Smaller production builds

Builds on the exclusion of PropTypes from production builds:

- Remove 'lodash' and use smaller modules for equivalent functions.
- Remove use of some unnecessary Facebook utilities.
- Remove 'TouchableBounce'; it isn't part of React Native anymore.
- Remove stray import of 'react-dom/server'.
- Exclude 'StyleSheetValidation' from production.

Measuring the UMD build (gzip)…

Before: ~100KB
After: ~60KB

Author: necolas

examples/demos/Game2048/Game2048.js

@@ -23,7 +23,7 @@ var {
   AppRegistry,
   StyleSheet,
   Text,
-  TouchableBounce,
+  TouchableOpacity,
   View,
 } = ReactNative;
 
@@ -139,9 +139,9 @@ class GameEndOverlay extends React.Component {
     return (
       <View style={styles.overlay}>
         <Text style={styles.overlayMessage}>{message}</Text>
-        <TouchableBounce onPress={this.props.onRestart} style={styles.tryAgain}>
+        <TouchableOpacity onPress={this.props.onRestart} style={styles.tryAgain}>
           <Text style={styles.tryAgainText}>Try Again?</Text>
-        </TouchableBounce>
+        </TouchableOpacity>
       </View>
     );
   }

package.json

@@ -19,11 +19,13 @@
   },
   "dependencies": {
     "animated": "^0.1.3",
+    "array-find-index": "^1.0.2",
     "babel-plugin-transform-react-remove-prop-types": "^0.2.11",
     "babel-runtime": "^6.11.6",
+    "debounce": "^1.0.0",
+    "deep-assign": "^2.0.0",
     "fbjs": "^0.8.4",
     "inline-style-prefixer": "^2.0.1",
-    "lodash": "^4.15.0",
     "react-dom": "~15.3.2",
     "react-textarea-autosize": "^4.0.4",
     "react-timer-mixin": "^0.13.3",

src/apis/AppRegistry/index.js

@@ -9,7 +9,7 @@
 import { Component } from 'react';
 import invariant from 'fbjs/lib/invariant';
 import { unmountComponentAtNode } from 'react/lib/ReactMount';
-import renderApplication, { prerenderApplication } from './renderApplication';
+import renderApplication, { getApplication } from './renderApplication';
 
 const runnables = {};
 

src/apis/AppRegistry/renderApplication.js

@@ -8,7 +8,6 @@
 
 import invariant from 'fbjs/lib/invariant';
 import { render } from 'react/lib/ReactMount';
-import ReactDOMServer from 'react-dom/server';
 import ReactNativeApp from './ReactNativeApp';
 import StyleSheet from '../../apis/StyleSheet';
 import React, { Component } from 'react';

src/apis/AppState/index.js

@@ -1,5 +1,5 @@
 import ExecutionEnvironment from 'fbjs/lib/ExecutionEnvironment';
-import findIndex from 'lodash/findIndex';
+import findIndex from 'array-find-index';
 import invariant from 'fbjs/lib/invariant';
 
 const EVENT_TYPES = [ 'change' ];

src/apis/AsyncStorage/index.js

@@ -3,7 +3,7 @@
  * Copyright (c) 2015-present, Facebook, Inc.
  * All rights reserved.
  */
-import merge from 'lodash/merge';
+import merge from 'deep-assign';
 
 const mergeLocalStorageItem = (key, value) => {
   const oldValue = window.localStorage.getItem(key);

src/apis/Dimensions/index.js

@@ -6,7 +6,7 @@
  * @flow
  */
 
-import debounce from 'lodash/debounce';
+import debounce from 'debounce';
 import ExecutionEnvironment from 'fbjs/lib/ExecutionEnvironment';
 import invariant from 'fbjs/lib/invariant';
 

src/apis/InteractionManager/index.js

@@ -6,13 +6,12 @@
  */
 
 import invariant from 'fbjs/lib/invariant';
-import keyMirror from 'fbjs/lib/keyMirror';
 
 const InteractionManager = {
-  Events: keyMirror({
-    interactionStart: true,
-    interactionComplete: true
-  }),
+  Events: {
+    interactionStart: 'interactionStart',
+    interactionComplete: 'interactionComplete'
+  },
 
   /**
    * Schedule a function to run after all interactions have completed.

src/apis/NetInfo/index.js

@@ -7,7 +7,7 @@
  */
 
 import ExecutionEnvironment from 'fbjs/lib/ExecutionEnvironment';
-import findIndex from 'lodash/findIndex';
+import findIndex from 'array-find-index';
 import invariant from 'fbjs/lib/invariant';
 
 const connection = ExecutionEnvironment.canUseDOM && (

src/apis/StyleSheet/__tests__/index-test.js

@@ -1,9 +1,19 @@
 /* eslint-env jasmine, jest */
 
 import { getDefaultStyleSheet } from '../css';
-import isPlainObject from 'lodash/isPlainObject';
 import StyleSheet from '..';
 
+const isPlainObject = (x) => {
+  const toString = Object.prototype.toString;
+  let proto;
+  /* eslint-disable */
+  return (
+    toString.call(x) === '[object Object]' &&
+    (proto = Object.getPrototypeOf(x), proto === null || proto === Object.getPrototypeOf({}))
+  );
+  /* eslint-enable */
+};
+
 describe('apis/StyleSheet', () => {
   beforeEach(() => {
     StyleSheet._reset();

src/apis/StyleSheet/index.js

@@ -4,7 +4,6 @@ import ExecutionEnvironment from 'fbjs/lib/ExecutionEnvironment';
 import flattenStyle from '../../modules/flattenStyle';
 import React from 'react';
 import ReactNativePropRegistry from '../../modules/ReactNativePropRegistry';
-import StyleSheetValidation from './StyleSheetValidation';
 
 let styleElement;
 let shouldInsertStyleSheet = ExecutionEnvironment.canUseDOM;
@@ -52,7 +51,9 @@ module.exports = {
 
     const result = {};
     for (const key in styles) {
-      StyleSheetValidation.validateStyle(key, styles);
+      if (process.env.NODE_ENV !== 'production') {
+        require('./StyleSheetValidation').validateStyle(key, styles);
+      }
       result[key] = ReactNativePropRegistry.register(styles[key]);
     }
     return result;

src/components/ListView/index.js

@@ -1,13 +1,10 @@
 import applyNativeMethods from '../../modules/applyNativeMethods';
 import ListViewDataSource from './ListViewDataSource';
 import ListViewPropTypes from './ListViewPropTypes';
-import pick from 'lodash/pick';
 import ScrollView from '../ScrollView';
 import View from '../View';
 import React, { Component } from 'react';
 
-const scrollViewProps = Object.keys(ScrollView.propTypes);
-
 class ListView extends Component {
   static propTypes = ListViewPropTypes;
 
@@ -90,9 +87,7 @@ class ListView extends Component {
       }
     }
 
-    const props = pick(this.props, scrollViewProps);
-
-    return React.cloneElement(this.props.renderScrollComponent(props), {
+    return React.cloneElement(this.props.renderScrollComponent(this.props), {
       ref: this._setScrollViewRef
     }, header, children, footer);
   }

src/components/ScrollView/ScrollViewBase.js

@@ -6,7 +6,7 @@
  * @flow
  */
 
-import debounce from 'lodash/debounce';
+import debounce from 'debounce';
 import View from '../View';
 import React, { Component, PropTypes } from 'react';
 

src/components/Touchable/Touchable.js

@@ -14,7 +14,6 @@
 
 /* @edit start */
 const BoundingDimensions = require('./BoundingDimensions');
-const keyMirror = require('fbjs/lib/keyMirror');
 const normalizeColor = require('../../modules/normalizeColor');
 const Position = require('./Position');
 const React = require('react');
@@ -111,16 +110,16 @@ const View = require('../../components/View');
 /**
  * Touchable states.
  */
-var States = keyMirror({
-  NOT_RESPONDER: null,                   // Not the responder
-  RESPONDER_INACTIVE_PRESS_IN: null,     // Responder, inactive, in the `PressRect`
-  RESPONDER_INACTIVE_PRESS_OUT: null,    // Responder, inactive, out of `PressRect`
-  RESPONDER_ACTIVE_PRESS_IN: null,       // Responder, active, in the `PressRect`
-  RESPONDER_ACTIVE_PRESS_OUT: null,      // Responder, active, out of `PressRect`
-  RESPONDER_ACTIVE_LONG_PRESS_IN: null,  // Responder, active, in the `PressRect`, after long press threshold
-  RESPONDER_ACTIVE_LONG_PRESS_OUT: null, // Responder, active, out of `PressRect`, after long press threshold
-  ERROR: null
-});
+var States = {
+  NOT_RESPONDER: 'NOT_RESPONDER',                                     // Not the responder
+  RESPONDER_INACTIVE_PRESS_IN: 'RESPONDER_INACTIVE_PRESS_IN',         // Responder, inactive, in the `PressRect`
+  RESPONDER_INACTIVE_PRESS_OUT: 'RESPONDER_INACTIVE_PRESS_OUT',       // Responder, inactive, out of `PressRect`
+  RESPONDER_ACTIVE_PRESS_IN: 'RESPONDER_ACTIVE_PRESS_IN',             // Responder, active, in the `PressRect`
+  RESPONDER_ACTIVE_PRESS_OUT: 'RESPONDER_ACTIVE_PRESS_OUT',           // Responder, active, out of `PressRect`
+  RESPONDER_ACTIVE_LONG_PRESS_IN: 'RESPONDER_ACTIVE_LONG_PRESS_IN',   // Responder, active, in the `PressRect`, after long press threshold
+  RESPONDER_ACTIVE_LONG_PRESS_OUT: 'RESPONDER_ACTIVE_LONG_PRESS_OUT', // Responder, active, out of `PressRect`, after long press threshold
+  ERROR: 'ERROR'
+};
 
 /**
  * Quick lookup map for states that are considered to be "active"
@@ -147,15 +146,15 @@ var IsLongPressingIn = {
 /**
  * Inputs to the state machine.
  */
-var Signals = keyMirror({
-  DELAY: null,
-  RESPONDER_GRANT: null,
-  RESPONDER_RELEASE: null,
-  RESPONDER_TERMINATED: null,
-  ENTER_PRESS_RECT: null,
-  LEAVE_PRESS_RECT: null,
-  LONG_PRESS_DETECTED: null,
-});
+var Signals = {
+  DELAY: 'DELAY',
+  RESPONDER_GRANT: 'RESPONDER_GRANT',
+  RESPONDER_RELEASE: 'RESPONDER_RELEASE',
+  RESPONDER_TERMINATED: 'RESPONDER_TERMINATED',
+  ENTER_PRESS_RECT: 'ENTER_PRESS_RECT',
+  LEAVE_PRESS_RECT: 'LEAVE_PRESS_RECT',
+  LONG_PRESS_DETECTED: 'LONG_PRESS_DETECTED',
+};
 
 /**
  * Mapping from States x Signals => States