Merge pull request #385 from embark-framework/console_logs_fix

intercept logs in the app itself - stopgap fix

lib/core/engine.js

@@ -35,6 +35,53 @@ class Engine {
     this.servicesMonitor.addCheck('embarkVersion', function (cb) {
       return cb({name: 'Embark ' + self.version, status: 'on'});
     }, 0);
+
+    if (this.interceptLogs || this.interceptLogs === undefined) {
+      this.doInterceptLogs();
+    }
+  }
+
+  doInterceptLogs() {
+    var self = this;
+    let context = {};
+    context.console = console;
+
+    let normalizeInput = function(input) {
+      let args = Object.values(input);
+      if (args.length === 0) {
+        return "";
+      }
+      if (args.length === 1) {
+        if (Array.isArray(args[0])) { return args[0].join(','); }
+        return args[0] || "";
+      }
+      return ('[' + args.map((x) => {
+        if (x === null) { return "null"; }
+        if (x === undefined) { return "undefined"; }
+        if (Array.isArray(x)) { return x.join(','); }
+        return x;
+      }).toString() + ']');
+    };
+
+    context.console.log  = function() {
+      self.logger.info(normalizeInput(arguments));
+    };
+    context.console.warn  = function() {
+      self.logger.warn(normalizeInput(arguments));
+    };
+    context.console.info  = function() {
+      self.logger.info(normalizeInput(arguments));
+    };
+    context.console.debug  = function() {
+      // TODO: ue JSON.stringify
+      self.logger.debug(normalizeInput(arguments));
+    };
+    context.console.trace  = function() {
+      self.logger.trace(normalizeInput(arguments));
+    };
+    context.console.dir  = function() {
+      self.logger.dir(normalizeInput(arguments));
+    };
   }
 
   startMonitor() {