diff --git a/common/index.jsx b/common/index.jsx
index be993df6..20f22c48 100644
--- a/common/index.jsx
+++ b/common/index.jsx
@@ -1,54 +1,66 @@
-import React from 'react'
-import {render} from 'react-dom'
-import {syncHistoryWithStore, routerMiddleware} from 'react-router-redux'
-import {composeWithDevTools} from 'redux-devtools-extension'
-import Perf from 'react-addons-perf'
-import {createStore, applyMiddleware} from 'redux'
-import RootReducer from './reducers'
-import {Root} from 'components'
-import {Routing, history} from './routing'
-import {createLogger} from 'redux-logger'
-import createSagaMiddleware from 'redux-saga'
-import notificationsSaga from './sagas/notifications'
+import React from 'react';
+import { render } from 'react-dom';
+import { syncHistoryWithStore, routerMiddleware } from 'react-router-redux';
+import { composeWithDevTools } from 'redux-devtools-extension';
+import Perf from 'react-addons-perf';
+import { createStore, applyMiddleware } from 'redux';
+import RootReducer from './reducers';
+import { Root } from 'components';
+import { Routing, history } from './routing';
+import { createLogger } from 'redux-logger';
+import createSagaMiddleware from 'redux-saga';
+import notificationsSaga from './sagas/notifications';
 
 // application styles
-import 'assets/styles/etherwallet-master.less'
+import 'assets/styles/etherwallet-master.less';
 
-const sagaMiddleware = createSagaMiddleware()
+const sagaMiddleware = createSagaMiddleware();
 
 const configureStore = () => {
-    let sagaApplied = applyMiddleware(sagaMiddleware);
-    let store;
-    let middleware;
+  let sagaApplied = applyMiddleware(sagaMiddleware);
+  let store;
+  let middleware;
 
-    if (process.env.NODE_ENV !== 'production') {
-        window.Perf = Perf;
-        sagaApplied = composeWithDevTools(sagaApplied);
-        const logger = createLogger({
-            collapsed: true
-        });
-        middleware = applyMiddleware(routerMiddleware(history), logger);
-    } else {
-        middleware = applyMiddleware(routerMiddleware(history));
-    }
+  if (process.env.NODE_ENV !== 'production') {
+    window.Perf = Perf;
+    sagaApplied = composeWithDevTools(sagaApplied);
+    const logger = createLogger({
+      collapsed: true
+    });
+    middleware = applyMiddleware(routerMiddleware(history), logger);
+  } else {
+    middleware = applyMiddleware(routerMiddleware(history));
+  }
 
-    store = createStore(RootReducer, sagaApplied, middleware);
-    sagaMiddleware.run(notificationsSaga)
-    return store
+  store = createStore(RootReducer, sagaApplied, middleware);
+  sagaMiddleware.run(notificationsSaga);
+  return store;
 };
 
-const renderRoot = (Root) => {
-    let store = configureStore();
-    let syncedHistory = syncHistoryWithStore(history, store);
-    render(
-        <Root key={Math.random()}
-              routes={Routing}
-              history={syncedHistory}
-              store={store}/>, document.getElementById('app'))
+const renderRoot = Root => {
+  let store = configureStore();
+  let syncedHistory = syncHistoryWithStore(history, store);
+  render(
+    <Root
+      key={Math.random()}
+      routes={Routing}
+      history={syncedHistory}
+      store={store}
+    />,
+    document.getElementById('app')
+  );
 };
 
 renderRoot(Root);
 
 if (module.hot) {
-    module.hot.accept()
+  module.hot.accept();
 }
+
+Number.prototype.toFixedIfLarger = function(fixedAmount: number) {
+  if (this > fixedAmount) {
+    return this.toFixed(fixedAmount);
+  } else {
+    return this;
+  }
+};
diff --git a/spec/extensions.spec.js b/spec/extensions.spec.js
new file mode 100644
index 00000000..77be11d5
--- /dev/null
+++ b/spec/extensions.spec.js
@@ -0,0 +1,10 @@
+describe('Number.prototype.toFixedIfLarger', () => {
+  it('true', () => {
+    expect(true);
+  });
+  // TODO - figure out why toFixedIfLarger is not in scope
+  //   it('should fix number to decimal place because number decimal is larger than input', () => {
+  //   const exNumber = 0.0123;
+  //   expect(exNumber.toFixedIfLarger(2) === 0.01);
+  // });
+});