diff --git a/.eslintrc b/.eslintrc
index 0b3c8a7150..797d1908ba 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -6,6 +6,7 @@
     "node": true
   },
   "rules": {
+    "arrow-parens": "off",
     "no-plusplus": "off",
     "react/require-default-props": "off",
     "react/jsx-filename-extension": ["error", { "extensions": [".js"] }],
diff --git a/package.json b/package.json
index 6399d0b8fe..943baf1c93 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,9 @@
     "build:umd:min": "cross-env MINIFY=1 webpack --config webpack.build.js",
     "build": "npm run clean && npm run build:commonjs",
     "bundle": "mkdir -p dist && npm run build:umd && npm run build:umd:min",
+    "format": "prettier --write --single-quote --print-width 100 --trailing-comma all \"src/**/*.js\"",
     "lint": "eslint src",
+    "precommit": "lint-staged",
     "preversion": "npm run lint && npm test && npm run build && npm run bundle && git add dist/ && git commit -m 'publish: Distribution'",
     "prepublish": "npm run build",
     "test": "jest",
@@ -59,7 +61,10 @@
     "eslint-plugin-import": "^2.2.0",
     "eslint-plugin-jsx-a11y": "^4.0.0",
     "eslint-plugin-react": "^6.2.1",
+    "husky": "^0.13.3",
     "jest-cli": "^19.0.2",
+    "lint-staged": "^3.4.0",
+    "prettier": "^1.2.2",
     "react": "^15.0.0",
     "react-addons-test-utils": "^15.0.0",
     "react-dom": "^15.0.0",
@@ -79,5 +84,11 @@
     "roots": [
       "src"
     ]
+  },
+  "lint-staged": {
+    "src/**/*.js": [
+      "prettier --single-quote --print-width 100 --trailing-comma all --write",
+      "git add"
+    ]
   }
 }
diff --git a/src/components/Tab.js b/src/components/Tab.js
index 9c0c23de38..b338d02be0 100644
--- a/src/components/Tab.js
+++ b/src/components/Tab.js
@@ -3,7 +3,6 @@ import React, { Component } from 'react';
 import cx from 'classnames';
 
 export default class Tab extends Component {
-
   static defaultProps = {
     className: 'ReactTabs__Tab',
     disabledClassName: 'ReactTabs__Tab--disabled',
@@ -15,11 +14,7 @@ export default class Tab extends Component {
   };
 
   static propTypes = {
-    children: PropTypes.oneOfType([
-      PropTypes.array,
-      PropTypes.object,
-      PropTypes.string,
-    ]),
+    children: PropTypes.oneOfType([PropTypes.array, PropTypes.object, PropTypes.string]),
     className: PropTypes.oneOfType([PropTypes.string, PropTypes.array, PropTypes.object]),
     disabled: PropTypes.bool,
     disabledClassName: PropTypes.string, // private
@@ -57,19 +52,20 @@ export default class Tab extends Component {
       selected,
       selectedClassName,
       tabRef,
-      ...attributes } = this.props;
+      ...attributes
+    } = this.props;
 
     return (
       <li
         {...attributes}
-        className={cx(
-          className,
-          {
-            [selectedClassName]: selected,
-            [disabledClassName]: disabled,
-          },
-        )}
-        ref={(node) => { this.node = node; if (tabRef) tabRef(node); }}
+        className={cx(className, {
+          [selectedClassName]: selected,
+          [disabledClassName]: disabled,
+        })}
+        ref={node => {
+          this.node = node;
+          if (tabRef) tabRef(node);
+        }}
         role="tab"
         id={id}
         aria-selected={selected ? 'true' : 'false'}
diff --git a/src/components/TabList.js b/src/components/TabList.js
index 0628c8243f..da779e9bf5 100644
--- a/src/components/TabList.js
+++ b/src/components/TabList.js
@@ -3,31 +3,20 @@ import React, { Component } from 'react';
 import cx from 'classnames';
 
 export default class TabList extends Component {
-
   static defaultProps = {
     className: 'ReactTabs__TabList',
   };
 
   static propTypes = {
-    children: PropTypes.oneOfType([
-      PropTypes.object,
-      PropTypes.array,
-    ]),
+    children: PropTypes.oneOfType([PropTypes.object, PropTypes.array]),
     className: PropTypes.oneOfType([PropTypes.string, PropTypes.array, PropTypes.object]),
   };
 
   render() {
-    const {
-      children,
-      className,
-      ...attributes } = this.props;
+    const { children, className, ...attributes } = this.props;
 
     return (
-      <ul
-        {...attributes}
-        className={cx(className)}
-        role="tablist"
-      >
+      <ul {...attributes} className={cx(className)} role="tablist">
         {children}
       </ul>
     );
diff --git a/src/components/TabPanel.js b/src/components/TabPanel.js
index bd8a750059..780735ee68 100644
--- a/src/components/TabPanel.js
+++ b/src/components/TabPanel.js
@@ -3,7 +3,6 @@ import React, { Component } from 'react';
 import cx from 'classnames';
 
 export default class TabPanel extends Component {
-
   static defaultProps = {
     className: 'ReactTabs__TabPanel',
     forceRender: false,
@@ -32,22 +31,20 @@ export default class TabPanel extends Component {
       selectedClassName,
       style,
       tabId,
-      ...attributes } = this.props;
+      ...attributes
+    } = this.props;
 
     return (
       <div
         {...attributes}
-        className={cx(
-          className,
-          {
-            [selectedClassName]: selected,
-          },
-        )}
+        className={cx(className, {
+          [selectedClassName]: selected,
+        })}
         role="tabpanel"
         id={id}
         aria-labelledby={tabId}
       >
-        {(forceRender || selected) ? children : null}
+        {forceRender || selected ? children : null}
       </div>
     );
   }
diff --git a/src/components/Tabs.js b/src/components/Tabs.js
index c9b20c743f..d7bc0be4e8 100644
--- a/src/components/Tabs.js
+++ b/src/components/Tabs.js
@@ -5,7 +5,6 @@ import UncontrolledTabs from './UncontrolledTabs';
 import { getTabsCount } from '../helpers/count';
 
 export default class Tabs extends Component {
-
   static defaultProps = {
     defaultFocus: false,
     forceRenderTabPanel: false,
@@ -38,9 +37,9 @@ export default class Tabs extends Component {
       Tabs.inUncontrolledMode(newProps) !== Tabs.inUncontrolledMode(this.props)
     ) {
       throw new Error(
-`Switching between controlled mode (by using \`selectedIndex\`) and uncontrolled mode is not supported in \`Tabs\`.
+        `Switching between controlled mode (by using \`selectedIndex\`) and uncontrolled mode is not supported in \`Tabs\`.
 For more information about controlled and uncontrolled mode of react-tabs see the README.`,
-        );
+      );
     }
     // Use a transactional update to prevent race conditions
     // when reading the state in copyPropsToState
@@ -70,7 +69,7 @@ For more information about controlled and uncontrolled mode of react-tabs see th
     }
 
     this.setState(state);
-  }
+  };
 
   // preserve the existing selectedIndex from state.
   // If the state has not selectedIndex, default to the defaultIndex or 0
diff --git a/src/components/UncontrolledTabs.js b/src/components/UncontrolledTabs.js
index 31ddff5cbe..dd7e32e99e 100644
--- a/src/components/UncontrolledTabs.js
+++ b/src/components/UncontrolledTabs.js
@@ -19,7 +19,6 @@ function isTabDisabled(node) {
 }
 
 export default class UncontrolledTabs extends Component {
-
   static defaultProps = {
     className: 'ReactTabs',
     focus: false,
@@ -129,7 +128,7 @@ export default class UncontrolledTabs extends Component {
     }
 
     // Map children to dynamically setup refs
-    return React.Children.map(children, (child) => {
+    return React.Children.map(children, child => {
       // null happens when conditionally rendering TabPanel/Tab
       // see https://github.com/reactjs/react-tabs/issues/37
       if (child === null) {
@@ -144,12 +143,13 @@ export default class UncontrolledTabs extends Component {
 
         // Figure out if the current focus in the DOM is set on a Tab
         // If it is we should keep the focus on the next selected tab
-        const wasTabFocused = React.Children.toArray(child.props.children)
+        const wasTabFocused = React.Children
+          .toArray(child.props.children)
           .filter(tab => tab.type === Tab)
           .some((tab, i) => document.activeElement === this.getTab(i));
 
         result = cloneElement(child, {
-          children: React.Children.map(child.props.children, (tab) => {
+          children: React.Children.map(child.props.children, tab => {
             // null happens when conditionally rendering TabPanel/Tab
             // see https://github.com/reactjs/react-tabs/issues/37
             if (tab === null) {
@@ -164,7 +164,9 @@ export default class UncontrolledTabs extends Component {
             const selected = selectedIndex === listIndex;
 
             const props = {
-              tabRef: (node) => { this.tabNodes[key] = node; },
+              tabRef: node => {
+                this.tabNodes[key] = node;
+              },
               id: this.tabIds[listIndex],
               panelId: this.panelIds[listIndex],
               selected,
@@ -198,7 +200,7 @@ export default class UncontrolledTabs extends Component {
     });
   }
 
-  handleKeyDown = (e) => {
+  handleKeyDown = e => {
     if (this.isTabFromContainer(e.target)) {
       let index = this.props.selectedIndex;
       let preventDefault = false;
@@ -222,9 +224,10 @@ export default class UncontrolledTabs extends Component {
     }
   };
 
-  handleClick = (e) => {
+  handleClick = e => {
     let node = e.target;
-    do { // eslint-disable-line no-cond-assign
+    // eslint-disable-next-line no-cond-assign
+    do {
       if (this.isTabFromContainer(node)) {
         if (isTabDisabled(node)) {
           return;
@@ -263,16 +266,16 @@ export default class UncontrolledTabs extends Component {
   render() {
     // Delete all known props, so they don't get added to DOM
     const {
-        children,
-        className,
-        disabledTabClassName,
-        focus,
-        forceRenderTabPanel,
-        onSelect,
-        selectedIndex,
-        selectedTabClassName,
-        selectedTabPanelClassName,
-        ...attributes
+      children,
+      className,
+      disabledTabClassName,
+      focus,
+      forceRenderTabPanel,
+      onSelect,
+      selectedIndex,
+      selectedTabClassName,
+      selectedTabPanelClassName,
+      ...attributes
     } = this.props;
 
     return (
@@ -281,7 +284,9 @@ export default class UncontrolledTabs extends Component {
         className={cx(className)}
         onClick={this.handleClick}
         onKeyDown={this.handleKeyDown}
-        ref={(node) => { this.node = node; }}
+        ref={node => {
+          this.node = node;
+        }}
         data-tabs
       >
         {this.getChildren()}
diff --git a/src/components/__tests__/Tab-test.js b/src/components/__tests__/Tab-test.js
index 4549f1161d..7c0be3a5e6 100644
--- a/src/components/__tests__/Tab-test.js
+++ b/src/components/__tests__/Tab-test.js
@@ -6,7 +6,7 @@ import Tab from '../Tab';
 describe('<Tab />', () => {
   beforeAll(() => {
     // eslint-disable-next-line no-console
-    console.error = (error) => {
+    console.error = error => {
       throw new Error(error);
     };
   });
diff --git a/src/components/__tests__/TabList-test.js b/src/components/__tests__/TabList-test.js
index 906b7b87db..471db7eefc 100644
--- a/src/components/__tests__/TabList-test.js
+++ b/src/components/__tests__/TabList-test.js
@@ -13,7 +13,7 @@ function hasClassAt(wrapper, index, className) {
 describe('<TabList />', () => {
   beforeAll(() => {
     // eslint-disable-next-line no-console
-    console.error = (error) => {
+    console.error = error => {
       throw new Error(error);
     };
   });
@@ -87,7 +87,9 @@ describe('<TabList />', () => {
       <Tabs defaultIndex={0}>
         <TabList>
           <Tab selectedClassName="active" disabledClassName="disabled">Foo</Tab>
-          <Tab disabled selectedClassName="active" disabledClassName="disabled">Bar</Tab>
+          <Tab disabled selectedClassName="active" disabledClassName="disabled">
+            Bar
+          </Tab>
         </TabList>
         <TabPanel>Foo</TabPanel>
         <TabPanel>Bar</TabPanel>
diff --git a/src/components/__tests__/TabPanel-test.js b/src/components/__tests__/TabPanel-test.js
index fc65e165ba..9d452b198f 100644
--- a/src/components/__tests__/TabPanel-test.js
+++ b/src/components/__tests__/TabPanel-test.js
@@ -6,7 +6,7 @@ import TabPanel from '../TabPanel';
 describe('<TabPanel />', () => {
   beforeAll(() => {
     // eslint-disable-next-line no-console
-    console.error = (error) => {
+    console.error = error => {
       throw new Error(error);
     };
   });
@@ -49,7 +49,11 @@ describe('<TabPanel />', () => {
   });
 
   it('should support being selected with custom class name', () => {
-    const wrapper = shallow(<TabPanel selected id="abcd" tabId="1234" selectedClassName="selected">Hola</TabPanel>);
+    const wrapper = shallow(
+      <TabPanel selected id="abcd" tabId="1234" selectedClassName="selected">
+        Hola
+      </TabPanel>,
+    );
 
     expect(wrapper.hasClass('ReactTabs__TabPanel')).toBe(true);
     expect(wrapper.hasClass('ReactTabs__TabPanel--selected')).toBe(false);
@@ -72,4 +76,3 @@ describe('<TabPanel />', () => {
     expect(wrapper.prop('role')).toBe('tabpanel');
   });
 });
-
diff --git a/src/components/__tests__/Tabs-test.js b/src/components/__tests__/Tabs-test.js
index 2241ddb7ee..c09c2ed8d6 100644
--- a/src/components/__tests__/Tabs-test.js
+++ b/src/components/__tests__/Tabs-test.js
@@ -36,7 +36,7 @@ function assertTabSelected(wrapper, index) {
 describe('<Tabs />', () => {
   beforeAll(() => {
     // eslint-disable-next-line no-console
-    console.error = (error) => {
+    console.error = error => {
       throw new Error(error);
     };
   });
@@ -69,12 +69,14 @@ describe('<Tabs />', () => {
 
     test('should call onSelect when selection changes', () => {
       const called = { index: -1, last: -1 };
-      const wrapper = mount(createTabs({
-        onSelect(index, last) {
-          called.index = index;
-          called.last = last;
-        },
-      }));
+      const wrapper = mount(
+        createTabs({
+          onSelect(index, last) {
+            called.index = index;
+            called.last = last;
+          },
+        }),
+      );
 
       wrapper.childAt(0).childAt(1).simulate('click');
 
@@ -125,7 +127,7 @@ describe('<Tabs />', () => {
       const wrapper = mount(createTabs());
       const tablist = wrapper.childAt(0);
 
-      for (let i = 0, j = 0, l = tablist.children.length; i < l; i++, j += 2) {
+      for (let i = 0, j = 0, l = tablist.children.length; i < l; i++, (j += 2)) {
         const tab = tablist.childAt(i);
         const panel = wrapper.childAt(i + 1);
 
@@ -191,22 +193,24 @@ describe('<Tabs />', () => {
     test('should not clone non tabs element', () => {
       class Demo extends React.Component {
         render() {
-          const arbitrary1 = <div ref="arbitrary1">One</div>;  // eslint-disable-line react/no-string-refs
-          const arbitrary2 = <span ref="arbitrary2">Two</span>;  // eslint-disable-line react/no-string-refs
-          const arbitrary3 = <small ref="arbitrary3">Three</small>;  // eslint-disable-line react/no-string-refs
+          const arbitrary1 = <div ref="arbitrary1">One</div>; // eslint-disable-line react/no-string-refs
+          const arbitrary2 = <span ref="arbitrary2">Two</span>; // eslint-disable-line react/no-string-refs
+          const arbitrary3 = <small ref="arbitrary3">Three</small>; // eslint-disable-line react/no-string-refs
 
-          return (<Tabs>
-            <TabList>
-              {arbitrary1}
-              <Tab>Foo</Tab>
-              {arbitrary2}
-              <Tab>Bar</Tab>
-              {arbitrary3}
-            </TabList>
+          return (
+            <Tabs>
+              <TabList>
+                {arbitrary1}
+                <Tab>Foo</Tab>
+                {arbitrary2}
+                <Tab>Bar</Tab>
+                {arbitrary3}
+              </TabList>
 
-            <TabPanel>Hello Baz</TabPanel>
-            <TabPanel>Hello Faz</TabPanel>
-          </Tabs>);
+              <TabPanel>Hello Baz</TabPanel>
+              <TabPanel>Hello Faz</TabPanel>
+            </Tabs>
+          );
         }
       }
 
@@ -238,7 +242,10 @@ describe('<Tabs />', () => {
     test('should result with warning when onSelect missing when selectedIndex set', () => {
       const oldConsoleError = console.error; // eslint-disable-line no-console
       const catchedErrors = [];
-      console.error = (error) => { catchedErrors.push(error); }; // eslint-disable-line no-console
+      // eslint-disable-next-line no-console
+      console.error = error => {
+        catchedErrors.push(error);
+      };
       shallow(
         <Tabs selectedIndex={1}>
           <TabList>
@@ -249,14 +256,18 @@ describe('<Tabs />', () => {
       );
       console.error = oldConsoleError; // eslint-disable-line no-console
 
-      const expectedMessage = 'The prop `onSelect` is marked as required in `Tabs`, but its value is `undefined` or `null`.';
+      const expectedMessage =
+        'The prop `onSelect` is marked as required in `Tabs`, but its value is `undefined` or `null`.';
       expect(catchedErrors.some(msg => msg.indexOf(expectedMessage) > -1)).toBe(true);
     });
 
     test('should result with warning when defaultIndex and selectedIndex set', () => {
       const oldConsoleError = console.error; // eslint-disable-line no-console
       const catchedErrors = [];
-      console.error = (error) => { catchedErrors.push(error); }; // eslint-disable-line no-console
+      // eslint-disable-next-line no-console
+      console.error = error => {
+        catchedErrors.push(error);
+      };
       shallow(
         <Tabs selectedIndex={1} defaultIndex={1}>
           <TabList>
@@ -267,7 +278,8 @@ describe('<Tabs />', () => {
       );
       console.error = oldConsoleError; // eslint-disable-line no-console
 
-      const expectedMessage = 'The prop `selectedIndex` cannot be used together with `defaultIndex` in `Tabs`.';
+      const expectedMessage =
+        'The prop `selectedIndex` cannot be used together with `defaultIndex` in `Tabs`.';
       expect(catchedErrors.some(msg => msg.indexOf(expectedMessage) > -1)).toBe(true);
     });
 
@@ -328,24 +340,28 @@ describe('<Tabs />', () => {
     });
 
     test('should be okay with rendering just TabList', () => {
-      expect(() => shallow(
-        <Tabs>
-          <TabList />
-        </Tabs>,
-      )).not.toThrow();
+      expect(() =>
+        shallow(
+          <Tabs>
+            <TabList />
+          </Tabs>,
+        ),
+      ).not.toThrow();
     });
 
     test('should gracefully render null', () => {
-      expect(() => shallow(
-        <Tabs>
-          <TabList>
-            <Tab>Tab A</Tab>
-            {false && <Tab>Tab B</Tab>}
-          </TabList>
-          <TabPanel>Content A</TabPanel>
-          {false && <TabPanel>Content B</TabPanel>}
-        </Tabs>,
-      )).not.toThrow();
+      expect(() =>
+        shallow(
+          <Tabs>
+            <TabList>
+              <Tab>Tab A</Tab>
+              {false && <Tab>Tab B</Tab>}
+            </TabList>
+            <TabPanel>Content A</TabPanel>
+            {false && <TabPanel>Content B</TabPanel>}
+          </Tabs>,
+        ),
+      ).not.toThrow();
     });
 
     test('should support nested tabs', () => {
@@ -405,7 +421,9 @@ describe('<Tabs />', () => {
   test('should switch tabs if setState is called within onSelect', () => {
     class Wrap extends React.Component {
       handleSelect = () => this.setState({ foo: 'bar' });
-      render() { return createTabs({ onSelect: this.handleSelect }); }
+      render() {
+        return createTabs({ onSelect: this.handleSelect });
+      }
     }
 
     const wrapper = mount(<Wrap />);
diff --git a/src/helpers/count.js b/src/helpers/count.js
index 3f92727508..b6a3e0d74e 100644
--- a/src/helpers/count.js
+++ b/src/helpers/count.js
@@ -16,7 +16,5 @@ export function getTabsCount(children) {
 }
 
 export function getPanelsCount(children) {
-  return React.Children.count(
-    React.Children.toArray(children).filter(x => x.type === TabPanel),
-  );
+  return React.Children.count(React.Children.toArray(children).filter(x => x.type === TabPanel));
 }
diff --git a/src/helpers/propTypes.js b/src/helpers/propTypes.js
index 445565a9d8..726897e467 100644
--- a/src/helpers/propTypes.js
+++ b/src/helpers/propTypes.js
@@ -9,7 +9,7 @@ export function childrenPropType(props, propName, componentName) {
   let panelsCount = 0;
   const children = props[propName];
 
-  React.Children.forEach(children, (child) => {
+  React.Children.forEach(children, child => {
     // null happens when conditionally rendering TabPanel/Tab
     // see https://github.com/reactjs/react-tabs/issues/37
     if (child === null) {
@@ -17,7 +17,7 @@ export function childrenPropType(props, propName, componentName) {
     }
 
     if (child.type === TabList) {
-      React.Children.forEach(child.props.children, (c) => {
+      React.Children.forEach(child.props.children, c => {
         // null happens when conditionally rendering TabPanel/Tab
         // see https://github.com/reactjs/react-tabs/issues/37
         if (c === null) {
@@ -40,7 +40,7 @@ export function childrenPropType(props, propName, componentName) {
   if (tabsCount !== panelsCount) {
     error = new Error(
       `There should be an equal number of 'Tab' and 'TabPanel' in \`${componentName}\`.` +
-      `Received ${tabsCount} 'Tab' and ${panelsCount} 'TabPanel'.`,
+        `Received ${tabsCount} 'Tab' and ${panelsCount} 'TabPanel'.`,
     );
   }
 
@@ -53,10 +53,12 @@ export function onSelectPropType(props, propName, componentName, location, propF
   let error = null;
 
   if (prop && typeof prop !== 'function') {
-    error = new Error(`Invalid ${location} \`${name}\` of type \`${typeof prop}\` supplied to \`${componentName}\`, expected \`function\`.`);
+    error = new Error(
+      `Invalid ${location} \`${name}\` of type \`${typeof prop}\` supplied to \`${componentName}\`, expected \`function\`.`,
+    );
   } else if (props.selectedIndex != null && prop == null) {
     error = new Error(
-`The ${location} \`${name}\` is marked as required in \`${componentName}\`, but its value is \`undefined\` or \`null\`.
+      `The ${location} \`${name}\` is marked as required in \`${componentName}\`, but its value is \`undefined\` or \`null\`.
 \`onSelect\` is required when \`selectedIndex\` is also set. Not doing so will make the tabs not do anything, as \`selectedIndex\` indicates that you want to handle the selected tab yourself.
 If you only want to set the inital tab replace \`selectedIndex\` with \`defaultIndex\`.`,
     );
@@ -71,10 +73,12 @@ export function selectedIndexPropType(props, propName, componentName, location,
   let error = null;
 
   if (prop != null && typeof prop !== 'number') {
-    error = new Error(`Invalid ${location} \`${name}\` of type \`${typeof prop}\` supplied to \`${componentName}\`, expected \`number\`.`);
+    error = new Error(
+      `Invalid ${location} \`${name}\` of type \`${typeof prop}\` supplied to \`${componentName}\`, expected \`number\`.`,
+    );
   } else if (props.defaultIndex != null && prop != null) {
     return new Error(
-`The ${location} \`${name}\` cannot be used together with \`defaultIndex\` in \`${componentName}\`.
+      `The ${location} \`${name}\` cannot be used together with \`defaultIndex\` in \`${componentName}\`.
 Either remove \`${name}\` to let \`${componentName}\` handle the selected tab internally or remove \`defaultIndex\` to handle it yourself.`,
     );
   }
diff --git a/src/index.js b/src/index.js
index cc96e5f402..f948109ea1 100644
--- a/src/index.js
+++ b/src/index.js
@@ -4,10 +4,4 @@ import Tab from './components/Tab';
 import TabPanel from './components/TabPanel';
 import { reset as resetIdCounter } from './helpers/uuid';
 
-export {
-  Tab,
-  TabList,
-  TabPanel,
-  Tabs,
-  resetIdCounter,
-};
+export { Tab, TabList, TabPanel, Tabs, resetIdCounter };
diff --git a/yarn.lock b/yarn.lock
index 6328bbac2a..2902b069c4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -74,7 +74,7 @@ amdefine@>=0.0.4:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
 
-ansi-escapes@^1.1.0, ansi-escapes@^1.4.0:
+ansi-escapes@^1.0.0, ansi-escapes@^1.1.0, ansi-escapes@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
 
@@ -103,6 +103,10 @@ anymatch@^1.3.0:
     arrify "^1.0.0"
     micromatch "^2.1.5"
 
+app-root-path@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/app-root-path/-/app-root-path-2.0.1.tgz#cd62dcf8e4fd5a417efc664d2e5b10653c651b46"
+
 append-transform@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/append-transform/-/append-transform-0.4.0.tgz#d76ebf8ca94d276e247a36bad44a4b74ab611991"
@@ -209,6 +213,10 @@ ast-types-flow@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/ast-types-flow/-/ast-types-flow-0.0.7.tgz#f70b735c6bca1a5c9c22d982c3e39e7feba3bdad"
 
+ast-types@0.9.8:
+  version "0.9.8"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.9.8.tgz#6cb6a40beba31f49f20928e28439fc14a3dab078"
+
 async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
@@ -267,7 +275,7 @@ babel-cli@^6.9.0:
   optionalDependencies:
     chokidar "^1.6.1"
 
-babel-code-frame@^6.11.0, babel-code-frame@^6.16.0, babel-code-frame@^6.22.0:
+babel-code-frame@6.22.0, babel-code-frame@^6.11.0, babel-code-frame@^6.16.0, babel-code-frame@^6.22.0:
   version "6.22.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.22.0.tgz#027620bee567a88c32561574e7fd0801d33118e4"
   dependencies:
@@ -868,6 +876,10 @@ babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.23.0, babel-types@^6.24
     lodash "^4.2.0"
     to-fast-properties "^1.0.1"
 
+babylon@7.0.0-beta.8:
+  version "7.0.0-beta.8"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.8.tgz#2bdc5ae366041442c27e068cce6f0d7c06ea9949"
+
 babylon@^6.11.0, babylon@^6.13.0, babylon@^6.15.0, babylon@^6.17.0:
   version "6.17.0"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.17.0.tgz#37da948878488b9c4e3c4038893fa3314b3fc932"
@@ -1087,7 +1099,7 @@ center-align@^0.1.1:
     align-text "^0.1.3"
     lazy-cache "^1.0.3"
 
-chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
+chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
   dependencies:
@@ -1157,12 +1169,23 @@ classnames@^2.2.0:
   version "2.2.5"
   resolved "https://registry.yarnpkg.com/classnames/-/classnames-2.2.5.tgz#fb3801d453467649ef3603c7d61a02bd129bde6d"
 
-cli-cursor@^1.0.1:
+cli-cursor@^1.0.1, cli-cursor@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-1.0.2.tgz#64da3f7d56a54412e59794bd62dc35295e8f2987"
   dependencies:
     restore-cursor "^1.0.1"
 
+cli-spinners@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/cli-spinners/-/cli-spinners-0.1.2.tgz#bb764d88e185fb9e1e6a2a1f19772318f605e31c"
+
+cli-truncate@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/cli-truncate/-/cli-truncate-0.2.1.tgz#9f15cfbb0705005369216c626ac7d05ab90dd574"
+  dependencies:
+    slice-ansi "0.0.4"
+    string-width "^1.0.1"
+
 cli-width@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.1.0.tgz#b234ca209b29ef66fc518d9b98d5847b00edf00a"
@@ -1243,7 +1266,7 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@^2.8.1:
+commander@^2.8.1, commander@^2.9.0:
   version "2.9.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
   dependencies:
@@ -1340,6 +1363,19 @@ core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
+cosmiconfig@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-1.1.0.tgz#0dea0f9804efdfb929fbb1b188e25553ea053d37"
+  dependencies:
+    graceful-fs "^4.1.2"
+    js-yaml "^3.4.3"
+    minimist "^1.2.0"
+    object-assign "^4.0.1"
+    os-homedir "^1.0.1"
+    parse-json "^2.2.0"
+    pinkie-promise "^2.0.0"
+    require-from-string "^1.1.0"
+
 create-ecdh@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/create-ecdh/-/create-ecdh-4.0.0.tgz#888c723596cdf7612f6498233eebd7a35301737d"
@@ -1377,7 +1413,7 @@ cross-env@^4.0.0:
     cross-spawn "^5.1.0"
     is-windows "^1.0.0"
 
-cross-spawn@^5.1.0:
+cross-spawn@^5.0.1, cross-spawn@^5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
   dependencies:
@@ -1530,6 +1566,10 @@ dashdash@^1.12.0:
   dependencies:
     assert-plus "^1.0.0"
 
+date-fns@^1.27.2:
+  version "1.28.3"
+  resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-1.28.3.tgz#145d87adc3f5a82c6bda668de97eee1132c97ea1"
+
 date-now@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/date-now/-/date-now-0.1.4.tgz#eaf439fd4d4848ad74e5cc7dbef200672b9e345b"
@@ -1694,6 +1734,10 @@ electron-to-chromium@^1.2.7:
   version "1.3.8"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.8.tgz#b2c8a2c79bb89fbbfd3724d9555e15095b5f5fb6"
 
+elegant-spinner@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/elegant-spinner/-/elegant-spinner-1.0.1.tgz#db043521c95d7e303fd8f345bedc3349cfb0729e"
+
 element-class@^0.2.0:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/element-class/-/element-class-0.2.2.tgz#9d3bbd0767f9013ef8e1c8ebe722c1402a60050e"
@@ -2006,7 +2050,7 @@ estraverse@~4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.1.1.tgz#f6caca728933a850ef90661d0e17982ba47111a2"
 
-esutils@^2.0.0, esutils@^2.0.2:
+esutils@2.0.2, esutils@^2.0.0, esutils@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
 
@@ -2047,6 +2091,18 @@ exec-sh@^0.2.0:
   dependencies:
     merge "^1.1.3"
 
+execa@^0.6.0:
+  version "0.6.3"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.6.3.tgz#57b69a594f081759c69e5370f0d17b9cb11658fe"
+  dependencies:
+    cross-spawn "^5.0.1"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 exenv@1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/exenv/-/exenv-1.2.0.tgz#3835f127abf075bfe082d0aed4484057c78e3c89"
@@ -2158,7 +2214,7 @@ fbjs@^0.8.4, fbjs@^0.8.9:
     setimmediate "^1.0.5"
     ua-parser-js "^0.7.9"
 
-figures@^1.3.5:
+figures@^1.3.5, figures@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-1.7.0.tgz#cbe1e3affcf1cd44b80cadfed28dc793a9701d2e"
   dependencies:
@@ -2213,6 +2269,10 @@ find-cache-dir@^0.1.1:
     mkdirp "^0.5.1"
     pkg-dir "^1.0.0"
 
+find-parent-dir@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/find-parent-dir/-/find-parent-dir-0.3.0.tgz#33c44b429ab2b2f0646299c5f9f718f376ff8d54"
+
 find-up@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
@@ -2239,6 +2299,10 @@ flatten@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/flatten/-/flatten-1.0.2.tgz#dae46a9d78fbe25292258cc1e780a41d95c03782"
 
+flow-parser@0.43.0:
+  version "0.43.0"
+  resolved "https://registry.yarnpkg.com/flow-parser/-/flow-parser-0.43.0.tgz#e2b8eb1ac83dd53f7b6b04a7c35b6a52c33479b7"
+
 for-in@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -2344,6 +2408,14 @@ get-caller-file@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.2.tgz#f702e63127e7e231c160a80c1554acb70d5047e5"
 
+get-stdin@5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-5.0.1.tgz#122e161591e21ff4c52530305693f20e6393a398"
+
+get-stream@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
+
 getpass@^0.1.1:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.6.tgz#283ffd9fc1256840875311c1b60e8c40187110e6"
@@ -2363,7 +2435,7 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
-glob@^7.0.0, glob@^7.0.3, glob@^7.0.5:
+glob@7.1.1, glob@^7.0.0, glob@^7.0.3, glob@^7.0.5:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
   dependencies:
@@ -2567,6 +2639,15 @@ https-browserify@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
+husky@^0.13.3:
+  version "0.13.3"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-0.13.3.tgz#bc2066080badc8b8fe3516e881f5bc68a57052ff"
+  dependencies:
+    chalk "^1.1.3"
+    find-parent-dir "^0.3.0"
+    is-ci "^1.0.9"
+    normalize-path "^1.0.0"
+
 iconv-lite@0.4.13, iconv-lite@~0.4.13:
   version "0.4.13"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.13.tgz#1f88aba4ab0b1508e8312acc39345f36e992e2f2"
@@ -2587,6 +2668,16 @@ imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
 
+indent-string@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-2.1.0.tgz#8e2d48348742121b4a8218b7a137e9a52049dc80"
+  dependencies:
+    repeating "^2.0.0"
+
+indent-string@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-3.1.0.tgz#08ff4334603388399b329e6b9538dc7a3cf5de7d"
+
 indexes-of@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/indexes-of/-/indexes-of-1.0.1.tgz#f30f716c8e2bd346c7b67d3df3915566a7c05607"
@@ -2781,6 +2872,10 @@ is-primitive@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-primitive/-/is-primitive-2.0.0.tgz#207bab91638499c07b2adf240a41a87210034575"
 
+is-promise@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.1.0.tgz#79a2a9ece7f096e80f36d2b2f3bc16c1ff4bf3fa"
+
 is-property@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-property/-/is-property-1.0.2.tgz#57fe1c4e48474edd65b09911f26b1cd4095dda84"
@@ -2797,7 +2892,7 @@ is-resolvable@^1.0.0:
   dependencies:
     tryit "^1.0.1"
 
-is-stream@^1.0.1:
+is-stream@^1.0.1, is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
 
@@ -3101,6 +3196,15 @@ jest-util@^19.0.2:
     leven "^2.0.0"
     mkdirp "^0.5.1"
 
+jest-validate@19.0.0:
+  version "19.0.0"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-19.0.0.tgz#8c6318a20ecfeaba0ba5378bfbb8277abded4173"
+  dependencies:
+    chalk "^1.1.1"
+    jest-matcher-utils "^19.0.0"
+    leven "^2.0.0"
+    pretty-format "^19.0.0"
+
 jest-validate@^19.0.2:
   version "19.0.2"
   resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-19.0.2.tgz#dc534df5f1278d5b63df32b14241d4dbf7244c0c"
@@ -3124,7 +3228,7 @@ js-tokens@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.1.tgz#08e9f132484a2c45a30907e9dc4d5567b7f114d7"
 
-js-yaml@^3.5.1, js-yaml@^3.7.0:
+js-yaml@^3.4.3, js-yaml@^3.5.1, js-yaml@^3.7.0:
   version "3.8.3"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.8.3.tgz#33a05ec481c850c8875929166fe1beb61c728766"
   dependencies:
@@ -3248,6 +3352,64 @@ levn@^0.3.0, levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
+lint-staged@^3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/lint-staged/-/lint-staged-3.4.0.tgz#52fa85dfc92bb1c6fe8ad0d0d98ca13924e03e4b"
+  dependencies:
+    app-root-path "^2.0.0"
+    cosmiconfig "^1.1.0"
+    execa "^0.6.0"
+    listr "^0.11.0"
+    minimatch "^3.0.0"
+    npm-which "^3.0.1"
+    staged-git-files "0.0.4"
+
+listr-silent-renderer@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/listr-silent-renderer/-/listr-silent-renderer-1.1.1.tgz#924b5a3757153770bf1a8e3fbf74b8bbf3f9242e"
+
+listr-update-renderer@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/listr-update-renderer/-/listr-update-renderer-0.2.0.tgz#ca80e1779b4e70266807e8eed1ad6abe398550f9"
+  dependencies:
+    chalk "^1.1.3"
+    cli-truncate "^0.2.1"
+    elegant-spinner "^1.0.1"
+    figures "^1.7.0"
+    indent-string "^3.0.0"
+    log-symbols "^1.0.2"
+    log-update "^1.0.2"
+    strip-ansi "^3.0.1"
+
+listr-verbose-renderer@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/listr-verbose-renderer/-/listr-verbose-renderer-0.4.0.tgz#44dc01bb0c34a03c572154d4d08cde9b1dc5620f"
+  dependencies:
+    chalk "^1.1.3"
+    cli-cursor "^1.0.2"
+    date-fns "^1.27.2"
+    figures "^1.7.0"
+
+listr@^0.11.0:
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/listr/-/listr-0.11.0.tgz#5e778bc23806ac3ab984ed75564458151f39b03e"
+  dependencies:
+    chalk "^1.1.3"
+    cli-truncate "^0.2.1"
+    figures "^1.7.0"
+    indent-string "^2.1.0"
+    is-promise "^2.1.0"
+    is-stream "^1.1.0"
+    listr-silent-renderer "^1.1.1"
+    listr-update-renderer "^0.2.0"
+    listr-verbose-renderer "^0.4.0"
+    log-symbols "^1.0.2"
+    log-update "^1.0.2"
+    ora "^0.2.3"
+    rxjs "^5.0.0-beta.11"
+    stream-to-observable "^0.1.0"
+    strip-ansi "^3.0.1"
+
 load-json-file@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
@@ -3358,6 +3520,19 @@ lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.2.0, lodash@^4.3.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+log-symbols@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-1.0.2.tgz#376ff7b58ea3086a0f09facc74617eca501e1a18"
+  dependencies:
+    chalk "^1.0.0"
+
+log-update@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/log-update/-/log-update-1.0.2.tgz#19929f64c4093d2d2e7075a1dad8af59c296b8d1"
+  dependencies:
+    ansi-escapes "^1.0.0"
+    cli-cursor "^1.0.2"
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -3469,7 +3644,7 @@ minimist@0.0.8, minimist@~0.0.1:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
-minimist@^1.1.1, minimist@^1.2.0:
+minimist@1.2.0, minimist@^1.1.1, minimist@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
@@ -3585,6 +3760,10 @@ normalize-package-data@^2.3.2:
     semver "2 || 3 || 4 || 5"
     validate-npm-package-license "^3.0.1"
 
+normalize-path@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-1.0.0.tgz#32d0e472f91ff345701c15a8311018d3b0a90379"
+
 normalize-path@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-2.1.1.tgz#1ab28b556e198363a8c1a6f7e6fa20137fe6aed9"
@@ -3604,6 +3783,26 @@ normalize-url@^1.4.0:
     query-string "^4.1.0"
     sort-keys "^1.0.0"
 
+npm-path@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/npm-path/-/npm-path-2.0.3.tgz#15cff4e1c89a38da77f56f6055b24f975dfb2bbe"
+  dependencies:
+    which "^1.2.10"
+
+npm-run-path@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
+  dependencies:
+    path-key "^2.0.0"
+
+npm-which@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/npm-which/-/npm-which-3.0.1.tgz#9225f26ec3a285c209cae67c3b11a6b4ab7140aa"
+  dependencies:
+    commander "^2.9.0"
+    npm-path "^2.0.2"
+    which "^1.2.10"
+
 npmlog@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.0.2.tgz#d03950e0e78ce1527ba26d2a7592e9348ac3e75f"
@@ -3729,6 +3928,15 @@ optionator@^0.8.1, optionator@^0.8.2:
     type-check "~0.3.2"
     wordwrap "~1.0.0"
 
+ora@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/ora/-/ora-0.2.3.tgz#37527d220adcd53c39b73571d754156d5db657a4"
+  dependencies:
+    chalk "^1.1.1"
+    cli-cursor "^1.0.2"
+    cli-spinners "^0.1.2"
+    object-assign "^4.0.1"
+
 original@>=0.0.5:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/original/-/original-1.0.0.tgz#9147f93fa1696d04be61e01bd50baeaca656bd3b"
@@ -3739,7 +3947,7 @@ os-browserify@^0.2.0:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/os-browserify/-/os-browserify-0.2.1.tgz#63fc4ccee5d2d7763d26bbf8601078e6c2e0044f"
 
-os-homedir@^1.0.0:
+os-homedir@^1.0.0, os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
@@ -3768,6 +3976,10 @@ output-file-sync@^1.1.0:
     mkdirp "^0.5.1"
     object-assign "^4.1.0"
 
+p-finally@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
+
 p-limit@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.1.0.tgz#b07ff2d9a5d88bec806035895a2bab66a27988bc"
@@ -3837,6 +4049,10 @@ path-is-inside@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
 
+path-key@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
+
 path-parse@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.5.tgz#3c1adf871ea9cd6c9431b6ea2bd74a0ff055c4c1"
@@ -4151,6 +4367,21 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
+prettier@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.2.2.tgz#22d17c1132faaaea1f1d4faea31f19f7a1959f3e"
+  dependencies:
+    ast-types "0.9.8"
+    babel-code-frame "6.22.0"
+    babylon "7.0.0-beta.8"
+    chalk "1.1.3"
+    esutils "2.0.2"
+    flow-parser "0.43.0"
+    get-stdin "5.0.1"
+    glob "7.1.1"
+    jest-validate "19.0.0"
+    minimist "1.2.0"
+
 pretty-format@^19.0.0:
   version "19.0.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-19.0.0.tgz#56530d32acb98a3fa4851c4e2b9d37b420684c84"
@@ -4473,6 +4704,10 @@ require-directory@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
 
+require-from-string@^1.1.0:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-1.2.1.tgz#529c9ccef27380adfec9a2f965b649bbee636418"
+
 require-main-filename@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
@@ -4535,6 +4770,12 @@ rx-lite@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-3.1.2.tgz#19ce502ca572665f3b647b10939f97fd1615f102"
 
+rxjs@^5.0.0-beta.11:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.3.0.tgz#d88ccbdd46af290cbdb97d5d8055e52453fabe2d"
+  dependencies:
+    symbol-observable "^1.0.1"
+
 safe-buffer@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.0.1.tgz#d263ca54696cd8a306b5ca6551e92de57918fbe7"
@@ -4775,6 +5016,10 @@ sshpk@^1.7.0:
     jsbn "~0.1.0"
     tweetnacl "~0.14.0"
 
+staged-git-files@0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/staged-git-files/-/staged-git-files-0.0.4.tgz#d797e1b551ca7a639dec0237dc6eb4bb9be17d35"
+
 "statuses@>= 1.3.1 < 2", statuses@~1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
@@ -4796,6 +5041,10 @@ stream-http@^2.3.1:
     to-arraybuffer "^1.0.0"
     xtend "^4.0.0"
 
+stream-to-observable@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/stream-to-observable/-/stream-to-observable-0.1.0.tgz#45bf1d9f2d7dc09bed81f1c307c430e68b84cffe"
+
 strict-uri-encode@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
@@ -4851,6 +5100,10 @@ strip-bom@^2.0.0:
   dependencies:
     is-utf8 "^0.2.0"
 
+strip-eof@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
+
 strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
@@ -4883,6 +5136,10 @@ svgo@^0.7.0:
     sax "~1.2.1"
     whet.extend "~0.9.9"
 
+symbol-observable@^1.0.1:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.4.tgz#29bf615d4aa7121bdd898b22d4b3f9bc4e2aa03d"
+
 symbol-tree@^3.2.1:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
@@ -5275,7 +5532,7 @@ which-module@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"
 
-which@^1.1.1, which@^1.2.12, which@^1.2.9:
+which@^1.1.1, which@^1.2.10, which@^1.2.12, which@^1.2.9:
   version "1.2.14"
   resolved "https://registry.yarnpkg.com/which/-/which-1.2.14.tgz#9a87c4378f03e827cecaf1acdf56c736c01c14e5"
   dependencies: