Consume react, fbjs from npm

Summary:
We don't (yet) treat these the same as any other modules because we still have special resolution rules for them in the packager allowing the use of `providesModule`, but I believe this allows people to use npm react in their RN projects and not have duplicate copies of React. Fixes facebook/react-native#2985.

This relies on fbjs 0.6, which includes `.flow` files alongside the `.js` files to allow them to be typechecked without additional configuration. This also uses react 0.14.5, which shims a couple of files (as `.native.js`) to avoid DOM-specific bits. Once we fix these in React, we will use the same code on web and native. Hopefully we can also remove the packager support I'm adding here for `.native.js`.

This diff is not the desired end state for us – ideally the packager would know nothing of react or fbjs, and we'll get there eventually by not relying on `providesModule` in order to load react and fbjs modules. (fbjs change posted here but not merged yet: https://github.com/facebook/fbjs/pull/84.)

This should also allow relay to work seamlessly with RN, but I haven't verified this.

public

Reviewed By: sebmarkbage

Differential Revision: D2786197

fb-gh-sync-id: ff50f28445e949edc9501f4b599df7970813870d

blacklist.js

@@ -13,36 +13,41 @@ var path = require('path');
 // Don't forget to everything listed here to `testConfig.json`
 // modulePathIgnorePatterns.
 var sharedBlacklist = [
-  'node_modules/react-haste/renderers/shared/event/eventPlugins/ResponderEventPlugin.js',
-  'node_modules/react-haste/React.js',
-  'node_modules/react-haste/renderers/dom/ReactDOM.js',
+  /node_modules[/\\]react[/\\]dist[/\\].*/,
+  'node_modules/react/lib/React.js',
+  'node_modules/react/lib/ReactDOM.js',
 
   // For each of these fbjs files (especially the non-forks/stubs), we should
   // consider deleting the conflicting copy and just using the fbjs version.
-  'node_modules/fbjs-haste/__forks__/Map.js',
-  'node_modules/fbjs-haste/__forks__/Promise.js',
-  'node_modules/fbjs-haste/__forks__/fetch.js',
-  'node_modules/fbjs-haste/core/Deferred.js',
-  'node_modules/fbjs-haste/core/PromiseMap.js',
-  'node_modules/fbjs-haste/core/areEqual.js',
-  'node_modules/fbjs-haste/core/flattenArray.js',
-  'node_modules/fbjs-haste/core/isEmpty.js',
-  'node_modules/fbjs-haste/core/removeFromArray.js',
-  'node_modules/fbjs-haste/core/resolveImmediate.js',
-  'node_modules/fbjs-haste/core/sprintf.js',
-  'node_modules/fbjs-haste/crypto/crc32.js',
-  'node_modules/fbjs-haste/fetch/fetchWithRetries.js',
-  'node_modules/fbjs-haste/functional/everyObject.js',
-  'node_modules/fbjs-haste/functional/filterObject.js',
-  'node_modules/fbjs-haste/functional/forEachObject.js',
-  'node_modules/fbjs-haste/functional/someObject.js',
-  'node_modules/fbjs-haste/request/xhrSimpleDataSerializer.js',
-  'node_modules/fbjs-haste/stubs/ErrorUtils.js',
-  'node_modules/fbjs-haste/stubs/URI.js',
-  'node_modules/fbjs-haste/useragent/UserAgent.js',
-  'node_modules/fbjs-haste/utils/nullthrows.js',
+  //
+  // fbjs forks:
+  'node_modules/fbjs/lib/Map.js',
+  'node_modules/fbjs/lib/Promise.js',
+  'node_modules/fbjs/lib/fetch.js',
+  // fbjs stubs:
+  'node_modules/fbjs/lib/ErrorUtils.js',
+  'node_modules/fbjs/lib/URI.js',
+  // fbjs modules:
+  'node_modules/fbjs/lib/Deferred.js',
+  'node_modules/fbjs/lib/PromiseMap.js',
+  'node_modules/fbjs/lib/UserAgent.js',
+  'node_modules/fbjs/lib/areEqual.js',
+  'node_modules/fbjs/lib/base62.js',
+  'node_modules/fbjs/lib/crc32.js',
+  'node_modules/fbjs/lib/everyObject.js',
+  'node_modules/fbjs/lib/fetchWithRetries.js',
+  'node_modules/fbjs/lib/filterObject.js',
+  'node_modules/fbjs/lib/flattenArray.js',
+  'node_modules/fbjs/lib/forEachObject.js',
+  'node_modules/fbjs/lib/isEmpty.js',
+  'node_modules/fbjs/lib/nullthrows.js',
+  'node_modules/fbjs/lib/removeFromArray.js',
+  'node_modules/fbjs/lib/resolveImmediate.js',
+  'node_modules/fbjs/lib/someObject.js',
+  'node_modules/fbjs/lib/sprintf.js',
+  'node_modules/fbjs/lib/xhrSimpleDataSerializer.js',
 
-  // Those conflicts with the ones in fbjs-haste/. We need to blacklist the
+  // Those conflicts with the ones in fbjs/. We need to blacklist the
   // internal version otherwise they won't work in open source.
   'downstream/core/CSSCore.js',
   'downstream/core/TouchEventUtils.js',
@@ -63,11 +68,8 @@ var sharedBlacklist = [
   'downstream/core/invariant.js',
   'downstream/core/nativeRequestAnimationFrame.js',
   'downstream/core/toArray.js',
-];
 
-// Raw unescaped patterns in case you need to use wildcards
-var sharedBlacklistWildcards = [
-  'website\/node_modules\/.*',
+  /website\/node_modules\/.*/,
 ];
 
 var platformBlacklists = {
@@ -85,10 +87,16 @@ var platformBlacklists = {
   ],
 };
 
-function escapeRegExp(str) {
-  var escaped = str.replace(/[\-\[\]\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
-  // convert the '/' into an escaped local file separator
-  return escaped.replace(/\//g,'\\' + path.sep);
+function escapeRegExp(pattern) {
+  if (Object.prototype.toString.call(pattern) === '[object RegExp]') {
+    return pattern.source;
+  } else if (typeof pattern === 'string') {
+    var escaped = pattern.replace(/[\-\[\]\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
+    // convert the '/' into an escaped local file separator
+    return escaped.replace(/\//g,'\\' + path.sep);
+  } else {
+    throw new Error('Unexpected packager blacklist pattern: ' + pattern);
+  }
 }
 
 function blacklist(platform, additionalBlacklist) {
@@ -96,7 +104,6 @@ function blacklist(platform, additionalBlacklist) {
     (additionalBlacklist || []).concat(sharedBlacklist)
       .concat(platformBlacklists[platform] || [])
       .map(escapeRegExp)
-      .concat(sharedBlacklistWildcards)
       .join('|') +
     ')$'
   );

react-packager/src/DependencyResolver/DependencyGraph/HasteMap.js

@@ -12,12 +12,20 @@ const getPlatformExtension = require('../lib/getPlatformExtension');
 const Promise = require('promise');
 
 const GENERIC_PLATFORM = 'generic';
+const NATIVE_PLATFORM = 'native';
 
 class HasteMap {
-  constructor({ extensions, fastfs, moduleCache, helpers }) {
+  constructor({
+    extensions,
+    fastfs,
+    moduleCache,
+    preferNativePlatform,
+    helpers,
+  }) {
     this._extensions = extensions;
     this._fastfs = fastfs;
     this._moduleCache = moduleCache;
+    this._preferNativePlatform = preferNativePlatform;
     this._helpers = helpers;
   }
 
@@ -73,18 +81,19 @@ class HasteMap {
       return null;
     }
 
-    // If no platform is given we choose the generic platform module list.
-    // If a platform is given and no modules exist we fallback
-    // to the generic platform module list.
-    if (platform == null) {
-      return modulesMap[GENERIC_PLATFORM];
-    } else {
-      let module = modulesMap[platform];
-      if (module == null) {
-        module = modulesMap[GENERIC_PLATFORM];
-      }
-      return module;
+    // If platform is 'ios', we prefer .ios.js to .native.js which we prefer to
+    // a plain .js file.
+    let module = undefined;
+    if (module == null && platform != null) {
+      module = modulesMap[platform];
     }
+    if (module == null && this._preferNativePlatform) {
+      module = modulesMap[NATIVE_PLATFORM];
+    }
+    if (module == null) {
+      module = modulesMap[GENERIC_PLATFORM];
+    }
+    return module;
   }
 
   _processHasteModule(file) {

react-packager/src/DependencyResolver/DependencyGraph/ResolutionRequest.js

@@ -18,6 +18,7 @@ const Promise = require('promise');
 class ResolutionRequest {
   constructor({
     platform,
+    preferNativePlatform,
     entryPath,
     hasteMap,
     deprecatedAssetMap,
@@ -26,6 +27,7 @@ class ResolutionRequest {
     fastfs,
   }) {
     this._platform = platform;
+    this._preferNativePlatform = preferNativePlatform;
     this._entryPath = entryPath;
     this._hasteMap = hasteMap;
     this._deprecatedAssetMap = deprecatedAssetMap;
@@ -329,6 +331,9 @@ class ResolutionRequest {
       } else if (this._platform != null &&
                  this._fastfs.fileExists(potentialModulePath + '.' + this._platform + '.js')) {
         file = potentialModulePath + '.' + this._platform + '.js';
+      } else if (this._preferNativePlatform &&
+                 this._fastfs.fileExists(potentialModulePath + '.native.js')) {
+        file = potentialModulePath + '.native.js';
       } else if (this._fastfs.fileExists(potentialModulePath + '.js')) {
         file = potentialModulePath + '.js';
       } else if (this._fastfs.fileExists(potentialModulePath + '.json')) {

react-packager/src/DependencyResolver/DependencyGraph/index.js

@@ -37,6 +37,7 @@ class DependencyGraph {
     assetExts,
     providesModuleNodeModules,
     platforms,
+    preferNativePlatform,
     cache,
     extensions,
     mocksPattern,
@@ -51,6 +52,7 @@ class DependencyGraph {
       assetExts: assetExts || [],
       providesModuleNodeModules,
       platforms: platforms || [],
+      preferNativePlatform: preferNativePlatform || false,
       cache,
       extensions: extensions || ['js', 'json'],
       mocksPattern,
@@ -105,7 +107,7 @@ class DependencyGraph {
       fastfs: this._fastfs,
       extensions: this._opts.extensions,
       moduleCache: this._moduleCache,
-      assetExts: this._opts.exts,
+      preferNativePlatform: this._opts.preferNativePlatform,
       helpers: this._helpers,
     });
 
@@ -147,6 +149,7 @@ class DependencyGraph {
       const absPath = this._getAbsolutePath(entryPath);
       const req = new ResolutionRequest({
         platform,
+        preferNativePlatform: this._opts.preferNativePlatform,
         entryPath: absPath,
         deprecatedAssetMap: this._deprecatedAssetMap,
         hasteMap: this._hasteMap,

react-packager/src/Resolver/index.js

@@ -81,8 +81,8 @@ class Resolver {
           (opts.blacklistRE && opts.blacklistRE.test(filepath));
       },
       providesModuleNodeModules: [
-        'fbjs-haste',
-        'react-haste',
+        'fbjs',
+        'react',
         'react-native',
         // Parse requires AsyncStorage. They will
         // change that to require('react-native') which
@@ -92,6 +92,7 @@ class Resolver {
         'react-transform-hmr',
       ],
       platforms: ['ios', 'android'],
+      preferNativePlatform: true,
       fileWatcher: opts.fileWatcher,
       cache: opts.cache,
     });