Only load Intl data for current language (#3130)

* Only load Intl data for current language

* Extract common chunk only from application.js and public.js

* Generate locale packs, avoid caching on window object

1 files changed, 16 insertions, 3 deletions

diff --git a/config/webpack/shared.js b/config/webpack/shared.js
index 4986ea24d..1d75e2af2 100644
--- a/config/webpack/shared.js
+++ b/config/webpack/shared.js
@@ -10,15 +10,20 @@ const ExtractTextPlugin = require('extract-text-webpack-plugin');
 const ManifestPlugin = require('webpack-manifest-plugin');
 const extname = require('path-complete-extname');
 const { env, paths, publicPath, loadersDir } = require('./configuration.js');
+const localePackPaths = require('./generateLocalePacks');
 
 const extensionGlob = `**/*{${paths.extensions.join(',')}}*`;
 const packPaths = sync(join(paths.source, paths.entry, extensionGlob));
+const entryPacks = [].concat(packPaths).concat(localePackPaths);
 
 module.exports = {
-  entry: packPaths.reduce(
+  entry: entryPacks.reduce(
     (map, entry) => {
       const localMap = map;
-      const namespace = relative(join(paths.source, paths.entry), dirname(entry));
+      let namespace = relative(join(paths.source, paths.entry), dirname(entry));
+      if (namespace === '../../../tmp/packs') {
+        namespace = ''; // generated by generateLocalePacks.js
+      }
       localMap[join(namespace, basename(entry, extname(entry)))] = resolve(entry);
       return localMap;
     }, {}
@@ -41,7 +46,15 @@ module.exports = {
     new ManifestPlugin({ fileName: paths.manifest, publicPath, writeToFileEmit: true }),
     new webpack.optimize.CommonsChunkPlugin({
       name: 'common',
-      minChunks: 2,
+      minChunks: (module, count) => {
+        if (module.resource && /node_modules\/react-intl/.test(module.resource)) {
+          // skip react-intl because it's useless to put in the common chunk,
+          // e.g. because "shared" modules between zh-TW and zh-CN will never
+          // be loaded together
+          return false;
+        }
+        return count >= 2;
+      },
     }),
   ],