else {
+      throw new TypeError(
+        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+      );
+    }
+    return this;
+  };
+
+  /**
+   * Add a chunk of generated JS to the beginning of this source node.
+   *
+   * @param aChunk A string snippet of generated JS code, another instance of
+   *        SourceNode, or an array where each member is one of those things.
+   */
+  SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
+    if (Array.isArray(aChunk)) {
+      for (var i = aChunk.length-1; i >= 0; i--) {
+        this.prepend(aChunk[i]);
+      }
+    }
+    else if (aChunk instanceof SourceNode || typeof aChunk === "string") {
+      this.children.unshift(aChunk);
+    }
+    else {
+      throw new TypeError(
+        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+      );
+    }
+    return this;
+  };
+
+  /**
+   * Walk over the tree of JS snippets in this node and its children. The
+   * walking function is called once for each snippet of JS and is passed that
+   * snippet and the its original associated source's line/column location.
+   *
+   * @param aFn The traversal function.
+   */
+  SourceNode.prototype.walk = function SourceNode_walk(aFn) {
+    var chunk;
+    for (var i = 0, len = this.children.length; i < len; i++) {
+      chunk = this.children[i];
+      if (chunk instanceof SourceNode) {
+        chunk.walk(aFn);
+      }
+      else {
+        if (chunk !== '') {
+          aFn(chunk, { source: this.source,
+                       line: this.line,
+                       column: this.column,
+                       name: this.name });
+        }
+      }
+    }
+  };
+
+  /**
+   * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
+   * each of `this.children`.
+   *
+   * @param aSep The separator.
+   */
+  SourceNode.prototype.join = function SourceNode_join(aSep) {
+    var newChildren;
+    var i;
+    var len = this.children.length;
+    if (len > 0) {
+      newChildren = [];
+      for (i = 0; i < len-1; i++) {
+        newChildren.push(this.children[i]);
+        newChildren.push(aSep);
+      }
+      newChildren.push(this.children[i]);
+      this.children = newChildren;
+    }
+    return this;
+  };
+
+  /**
+   * Call String.prototype.replace on the very right-most source snippet. Useful
+   * for trimming whitespace from the end of a source node, etc.
+   *
+   * @param aPattern The pattern to replace.
+   * @param aReplacement The thing to replace the pattern with.
+   */
+  SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
+    var lastChild = this.children[this.children.length - 1];
+    if (lastChild instanceof SourceNode) {
+      lastChild.replaceRight(aPattern, aReplacement);
+    }
+    else if (typeof lastChild === 'string') {
+      this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
+    }
+    else {
+      this.children.push(''.replace(aPattern, aReplacement));
+    }
+    return this;
+  };
+
+  /**
+   * Set the source content for a source file. This will be added to the SourceMapGenerator
+   * in the sourcesContent field.
+   *
+   * @param aSourceFile The filename of the source file
+   * @param aSourceContent The content of the source file
+   */
+  SourceNode.prototype.setSourceContent =
+    function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
+      this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
+    };
+
+  /**
+   * Walk over the tree of SourceNodes. The walking function is called for each
+   * source file content and is passed the filename and source content.
+   *
+   * @param aFn The traversal function.
+   */
+  SourceNode.prototype.walkSourceContents =
+    function SourceNode_walkSourceContents(aFn) {
+      for (var i = 0, len = this.children.length; i < len; i++) {
+        if (this.children[i] instanceof SourceNode) {
+          this.children[i].walkSourceContents(aFn);
+        }
+      }
+
+      var sources = Object.keys(this.sourceContents);
+      for (var i = 0, len = sources.length; i < len; i++) {
+        aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
+      }
+    };
+
+  /**
+   * Return the string representation of this source node. Walks over the tree
+   * and concatenates all the various snippets together to one string.
+   */
+  SourceNode.prototype.toString = function SourceNode_toString() {
+    var str = "";
+    this.walk(function (chunk) {
+      str += chunk;
+    });
+    return str;
+  };
+
+  /**
+   * Returns the string representation of this source node along with a source
+   * map.
+   */
+  SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
+    var generated = {
+      code: "",
+      line: 1,
+      column: 0
+    };
+    var map = new SourceMapGenerator(aArgs);
+    var sourceMappingActive = false;
+    var lastOriginalSource = null;
+    var lastOriginalLine = null;
+    var lastOriginalColumn = null;
+    var lastOriginalName = null;
+    this.walk(function (chunk, original) {
+      generated.code += chunk;
+      if (original.source !== null
+          && original.line !== null
+          && original.column !== null) {
+        if(lastOriginalSource !== original.source
+           || lastOriginalLine !== original.line
+           || lastOriginalColumn !== original.column
+           || lastOriginalName !== original.name) {
+          map.addMapping({
+            source: original.source,
+            original: {
+              line: original.line,
+              column: original.column
+            },
+            generated: {
+              line: generated.line,
+              column: generated.column
+            },
+            name: original.name
+          });
+        }
+        lastOriginalSource = original.source;
+        lastOriginalLine = original.line;
+        lastOriginalColumn = original.column;
+        lastOriginalName = original.name;
+        sourceMappingActive = true;
+      } else if (sourceMappingActive) {
+        map.addMapping({
+          generated: {
+            line: generated.line,
+            column: generated.column
+          }
+        });
+        lastOriginalSource = null;
+        sourceMappingActive = false;
+      }
+      chunk.split('').forEach(function (ch) {
+        if (ch === '\n') {
+          generated.line++;
+          generated.column = 0;
+        } else {
+          generated.column++;
+        }
+      });
+    });
+    this.walkSourceContents(function (sourceFile, sourceContent) {
+      map.setSourceContent(sourceFile, sourceContent);
+    });
+
+    return { code: generated.code, map: map };
+  };
+
+  exports.SourceNode = SourceNode;
+
+});
+
+},{"./source-map-generator":17,"./util":19,"amdefine":20}],19:[function(_dereq_,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+if (typeof define !== 'function') {
+    var define = _dereq_('amdefine')(module, _dereq_);
+}
+define(function (_dereq_, exports, module) {
+
+  /**
+   * This is a helper function for getting values from parameter/options
+   * objects.
+   *
+   * @param args The object we are extracting values from
+   * @param name The name of the property we are getting.
+   * @param defaultValue An optional value to return if the property is missing
+   * from the object. If this is not specified and the property is missing, an
+   * error will be thrown.
+   */
+  function getArg(aArgs, aName, aDefaultValue) {
+    if (aName in aArgs) {
+      return aArgs[aName];
+    } else if (arguments.length === 3) {
+      return aDefaultValue;
+    } else {
+      throw new Error('"' + aName + '" is a required argument.');
+    }
+  }
+  exports.getArg = getArg;
+
+  var urlRegexp = /([\w+\-.]+):\/\/((\w+:\w+)@)?([\w.]+)?(:(\d+))?(\S+)?/;
+  var dataUrlRegexp = /^data:.+\,.+/;
+
+  function urlParse(aUrl) {
+    var match = aUrl.match(urlRegexp);
+    if (!match) {
+      return null;
+    }
+    return {
+      scheme: match[1],
+      auth: match[3],
+      host: match[4],
+      port: match[6],
+      path: match[7]
+    };
+  }
+  exports.urlParse = urlParse;
+
+  function urlGenerate(aParsedUrl) {
+    var url = aParsedUrl.scheme + "://";
+    if (aParsedUrl.auth) {
+      url += aParsedUrl.auth + "@"
+    }
+    if (aParsedUrl.host) {
+      url += aParsedUrl.host;
+    }
+    if (aParsedUrl.port) {
+      url += ":" + aParsedUrl.port
+    }
+    if (aParsedUrl.path) {
+      url += aParsedUrl.path;
+    }
+    return url;
+  }
+  exports.urlGenerate = urlGenerate;
+
+  function join(aRoot, aPath) {
+    var url;
+
+    if (aPath.match(urlRegexp) || aPath.match(dataUrlRegexp)) {
+      return aPath;
+    }
+
+    if (aPath.charAt(0) === '/' && (url = urlParse(aRoot))) {
+      url.path = aPath;
+      return urlGenerate(url);
+    }
+
+    return aRoot.replace(/\/$/, '') + '/' + aPath;
+  }
+  exports.join = join;
+
+  /**
+   * Because behavior goes wacky when you set `__proto__` on objects, we
+   * have to prefix all the strings in our set with an arbitrary character.
+   *
+   * See https://github.com/mozilla/source-map/pull/31 and
+   * https://github.com/mozilla/source-map/issues/30
+   *
+   * @param String aStr
+   */
+  function toSetString(aStr) {
+    return '$' + aStr;
+  }
+  exports.toSetString = toSetString;
+
+  function fromSetString(aStr) {
+    return aStr.substr(1);
+  }
+  exports.fromSetString = fromSetString;
+
+  function relative(aRoot, aPath) {
+    aRoot = aRoot.replace(/\/$/, '');
+
+    var url = urlParse(aRoot);
+    if (aPath.charAt(0) == "/" && url && url.path == "/") {
+      return aPath.slice(1);
+    }
+
+    return aPath.indexOf(aRoot + '/') === 0
+      ? aPath.substr(aRoot.length + 1)
+      : aPath;
+  }
+  exports.relative = relative;
+
+  function strcmp(aStr1, aStr2) {
+    var s1 = aStr1 || "";
+    var s2 = aStr2 || "";
+    return (s1 > s2) - (s1 < s2);
+  }
+
+  /**
+   * Comparator between two mappings where the original positions are compared.
+   *
+   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+   * mappings with the same original source/line/column, but different generated
+   * line and column the same. Useful when searching for a mapping with a
+   * stubbed out mapping.
+   */
+  function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
+    var cmp;
+
+    cmp = strcmp(mappingA.source, mappingB.source);
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalLine - mappingB.originalLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalColumn - mappingB.originalColumn;
+    if (cmp || onlyCompareOriginal) {
+      return cmp;
+    }
+
+    cmp = strcmp(mappingA.name, mappingB.name);
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.generatedLine - mappingB.generatedLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    return mappingA.generatedColumn - mappingB.generatedColumn;
+  };
+  exports.compareByOriginalPositions = compareByOriginalPositions;
+
+  /**
+   * Comparator between two mappings where the generated positions are
+   * compared.
+   *
+   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+   * mappings with the same generated line and column, but different
+   * source/name/original line and column the same. Useful when searching for a
+   * mapping with a stubbed out mapping.
+   */
+  function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
+    var cmp;
+
+    cmp = mappingA.generatedLine - mappingB.generatedLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+    if (cmp || onlyCompareGenerated) {
+      return cmp;
+    }
+
+    cmp = strcmp(mappingA.source, mappingB.source);
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalLine - mappingB.originalLine;
+    if (cmp) {
+      return cmp;
+    }
+
+    cmp = mappingA.originalColumn - mappingB.originalColumn;
+    if (cmp) {
+      return cmp;
+    }
+
+    return strcmp(mappingA.name, mappingB.name);
+  };
+  exports.compareByGeneratedPositions = compareByGeneratedPositions;
+
+});
+
+},{"amdefine":20}],20:[function(_dereq_,module,exports){
+(function (process,__filename){
+/** vim: et:ts=4:sw=4:sts=4
+ * @license amdefine 0.1.0 Copyright (c) 2011, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/amdefine for details
+ */
+
+/*jslint node: true */
+/*global module, process */
+'use strict';
+
+/**
+ * Creates a define for node.
+ * @param {Object} module the "module" object that is defined by Node for the
+ * current module.
+ * @param {Function} [requireFn]. Node's require function for the current module.
+ * It only needs to be passed in Node versions before 0.5, when module.require
+ * did not exist.
+ * @returns {Function} a define function that is usable for the current node
+ * module.
+ */
+function amdefine(module, requireFn) {
+    'use strict';
+    var defineCache = {},
+        loaderCache = {},
+        alreadyCalled = false,
+        path = _dereq_('path'),
+        makeRequire, stringRequire;
+
+    /**
+     * Trims the . and .. from an array of path segments.
+     * It will keep a leading path segment if a .. will become
+     * the first path segment, to help with module name lookups,
+     * which act like paths, but can be remapped. But the end result,
+     * all paths that use this function should look normalized.
+     * NOTE: this method MODIFIES the input array.
+     * @param {Array} ary the array of path segments.
+     */
+    function trimDots(ary) {
+        var i, part;
+        for (i = 0; ary[i]; i+= 1) {
+            part = ary[i];
+            if (part === '.') {
+                ary.splice(i, 1);
+                i -= 1;
+            } else if (part === '..') {
+                if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
+                    //End of the line. Keep at least one non-dot
+                    //path segment at the front so it can be mapped
+                    //correctly to disk. Otherwise, there is likely
+                    //no path mapping for a path starting with '..'.
+                    //This can still fail, but catches the most reasonable
+                    //uses of ..
+                    break;
+                } else if (i > 0) {
+                    ary.splice(i - 1, 2);
+                    i -= 2;
+                }
+            }
+        }
+    }
+
+    function normalize(name, baseName) {
+        var baseParts;
+
+        //Adjust any relative paths.
+        if (name && name.charAt(0) === '.') {
+            //If have a base name, try to normalize against it,
+            //otherwise, assume it is a top-level require that will
+            //be relative to baseUrl in the end.
+            if (baseName) {
+                baseParts = baseName.split('/');
+                baseParts = baseParts.slice(0, baseParts.length - 1);
+                baseParts = baseParts.concat(name.split('/'));
+                trimDots(baseParts);
+                name = baseParts.join('/');
+            }
+        }
+
+        return name;
+    }
+
+    /**
+     * Create the normalize() function passed to a loader plugin's
+     * normalize method.
+     */
+    function makeNormalize(relName) {
+        return function (name) {
+            return normalize(name, relName);
+        };
+    }
+
+    function makeLoad(id) {
+        function load(value) {
+            loaderCache[id] = value;
+        }
+
+        load.fromText = function (id, text) {
+            //This one is difficult because the text can/probably uses
+            //define, and any relative paths and requires should be relative
+            //to that id was it would be found on disk. But this would require
+            //bootstrapping a module/require fairly deeply from node core.
+            //Not sure how best to go about that yet.
+            throw new Error('amdefine does not implement load.fromText');
+        };
+
+        return load;
+    }
+
+    makeRequire = function (systemRequire, exports, module, relId) {
+        function amdRequire(deps, callback) {
+            if (typeof deps === 'string') {
+                //Synchronous, single module require('')
+                return stringRequire(systemRequire, exports, module, deps, relId);
+            } else {
+                //Array of dependencies with a callback.
+
+                //Convert the dependencies to modules.
+                deps = deps.map(function (depName) {
+                    return stringRequire(systemRequire, exports, module, depName, relId);
+                });
+
+                //Wait for next tick to call back the require call.
+                process.nextTick(function () {
+                    callback.apply(null, deps);
+                });
+            }
+        }
+
+        amdRequire.toUrl = function (filePath) {
+            if (filePath.indexOf('.') === 0) {
+                return normalize(filePath, path.dirname(module.filename));
+            } else {
+                return filePath;
+            }
+        };
+
+        return amdRequire;
+    };
+
+    //Favor explicit value, passed in if the module wants to support Node 0.4.
+    requireFn = requireFn || function req() {
+        return module.require.apply(module, arguments);
+    };
+
+    function runFactory(id, deps, factory) {
+        var r, e, m, result;
+
+        if (id) {
+            e = loaderCache[id] = {};
+            m = {
+                id: id,
+                uri: __filename,
+                exports: e
+            };
+            r = makeRequire(requireFn, e, m, id);
+        } else {
+            //Only support one define call per file
+            if (alreadyCalled) {
+                throw new Error('amdefine with no module ID cannot be called more than once per file.');
+            }
+            alreadyCalled = true;
+
+            //Use the real variables from node
+            //Use module.exports for exports, since
+            //the exports in here is amdefine exports.
+            e = module.exports;
+            m = module;
+            r = makeRequire(requireFn, e, m, module.id);
+        }
+
+        //If there are dependencies, they are strings, so need
+        //to convert them to dependency values.
+        if (deps) {
+            deps = deps.map(function (depName) {
+                return r(depName);
+            });
+        }
+
+        //Call the factory with the right dependencies.
+        if (typeof factory === 'function') {
+            result = factory.apply(m.exports, deps);
+        } else {
+            result = factory;
+        }
+
+        if (result !== undefined) {
+            m.exports = result;
+            if (id) {
+                loaderCache[id] = m.exports;
+            }
+        }
+    }
+
+    stringRequire = function (systemRequire, exports, module, id, relId) {
+        //Split the ID by a ! so that
+        var index = id.indexOf('!'),
+            originalId = id,
+            prefix, plugin;
+
+        if (index === -1) {
+            id = normalize(id, relId);
+
+            //Straight module lookup. If it is one of the special dependencies,
+            //deal with it, otherwise, delegate to node.
+            if (id === 'require') {
+                return makeRequire(systemRequire, exports, module, relId);
+            } else if (id === 'exports') {
+                return exports;
+            } else if (id === 'module') {
+                return module;
+            } else if (loaderCache.hasOwnProperty(id)) {
+                return loaderCache[id];
+            } else if (defineCache[id]) {
+                runFactory.apply(null, defineCache[id]);
+                return loaderCache[id];
+            } else {
+                if(systemRequire) {
+                    return systemRequire(originalId);
+                } else {
+                    throw new Error('No module with ID: ' + id);
+                }
+            }
+        } else {
+            //There is a plugin in play.
+            prefix = id.substring(0, index);
+            id = id.substring(index + 1, id.length);
+
+            plugin = stringRequire(systemRequire, exports, module, prefix, relId);
+
+            if (plugin.normalize) {
+                id = plugin.normalize(id, makeNormalize(relId));
+            } else {
+                //Normalize the ID normally.
+                id = normalize(id, relId);
+            }
+
+            if (loaderCache[id]) {
+                return loaderCache[id];
+            } else {
+                plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});
+
+                return loaderCache[id];
+            }
+        }
+    };
+
+    //Create a define function specific to the module asking for amdefine.
+    function define(id, deps, factory) {
+        if (Array.isArray(id)) {
+            factory = deps;
+            deps = id;
+            id = undefined;
+        } else if (typeof id !== 'string') {
+            factory = id;
+            id = deps = undefined;
+        }
+
+        if (deps && !Array.isArray(deps)) {
+            factory = deps;
+            deps = undefined;
+        }
+
+        if (!deps) {
+            deps = ['require', 'exports', 'module'];
+        }
+
+        //Set up properties for this module. If an ID, then use
+        //internal cache. If no ID, then use the external variables
+        //for this node module.
+        if (id) {
+            //Put the module in deep freeze until there is a
+            //require call for it.
+            defineCache[id] = [id, deps, factory];
+        } else {
+            runFactory(id, deps, factory);
+        }
+    }
+
+    //define.require, which has access to all the values in the
+    //cache. Useful for AMD modules that all have IDs in the file,
+    //but need to finally export a value to node based on one of those
+    //IDs.
+    define.require = function (id) {
+        if (loaderCache[id]) {
+            return loaderCache[id];
+        }
+
+        if (defineCache[id]) {
+            runFactory.apply(null, defineCache[id]);
+            return loaderCache[id];
+        }
+    };
+
+    define.amd = {};
+
+    return define;
+}
+
+module.exports = amdefine;
+
+}).call(this,_dereq_('_process'),"/node_modules/jstransform/node_modules/source-map/node_modules/amdefine/amdefine.js")
+},{"_process":8,"path":7}],21:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var docblockRe = /^\s*(\/\*\*(.|\r?\n)*?\*\/)/;
+var ltrimRe = /^\s*/;
+/**
+ * @param {String} contents
+ * @return {String}
+ */
+function extract(contents) {
+  var match = contents.match(docblockRe);
+  if (match) {
+    return match[0].replace(ltrimRe, '') || '';
+  }
+  return '';
+}
+
+
+var commentStartRe = /^\/\*\*?/;
+var commentEndRe = /\*+\/$/;
+var wsRe = /[\t ]+/g;
+var stringStartRe = /(\r?\n|^) *\*/g;
+var multilineRe = /(?:^|\r?\n) *(@[^\r\n]*?) *\r?\n *([^@\r\n\s][^@\r\n]+?) *\r?\n/g;
+var propertyRe = /(?:^|\r?\n) *@(\S+) *([^\r\n]*)/g;
+
+/**
+ * @param {String} contents
+ * @return {Array}
+ */
+function parse(docblock) {
+  docblock = docblock
+    .replace(commentStartRe, '')
+    .replace(commentEndRe, '')
+    .replace(wsRe, ' ')
+    .replace(stringStartRe, '$1');
+
+  // Normalize multi-line directives
+  var prev = '';
+  while (prev != docblock) {
+    prev = docblock;
+    docblock = docblock.replace(multilineRe, "\n$1 $2\n");
+  }
+  docblock = docblock.trim();
+
+  var result = [];
+  var match;
+  while (match = propertyRe.exec(docblock)) {
+    result.push([match[1], match[2]]);
+  }
+
+  return result;
+}
+
+/**
+ * Same as parse but returns an object of prop: value instead of array of paris
+ * If a property appers more than once the last one will be returned
+ *
+ * @param {String} contents
+ * @return {Object}
+ */
+function parseAsObject(docblock) {
+  var pairs = parse(docblock);
+  var result = {};
+  for (var i = 0; i < pairs.length; i++) {
+    result[pairs[i][0]] = pairs[i][1];
+  }
+  return result;
+}
+
+
+exports.extract = extract;
+exports.parse = parse;
+exports.parseAsObject = parseAsObject;
+
+},{}],22:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/*jslint node: true*/
+"use strict";
+
+var esprima = _dereq_('esprima-fb');
+var utils = _dereq_('./utils');
+
+var getBoundaryNode = utils.getBoundaryNode;
+var declareIdentInScope = utils.declareIdentInLocalScope;
+var initScopeMetadata = utils.initScopeMetadata;
+var Syntax = esprima.Syntax;
+
+/**
+ * @param {object} node
+ * @param {object} parentNode
+ * @return {boolean}
+ */
+function _nodeIsClosureScopeBoundary(node, parentNode) {
+  if (node.type === Syntax.Program) {
+    return true;
+  }
+
+  var parentIsFunction =
+    parentNode.type === Syntax.FunctionDeclaration
+    || parentNode.type === Syntax.FunctionExpression
+    || parentNode.type === Syntax.ArrowFunctionExpression;
+
+  var parentIsCurlylessArrowFunc =
+    parentNode.type === Syntax.ArrowFunctionExpression
+    && node === parentNode.body;
+
+  return parentIsFunction
+         && (node.type === Syntax.BlockStatement || parentIsCurlylessArrowFunc);
+}
+
+function _nodeIsBlockScopeBoundary(node, parentNode) {
+  if (node.type === Syntax.Program) {
+    return false;
+  }
+
+  return node.type === Syntax.BlockStatement
+         && parentNode.type === Syntax.CatchClause;
+}
+
+/**
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function traverse(node, path, state) {
+  /*jshint -W004*/
+  // Create a scope stack entry if this is the first node we've encountered in
+  // its local scope
+  var startIndex = null;
+  var parentNode = path[0];
+  if (!Array.isArray(node) && state.localScope.parentNode !== parentNode) {
+    if (_nodeIsClosureScopeBoundary(node, parentNode)) {
+      var scopeIsStrict = state.scopeIsStrict;
+      if (!scopeIsStrict
+          && (node.type === Syntax.BlockStatement
+              || node.type === Syntax.Program)) {
+          scopeIsStrict =
+            node.body.length > 0
+            && node.body[0].type === Syntax.ExpressionStatement
+            && node.body[0].expression.type === Syntax.Literal
+            && node.body[0].expression.value === 'use strict';
+      }
+
+      if (node.type === Syntax.Program) {
+        startIndex = state.g.buffer.length;
+        state = utils.updateState(state, {
+          scopeIsStrict: scopeIsStrict
+        });
+      } else {
+        startIndex = state.g.buffer.length + 1;
+        state = utils.updateState(state, {
+          localScope: {
+            parentNode: parentNode,
+            parentScope: state.localScope,
+            identifiers: {},
+            tempVarIndex: 0,
+            tempVars: []
+          },
+          scopeIsStrict: scopeIsStrict
+        });
+
+        // All functions have an implicit 'arguments' object in scope
+        declareIdentInScope('arguments', initScopeMetadata(node), state);
+
+        // Include function arg identifiers in the scope boundaries of the
+        // function
+        if (parentNode.params.length > 0) {
+          var param;
+          var metadata = initScopeMetadata(parentNode, path.slice(1), path[0]);
+          for (var i = 0; i < parentNode.params.length; i++) {
+            param = parentNode.params[i];
+            if (param.type === Syntax.Identifier) {
+              declareIdentInScope(param.name, metadata, state);
+            }
+          }
+        }
+
+        // Include rest arg identifiers in the scope boundaries of their
+        // functions
+        if (parentNode.rest) {
+          var metadata = initScopeMetadata(
+            parentNode,
+            path.slice(1),
+            path[0]
+          );
+          declareIdentInScope(parentNode.rest.name, metadata, state);
+        }
+
+        // Named FunctionExpressions scope their name within the body block of
+        // themselves only
+        if (parentNode.type === Syntax.FunctionExpression && parentNode.id) {
+          var metaData =
+            initScopeMetadata(parentNode, path.parentNodeslice, parentNode);
+          declareIdentInScope(parentNode.id.name, metaData, state);
+        }
+      }
+
+      // Traverse and find all local identifiers in this closure first to
+      // account for function/variable declaration hoisting
+      collectClosureIdentsAndTraverse(node, path, state);
+    }
+
+    if (_nodeIsBlockScopeBoundary(node, parentNode)) {
+      startIndex = state.g.buffer.length;
+      state = utils.updateState(state, {
+        localScope: {
+          parentNode: parentNode,
+          parentScope: state.localScope,
+          identifiers: {},
+          tempVarIndex: 0,
+          tempVars: []
+        }
+      });
+
+      if (parentNode.type === Syntax.CatchClause) {
+        var metadata = initScopeMetadata(
+          parentNode,
+          path.slice(1),
+          parentNode
+        );
+        declareIdentInScope(parentNode.param.name, metadata, state);
+      }
+      collectBlockIdentsAndTraverse(node, path, state);
+    }
+  }
+
+  // Only catchup() before and after traversing a child node
+  function traverser(node, path, state) {
+    node.range && utils.catchup(node.range[0], state);
+    traverse(node, path, state);
+    node.range && utils.catchup(node.range[1], state);
+  }
+
+  utils.analyzeAndTraverse(walker, traverser, node, path, state);
+
+  // Inject temp variables into the scope.
+  if (startIndex !== null) {
+    utils.injectTempVarDeclarations(state, startIndex);
+  }
+}
+
+function collectClosureIdentsAndTraverse(node, path, state) {
+  utils.analyzeAndTraverse(
+    visitLocalClosureIdentifiers,
+    collectClosureIdentsAndTraverse,
+    node,
+    path,
+    state
+  );
+}
+
+function collectBlockIdentsAndTraverse(node, path, state) {
+  utils.analyzeAndTraverse(
+    visitLocalBlockIdentifiers,
+    collectBlockIdentsAndTraverse,
+    node,
+    path,
+    state
+  );
+}
+
+function visitLocalClosureIdentifiers(node, path, state) {
+  var metaData;
+  switch (node.type) {
+    case Syntax.ArrowFunctionExpression:
+    case Syntax.FunctionExpression:
+      // Function expressions don't get their names (if there is one) added to
+      // the closure scope they're defined in
+      return false;
+    case Syntax.ClassDeclaration:
+    case Syntax.ClassExpression:
+    case Syntax.FunctionDeclaration:
+      if (node.id) {
+        metaData = initScopeMetadata(getBoundaryNode(path), path.slice(), node);
+        declareIdentInScope(node.id.name, metaData, state);
+      }
+      return false;
+    case Syntax.VariableDeclarator:
+      // Variables have function-local scope
+      if (path[0].kind === 'var') {
+        metaData = initScopeMetadata(getBoundaryNode(path), path.slice(), node);
+        declareIdentInScope(node.id.name, metaData, state);
+      }
+      break;
+  }
+}
+
+function visitLocalBlockIdentifiers(node, path, state) {
+  // TODO: Support 'let' here...maybe...one day...or something...
+  if (node.type === Syntax.CatchClause) {
+    return false;
+  }
+}
+
+function walker(node, path, state) {
+  var visitors = state.g.visitors;
+  for (var i = 0; i < visitors.length; i++) {
+    if (visitors[i].test(node, path, state)) {
+      return visitors[i](traverse, node, path, state);
+    }
+  }
+}
+
+var _astCache = {};
+
+function getAstForSource(source, options) {
+  if (_astCache[source] && !options.disableAstCache) {
+    return _astCache[source];
+  }
+  var ast = esprima.parse(source, {
+    comment: true,
+    loc: true,
+    range: true,
+    sourceType: options.sourceType
+  });
+  if (!options.disableAstCache) {
+    _astCache[source] = ast;
+  }
+  return ast;
+}
+
+/**
+ * Applies all available transformations to the source
+ * @param {array} visitors
+ * @param {string} source
+ * @param {?object} options
+ * @return {object}
+ */
+function transform(visitors, source, options) {
+  options = options || {};
+  var ast;
+  try {
+    ast = getAstForSource(source, options);
+    } catch (e) {
+    e.message = 'Parse Error: ' + e.message;
+    throw e;
+  }
+  var state = utils.createState(source, ast, options);
+  state.g.visitors = visitors;
+
+  if (options.sourceMap) {
+    var SourceMapGenerator = _dereq_('source-map').SourceMapGenerator;
+    state.g.sourceMap = new SourceMapGenerator({file: options.filename || 'transformed.js'});
+  }
+
+  traverse(ast, [], state);
+  utils.catchup(source.length, state);
+
+  var ret = {code: state.g.buffer, extra: state.g.extra};
+  if (options.sourceMap) {
+    ret.sourceMap = state.g.sourceMap;
+    ret.sourceMapFilename =  options.filename || 'source.js';
+  }
+  return ret;
+}
+
+exports.transform = transform;
+exports.Syntax = Syntax;
+
+},{"./utils":23,"esprima-fb":9,"source-map":11}],23:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/*jslint node: true*/
+var Syntax = _dereq_('esprima-fb').Syntax;
+var leadingIndentRegexp = /(^|\n)( {2}|\t)/g;
+var nonWhiteRegexp = /(\S)/g;
+
+/**
+ * A `state` object represents the state of the parser. It has "local" and
+ * "global" parts. Global contains parser position, source, etc. Local contains
+ * scope based properties like current class name. State should contain all the
+ * info required for transformation. It's the only mandatory object that is
+ * being passed to every function in transform chain.
+ *
+ * @param  {string} source
+ * @param  {object} transformOptions
+ * @return {object}
+ */
+function createState(source, rootNode, transformOptions) {
+  return {
+    /**
+     * A tree representing the current local scope (and its lexical scope chain)
+     * Useful for tracking identifiers from parent scopes, etc.
+     * @type {Object}
+     */
+    localScope: {
+      parentNode: rootNode,
+      parentScope: null,
+      identifiers: {},
+      tempVarIndex: 0,
+      tempVars: []
+    },
+    /**
+     * The name (and, if applicable, expression) of the super class
+     * @type {Object}
+     */
+    superClass: null,
+    /**
+     * The namespace to use when munging identifiers
+     * @type {String}
+     */
+    mungeNamespace: '',
+    /**
+     * Ref to the node for the current MethodDefinition
+     * @type {Object}
+     */
+    methodNode: null,
+    /**
+     * Ref to the node for the FunctionExpression of the enclosing
+     * MethodDefinition
+     * @type {Object}
+     */
+    methodFuncNode: null,
+    /**
+     * Name of the enclosing class
+     * @type {String}
+     */
+    className: null,
+    /**
+     * Whether we're currently within a `strict` scope
+     * @type {Bool}
+     */
+    scopeIsStrict: null,
+    /**
+     * Indentation offset
+     * @type {Number}
+     */
+    indentBy: 0,
+    /**
+     * Global state (not affected by updateState)
+     * @type {Object}
+     */
+    g: {
+      /**
+       * A set of general options that transformations can consider while doing
+       * a transformation:
+       *
+       * - minify
+       *   Specifies that transformation steps should do their best to minify
+       *   the output source when possible. This is useful for places where
+       *   minification optimizations are possible with higher-level context
+       *   info than what jsxmin can provide.
+       *
+       *   For example, the ES6 class transform will minify munged private
+       *   variables if this flag is set.
+       */
+      opts: transformOptions,
+      /**
+       * Current position in the source code
+       * @type {Number}
+       */
+      position: 0,
+      /**
+       * Auxiliary data to be returned by transforms
+       * @type {Object}
+       */
+      extra: {},
+      /**
+       * Buffer containing the result
+       * @type {String}
+       */
+      buffer: '',
+      /**
+       * Source that is being transformed
+       * @type {String}
+       */
+      source: source,
+
+      /**
+       * Cached parsed docblock (see getDocblock)
+       * @type {object}
+       */
+      docblock: null,
+
+      /**
+       * Whether the thing was used
+       * @type {Boolean}
+       */
+      tagNamespaceUsed: false,
+
+      /**
+       * If using bolt xjs transformation
+       * @type {Boolean}
+       */
+      isBolt: undefined,
+
+      /**
+       * Whether to record source map (expensive) or not
+       * @type {SourceMapGenerator|null}
+       */
+      sourceMap: null,
+
+      /**
+       * Filename of the file being processed. Will be returned as a source
+       * attribute in the source map
+       */
+      sourceMapFilename: 'source.js',
+
+      /**
+       * Only when source map is used: last line in the source for which
+       * source map was generated
+       * @type {Number}
+       */
+      sourceLine: 1,
+
+      /**
+       * Only when source map is used: last line in the buffer for which
+       * source map was generated
+       * @type {Number}
+       */
+      bufferLine: 1,
+
+      /**
+       * The top-level Program AST for the original file.
+       */
+      originalProgramAST: null,
+
+      sourceColumn: 0,
+      bufferColumn: 0
+    }
+  };
+}
+
+/**
+ * Updates a copy of a given state with "update" and returns an updated state.
+ *
+ * @param  {object} state
+ * @param  {object} update
+ * @return {object}
+ */
+function updateState(state, update) {
+  var ret = Object.create(state);
+  Object.keys(update).forEach(function(updatedKey) {
+    ret[updatedKey] = update[updatedKey];
+  });
+  return ret;
+}
+
+/**
+ * Given a state fill the resulting buffer from the original source up to
+ * the end
+ *
+ * @param {number} end
+ * @param {object} state
+ * @param {?function} contentTransformer Optional callback to transform newly
+ *                                       added content.
+ */
+function catchup(end, state, contentTransformer) {
+  if (end < state.g.position) {
+    // cannot move backwards
+    return;
+  }
+  var source = state.g.source.substring(state.g.position, end);
+  var transformed = updateIndent(source, state);
+  if (state.g.sourceMap && transformed) {
+    // record where we are
+    state.g.sourceMap.addMapping({
+      generated: { line: state.g.bufferLine, column: state.g.bufferColumn },
+      original: { line: state.g.sourceLine, column: state.g.sourceColumn },
+      source: state.g.sourceMapFilename
+    });
+
+    // record line breaks in transformed source
+    var sourceLines = source.split('\n');
+    var transformedLines = transformed.split('\n');
+    // Add line break mappings between last known mapping and the end of the
+    // added piece. So for the code piece
+    //  (foo, bar);
+    // > var x = 2;
+    // > var b = 3;
+    //   var c =
+    // only add lines marked with ">": 2, 3.
+    for (var i = 1; i < sourceLines.length - 1; i++) {
+      state.g.sourceMap.addMapping({
+        generated: { line: state.g.bufferLine, column: 0 },
+        original: { line: state.g.sourceLine, column: 0 },
+        source: state.g.sourceMapFilename
+      });
+      state.g.sourceLine++;
+      state.g.bufferLine++;
+    }
+    // offset for the last piece
+    if (sourceLines.length > 1) {
+      state.g.sourceLine++;
+      state.g.bufferLine++;
+      state.g.sourceColumn = 0;
+      state.g.bufferColumn = 0;
+    }
+    state.g.sourceColumn += sourceLines[sourceLines.length - 1].length;
+    state.g.bufferColumn +=
+      transformedLines[transformedLines.length - 1].length;
+  }
+  state.g.buffer +=
+    contentTransformer ? contentTransformer(transformed) : transformed;
+  state.g.position = end;
+}
+
+/**
+ * Returns original source for an AST node.
+ * @param {object} node
+ * @param {object} state
+ * @return {string}
+ */
+function getNodeSourceText(node, state) {
+  return state.g.source.substring(node.range[0], node.range[1]);
+}
+
+function _replaceNonWhite(value) {
+  return value.replace(nonWhiteRegexp, ' ');
+}
+
+/**
+ * Removes all non-whitespace characters
+ */
+function _stripNonWhite(value) {
+  return value.replace(nonWhiteRegexp, '');
+}
+
+/**
+ * Finds the position of the next instance of the specified syntactic char in
+ * the pending source.
+ *
+ * NOTE: This will skip instances of the specified char if they sit inside a
+ *       comment body.
+ *
+ * NOTE: This function also assumes that the buffer's current position is not
+ *       already within a comment or a string. This is rarely the case since all
+ *       of the buffer-advancement utility methods tend to be used on syntactic
+ *       nodes' range values -- but it's a small gotcha that's worth mentioning.
+ */
+function getNextSyntacticCharOffset(char, state) {
+  var pendingSource = state.g.source.substring(state.g.position);
+  var pendingSourceLines = pendingSource.split('\n');
+
+  var charOffset = 0;
+  var line;
+  var withinBlockComment = false;
+  var withinString = false;
+  lineLoop: while ((line = pendingSourceLines.shift()) !== undefined) {
+    var lineEndPos = charOffset + line.length;
+    charLoop: for (; charOffset < lineEndPos; charOffset++) {
+      var currChar = pendingSource[charOffset];
+      if (currChar === '"' || currChar === '\'') {
+        withinString = !withinString;
+        continue charLoop;
+      } else if (withinString) {
+        continue charLoop;
+      } else if (charOffset + 1 < lineEndPos) {
+        var nextTwoChars = currChar + line[charOffset + 1];
+        if (nextTwoChars === '//') {
+          charOffset = lineEndPos + 1;
+          continue lineLoop;
+        } else if (nextTwoChars === '/*') {
+          withinBlockComment = true;
+          charOffset += 1;
+          continue charLoop;
+        } else if (nextTwoChars === '*/') {
+          withinBlockComment = false;
+          charOffset += 1;
+          continue charLoop;
+        }
+      }
+
+      if (!withinBlockComment && currChar === char) {
+        return charOffset + state.g.position;
+      }
+    }
+
+    // Account for '\n'
+    charOffset++;
+    withinString = false;
+  }
+
+  throw new Error('`' + char + '` not found!');
+}
+
+/**
+ * Catches up as `catchup` but replaces non-whitespace chars with spaces.
+ */
+function catchupWhiteOut(end, state) {
+  catchup(end, state, _replaceNonWhite);
+}
+
+/**
+ * Catches up as `catchup` but removes all non-whitespace characters.
+ */
+function catchupWhiteSpace(end, state) {
+  catchup(end, state, _stripNonWhite);
+}
+
+/**
+ * Removes all non-newline characters
+ */
+var reNonNewline = /[^\n]/g;
+function stripNonNewline(value) {
+  return value.replace(reNonNewline, function() {
+    return '';
+  });
+}
+
+/**
+ * Catches up as `catchup` but removes all non-newline characters.
+ *
+ * Equivalent to appending as many newlines as there are in the original source
+ * between the current position and `end`.
+ */
+function catchupNewlines(end, state) {
+  catchup(end, state, stripNonNewline);
+}
+
+
+/**
+ * Same as catchup but does not touch the buffer
+ *
+ * @param  {number} end
+ * @param  {object} state
+ */
+function move(end, state) {
+  // move the internal cursors
+  if (state.g.sourceMap) {
+    if (end < state.g.position) {
+      state.g.position = 0;
+      state.g.sourceLine = 1;
+      state.g.sourceColumn = 0;
+    }
+
+    var source = state.g.source.substring(state.g.position, end);
+    var sourceLines = source.split('\n');
+    if (sourceLines.length > 1) {
+      state.g.sourceLine += sourceLines.length - 1;
+      state.g.sourceColumn = 0;
+    }
+    state.g.sourceColumn += sourceLines[sourceLines.length - 1].length;
+  }
+  state.g.position = end;
+}
+
+/**
+ * Appends a string of text to the buffer
+ *
+ * @param {string} str
+ * @param {object} state
+ */
+function append(str, state) {
+  if (state.g.sourceMap && str) {
+    state.g.sourceMap.addMapping({
+      generated: { line: state.g.bufferLine, column: state.g.bufferColumn },
+      original: { line: state.g.sourceLine, column: state.g.sourceColumn },
+      source: state.g.sourceMapFilename
+    });
+    var transformedLines = str.split('\n');
+    if (transformedLines.length > 1) {
+      state.g.bufferLine += transformedLines.length - 1;
+      state.g.bufferColumn = 0;
+    }
+    state.g.bufferColumn +=
+      transformedLines[transformedLines.length - 1].length;
+  }
+  state.g.buffer += str;
+}
+
+/**
+ * Update indent using state.indentBy property. Indent is measured in
+ * double spaces. Updates a single line only.
+ *
+ * @param {string} str
+ * @param {object} state
+ * @return {string}
+ */
+function updateIndent(str, state) {
+  /*jshint -W004*/
+  var indentBy = state.indentBy;
+  if (indentBy < 0) {
+    for (var i = 0; i < -indentBy; i++) {
+      str = str.replace(leadingIndentRegexp, '$1');
+    }
+  } else {
+    for (var i = 0; i < indentBy; i++) {
+      str = str.replace(leadingIndentRegexp, '$1$2$2');
+    }
+  }
+  return str;
+}
+
+/**
+ * Calculates indent from the beginning of the line until "start" or the first
+ * character before start.
+ * @example
+ *   "  foo.bar()"
+ *         ^
+ *       start
+ *   indent will be "  "
+ *
+ * @param  {number} start
+ * @param  {object} state
+ * @return {string}
+ */
+function indentBefore(start, state) {
+  var end = start;
+  start = start - 1;
+
+  while (start > 0 && state.g.source[start] != '\n') {
+    if (!state.g.source[start].match(/[ \t]/)) {
+      end = start;
+    }
+    start--;
+  }
+  return state.g.source.substring(start + 1, end);
+}
+
+function getDocblock(state) {
+  if (!state.g.docblock) {
+    var docblock = _dereq_('./docblock');
+    state.g.docblock =
+      docblock.parseAsObject(docblock.extract(state.g.source));
+  }
+  return state.g.docblock;
+}
+
+function identWithinLexicalScope(identName, state, stopBeforeNode) {
+  var currScope = state.localScope;
+  while (currScope) {
+    if (currScope.identifiers[identName] !== undefined) {
+      return true;
+    }
+
+    if (stopBeforeNode && currScope.parentNode === stopBeforeNode) {
+      break;
+    }
+
+    currScope = currScope.parentScope;
+  }
+  return false;
+}
+
+function identInLocalScope(identName, state) {
+  return state.localScope.identifiers[identName] !== undefined;
+}
+
+/**
+ * @param {object} boundaryNode
+ * @param {?array} path
+ * @return {?object} node
+ */
+function initScopeMetadata(boundaryNode, path, node) {
+  return {
+    boundaryNode: boundaryNode,
+    bindingPath: path,
+    bindingNode: node
+  };
+}
+
+function declareIdentInLocalScope(identName, metaData, state) {
+  state.localScope.identifiers[identName] = {
+    boundaryNode: metaData.boundaryNode,
+    path: metaData.bindingPath,
+    node: metaData.bindingNode,
+    state: Object.create(state)
+  };
+}
+
+function getLexicalBindingMetadata(identName, state) {
+  var currScope = state.localScope;
+  while (currScope) {
+    if (currScope.identifiers[identName] !== undefined) {
+      return currScope.identifiers[identName];
+    }
+
+    currScope = currScope.parentScope;
+  }
+}
+
+function getLocalBindingMetadata(identName, state) {
+  return state.localScope.identifiers[identName];
+}
+
+/**
+ * Apply the given analyzer function to the current node. If the analyzer
+ * doesn't return false, traverse each child of the current node using the given
+ * traverser function.
+ *
+ * @param {function} analyzer
+ * @param {function} traverser
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function analyzeAndTraverse(analyzer, traverser, node, path, state) {
+  if (node.type) {
+    if (analyzer(node, path, state) === false) {
+      return;
+    }
+    path.unshift(node);
+  }
+
+  getOrderedChildren(node).forEach(function(child) {
+    traverser(child, path, state);
+  });
+
+  node.type && path.shift();
+}
+
+/**
+ * It is crucial that we traverse in order, or else catchup() on a later
+ * node that is processed out of order can move the buffer past a node
+ * that we haven't handled yet, preventing us from modifying that node.
+ *
+ * This can happen when a node has multiple properties containing children.
+ * For example, XJSElement nodes have `openingElement`, `closingElement` and
+ * `children`. If we traverse `openingElement`, then `closingElement`, then
+ * when we get to `children`, the buffer has already caught up to the end of
+ * the closing element, after the children.
+ *
+ * This is basically a Schwartzian transform. Collects an array of children,
+ * each one represented as [child, startIndex]; sorts the array by start
+ * index; then traverses the children in that order.
+ */
+function getOrderedChildren(node) {
+  var queue = [];
+  for (var key in node) {
+    if (node.hasOwnProperty(key)) {
+      enqueueNodeWithStartIndex(queue, node[key]);
+    }
+  }
+  queue.sort(function(a, b) { return a[1] - b[1]; });
+  return queue.map(function(pair) { return pair[0]; });
+}
+
+/**
+ * Helper function for analyzeAndTraverse which queues up all of the children
+ * of the given node.
+ *
+ * Children can also be found in arrays, so we basically want to merge all of
+ * those arrays together so we can sort them and then traverse the children
+ * in order.
+ *
+ * One example is the Program node. It contains `body` and `comments`, both
+ * arrays. Lexographically, comments are interspersed throughout the body
+ * nodes, but esprima's AST groups them together.
+ */
+function enqueueNodeWithStartIndex(queue, node) {
+  if (typeof node !== 'object' || node === null) {
+    return;
+  }
+  if (node.range) {
+    queue.push([node, node.range[0]]);
+  } else if (Array.isArray(node)) {
+    for (var ii = 0; ii < node.length; ii++) {
+      enqueueNodeWithStartIndex(queue, node[ii]);
+    }
+  }
+}
+
+/**
+ * Checks whether a node or any of its sub-nodes contains
+ * a syntactic construct of the passed type.
+ * @param {object} node - AST node to test.
+ * @param {string} type - node type to lookup.
+ */
+function containsChildOfType(node, type) {
+  return containsChildMatching(node, function(node) {
+    return node.type === type;
+  });
+}
+
+function containsChildMatching(node, matcher) {
+  var foundMatchingChild = false;
+  function nodeTypeAnalyzer(node) {
+    if (matcher(node) === true) {
+      foundMatchingChild = true;
+      return false;
+    }
+  }
+  function nodeTypeTraverser(child, path, state) {
+    if (!foundMatchingChild) {
+      foundMatchingChild = containsChildMatching(child, matcher);
+    }
+  }
+  analyzeAndTraverse(
+    nodeTypeAnalyzer,
+    nodeTypeTraverser,
+    node,
+    []
+  );
+  return foundMatchingChild;
+}
+
+var scopeTypes = {};
+scopeTypes[Syntax.ArrowFunctionExpression] = true;
+scopeTypes[Syntax.FunctionExpression] = true;
+scopeTypes[Syntax.FunctionDeclaration] = true;
+scopeTypes[Syntax.Program] = true;
+
+function getBoundaryNode(path) {
+  for (var ii = 0; ii < path.length; ++ii) {
+    if (scopeTypes[path[ii].type]) {
+      return path[ii];
+    }
+  }
+  throw new Error(
+    'Expected to find a node with one of the following types in path:\n' +
+    JSON.stringify(Object.keys(scopeTypes))
+  );
+}
+
+function getTempVar(tempVarIndex) {
+  return '$__' + tempVarIndex;
+}
+
+function injectTempVar(state) {
+  var tempVar = '$__' + (state.localScope.tempVarIndex++);
+  state.localScope.tempVars.push(tempVar);
+  return tempVar;
+}
+
+function injectTempVarDeclarations(state, index) {
+  if (state.localScope.tempVars.length) {
+    state.g.buffer =
+      state.g.buffer.slice(0, index) +
+      'var ' + state.localScope.tempVars.join(', ') + ';' +
+      state.g.buffer.slice(index);
+    state.localScope.tempVars = [];
+  }
+}
+
+exports.analyzeAndTraverse = analyzeAndTraverse;
+exports.append = append;
+exports.catchup = catchup;
+exports.catchupNewlines = catchupNewlines;
+exports.catchupWhiteOut = catchupWhiteOut;
+exports.catchupWhiteSpace = catchupWhiteSpace;
+exports.containsChildMatching = containsChildMatching;
+exports.containsChildOfType = containsChildOfType;
+exports.createState = createState;
+exports.declareIdentInLocalScope = declareIdentInLocalScope;
+exports.getBoundaryNode = getBoundaryNode;
+exports.getDocblock = getDocblock;
+exports.getLexicalBindingMetadata = getLexicalBindingMetadata;
+exports.getLocalBindingMetadata = getLocalBindingMetadata;
+exports.getNextSyntacticCharOffset = getNextSyntacticCharOffset;
+exports.getNodeSourceText = getNodeSourceText;
+exports.getOrderedChildren = getOrderedChildren;
+exports.getTempVar = getTempVar;
+exports.identInLocalScope = identInLocalScope;
+exports.identWithinLexicalScope = identWithinLexicalScope;
+exports.indentBefore = indentBefore;
+exports.initScopeMetadata = initScopeMetadata;
+exports.injectTempVar = injectTempVar;
+exports.injectTempVarDeclarations = injectTempVarDeclarations;
+exports.move = move;
+exports.scopeTypes = scopeTypes;
+exports.updateIndent = updateIndent;
+exports.updateState = updateState;
+
+},{"./docblock":21,"esprima-fb":9}],24:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*global exports:true*/
+
+/**
+ * Desugars ES6 Arrow functions to ES3 function expressions.
+ * If the function contains `this` expression -- automatically
+ * binds the function to current value of `this`.
+ *
+ * Single parameter, simple expression:
+ *
+ * [1, 2, 3].map(x => x * x);
+ *
+ * [1, 2, 3].map(function(x) { return x * x; });
+ *
+ * Several parameters, complex block:
+ *
+ * this.users.forEach((user, idx) => {
+ *   return this.isActive(idx) && this.send(user);
+ * });
+ *
+ * this.users.forEach(function(user, idx) {
+ *   return this.isActive(idx) && this.send(user);
+ * }.bind(this));
+ *
+ */
+var restParamVisitors = _dereq_('./es6-rest-param-visitors');
+var destructuringVisitors = _dereq_('./es6-destructuring-visitors');
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+/**
+ * @public
+ */
+function visitArrowFunction(traverse, node, path, state) {
+  var notInExpression = (path[0].type === Syntax.ExpressionStatement);
+
+  // Wrap a function into a grouping operator, if it's not
+  // in the expression position.
+  if (notInExpression) {
+    utils.append('(', state);
+  }
+
+  utils.append('function', state);
+  renderParams(traverse, node, path, state);
+
+  // Skip arrow.
+  utils.catchupWhiteSpace(node.body.range[0], state);
+
+  var renderBody = node.body.type == Syntax.BlockStatement
+    ? renderStatementBody
+    : renderExpressionBody;
+
+  path.unshift(node);
+  renderBody(traverse, node, path, state);
+  path.shift();
+
+  // Bind the function only if `this` value is used
+  // inside it or inside any sub-expression.
+  var containsBindingSyntax =
+    utils.containsChildMatching(node.body, function(node) {
+      return node.type === Syntax.ThisExpression
+             || (node.type === Syntax.Identifier
+                 && node.name === "super");
+    });
+
+  if (containsBindingSyntax) {
+    utils.append('.bind(this)', state);
+  }
+
+  utils.catchupWhiteSpace(node.range[1], state);
+
+  // Close wrapper if not in the expression.
+  if (notInExpression) {
+    utils.append(')', state);
+  }
+
+  return false;
+}
+
+function renderParams(traverse, node, path, state) {
+  // To preserve inline typechecking directives, we
+  // distinguish between parens-free and paranthesized single param.
+  if (isParensFreeSingleParam(node, state) || !node.params.length) {
+    utils.append('(', state);
+  }
+  if (node.params.length !== 0) {
+    path.unshift(node);
+    traverse(node.params, path, state);
+    path.unshift();
+  }
+  utils.append(')', state);
+}
+
+function isParensFreeSingleParam(node, state) {
+  return node.params.length === 1 &&
+    state.g.source[state.g.position] !== '(';
+}
+
+function renderExpressionBody(traverse, node, path, state) {
+  // Wrap simple expression bodies into a block
+  // with explicit return statement.
+  utils.append('{', state);
+
+  // Special handling of rest param.
+  if (node.rest) {
+    utils.append(
+      restParamVisitors.renderRestParamSetup(node, state),
+      state
+    );
+  }
+
+  // Special handling of destructured params.
+  destructuringVisitors.renderDestructuredComponents(
+    node,
+    utils.updateState(state, {
+      localScope: {
+        parentNode: state.parentNode,
+        parentScope: state.parentScope,
+        identifiers: state.identifiers,
+        tempVarIndex: 0
+      }
+    })
+  );
+
+  utils.append('return ', state);
+  renderStatementBody(traverse, node, path, state);
+  utils.append(';}', state);
+}
+
+function renderStatementBody(traverse, node, path, state) {
+  traverse(node.body, path, state);
+  utils.catchup(node.body.range[1], state);
+}
+
+visitArrowFunction.test = function(node, path, state) {
+  return node.type === Syntax.ArrowFunctionExpression;
+};
+
+exports.visitorList = [
+  visitArrowFunction
+];
+
+
+},{"../src/utils":23,"./es6-destructuring-visitors":27,"./es6-rest-param-visitors":30,"esprima-fb":9}],25:[function(_dereq_,module,exports){
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+/*global exports:true*/
+
+/**
+ * Implements ES6 call spread.
+ *
+ * instance.method(a, b, c, ...d)
+ *
+ * instance.method.apply(instance, [a, b, c].concat(d))
+ *
+ */
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+function process(traverse, node, path, state) {
+  utils.move(node.range[0], state);
+  traverse(node, path, state);
+  utils.catchup(node.range[1], state);
+}
+
+function visitCallSpread(traverse, node, path, state) {
+  utils.catchup(node.range[0], state);
+
+  if (node.type === Syntax.NewExpression) {
+    // Input  = new Set(1, 2, ...list)
+    // Output = new (Function.prototype.bind.apply(Set, [null, 1, 2].concat(list)))
+    utils.append('new (Function.prototype.bind.apply(', state);
+    process(traverse, node.callee, path, state);
+  } else if (node.callee.type === Syntax.MemberExpression) {
+    // Input  = get().fn(1, 2, ...more)
+    // Output = (_ = get()).fn.apply(_, [1, 2].apply(more))
+    var tempVar = utils.injectTempVar(state);
+    utils.append('(' + tempVar + ' = ', state);
+    process(traverse, node.callee.object, path, state);
+    utils.append(')', state);
+    if (node.callee.property.type === Syntax.Identifier) {
+      utils.append('.', state);
+      process(traverse, node.callee.property, path, state);
+    } else {
+      utils.append('[', state);
+      process(traverse, node.callee.property, path, state);
+      utils.append(']', state);
+    }
+    utils.append('.apply(' + tempVar, state);
+  } else {
+    // Input  = max(1, 2, ...list)
+    // Output = max.apply(null, [1, 2].concat(list))
+    var needsToBeWrappedInParenthesis =
+      node.callee.type === Syntax.FunctionDeclaration ||
+      node.callee.type === Syntax.FunctionExpression;
+    if (needsToBeWrappedInParenthesis) {
+      utils.append('(', state);
+    }
+    process(traverse, node.callee, path, state);
+    if (needsToBeWrappedInParenthesis) {
+      utils.append(')', state);
+    }
+    utils.append('.apply(null', state);
+  }
+  utils.append(', ', state);
+
+  var args = node.arguments.slice();
+  var spread = args.pop();
+  if (args.length || node.type === Syntax.NewExpression) {
+    utils.append('[', state);
+    if (node.type === Syntax.NewExpression) {
+      utils.append('null' + (args.length ? ', ' : ''), state);
+    }
+    while (args.length) {
+      var arg = args.shift();
+      utils.move(arg.range[0], state);
+      traverse(arg, path, state);
+      if (args.length) {
+        utils.catchup(args[0].range[0], state);
+      } else {
+        utils.catchup(arg.range[1], state);
+      }
+    }
+    utils.append('].concat(', state);
+    process(traverse, spread.argument, path, state);
+    utils.append(')', state);
+  } else {
+    process(traverse, spread.argument, path, state);
+  }
+  utils.append(node.type === Syntax.NewExpression ? '))' : ')', state);
+
+  utils.move(node.range[1], state);
+  return false;
+}
+
+visitCallSpread.test = function(node, path, state) {
+  return (
+    (
+      node.type === Syntax.CallExpression ||
+      node.type === Syntax.NewExpression
+    ) &&
+    node.arguments.length > 0 &&
+    node.arguments[node.arguments.length - 1].type === Syntax.SpreadElement
+  );
+};
+
+exports.visitorList = [
+  visitCallSpread
+];
+
+},{"../src/utils":23,"esprima-fb":9}],26:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*jslint node:true*/
+
+/**
+ * @typechecks
+ */
+'use strict';
+
+var base62 = _dereq_('base62');
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+var reservedWordsHelper = _dereq_('./reserved-words-helper');
+
+var declareIdentInLocalScope = utils.declareIdentInLocalScope;
+var initScopeMetadata = utils.initScopeMetadata;
+
+var SUPER_PROTO_IDENT_PREFIX = '____SuperProtoOf';
+
+var _anonClassUUIDCounter = 0;
+var _mungedSymbolMaps = {};
+
+function resetSymbols() {
+  _anonClassUUIDCounter = 0;
+  _mungedSymbolMaps = {};
+}
+
+/**
+ * Used to generate a unique class for use with code-gens for anonymous class
+ * expressions.
+ *
+ * @param {object} state
+ * @return {string}
+ */
+function _generateAnonymousClassName(state) {
+  var mungeNamespace = state.mungeNamespace || '';
+  return '____Class' + mungeNamespace + base62.encode(_anonClassUUIDCounter++);
+}
+
+/**
+ * Given an identifier name, munge it using the current state's mungeNamespace.
+ *
+ * @param {string} identName
+ * @param {object} state
+ * @return {string}
+ */
+function _getMungedName(identName, state) {
+  var mungeNamespace = state.mungeNamespace;
+  var shouldMinify = state.g.opts.minify;
+
+  if (shouldMinify) {
+    if (!_mungedSymbolMaps[mungeNamespace]) {
+      _mungedSymbolMaps[mungeNamespace] = {
+        symbolMap: {},
+        identUUIDCounter: 0
+      };
+    }
+
+    var symbolMap = _mungedSymbolMaps[mungeNamespace].symbolMap;
+    if (!symbolMap[identName]) {
+      symbolMap[identName] =
+        base62.encode(_mungedSymbolMaps[mungeNamespace].identUUIDCounter++);
+    }
+    identName = symbolMap[identName];
+  }
+  return '$' + mungeNamespace + identName;
+}
+
+/**
+ * Extracts super class information from a class node.
+ *
+ * Information includes name of the super class and/or the expression string
+ * (if extending from an expression)
+ *
+ * @param {object} node
+ * @param {object} state
+ * @return {object}
+ */
+function _getSuperClassInfo(node, state) {
+  var ret = {
+    name: null,
+    expression: null
+  };
+  if (node.superClass) {
+    if (node.superClass.type === Syntax.Identifier) {
+      ret.name = node.superClass.name;
+    } else {
+      // Extension from an expression
+      ret.name = _generateAnonymousClassName(state);
+      ret.expression = state.g.source.substring(
+        node.superClass.range[0],
+        node.superClass.range[1]
+      );
+    }
+  }
+  return ret;
+}
+
+/**
+ * Used with .filter() to find the constructor method in a list of
+ * MethodDefinition nodes.
+ *
+ * @param {object} classElement
+ * @return {boolean}
+ */
+function _isConstructorMethod(classElement) {
+  return classElement.type === Syntax.MethodDefinition &&
+         classElement.key.type === Syntax.Identifier &&
+         classElement.key.name === 'constructor';
+}
+
+/**
+ * @param {object} node
+ * @param {object} state
+ * @return {boolean}
+ */
+function _shouldMungeIdentifier(node, state) {
+  return (
+    !!state.methodFuncNode &&
+    !utils.getDocblock(state).hasOwnProperty('preventMunge') &&
+    /^_(?!_)/.test(node.name)
+  );
+}
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitClassMethod(traverse, node, path, state) {
+  if (!state.g.opts.es5 && (node.kind === 'get' || node.kind === 'set')) {
+    throw new Error(
+      'This transform does not support ' + node.kind + 'ter methods for ES6 ' +
+      'classes. (line: ' + node.loc.start.line + ', col: ' +
+      node.loc.start.column + ')'
+    );
+  }
+  state = utils.updateState(state, {
+    methodNode: node
+  });
+  utils.catchup(node.range[0], state);
+  path.unshift(node);
+  traverse(node.value, path, state);
+  path.shift();
+  return false;
+}
+visitClassMethod.test = function(node, path, state) {
+  return node.type === Syntax.MethodDefinition;
+};
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitClassFunctionExpression(traverse, node, path, state) {
+  var methodNode = path[0];
+  var isGetter = methodNode.kind === 'get';
+  var isSetter = methodNode.kind === 'set';
+
+  state = utils.updateState(state, {
+    methodFuncNode: node
+  });
+
+  if (methodNode.key.name === 'constructor') {
+    utils.append('function ' + state.className, state);
+  } else {
+    var methodAccessorComputed = false;
+    var methodAccessor;
+    var prototypeOrStatic = methodNode["static"] ? '' : '.prototype';
+    var objectAccessor = state.className + prototypeOrStatic;
+
+    if (methodNode.key.type === Syntax.Identifier) {
+      // foo() {}
+      methodAccessor = methodNode.key.name;
+      if (_shouldMungeIdentifier(methodNode.key, state)) {
+        methodAccessor = _getMungedName(methodAccessor, state);
+      }
+      if (isGetter || isSetter) {
+        methodAccessor = JSON.stringify(methodAccessor);
+      } else if (reservedWordsHelper.isReservedWord(methodAccessor)) {
+        methodAccessorComputed = true;
+        methodAccessor = JSON.stringify(methodAccessor);
+      }
+    } else if (methodNode.key.type === Syntax.Literal) {
+      // 'foo bar'() {}  | get 'foo bar'() {} | set 'foo bar'() {}
+      methodAccessor = JSON.stringify(methodNode.key.value);
+      methodAccessorComputed = true;
+    }
+
+    if (isSetter || isGetter) {
+      utils.append(
+        'Object.defineProperty(' +
+          objectAccessor + ',' +
+          methodAccessor + ',' +
+          '{configurable:true,' +
+          methodNode.kind + ':function',
+        state
+      );
+    } else {
+      if (state.g.opts.es3) {
+        if (methodAccessorComputed) {
+          methodAccessor = '[' + methodAccessor + ']';
+        } else {
+          methodAccessor = '.' + methodAccessor;
+        }
+        utils.append(
+          objectAccessor +
+          methodAccessor + '=function' + (node.generator ? '*' : ''),
+          state
+        );
+      } else {
+        if (!methodAccessorComputed) {
+          methodAccessor = JSON.stringify(methodAccessor);
+        }
+        utils.append(
+          'Object.defineProperty(' +
+            objectAccessor + ',' +
+            methodAccessor + ',' +
+            '{writable:true,configurable:true,' +
+            'value:function' + (node.generator ? '*' : ''),
+          state
+        );
+      }
+    }
+  }
+  utils.move(methodNode.key.range[1], state);
+  utils.append('(', state);
+
+  var params = node.params;
+  if (params.length > 0) {
+    utils.catchupNewlines(params[0].range[0], state);
+    for (var i = 0; i < params.length; i++) {
+      utils.catchup(node.params[i].range[0], state);
+      path.unshift(node);
+      traverse(params[i], path, state);
+      path.shift();
+    }
+  }
+
+  var closingParenPosition = utils.getNextSyntacticCharOffset(')', state);
+  utils.catchupWhiteSpace(closingParenPosition, state);
+
+  var openingBracketPosition = utils.getNextSyntacticCharOffset('{', state);
+  utils.catchup(openingBracketPosition + 1, state);
+
+  if (!state.scopeIsStrict) {
+    utils.append('"use strict";', state);
+    state = utils.updateState(state, {
+      scopeIsStrict: true
+    });
+  }
+  utils.move(node.body.range[0] + '{'.length, state);
+
+  path.unshift(node);
+  traverse(node.body, path, state);
+  path.shift();
+  utils.catchup(node.body.range[1], state);
+
+  if (methodNode.key.name !== 'constructor') {
+    if (isGetter || isSetter || !state.g.opts.es3) {
+      utils.append('})', state);
+    }
+    utils.append(';', state);
+  }
+  return false;
+}
+visitClassFunctionExpression.test = function(node, path, state) {
+  return node.type === Syntax.FunctionExpression
+         && path[0].type === Syntax.MethodDefinition;
+};
+
+function visitClassMethodParam(traverse, node, path, state) {
+  var paramName = node.name;
+  if (_shouldMungeIdentifier(node, state)) {
+    paramName = _getMungedName(node.name, state);
+  }
+  utils.append(paramName, state);
+  utils.move(node.range[1], state);
+}
+visitClassMethodParam.test = function(node, path, state) {
+  if (!path[0] || !path[1]) {
+    return;
+  }
+
+  var parentFuncExpr = path[0];
+  var parentClassMethod = path[1];
+
+  return parentFuncExpr.type === Syntax.FunctionExpression
+         && parentClassMethod.type === Syntax.MethodDefinition
+         && node.type === Syntax.Identifier;
+};
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function _renderClassBody(traverse, node, path, state) {
+  var className = state.className;
+  var superClass = state.superClass;
+
+  // Set up prototype of constructor on same line as `extends` for line-number
+  // preservation. This relies on function-hoisting if a constructor function is
+  // defined in the class body.
+  if (superClass.name) {
+    // If the super class is an expression, we need to memoize the output of the
+    // expression into the generated class name variable and use that to refer
+    // to the super class going forward. Example:
+    //
+    //   class Foo extends mixin(Bar, Baz) {}
+    //     --transforms to--
+    //   function Foo() {} var ____Class0Blah = mixin(Bar, Baz);
+    if (superClass.expression !== null) {
+      utils.append(
+        'var ' + superClass.name + '=' + superClass.expression + ';',
+        state
+      );
+    }
+
+    var keyName = superClass.name + '____Key';
+    var keyNameDeclarator = '';
+    if (!utils.identWithinLexicalScope(keyName, state)) {
+      keyNameDeclarator = 'var ';
+      declareIdentInLocalScope(keyName, initScopeMetadata(node), state);
+    }
+    utils.append(
+      'for(' + keyNameDeclarator + keyName + ' in ' + superClass.name + '){' +
+        'if(' + superClass.name + '.hasOwnProperty(' + keyName + ')){' +
+          className + '[' + keyName + ']=' +
+            superClass.name + '[' + keyName + '];' +
+        '}' +
+      '}',
+      state
+    );
+
+    var superProtoIdentStr = SUPER_PROTO_IDENT_PREFIX + superClass.name;
+    if (!utils.identWithinLexicalScope(superProtoIdentStr, state)) {
+      utils.append(
+        'var ' + superProtoIdentStr + '=' + superClass.name + '===null?' +
+        'null:' + superClass.name + '.prototype;',
+        state
+      );
+      declareIdentInLocalScope(superProtoIdentStr, initScopeMetadata(node), state);
+    }
+
+    utils.append(
+      className + '.prototype=Object.create(' + superProtoIdentStr + ');',
+      state
+    );
+    utils.append(
+      className + '.prototype.constructor=' + className + ';',
+      state
+    );
+    utils.append(
+      className + '.__superConstructor__=' + superClass.name + ';',
+      state
+    );
+  }
+
+  // If there's no constructor method specified in the class body, create an
+  // empty constructor function at the top (same line as the class keyword)
+  if (!node.body.body.filter(_isConstructorMethod).pop()) {
+    utils.append('function ' + className + '(){', state);
+    if (!state.scopeIsStrict) {
+      utils.append('"use strict";', state);
+    }
+    if (superClass.name) {
+      utils.append(
+        'if(' + superClass.name + '!==null){' +
+        superClass.name + '.apply(this,arguments);}',
+        state
+      );
+    }
+    utils.append('}', state);
+  }
+
+  utils.move(node.body.range[0] + '{'.length, state);
+  traverse(node.body, path, state);
+  utils.catchupWhiteSpace(node.range[1], state);
+}
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitClassDeclaration(traverse, node, path, state) {
+  var className = node.id.name;
+  var superClass = _getSuperClassInfo(node, state);
+
+  state = utils.updateState(state, {
+    mungeNamespace: className,
+    className: className,
+    superClass: superClass
+  });
+
+  _renderClassBody(traverse, node, path, state);
+
+  return false;
+}
+visitClassDeclaration.test = function(node, path, state) {
+  return node.type === Syntax.ClassDeclaration;
+};
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitClassExpression(traverse, node, path, state) {
+  var className = node.id && node.id.name || _generateAnonymousClassName(state);
+  var superClass = _getSuperClassInfo(node, state);
+
+  utils.append('(function(){', state);
+
+  state = utils.updateState(state, {
+    mungeNamespace: className,
+    className: className,
+    superClass: superClass
+  });
+
+  _renderClassBody(traverse, node, path, state);
+
+  utils.append('return ' + className + ';})()', state);
+  return false;
+}
+visitClassExpression.test = function(node, path, state) {
+  return node.type === Syntax.ClassExpression;
+};
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitPrivateIdentifier(traverse, node, path, state) {
+  utils.append(_getMungedName(node.name, state), state);
+  utils.move(node.range[1], state);
+}
+visitPrivateIdentifier.test = function(node, path, state) {
+  if (node.type === Syntax.Identifier && _shouldMungeIdentifier(node, state)) {
+    // Always munge non-computed properties of MemberExpressions
+    // (a la preventing access of properties of unowned objects)
+    if (path[0].type === Syntax.MemberExpression && path[0].object !== node
+        && path[0].computed === false) {
+      return true;
+    }
+
+    // Always munge identifiers that were declared within the method function
+    // scope
+    if (utils.identWithinLexicalScope(node.name, state, state.methodFuncNode)) {
+      return true;
+    }
+
+    // Always munge private keys on object literals defined within a method's
+    // scope.
+    if (path[0].type === Syntax.Property
+        && path[1].type === Syntax.ObjectExpression) {
+      return true;
+    }
+
+    // Always munge function parameters
+    if (path[0].type === Syntax.FunctionExpression
+        || path[0].type === Syntax.FunctionDeclaration
+        || path[0].type === Syntax.ArrowFunctionExpression) {
+      for (var i = 0; i < path[0].params.length; i++) {
+        if (path[0].params[i] === node) {
+          return true;
+        }
+      }
+    }
+  }
+  return false;
+};
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitSuperCallExpression(traverse, node, path, state) {
+  var superClassName = state.superClass.name;
+
+  if (node.callee.type === Syntax.Identifier) {
+    if (_isConstructorMethod(state.methodNode)) {
+      utils.append(superClassName + '.call(', state);
+    } else {
+      var protoProp = SUPER_PROTO_IDENT_PREFIX + superClassName;
+      if (state.methodNode.key.type === Syntax.Identifier) {
+        protoProp += '.' + state.methodNode.key.name;
+      } else if (state.methodNode.key.type === Syntax.Literal) {
+        protoProp += '[' + JSON.stringify(state.methodNode.key.value) + ']';
+      }
+      utils.append(protoProp + ".call(", state);
+    }
+    utils.move(node.callee.range[1], state);
+  } else if (node.callee.type === Syntax.MemberExpression) {
+    utils.append(SUPER_PROTO_IDENT_PREFIX + superClassName, state);
+    utils.move(node.callee.object.range[1], state);
+
+    if (node.callee.computed) {
+      // ["a" + "b"]
+      utils.catchup(node.callee.property.range[1] + ']'.length, state);
+    } else {
+      // .ab
+      utils.append('.' + node.callee.property.name, state);
+    }
+
+    utils.append('.call(', state);
+    utils.move(node.callee.range[1], state);
+  }
+
+  utils.append('this', state);
+  if (node.arguments.length > 0) {
+    utils.append(',', state);
+    utils.catchupWhiteSpace(node.arguments[0].range[0], state);
+    traverse(node.arguments, path, state);
+  }
+
+  utils.catchupWhiteSpace(node.range[1], state);
+  utils.append(')', state);
+  return false;
+}
+visitSuperCallExpression.test = function(node, path, state) {
+  if (state.superClass && node.type === Syntax.CallExpression) {
+    var callee = node.callee;
+    if (callee.type === Syntax.Identifier && callee.name === 'super'
+        || callee.type == Syntax.MemberExpression
+           && callee.object.name === 'super') {
+      return true;
+    }
+  }
+  return false;
+};
+
+/**
+ * @param {function} traverse
+ * @param {object} node
+ * @param {array} path
+ * @param {object} state
+ */
+function visitSuperMemberExpression(traverse, node, path, state) {
+  var superClassName = state.superClass.name;
+
+  utils.append(SUPER_PROTO_IDENT_PREFIX + superClassName, state);
+  utils.move(node.object.range[1], state);
+}
+visitSuperMemberExpression.test = function(node, path, state) {
+  return state.superClass
+         && node.type === Syntax.MemberExpression
+         && node.object.type === Syntax.Identifier
+         && node.object.name === 'super';
+};
+
+exports.resetSymbols = resetSymbols;
+
+exports.visitorList = [
+  visitClassDeclaration,
+  visitClassExpression,
+  visitClassFunctionExpression,
+  visitClassMethod,
+  visitClassMethodParam,
+  visitPrivateIdentifier,
+  visitSuperCallExpression,
+  visitSuperMemberExpression
+];
+
+},{"../src/utils":23,"./reserved-words-helper":34,"base62":10,"esprima-fb":9}],27:[function(_dereq_,module,exports){
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*global exports:true*/
+
+/**
+ * Implements ES6 destructuring assignment and pattern matchng.
+ *
+ * function init({port, ip, coords: [x, y]}) {
+ *   return (x && y) ? {id, port} : {ip};
+ * };
+ *
+ * function init($__0) {
+ *   var
+ *    port = $__0.port,
+ *    ip = $__0.ip,
+ *    $__1 = $__0.coords,
+ *    x = $__1[0],
+ *    y = $__1[1];
+ *   return (x && y) ? {id, port} : {ip};
+ * }
+ *
+ * var x, {ip, port} = init({ip, port});
+ *
+ * var x, $__0 = init({ip, port}), ip = $__0.ip, port = $__0.port;
+ *
+ */
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+var reservedWordsHelper = _dereq_('./reserved-words-helper');
+var restParamVisitors = _dereq_('./es6-rest-param-visitors');
+var restPropertyHelpers = _dereq_('./es7-rest-property-helpers');
+
+// -------------------------------------------------------
+// 1. Structured variable declarations.
+//
+// var [a, b] = [b, a];
+// var {x, y} = {y, x};
+// -------------------------------------------------------
+
+function visitStructuredVariable(traverse, node, path, state) {
+  // Allocate new temp for the pattern.
+  utils.append(utils.getTempVar(state.localScope.tempVarIndex) + '=', state);
+  // Skip the pattern and assign the init to the temp.
+  utils.catchupWhiteSpace(node.init.range[0], state);
+  traverse(node.init, path, state);
+  utils.catchup(node.init.range[1], state);
+  // Render the destructured data.
+  utils.append(',' + getDestructuredComponents(node.id, state), state);
+  state.localScope.tempVarIndex++;
+  return false;
+}
+
+visitStructuredVariable.test = function(node, path, state) {
+  return node.type === Syntax.VariableDeclarator &&
+    isStructuredPattern(node.id);
+};
+
+function isStructuredPattern(node) {
+  return node.type === Syntax.ObjectPattern ||
+    node.type === Syntax.ArrayPattern;
+}
+
+// Main function which does actual recursive destructuring
+// of nested complex structures.
+function getDestructuredComponents(node, state) {
+  var tmpIndex = state.localScope.tempVarIndex;
+  var components = [];
+  var patternItems = getPatternItems(node);
+
+  for (var idx = 0; idx < patternItems.length; idx++) {
+    var item = patternItems[idx];
+    if (!item) {
+      continue;
+    }
+
+    if (item.type === Syntax.SpreadElement) {
+      // Spread/rest of an array.
+      // TODO(dmitrys): support spread in the middle of a pattern
+      // and also for function param patterns: [x, ...xs, y]
+      components.push(item.argument.name +
+        '=Array.prototype.slice.call(' +
+        utils.getTempVar(tmpIndex) + ',' + idx + ')'
+      );
+      continue;
+    }
+
+    if (item.type === Syntax.SpreadProperty) {
+      var restExpression = restPropertyHelpers.renderRestExpression(
+        utils.getTempVar(tmpIndex),
+        patternItems
+      );
+      components.push(item.argument.name + '=' + restExpression);
+      continue;
+    }
+
+    // Depending on pattern type (Array or Object), we get
+    // corresponding pattern item parts.
+    var accessor = getPatternItemAccessor(node, item, tmpIndex, idx);
+    var value = getPatternItemValue(node, item);
+
+    // TODO(dmitrys): implement default values: {x, y=5}
+    if (value.type === Syntax.Identifier) {
+      // Simple pattern item.
+      components.push(value.name + '=' + accessor);
+    } else {
+      // Complex sub-structure.
+      components.push(
+        utils.getTempVar(++state.localScope.tempVarIndex) + '=' + accessor +
+        ',' + getDestructuredComponents(value, state)
+      );
+    }
+  }
+
+  return components.join(',');
+}
+
+function getPatternItems(node) {
+  return node.properties || node.elements;
+}
+
+function getPatternItemAccessor(node, patternItem, tmpIndex, idx) {
+  var tmpName = utils.getTempVar(tmpIndex);
+  if (node.type === Syntax.ObjectPattern) {
+    if (reservedWordsHelper.isReservedWord(patternItem.key.name)) {
+      return tmpName + '["' + patternItem.key.name + '"]';
+    } else if (patternItem.key.type === Syntax.Literal) {
+      return tmpName + '[' + JSON.stringify(patternItem.key.value) + ']';
+    } else if (patternItem.key.type === Syntax.Identifier) {
+      return tmpName + '.' + patternItem.key.name;
+    }
+  } else if (node.type === Syntax.ArrayPattern) {
+    return tmpName + '[' + idx + ']';
+  }
+}
+
+function getPatternItemValue(node, patternItem) {
+  return node.type === Syntax.ObjectPattern
+    ? patternItem.value
+    : patternItem;
+}
+
+// -------------------------------------------------------
+// 2. Assignment expression.
+//
+// [a, b] = [b, a];
+// ({x, y} = {y, x});
+// -------------------------------------------------------
+
+function visitStructuredAssignment(traverse, node, path, state) {
+  var exprNode = node.expression;
+  utils.append('var ' + utils.getTempVar(state.localScope.tempVarIndex) + '=', state);
+
+  utils.catchupWhiteSpace(exprNode.right.range[0], state);
+  traverse(exprNode.right, path, state);
+  utils.catchup(exprNode.right.range[1], state);
+
+  utils.append(
+    ';' + getDestructuredComponents(exprNode.left, state) + ';',
+    state
+  );
+
+  utils.catchupWhiteSpace(node.range[1], state);
+  state.localScope.tempVarIndex++;
+  return false;
+}
+
+visitStructuredAssignment.test = function(node, path, state) {
+  // We consider the expression statement rather than just assignment
+  // expression to cover case with object patters which should be
+  // wrapped in grouping operator: ({x, y} = {y, x});
+  return node.type === Syntax.ExpressionStatement &&
+    node.expression.type === Syntax.AssignmentExpression &&
+    isStructuredPattern(node.expression.left);
+};
+
+// -------------------------------------------------------
+// 3. Structured parameter.
+//
+// function foo({x, y}) { ... }
+// -------------------------------------------------------
+
+function visitStructuredParameter(traverse, node, path, state) {
+  utils.append(utils.getTempVar(getParamIndex(node, path)), state);
+  utils.catchupWhiteSpace(node.range[1], state);
+  return true;
+}
+
+function getParamIndex(paramNode, path) {
+  var funcNode = path[0];
+  var tmpIndex = 0;
+  for (var k = 0; k < funcNode.params.length; k++) {
+    var param = funcNode.params[k];
+    if (param === paramNode) {
+      break;
+    }
+    if (isStructuredPattern(param)) {
+      tmpIndex++;
+    }
+  }
+  return tmpIndex;
+}
+
+visitStructuredParameter.test = function(node, path, state) {
+  return isStructuredPattern(node) && isFunctionNode(path[0]);
+};
+
+function isFunctionNode(node) {
+  return (node.type == Syntax.FunctionDeclaration ||
+    node.type == Syntax.FunctionExpression ||
+    node.type == Syntax.MethodDefinition ||
+    node.type == Syntax.ArrowFunctionExpression);
+}
+
+// -------------------------------------------------------
+// 4. Function body for structured parameters.
+//
+// function foo({x, y}) { x; y; }
+// -------------------------------------------------------
+
+function visitFunctionBodyForStructuredParameter(traverse, node, path, state) {
+  var funcNode = path[0];
+
+  utils.catchup(funcNode.body.range[0] + 1, state);
+  renderDestructuredComponents(funcNode, state);
+
+  if (funcNode.rest) {
+    utils.append(
+      restParamVisitors.renderRestParamSetup(funcNode, state),
+      state
+    );
+  }
+
+  return true;
+}
+
+function renderDestructuredComponents(funcNode, state) {
+  var destructuredComponents = [];
+
+  for (var k = 0; k < funcNode.params.length; k++) {
+    var param = funcNode.params[k];
+    if (isStructuredPattern(param)) {
+      destructuredComponents.push(
+        getDestructuredComponents(param, state)
+      );
+      state.localScope.tempVarIndex++;
+    }
+  }
+
+  if (destructuredComponents.length) {
+    utils.append('var ' + destructuredComponents.join(',') + ';', state);
+  }
+}
+
+visitFunctionBodyForStructuredParameter.test = function(node, path, state) {
+  return node.type === Syntax.BlockStatement && isFunctionNode(path[0]);
+};
+
+exports.visitorList = [
+  visitStructuredVariable,
+  visitStructuredAssignment,
+  visitStructuredParameter,
+  visitFunctionBodyForStructuredParameter
+];
+
+exports.renderDestructuredComponents = renderDestructuredComponents;
+
+
+},{"../src/utils":23,"./es6-rest-param-visitors":30,"./es7-rest-property-helpers":32,"./reserved-words-helper":34,"esprima-fb":9}],28:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*jslint node:true*/
+
+/**
+ * Desugars concise methods of objects to function expressions.
+ *
+ * var foo = {
+ *   method(x, y) { ... }
+ * };
+ *
+ * var foo = {
+ *   method: function(x, y) { ... }
+ * };
+ *
+ */
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+var reservedWordsHelper = _dereq_('./reserved-words-helper');
+
+function visitObjectConciseMethod(traverse, node, path, state) {
+  var isGenerator = node.value.generator;
+  if (isGenerator) {
+    utils.catchupWhiteSpace(node.range[0] + 1, state);
+  }
+  if (node.computed) { // [<expr>]() { ...}
+    utils.catchup(node.key.range[1] + 1, state);
+  } else if (reservedWordsHelper.isReservedWord(node.key.name)) {
+    utils.catchup(node.key.range[0], state);
+    utils.append('"', state);
+    utils.catchup(node.key.range[1], state);
+    utils.append('"', state);
+  }
+
+  utils.catchup(node.key.range[1], state);
+  utils.append(
+    ':function' + (isGenerator ? '*' : ''),
+    state
+  );
+  path.unshift(node);
+  traverse(node.value, path, state);
+  path.shift();
+  return false;
+}
+
+visitObjectConciseMethod.test = function(node, path, state) {
+  return node.type === Syntax.Property &&
+    node.value.type === Syntax.FunctionExpression &&
+    node.method === true;
+};
+
+exports.visitorList = [
+  visitObjectConciseMethod
+];
+
+},{"../src/utils":23,"./reserved-words-helper":34,"esprima-fb":9}],29:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*jslint node: true*/
+
+/**
+ * Desugars ES6 Object Literal short notations into ES3 full notation.
+ *
+ * // Easier return values.
+ * function foo(x, y) {
+ *   return {x, y}; // {x: x, y: y}
+ * };
+ *
+ * // Destructuring.
+ * function init({port, ip, coords: {x, y}}) { ... }
+ *
+ */
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+/**
+ * @public
+ */
+function visitObjectLiteralShortNotation(traverse, node, path, state) {
+  utils.catchup(node.key.range[1], state);
+  utils.append(':' + node.key.name, state);
+  return false;
+}
+
+visitObjectLiteralShortNotation.test = function(node, path, state) {
+  return node.type === Syntax.Property &&
+    node.kind === 'init' &&
+    node.shorthand === true &&
+    path[0].type !== Syntax.ObjectPattern;
+};
+
+exports.visitorList = [
+  visitObjectLiteralShortNotation
+];
+
+
+},{"../src/utils":23,"esprima-fb":9}],30:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*jslint node:true*/
+
+/**
+ * Desugars ES6 rest parameters into an ES3 arguments array.
+ *
+ * function printf(template, ...args) {
+ *   args.forEach(...);
+ * }
+ *
+ * We could use `Array.prototype.slice.call`, but that usage of arguments causes
+ * functions to be deoptimized in V8, so instead we use a for-loop.
+ *
+ * function printf(template) {
+ *   for (var args = [], $__0 = 1, $__1 = arguments.length; $__0 < $__1; $__0++)
+ *     args.push(arguments[$__0]);
+ *   args.forEach(...);
+ * }
+ *
+ */
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+
+
+function _nodeIsFunctionWithRestParam(node) {
+  return (node.type === Syntax.FunctionDeclaration
+          || node.type === Syntax.FunctionExpression
+          || node.type === Syntax.ArrowFunctionExpression)
+         && node.rest;
+}
+
+function visitFunctionParamsWithRestParam(traverse, node, path, state) {
+  if (node.parametricType) {
+    utils.catchup(node.parametricType.range[0], state);
+    path.unshift(node);
+    traverse(node.parametricType, path, state);
+    path.shift();
+  }
+
+  // Render params.
+  if (node.params.length) {
+    path.unshift(node);
+    traverse(node.params, path, state);
+    path.shift();
+  } else {
+    // -3 is for ... of the rest.
+    utils.catchup(node.rest.range[0] - 3, state);
+  }
+  utils.catchupWhiteSpace(node.rest.range[1], state);
+
+  path.unshift(node);
+  traverse(node.body, path, state);
+  path.shift();
+
+  return false;
+}
+
+visitFunctionParamsWithRestParam.test = function(node, path, state) {
+  return _nodeIsFunctionWithRestParam(node);
+};
+
+function renderRestParamSetup(functionNode, state) {
+  var idx = state.localScope.tempVarIndex++;
+  var len = state.localScope.tempVarIndex++;
+
+  return 'for (var ' + functionNode.rest.name + '=[],' +
+    utils.getTempVar(idx) + '=' + functionNode.params.length + ',' +
+    utils.getTempVar(len) + '=arguments.length;' +
+    utils.getTempVar(idx) + '<' +  utils.getTempVar(len) + ';' +
+    utils.getTempVar(idx) + '++) ' +
+    functionNode.rest.name + '.push(arguments[' + utils.getTempVar(idx) + ']);';
+}
+
+function visitFunctionBodyWithRestParam(traverse, node, path, state) {
+  utils.catchup(node.range[0] + 1, state);
+  var parentNode = path[0];
+  utils.append(renderRestParamSetup(parentNode, state), state);
+  return true;
+}
+
+visitFunctionBodyWithRestParam.test = function(node, path, state) {
+  return node.type === Syntax.BlockStatement
+         && _nodeIsFunctionWithRestParam(path[0]);
+};
+
+exports.renderRestParamSetup = renderRestParamSetup;
+exports.visitorList = [
+  visitFunctionParamsWithRestParam,
+  visitFunctionBodyWithRestParam
+];
+
+},{"../src/utils":23,"esprima-fb":9}],31:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*jslint node:true*/
+
+/**
+ * @typechecks
+ */
+'use strict';
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+/**
+ * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-12.1.9
+ */
+function visitTemplateLiteral(traverse, node, path, state) {
+  var templateElements = node.quasis;
+
+  utils.append('(', state);
+  for (var ii = 0; ii < templateElements.length; ii++) {
+    var templateElement = templateElements[ii];
+    if (templateElement.value.raw !== '') {
+      utils.append(getCookedValue(templateElement), state);
+      if (!templateElement.tail) {
+        // + between element and substitution
+        utils.append(' + ', state);
+      }
+      // maintain line numbers
+      utils.move(templateElement.range[0], state);
+      utils.catchupNewlines(templateElement.range[1], state);
+    } else {  // templateElement.value.raw === ''
+      // Concatenat adjacent substitutions, e.g. `${x}${y}`. Empty templates
+      // appear before the first and after the last element - nothing to add in
+      // those cases.
+      if (ii > 0 && !templateElement.tail) {
+        // + between substitution and substitution
+        utils.append(' + ', state);
+      }
+    }
+
+    utils.move(templateElement.range[1], state);
+    if (!templateElement.tail) {
+      var substitution = node.expressions[ii];
+      if (substitution.type === Syntax.Identifier ||
+          substitution.type === Syntax.MemberExpression ||
+          substitution.type === Syntax.CallExpression) {
+        utils.catchup(substitution.range[1], state);
+      } else {
+        utils.append('(', state);
+        traverse(substitution, path, state);
+        utils.catchup(substitution.range[1], state);
+        utils.append(')', state);
+      }
+      // if next templateElement isn't empty...
+      if (templateElements[ii + 1].value.cooked !== '') {
+        utils.append(' + ', state);
+      }
+    }
+  }
+  utils.move(node.range[1], state);
+  utils.append(')', state);
+  return false;
+}
+
+visitTemplateLiteral.test = function(node, path, state) {
+  return node.type === Syntax.TemplateLiteral;
+};
+
+/**
+ * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-12.2.6
+ */
+function visitTaggedTemplateExpression(traverse, node, path, state) {
+  var template = node.quasi;
+  var numQuasis = template.quasis.length;
+
+  // print the tag
+  utils.move(node.tag.range[0], state);
+  traverse(node.tag, path, state);
+  utils.catchup(node.tag.range[1], state);
+
+  // print array of template elements
+  utils.append('(function() { var siteObj = [', state);
+  for (var ii = 0; ii < numQuasis; ii++) {
+    utils.append(getCookedValue(template.quasis[ii]), state);
+    if (ii !== numQuasis - 1) {
+      utils.append(', ', state);
+    }
+  }
+  utils.append(']; siteObj.raw = [', state);
+  for (ii = 0; ii < numQuasis; ii++) {
+    utils.append(getRawValue(template.quasis[ii]), state);
+    if (ii !== numQuasis - 1) {
+      utils.append(', ', state);
+    }
+  }
+  utils.append(
+    ']; Object.freeze(siteObj.raw); Object.freeze(siteObj); return siteObj; }()',
+    state
+  );
+
+  // print substitutions
+  if (numQuasis > 1) {
+    for (ii = 0; ii < template.expressions.length; ii++) {
+      var expression = template.expressions[ii];
+      utils.append(', ', state);
+
+      // maintain line numbers by calling catchupWhiteSpace over the whole
+      // previous TemplateElement
+      utils.move(template.quasis[ii].range[0], state);
+      utils.catchupNewlines(template.quasis[ii].range[1], state);
+
+      utils.move(expression.range[0], state);
+      traverse(expression, path, state);
+      utils.catchup(expression.range[1], state);
+    }
+  }
+
+  // print blank lines to push the closing ) down to account for the final
+  // TemplateElement.
+  utils.catchupNewlines(node.range[1], state);
+
+  utils.append(')', state);
+
+  return false;
+}
+
+visitTaggedTemplateExpression.test = function(node, path, state) {
+  return node.type === Syntax.TaggedTemplateExpression;
+};
+
+function getCookedValue(templateElement) {
+  return JSON.stringify(templateElement.value.cooked);
+}
+
+function getRawValue(templateElement) {
+  return JSON.stringify(templateElement.value.raw);
+}
+
+exports.visitorList = [
+  visitTemplateLiteral,
+  visitTaggedTemplateExpression
+];
+
+},{"../src/utils":23,"esprima-fb":9}],32:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*jslint node:true*/
+
+/**
+ * Desugars ES7 rest properties into ES5 object iteration.
+ */
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+
+// TODO: This is a pretty massive helper, it should only be defined once, in the
+// transform's runtime environment. We don't currently have a runtime though.
+var restFunction =
+  '(function(source, exclusion) {' +
+    'var rest = {};' +
+    'var hasOwn = Object.prototype.hasOwnProperty;' +
+    'if (source == null) {' +
+      'throw new TypeError();' +
+    '}' +
+    'for (var key in source) {' +
+      'if (hasOwn.call(source, key) && !hasOwn.call(exclusion, key)) {' +
+        'rest[key] = source[key];' +
+      '}' +
+    '}' +
+    'return rest;' +
+  '})';
+
+function getPropertyNames(properties) {
+  var names = [];
+  for (var i = 0; i < properties.length; i++) {
+    var property = properties[i];
+    if (property.type === Syntax.SpreadProperty) {
+      continue;
+    }
+    if (property.type === Syntax.Identifier) {
+      names.push(property.name);
+    } else {
+      names.push(property.key.name);
+    }
+  }
+  return names;
+}
+
+function getRestFunctionCall(source, exclusion) {
+  return restFunction + '(' + source + ',' + exclusion + ')';
+}
+
+function getSimpleShallowCopy(accessorExpression) {
+  // This could be faster with 'Object.assign({}, ' + accessorExpression + ')'
+  // but to unify code paths and avoid a ES6 dependency we use the same
+  // helper as for the exclusion case.
+  return getRestFunctionCall(accessorExpression, '{}');
+}
+
+function renderRestExpression(accessorExpression, excludedProperties) {
+  var excludedNames = getPropertyNames(excludedProperties);
+  if (!excludedNames.length) {
+    return getSimpleShallowCopy(accessorExpression);
+  }
+  return getRestFunctionCall(
+    accessorExpression,
+    '{' + excludedNames.join(':1,') + ':1}'
+  );
+}
+
+exports.renderRestExpression = renderRestExpression;
+
+},{"esprima-fb":9}],33:[function(_dereq_,module,exports){
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+/*global exports:true*/
+
+/**
+ * Implements ES7 object spread property.
+ * https://gist.github.com/sebmarkbage/aa849c7973cb4452c547
+ *
+ * { ...a, x: 1 }
+ *
+ * Object.assign({}, a, {x: 1 })
+ *
+ */
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+
+function visitObjectLiteralSpread(traverse, node, path, state) {
+  utils.catchup(node.range[0], state);
+
+  utils.append('Object.assign({', state);
+
+  // Skip the original {
+  utils.move(node.range[0] + 1, state);
+
+  var previousWasSpread = false;
+
+  for (var i = 0; i < node.properties.length; i++) {
+    var property = node.properties[i];
+    if (property.type === Syntax.SpreadProperty) {
+
+      // Close the previous object or initial object
+      if (!previousWasSpread) {
+        utils.append('}', state);
+      }
+
+      if (i === 0) {
+        // Normally there will be a comma when we catch up, but not before
+        // the first property.
+        utils.append(',', state);
+      }
+
+      utils.catchup(property.range[0], state);
+
+      // skip ...
+      utils.move(property.range[0] + 3, state);
+
+      traverse(property.argument, path, state);
+
+      utils.catchup(property.range[1], state);
+
+      previousWasSpread = true;
+
+    } else {
+
+      utils.catchup(property.range[0], state);
+
+      if (previousWasSpread) {
+        utils.append('{', state);
+      }
+
+      traverse(property, path, state);
+
+      utils.catchup(property.range[1], state);
+
+      previousWasSpread = false;
+
+    }
+  }
+
+  // Strip any non-whitespace between the last item and the end.
+  // We only catch up on whitespace so that we ignore any trailing commas which
+  // are stripped out for IE8 support. Unfortunately, this also strips out any
+  // trailing comments.
+  utils.catchupWhiteSpace(node.range[1] - 1, state);
+
+  // Skip the trailing }
+  utils.move(node.range[1], state);
+
+  if (!previousWasSpread) {
+    utils.append('}', state);
+  }
+
+  utils.append(')', state);
+  return false;
+}
+
+visitObjectLiteralSpread.test = function(node, path, state) {
+  if (node.type !== Syntax.ObjectExpression) {
+    return false;
+  }
+  // Tight loop optimization
+  var hasAtLeastOneSpreadProperty = false;
+  for (var i = 0; i < node.properties.length; i++) {
+    var property = node.properties[i];
+    if (property.type === Syntax.SpreadProperty) {
+      hasAtLeastOneSpreadProperty = true;
+    } else if (property.kind !== 'init') {
+      return false;
+    }
+  }
+  return hasAtLeastOneSpreadProperty;
+};
+
+exports.visitorList = [
+  visitObjectLiteralSpread
+];
+
+},{"../src/utils":23,"esprima-fb":9}],34:[function(_dereq_,module,exports){
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var KEYWORDS = [
+  'break', 'do', 'in', 'typeof', 'case', 'else', 'instanceof', 'var', 'catch',
+  'export', 'new', 'void', 'class', 'extends', 'return', 'while', 'const',
+  'finally', 'super', 'with', 'continue', 'for', 'switch', 'yield', 'debugger',
+  'function', 'this', 'default', 'if', 'throw', 'delete', 'import', 'try'
+];
+
+var FUTURE_RESERVED_WORDS = [
+  'enum', 'await', 'implements', 'package', 'protected', 'static', 'interface',
+  'private', 'public'
+];
+
+var LITERALS = [
+  'null',
+  'true',
+  'false'
+];
+
+// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-reserved-words
+var RESERVED_WORDS = [].concat(
+  KEYWORDS,
+  FUTURE_RESERVED_WORDS,
+  LITERALS
+);
+
+var reservedWordsMap = Object.create(null);
+RESERVED_WORDS.forEach(function(k) {
+    reservedWordsMap[k] = true;
+});
+
+/**
+ * This list should not grow as new reserved words are introdued. This list is
+ * of words that need to be quoted because ES3-ish browsers do not allow their
+ * use as identifier names.
+ */
+var ES3_FUTURE_RESERVED_WORDS = [
+  'enum', 'implements', 'package', 'protected', 'static', 'interface',
+  'private', 'public'
+];
+
+var ES3_RESERVED_WORDS = [].concat(
+  KEYWORDS,
+  ES3_FUTURE_RESERVED_WORDS,
+  LITERALS
+);
+
+var es3ReservedWordsMap = Object.create(null);
+ES3_RESERVED_WORDS.forEach(function(k) {
+    es3ReservedWordsMap[k] = true;
+});
+
+exports.isReservedWord = function(word) {
+  return !!reservedWordsMap[word];
+};
+
+exports.isES3ReservedWord = function(word) {
+  return !!es3ReservedWordsMap[word];
+};
+
+},{}],35:[function(_dereq_,module,exports){
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+/*global exports:true*/
+
+var Syntax = _dereq_('esprima-fb').Syntax;
+var utils = _dereq_('../src/utils');
+var reserverdWordsHelper = _dereq_('./reserved-words-helper');
+
+/**
+ * Code adapted from https://github.com/spicyj/es3ify
+ * The MIT License (MIT)
+ * Copyright (c) 2014 Ben Alpert
+ */
+
+function visitProperty(traverse, node, path, state) {
+  utils.catchup(node.key.range[0], state);
+  utils.append('"', state);
+  utils.catchup(node.key.range[1], state);
+  utils.append('"', state);
+  utils.catchup(node.value.range[0], state);
+  traverse(node.value, path, state);
+  return false;
+}
+
+visitProperty.test = function(node) {
+  return node.type === Syntax.Property &&
+    node.key.type === Syntax.Identifier &&
+    !node.method &&
+    !node.shorthand &&
+    !node.computed &&
+    reserverdWordsHelper.isES3ReservedWord(node.key.name);
+};
+
+function visitMemberExpression(traverse, node, path, state) {
+  traverse(node.object, path, state);
+  utils.catchup(node.property.range[0] - 1, state);
+  utils.append('[', state);
+  utils.catchupWhiteSpace(node.property.range[0], state);
+  utils.append('"', state);
+  utils.catchup(node.property.range[1], state);
+  utils.append('"]', state);
+  return false;
+}
+
+visitMemberExpression.test = function(node) {
+  return node.type === Syntax.MemberExpression &&
+    node.property.type === Syntax.Identifier &&
+    reserverdWordsHelper.isES3ReservedWord(node.property.name);
+};
+
+exports.visitorList = [
+  visitProperty,
+  visitMemberExpression
+];
+
+},{"../src/utils":23,"./reserved-words-helper":34,"esprima-fb":9}],36:[function(_dereq_,module,exports){
+var esprima = _dereq_('esprima-fb');
+var utils = _dereq_('../src/utils');
+
+var Syntax = esprima.Syntax;
+
+function _isFunctionNode(node) {
+  return node.type === Syntax.FunctionDeclaration
+         || node.type === Syntax.FunctionExpression
+         || node.type === Syntax.ArrowFunctionExpression;
+}
+
+function visitClassProperty(traverse, node, path, state) {
+  utils.catchup(node.range[0], state);
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitClassProperty.test = function(node, path, state) {
+  return node.type === Syntax.ClassProperty;
+};
+
+function visitTypeAlias(traverse, node, path, state) {
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitTypeAlias.test = function(node, path, state) {
+  return node.type === Syntax.TypeAlias;
+};
+
+function visitTypeCast(traverse, node, path, state) {
+  path.unshift(node);
+  traverse(node.expression, path, state);
+  path.shift();
+
+  utils.catchup(node.typeAnnotation.range[0], state);
+  utils.catchupWhiteOut(node.typeAnnotation.range[1], state);
+  return false;
+}
+visitTypeCast.test = function(node, path, state) {
+  return node.type === Syntax.TypeCastExpression;
+};
+
+function visitInterfaceDeclaration(traverse, node, path, state) {
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitInterfaceDeclaration.test = function(node, path, state) {
+  return node.type === Syntax.InterfaceDeclaration;
+};
+
+function visitDeclare(traverse, node, path, state) {
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitDeclare.test = function(node, path, state) {
+  switch (node.type) {
+    case Syntax.DeclareVariable:
+    case Syntax.DeclareFunction:
+    case Syntax.DeclareClass:
+    case Syntax.DeclareModule:
+      return true;
+  }
+  return false;
+};
+
+function visitFunctionParametricAnnotation(traverse, node, path, state) {
+  utils.catchup(node.range[0], state);
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitFunctionParametricAnnotation.test = function(node, path, state) {
+  return node.type === Syntax.TypeParameterDeclaration
+         && path[0]
+         && _isFunctionNode(path[0])
+         && node === path[0].typeParameters;
+};
+
+function visitFunctionReturnAnnotation(traverse, node, path, state) {
+  utils.catchup(node.range[0], state);
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitFunctionReturnAnnotation.test = function(node, path, state) {
+  return path[0] && _isFunctionNode(path[0]) && node === path[0].returnType;
+};
+
+function visitOptionalFunctionParameterAnnotation(traverse, node, path, state) {
+  utils.catchup(node.range[0] + node.name.length, state);
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitOptionalFunctionParameterAnnotation.test = function(node, path, state) {
+  return node.type === Syntax.Identifier
+         && node.optional
+         && path[0]
+         && _isFunctionNode(path[0]);
+};
+
+function visitTypeAnnotatedIdentifier(traverse, node, path, state) {
+  utils.catchup(node.typeAnnotation.range[0], state);
+  utils.catchupWhiteOut(node.typeAnnotation.range[1], state);
+  return false;
+}
+visitTypeAnnotatedIdentifier.test = function(node, path, state) {
+  return node.type === Syntax.Identifier && node.typeAnnotation;
+};
+
+function visitTypeAnnotatedObjectOrArrayPattern(traverse, node, path, state) {
+  utils.catchup(node.typeAnnotation.range[0], state);
+  utils.catchupWhiteOut(node.typeAnnotation.range[1], state);
+  return false;
+}
+visitTypeAnnotatedObjectOrArrayPattern.test = function(node, path, state) {
+  var rightType = node.type === Syntax.ObjectPattern
+                || node.type === Syntax.ArrayPattern;
+  return rightType && node.typeAnnotation;
+};
+
+/**
+ * Methods cause trouble, since esprima parses them as a key/value pair, where
+ * the location of the value starts at the method body. For example
+ * { bar(x:number,...y:Array<number>):number {} }
+ * is parsed as
+ * { bar: function(x: number, ...y:Array<number>): number {} }
+ * except that the location of the FunctionExpression value is 40-something,
+ * which is the location of the function body. This means that by the time we
+ * visit the params, rest param, and return type organically, we've already
+ * catchup()'d passed them.
+ */
+function visitMethod(traverse, node, path, state) {
+  path.unshift(node);
+  traverse(node.key, path, state);
+
+  path.unshift(node.value);
+  traverse(node.value.params, path, state);
+  node.value.rest && traverse(node.value.rest, path, state);
+  node.value.returnType && traverse(node.value.returnType, path, state);
+  traverse(node.value.body, path, state);
+
+  path.shift();
+
+  path.shift();
+  return false;
+}
+
+visitMethod.test = function(node, path, state) {
+  return (node.type === "Property" && (node.method || node.kind === "set" || node.kind === "get"))
+      || (node.type === "MethodDefinition");
+};
+
+function visitImportType(traverse, node, path, state) {
+  utils.catchupWhiteOut(node.range[1], state);
+  return false;
+}
+visitImportType.test = function(node, path, state) {
+  return node.type === 'ImportDeclaration'
+         && node.isType;
+};
+
+exports.visitorList = [
+  visitClassProperty,
+  visitDeclare,
+  visitImportType,
+  visitInterfaceDeclaration,
+  visitFunctionParametricAnnotation,
+  visitFunctionReturnAnnotation,
+  visitMethod,
+  visitOptionalFunctionParameterAnnotation,
+  visitTypeAlias,
+  visitTypeCast,
+  visitTypeAnnotatedIdentifier,
+  visitTypeAnnotatedObjectOrArrayPattern
+];
+
+},{"../src/utils":23,"esprima-fb":9}],37:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+/*global exports:true*/
+'use strict';
+var Syntax = _dereq_('jstransform').Syntax;
+var utils = _dereq_('jstransform/src/utils');
+
+function renderJSXLiteral(object, isLast, state, start, end) {
+  var lines = object.value.split(/\r\n|\n|\r/);
+
+  if (start) {
+    utils.append(start, state);
+  }
+
+  var lastNonEmptyLine = 0;
+
+  lines.forEach(function(line, index) {
+    if (line.match(/[^ \t]/)) {
+      lastNonEmptyLine = index;
+    }
+  });
+
+  lines.forEach(function(line, index) {
+    var isFirstLine = index === 0;
+    var isLastLine = index === lines.length - 1;
+    var isLastNonEmptyLine = index === lastNonEmptyLine;
+
+    // replace rendered whitespace tabs with spaces
+    var trimmedLine = line.replace(/\t/g, ' ');
+
+    // trim whitespace touching a newline
+    if (!isFirstLine) {
+      trimmedLine = trimmedLine.replace(/^[ ]+/, '');
+    }
+    if (!isLastLine) {
+      trimmedLine = trimmedLine.replace(/[ ]+$/, '');
+    }
+
+    if (!isFirstLine) {
+      utils.append(line.match(/^[ \t]*/)[0], state);
+    }
+
+    if (trimmedLine || isLastNonEmptyLine) {
+      utils.append(
+        JSON.stringify(trimmedLine) +
+        (!isLastNonEmptyLine ? ' + \' \' +' : ''),
+        state);
+
+      if (isLastNonEmptyLine) {
+        if (end) {
+          utils.append(end, state);
+        }
+        if (!isLast) {
+          utils.append(', ', state);
+        }
+      }
+
+      // only restore tail whitespace if line had literals
+      if (trimmedLine && !isLastLine) {
+        utils.append(line.match(/[ \t]*$/)[0], state);
+      }
+    }
+
+    if (!isLastLine) {
+      utils.append('\n', state);
+    }
+  });
+
+  utils.move(object.range[1], state);
+}
+
+function renderJSXExpressionContainer(traverse, object, isLast, path, state) {
+  // Plus 1 to skip `{`.
+  utils.move(object.range[0] + 1, state);
+  utils.catchup(object.expression.range[0], state);
+  traverse(object.expression, path, state);
+
+  if (!isLast && object.expression.type !== Syntax.JSXEmptyExpression) {
+    // If we need to append a comma, make sure to do so after the expression.
+    utils.catchup(object.expression.range[1], state, trimLeft);
+    utils.append(', ', state);
+  }
+
+  // Minus 1 to skip `}`.
+  utils.catchup(object.range[1] - 1, state, trimLeft);
+  utils.move(object.range[1], state);
+  return false;
+}
+
+function quoteAttrName(attr) {
+  // Quote invalid JS identifiers.
+  if (!/^[a-z_$][a-z\d_$]*$/i.test(attr)) {
+    return '"' + attr + '"';
+  }
+  return attr;
+}
+
+function trimLeft(value) {
+  return value.replace(/^[ ]+/, '');
+}
+
+exports.renderJSXExpressionContainer = renderJSXExpressionContainer;
+exports.renderJSXLiteral = renderJSXLiteral;
+exports.quoteAttrName = quoteAttrName;
+exports.trimLeft = trimLeft;
+
+},{"jstransform":22,"jstransform/src/utils":23}],38:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+/*global exports:true*/
+'use strict';
+
+var Syntax = _dereq_('jstransform').Syntax;
+var utils = _dereq_('jstransform/src/utils');
+
+var renderJSXExpressionContainer =
+  _dereq_('./jsx').renderJSXExpressionContainer;
+var renderJSXLiteral = _dereq_('./jsx').renderJSXLiteral;
+var quoteAttrName = _dereq_('./jsx').quoteAttrName;
+
+var trimLeft = _dereq_('./jsx').trimLeft;
+
+/**
+ * Customized desugar processor for React JSX. Currently:
+ *
+ * <X> </X> => React.createElement(X, null)
+ * <X prop="1" /> => React.createElement(X, {prop: '1'}, null)
+ * <X prop="2"><Y /></X> => React.createElement(X, {prop:'2'},
+ *   React.createElement(Y, null)
+ * )
+ * <div /> => React.createElement("div", null)
+ */
+
+/**
+ * Removes all non-whitespace/parenthesis characters
+ */
+var reNonWhiteParen = /([^\s\(\)])/g;
+function stripNonWhiteParen(value) {
+  return value.replace(reNonWhiteParen, '');
+}
+
+var tagConvention = /^[a-z]|\-/;
+function isTagName(name) {
+  return tagConvention.test(name);
+}
+
+function visitReactTag(traverse, object, path, state) {
+  var openingElement = object.openingElement;
+  var nameObject = openingElement.name;
+  var attributesObject = openingElement.attributes;
+
+  utils.catchup(openingElement.range[0], state, trimLeft);
+
+  if (nameObject.type === Syntax.JSXNamespacedName && nameObject.namespace) {
+    throw new Error('Namespace tags are not supported. ReactJSX is not XML.');
+  }
+
+  // We assume that the React runtime is already in scope
+  utils.append('React.createElement(', state);
+
+  if (nameObject.type === Syntax.JSXIdentifier && isTagName(nameObject.name)) {
+    utils.append('"' + nameObject.name + '"', state);
+    utils.move(nameObject.range[1], state);
+  } else {
+    // Use utils.catchup in this case so we can easily handle
+    // JSXMemberExpressions which look like Foo.Bar.Baz. This also handles
+    // JSXIdentifiers that aren't fallback tags.
+    utils.move(nameObject.range[0], state);
+    utils.catchup(nameObject.range[1], state);
+  }
+
+  utils.append(', ', state);
+
+  var hasAttributes = attributesObject.length;
+
+  var hasAtLeastOneSpreadProperty = attributesObject.some(function(attr) {
+    return attr.type === Syntax.JSXSpreadAttribute;
+  });
+
+  // if we don't have any attributes, pass in null
+  if (hasAtLeastOneSpreadProperty) {
+    utils.append('React.__spread({', state);
+  } else if (hasAttributes) {
+    utils.append('{', state);
+  } else {
+    utils.append('null', state);
+  }
+
+  // keep track of if the previous attribute was a spread attribute
+  var previousWasSpread = false;
+
+  // write attributes
+  attributesObject.forEach(function(attr, index) {
+    var isLast = index === attributesObject.length - 1;
+
+    if (attr.type === Syntax.JSXSpreadAttribute) {
+      // Close the previous object or initial object
+      if (!previousWasSpread) {
+        utils.append('}, ', state);
+      }
+
+      // Move to the expression start, ignoring everything except parenthesis
+      // and whitespace.
+      utils.catchup(attr.range[0], state, stripNonWhiteParen);
+      // Plus 1 to skip `{`.
+      utils.move(attr.range[0] + 1, state);
+      utils.catchup(attr.argument.range[0], state, stripNonWhiteParen);
+
+      traverse(attr.argument, path, state);
+
+      utils.catchup(attr.argument.range[1], state);
+
+      // Move to the end, ignoring parenthesis and the closing `}`
+      utils.catchup(attr.range[1] - 1, state, stripNonWhiteParen);
+
+      if (!isLast) {
+        utils.append(', ', state);
+      }
+
+      utils.move(attr.range[1], state);
+
+      previousWasSpread = true;
+
+      return;
+    }
+
+    // If the next attribute is a spread, we're effective last in this object
+    if (!isLast) {
+      isLast = attributesObject[index + 1].type === Syntax.JSXSpreadAttribute;
+    }
+
+    if (attr.name.namespace) {
+      throw new Error(
+         'Namespace attributes are not supported. ReactJSX is not XML.');
+    }
+    var name = attr.name.name;
+
+    utils.catchup(attr.range[0], state, trimLeft);
+
+    if (previousWasSpread) {
+      utils.append('{', state);
+    }
+
+    utils.append(quoteAttrName(name), state);
+    utils.append(': ', state);
+
+    if (!attr.value) {
+      state.g.buffer += 'true';
+      state.g.position = attr.name.range[1];
+      if (!isLast) {
+        utils.append(', ', state);
+      }
+    } else {
+      utils.move(attr.name.range[1], state);
+      // Use catchupNewlines to skip over the '=' in the attribute
+      utils.catchupNewlines(attr.value.range[0], state);
+      if (attr.value.type === Syntax.Literal) {
+        renderJSXLiteral(attr.value, isLast, state);
+      } else {
+        renderJSXExpressionContainer(traverse, attr.value, isLast, path, state);
+      }
+    }
+
+    utils.catchup(attr.range[1], state, trimLeft);
+
+    previousWasSpread = false;
+
+  });
+
+  if (!openingElement.selfClosing) {
+    utils.catchup(openingElement.range[1] - 1, state, trimLeft);
+    utils.move(openingElement.range[1], state);
+  }
+
+  if (hasAttributes && !previousWasSpread) {
+    utils.append('}', state);
+  }
+
+  if (hasAtLeastOneSpreadProperty) {
+    utils.append(')', state);
+  }
+
+  // filter out whitespace
+  var childrenToRender = object.children.filter(function(child) {
+    return !(child.type === Syntax.Literal
+             && typeof child.value === 'string'
+             && child.value.match(/^[ \t]*[\r\n][ \t\r\n]*$/));
+  });
+  if (childrenToRender.length > 0) {
+    var lastRenderableIndex;
+
+    childrenToRender.forEach(function(child, index) {
+      if (child.type !== Syntax.JSXExpressionContainer ||
+          child.expression.type !== Syntax.JSXEmptyExpression) {
+        lastRenderableIndex = index;
+      }
+    });
+
+    if (lastRenderableIndex !== undefined) {
+      utils.append(', ', state);
+    }
+
+    childrenToRender.forEach(function(child, index) {
+      utils.catchup(child.range[0], state, trimLeft);
+
+      var isLast = index >= lastRenderableIndex;
+
+      if (child.type === Syntax.Literal) {
+        renderJSXLiteral(child, isLast, state);
+      } else if (child.type === Syntax.JSXExpressionContainer) {
+        renderJSXExpressionContainer(traverse, child, isLast, path, state);
+      } else {
+        traverse(child, path, state);
+        if (!isLast) {
+          utils.append(', ', state);
+        }
+      }
+
+      utils.catchup(child.range[1], state, trimLeft);
+    });
+  }
+
+  if (openingElement.selfClosing) {
+    // everything up to />
+    utils.catchup(openingElement.range[1] - 2, state, trimLeft);
+    utils.move(openingElement.range[1], state);
+  } else {
+    // everything up to </ sdflksjfd>
+    utils.catchup(object.closingElement.range[0], state, trimLeft);
+    utils.move(object.closingElement.range[1], state);
+  }
+
+  utils.append(')', state);
+  return false;
+}
+
+visitReactTag.test = function(object, path, state) {
+  return object.type === Syntax.JSXElement;
+};
+
+exports.visitorList = [
+  visitReactTag
+];
+
+},{"./jsx":37,"jstransform":22,"jstransform/src/utils":23}],39:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+/*global exports:true*/
+'use strict';
+
+var Syntax = _dereq_('jstransform').Syntax;
+var utils = _dereq_('jstransform/src/utils');
+
+function addDisplayName(displayName, object, state) {
+  if (object &&
+      object.type === Syntax.CallExpression &&
+      object.callee.type === Syntax.MemberExpression &&
+      object.callee.object.type === Syntax.Identifier &&
+      object.callee.object.name === 'React' &&
+      object.callee.property.type === Syntax.Identifier &&
+      object.callee.property.name === 'createClass' &&
+      object.arguments.length === 1 &&
+      object.arguments[0].type === Syntax.ObjectExpression) {
+    // Verify that the displayName property isn't already set
+    var properties = object.arguments[0].properties;
+    var safe = properties.every(function(property) {
+      var value = property.key.type === Syntax.Identifier ?
+        property.key.name :
+        property.key.value;
+      return value !== 'displayName';
+    });
+
+    if (safe) {
+      utils.catchup(object.arguments[0].range[0] + 1, state);
+      utils.append('displayName: "' + displayName + '",', state);
+    }
+  }
+}
+
+/**
+ * Transforms the following:
+ *
+ * var MyComponent = React.createClass({
+ *    render: ...
+ * });
+ *
+ * into:
+ *
+ * var MyComponent = React.createClass({
+ *    displayName: 'MyComponent',
+ *    render: ...
+ * });
+ *
+ * Also catches:
+ *
+ * MyComponent = React.createClass(...);
+ * exports.MyComponent = React.createClass(...);
+ * module.exports = {MyComponent: React.createClass(...)};
+ */
+function visitReactDisplayName(traverse, object, path, state) {
+  var left, right;
+
+  if (object.type === Syntax.AssignmentExpression) {
+    left = object.left;
+    right = object.right;
+  } else if (object.type === Syntax.Property) {
+    left = object.key;
+    right = object.value;
+  } else if (object.type === Syntax.VariableDeclarator) {
+    left = object.id;
+    right = object.init;
+  }
+
+  if (left && left.type === Syntax.MemberExpression) {
+    left = left.property;
+  }
+  if (left && left.type === Syntax.Identifier) {
+    addDisplayName(left.name, right, state);
+  }
+}
+
+visitReactDisplayName.test = function(object, path, state) {
+  return (
+    object.type === Syntax.AssignmentExpression ||
+    object.type === Syntax.Property ||
+    object.type === Syntax.VariableDeclarator
+  );
+};
+
+exports.visitorList = [
+  visitReactDisplayName
+];
+
+},{"jstransform":22,"jstransform/src/utils":23}],40:[function(_dereq_,module,exports){
+/*global exports:true*/
+
+'use strict';
+
+var es6ArrowFunctions =
+  _dereq_('jstransform/visitors/es6-arrow-function-visitors');
+var es6Classes = _dereq_('jstransform/visitors/es6-class-visitors');
+var es6Destructuring =
+  _dereq_('jstransform/visitors/es6-destructuring-visitors');
+var es6ObjectConciseMethod =
+  _dereq_('jstransform/visitors/es6-object-concise-method-visitors');
+var es6ObjectShortNotation =
+  _dereq_('jstransform/visitors/es6-object-short-notation-visitors');
+var es6RestParameters = _dereq_('jstransform/visitors/es6-rest-param-visitors');
+var es6Templates = _dereq_('jstransform/visitors/es6-template-visitors');
+var es6CallSpread =
+  _dereq_('jstransform/visitors/es6-call-spread-visitors');
+var es7SpreadProperty =
+  _dereq_('jstransform/visitors/es7-spread-property-visitors');
+var react = _dereq_('./transforms/react');
+var reactDisplayName = _dereq_('./transforms/reactDisplayName');
+var reservedWords = _dereq_('jstransform/visitors/reserved-words-visitors');
+
+/**
+ * Map from transformName => orderedListOfVisitors.
+ */
+var transformVisitors = {
+  'es6-arrow-functions': es6ArrowFunctions.visitorList,
+  'es6-classes': es6Classes.visitorList,
+  'es6-destructuring': es6Destructuring.visitorList,
+  'es6-object-concise-method': es6ObjectConciseMethod.visitorList,
+  'es6-object-short-notation': es6ObjectShortNotation.visitorList,
+  'es6-rest-params': es6RestParameters.visitorList,
+  'es6-templates': es6Templates.visitorList,
+  'es6-call-spread': es6CallSpread.visitorList,
+  'es7-spread-property': es7SpreadProperty.visitorList,
+  'react': react.visitorList.concat(reactDisplayName.visitorList),
+  'reserved-words': reservedWords.visitorList
+};
+
+var transformSets = {
+  'harmony': [
+    'es6-arrow-functions',
+    'es6-object-concise-method',
+    'es6-object-short-notation',
+    'es6-classes',
+    'es6-rest-params',
+    'es6-templates',
+    'es6-destructuring',
+    'es6-call-spread',
+    'es7-spread-property'
+  ],
+  'es3': [
+    'reserved-words'
+  ],
+  'react': [
+    'react'
+  ]
+};
+
+/**
+ * Specifies the order in which each transform should run.
+ */
+var transformRunOrder = [
+  'reserved-words',
+  'es6-arrow-functions',
+  'es6-object-concise-method',
+  'es6-object-short-notation',
+  'es6-classes',
+  'es6-rest-params',
+  'es6-templates',
+  'es6-destructuring',
+  'es6-call-spread',
+  'es7-spread-property',
+  'react'
+];
+
+/**
+ * Given a list of transform names, return the ordered list of visitors to be
+ * passed to the transform() function.
+ *
+ * @param {array?} excludes
+ * @return {array}
+ */
+function getAllVisitors(excludes) {
+  var ret = [];
+  for (var i = 0, il = transformRunOrder.length; i < il; i++) {
+    if (!excludes || excludes.indexOf(transformRunOrder[i]) === -1) {
+      ret = ret.concat(transformVisitors[transformRunOrder[i]]);
+    }
+  }
+  return ret;
+}
+
+/**
+ * Given a list of visitor set names, return the ordered list of visitors to be
+ * passed to jstransform.
+ *
+ * @param {array}
+ * @return {array}
+ */
+function getVisitorsBySet(sets) {
+  var visitorsToInclude = sets.reduce(function(visitors, set) {
+    if (!transformSets.hasOwnProperty(set)) {
+      throw new Error('Unknown visitor set: ' + set);
+    }
+    transformSets[set].forEach(function(visitor) {
+      visitors[visitor] = true;
+    });
+    return visitors;
+  }, {});
+
+  var visitorList = [];
+  for (var i = 0; i < transformRunOrder.length; i++) {
+    if (visitorsToInclude.hasOwnProperty(transformRunOrder[i])) {
+      visitorList = visitorList.concat(transformVisitors[transformRunOrder[i]]);
+    }
+  }
+
+  return visitorList;
+}
+
+exports.getVisitorsBySet = getVisitorsBySet;
+exports.getAllVisitors = getAllVisitors;
+exports.transformVisitors = transformVisitors;
+
+},{"./transforms/react":38,"./transforms/reactDisplayName":39,"jstransform/visitors/es6-arrow-function-visitors":24,"jstransform/visitors/es6-call-spread-visitors":25,"jstransform/visitors/es6-class-visitors":26,"jstransform/visitors/es6-destructuring-visitors":27,"jstransform/visitors/es6-object-concise-method-visitors":28,"jstransform/visitors/es6-object-short-notation-visitors":29,"jstransform/visitors/es6-rest-param-visitors":30,"jstransform/visitors/es6-template-visitors":31,"jstransform/visitors/es7-spread-property-visitors":33,"jstransform/visitors/reserved-words-visitors":35}],41:[function(_dereq_,module,exports){
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+'use strict';
+/*eslint-disable no-undef*/
+var Buffer = _dereq_('buffer').Buffer;
+
+function inlineSourceMap(sourceMap, sourceCode, sourceFilename) {
+  // This can be used with a sourcemap that has already has toJSON called on it.
+  // Check first.
+  var json = sourceMap;
+  if (typeof sourceMap.toJSON === 'function') {
+    json = sourceMap.toJSON();
+  }
+  json.sources = [sourceFilename];
+  json.sourcesContent = [sourceCode];
+  var base64 = Buffer(JSON.stringify(json)).toString('base64');
+  return '//# sourceMappingURL=data:application/json;base64,' + base64;
+}
+
+module.exports = inlineSourceMap;
+
+},{"buffer":3}]},{},[1])(1)
+});
diff --git a/static/react-0.13.3.min.js b/static/react-0.13.3.min.js
new file mode 100644
index 00000000..64aca4ba
--- /dev/null
+++ b/static/react-0.13.3.min.js
@@ -0,0 +1,16 @@
+/**
+ * React v0.13.3
+ *
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var t;t="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,t.React=e()}}(function(){return function e(t,n,r){function o(a,u){if(!n[a]){if(!t[a]){var s="function"==typeof require&&require;if(!u&&s)return s(a,!0);if(i)return i(a,!0);var l=new Error("Cannot find module '"+a+"'");throw l.code="MODULE_NOT_FOUND",l}var c=n[a]={exports:{}};t[a][0].call(c.exports,function(e){var n=t[a][1][e];return o(n?n:e)},c,c.exports,e,t,n,r)}return n[a].exports}for(var i="function"==typeof require&&require,a=0;a<r.length;a++)o(r[a]);return o}({1:[function(e,t,n){"use strict";var r=e(19),o=e(32),i=e(34),a=e(33),u=e(38),s=e(39),l=e(55),c=(e(56),e(40)),p=e(51),d=e(54),f=e(64),h=e(68),m=e(73),v=e(76),g=e(79),y=e(82),C=e(27),E=e(115),b=e(142);d.inject();var _=l.createElement,x=l.createFactory,D=l.cloneElement,M=m.measure("React","render",h.render),N={Children:{map:o.map,forEach:o.forEach,count:o.count,only:b},Component:i,DOM:c,PropTypes:v,initializeTouchEvents:function(e){r.useTouchEvents=e},createClass:a.createClass,createElement:_,cloneElement:D,createFactory:x,createMixin:function(e){return e},constructAndRenderComponent:h.constructAndRenderComponent,constructAndRenderComponentByID:h.constructAndRenderComponentByID,findDOMNode:E,render:M,renderToString:y.renderToString,renderToStaticMarkup:y.renderToStaticMarkup,unmountComponentAtNode:h.unmountComponentAtNode,isValidElement:l.isValidElement,withContext:u.withContext,__spread:C};"undefined"!=typeof __REACT_DEVTOOLS_GLOBAL_HOOK__&&"function"==typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.inject&&__REACT_DEVTOOLS_GLOBAL_HOOK__.inject({CurrentOwner:s,InstanceHandles:f,Mount:h,Reconciler:g,TextComponent:p});N.version="0.13.3",t.exports=N},{115:115,142:142,19:19,27:27,32:32,33:33,34:34,38:38,39:39,40:40,51:51,54:54,55:55,56:56,64:64,68:68,73:73,76:76,79:79,82:82}],2:[function(e,t,n){"use strict";var r=e(117),o={componentDidMount:function(){this.props.autoFocus&&r(this.getDOMNode())}};t.exports=o},{117:117}],3:[function(e,t,n){"use strict";function r(){var e=window.opera;return"object"==typeof e&&"function"==typeof e.version&&parseInt(e.version(),10)<=12}function o(e){return(e.ctrlKey||e.altKey||e.metaKey)&&!(e.ctrlKey&&e.altKey)}function i(e){switch(e){case T.topCompositionStart:return P.compositionStart;case T.topCompositionEnd:return P.compositionEnd;case T.topCompositionUpdate:return P.compositionUpdate}}function a(e,t){return e===T.topKeyDown&&t.keyCode===b}function u(e,t){switch(e){case T.topKeyUp:return-1!==E.indexOf(t.keyCode);case T.topKeyDown:return t.keyCode!==b;case T.topKeyPress:case T.topMouseDown:case T.topBlur:return!0;default:return!1}}function s(e){var t=e.detail;return"object"==typeof t&&"data"in t?t.data:null}function l(e,t,n,r){var o,l;if(_?o=i(e):w?u(e,r)&&(o=P.compositionEnd):a(e,r)&&(o=P.compositionStart),!o)return null;M&&(w||o!==P.compositionStart?o===P.compositionEnd&&w&&(l=w.getData()):w=v.getPooled(t));var c=g.getPooled(o,n,r);if(l)c.data=l;else{var p=s(r);null!==p&&(c.data=p)}return h.accumulateTwoPhaseDispatches(c),c}function c(e,t){switch(e){case T.topCompositionEnd:return s(t);case T.topKeyPress:var n=t.which;return n!==N?null:(R=!0,I);case T.topTextInput:var r=t.data;return r===I&&R?null:r;default:return null}}function p(e,t){if(w){if(e===T.topCompositionEnd||u(e,t)){var n=w.getData();return v.release(w),w=null,n}return null}switch(e){case T.topPaste:return null;case T.topKeyPress:return t.which&&!o(t)?String.fromCharCode(t.which):null;case T.topCompositionEnd:return M?null:t.data;default:return null}}function d(e,t,n,r){var o;if(o=D?c(e,r):p(e,r),!o)return null;var i=y.getPooled(P.beforeInput,n,r);return i.data=o,h.accumulateTwoPhaseDispatches(i),i}var f=e(15),h=e(20),m=e(21),v=e(22),g=e(91),y=e(95),C=e(139),E=[9,13,27,32],b=229,_=m.canUseDOM&&"CompositionEvent"in window,x=null;m.canUseDOM&&"documentMode"in document&&(x=document.documentMode);var D=m.canUseDOM&&"TextEvent"in window&&!x&&!r(),M=m.canUseDOM&&(!_||x&&x>8&&11>=x),N=32,I=String.fromCharCode(N),T=f.topLevelTypes,P={beforeInput:{phasedRegistrationNames:{bubbled:C({onBeforeInput:null}),captured:C({onBeforeInputCapture:null})},dependencies:[T.topCompositionEnd,T.topKeyPress,T.topTextInput,T.topPaste]},compositionEnd:{phasedRegistrationNames:{bubbled:C({onCompositionEnd:null}),captured:C({onCompositionEndCapture:null})},dependencies:[T.topBlur,T.topCompositionEnd,T.topKeyDown,T.topKeyPress,T.topKeyUp,T.topMouseDown]},compositionStart:{phasedRegistrationNames:{bubbled:C({onCompositionStart:null}),captured:C({onCompositionStartCapture:null})},dependencies:[T.topBlur,T.topCompositionStart,T.topKeyDown,T.topKeyPress,T.topKeyUp,T.topMouseDown]},compositionUpdate:{phasedRegistrationNames:{bubbled:C({onCompositionUpdate:null}),captured:C({onCompositionUpdateCapture:null})},dependencies:[T.topBlur,T.topCompositionUpdate,T.topKeyDown,T.topKeyPress,T.topKeyUp,T.topMouseDown]}},R=!1,w=null,O={eventTypes:P,extractEvents:function(e,t,n,r){return[l(e,t,n,r),d(e,t,n,r)]}};t.exports=O},{139:139,15:15,20:20,21:21,22:22,91:91,95:95}],4:[function(e,t,n){"use 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r=e(15),o=e(25),i=e(29),a=e(33),u=e(55),s=u.createFactory("form"),l=a.createClass({displayName:"ReactDOMForm",tagName:"FORM",mixins:[i,o],render:function(){return s(this.props)},componentDidMount:function(){this.trapBubbledEvent(r.topLevelTypes.topReset,"reset"),this.trapBubbledEvent(r.topLevelTypes.topSubmit,"submit")}});t.exports=l},{15:15,25:25,29:29,33:33,55:55}],44:[function(e,t,n){"use strict";var r=e(5),o=e(9),i=e(11),a=e(68),u=e(73),s=e(133),l=e(144),c={dangerouslySetInnerHTML:"`dangerouslySetInnerHTML` must be set using `updateInnerHTMLByID()`.",style:"`style` must be set using `updateStylesByID()`."},p={updatePropertyByID:function(e,t,n){var r=a.getNode(e);s(!c.hasOwnProperty(t)),null!=n?i.setValueForProperty(r,t,n):i.deleteValueForProperty(r,t)},deletePropertyByID:function(e,t,n){var r=a.getNode(e);s(!c.hasOwnProperty(t)),i.deleteValueForProperty(r,t,n)},updateStylesByID:function(e,t){var n=a.getNode(e);r.setValueForStyles(n,t)},updateInnerHTMLByID:function(e,t){var n=a.getNode(e);l(n,t)},updateTextContentByID:function(e,t){var n=a.getNode(e);o.updateTextContent(n,t)},dangerouslyReplaceNodeWithMarkupByID:function(e,t){var n=a.getNode(e);o.dangerouslyReplaceNodeWithMarkup(n,t)},dangerouslyProcessChildrenUpdates:function(e,t){for(var n=0;n<e.length;n++)e[n].parentNode=a.getNode(e[n].parentID);o.processUpdates(e,t)}};u.measureMethods(p,"ReactDOMIDOperations",{updatePropertyByID:"updatePropertyByID",deletePropertyByID:"deletePropertyByID",updateStylesByID:"updateStylesByID",updateInnerHTMLByID:"updateInnerHTMLByID",updateTextContentByID:"updateTextContentByID",dangerouslyReplaceNodeWithMarkupByID:"dangerouslyReplaceNodeWithMarkupByID",dangerouslyProcessChildrenUpdates:"dangerouslyProcessChildrenUpdates"}),t.exports=p},{11:11,133:133,144:144,5:5,68:68,73:73,9:9}],45:[function(e,t,n){"use strict";var r=e(15),o=e(25),i=e(29),a=e(33),u=e(55),s=u.createFactory("iframe"),l=a.createClass({displayName:"ReactDOMIframe",tagName:"IFRAME",mixins:[i,o],render:function(){return s(this.props)},componentDidMount:function(){this.trapBubbledEvent(r.topLevelTypes.topLoad,"load")}});t.exports=l},{15:15,25:25,29:29,33:33,55:55}],46:[function(e,t,n){"use strict";var r=e(15),o=e(25),i=e(29),a=e(33),u=e(55),s=u.createFactory("img"),l=a.createClass({displayName:"ReactDOMImg",tagName:"IMG",mixins:[i,o],render:function(){return s(this.props)},componentDidMount:function(){this.trapBubbledEvent(r.topLevelTypes.topLoad,"load"),this.trapBubbledEvent(r.topLevelTypes.topError,"error")}});t.exports=l},{15:15,25:25,29:29,33:33,55:55}],47:[function(e,t,n){"use strict";function r(){this.isMounted()&&this.forceUpdate()}var o=e(2),i=e(11),a=e(24),u=e(29),s=e(33),l=e(55),c=e(68),p=e(85),d=e(27),f=e(133),h=l.createFactory("input"),m={},v=s.createClass({displayName:"ReactDOMInput",tagName:"INPUT",mixins:[o,a.Mixin,u],getInitialState:function(){var e=this.props.defaultValue;return{initialChecked:this.props.defaultChecked||!1,initialValue:null!=e?e:null}},render:function(){var e=d({},this.props);e.defaultChecked=null,e.defaultValue=null;var t=a.getValue(this);e.value=null!=t?t:this.state.initialValue;var n=a.getChecked(this);return e.checked=null!=n?n:this.state.initialChecked,e.onChange=this._handleChange,h(e,this.props.children)},componentDidMount:function(){var e=c.getID(this.getDOMNode());m[e]=this},componentWillUnmount:function(){var e=this.getDOMNode(),t=c.getID(e);delete m[t]},componentDidUpdate:function(e,t,n){var r=this.getDOMNode();null!=this.props.checked&&i.setValueForProperty(r,"checked",this.props.checked||!1);var o=a.getValue(this);null!=o&&i.setValueForProperty(r,"value",""+o)},_handleChange:function(e){var t,n=a.getOnChange(this);n&&(t=n.call(this,e)),p.asap(r,this);var o=this.props.name;if("radio"===this.props.type&&null!=o){for(var i=this.getDOMNode(),u=i;u.parentNode;)u=u.parentNode;for(var s=u.querySelectorAll("input[name="+JSON.stringify(""+o)+'][type="radio"]'),l=0,d=s.length;d>l;l++){var h=s[l];if(h!==i&&h.form===i.form){var v=c.getID(h);f(v);var g=m[v];f(g),p.asap(r,g)}}}return t}});t.exports=v},{11:11,133:133,2:2,24:24,27:27,29:29,33:33,55:55,68:68,85:85}],48:[function(e,t,n){"use strict";var r=e(29),o=e(33),i=e(55),a=(e(150),i.createFactory("option")),u=o.createClass({displayName:"ReactDOMOption",tagName:"OPTION",mixins:[r],componentWillMount:function(){},render:function(){return a(this.props,this.props.children)}});t.exports=u},{150:150,29:29,33:33,55:55}],49:[function(e,t,n){"use strict";function r(){if(this._pendingUpdate){this._pendingUpdate=!1;var 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e.onChange=this._handleChange,e.value=null,f(e,this.props.children)},componentWillMount:function(){this._pendingUpdate=!1},componentDidMount:function(){var e=u.getValue(this);null!=e?i(this,e):null!=this.props.defaultValue&&i(this,this.props.defaultValue)},componentDidUpdate:function(e){var t=u.getValue(this);null!=t?(this._pendingUpdate=!1,i(this,t)):!e.multiple!=!this.props.multiple&&(null!=this.props.defaultValue?i(this,this.props.defaultValue):i(this,this.props.multiple?[]:""))},_handleChange:function(e){var t,n=u.getOnChange(this);return n&&(t=n.call(this,e)),this._pendingUpdate=!0,p.asap(r,this),t}});t.exports=h},{2:2,24:24,27:27,29:29,33:33,55:55,85:85}],50:[function(e,t,n){"use strict";function r(e,t,n,r){return e===n&&t===r}function o(e){var t=document.selection,n=t.createRange(),r=n.text.length,o=n.duplicate();o.moveToElementText(e),o.setEndPoint("EndToStart",n);var i=o.text.length,a=i+r;return{start:i,end:a}}function i(e){var 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