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use uglifyjs-webpack-plugin v1 #3618

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merged 1 commit into from
Jan 11, 2018
Merged

use uglifyjs-webpack-plugin v1 #3618

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42 changes: 25 additions & 17 deletions packages/react-scripts/config/webpack.config.prod.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ const autoprefixer = require('autoprefixer');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const ManifestPlugin = require('webpack-manifest-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
Expand Down Expand Up @@ -290,24 +291,31 @@ module.exports = {
// Otherwise React will be compiled in the very slow development mode.
new webpack.DefinePlugin(env.stringified),
// Minify the code.
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false,
// Disabled because of an issue with Uglify breaking seemingly valid code:
// https://github.com/facebookincubator/create-react-app/issues/2376
// Pending further investigation:
// https://github.com/mishoo/UglifyJS2/issues/2011
comparisons: false,
},
mangle: {
safari10: true,
},
output: {
comments: false,
// Turned on because emoji and regex is not minified properly using default
// https://github.com/facebookincubator/create-react-app/issues/2488
ascii_only: true,
new UglifyJsPlugin({
uglifyOptions: {
compress: {
warnings: false,
// Disabled because of an issue with Uglify breaking seemingly valid code:
// https://github.com/facebookincubator/create-react-app/issues/2376
// Pending further investigation:
// https://github.com/mishoo/UglifyJS2/issues/2011
comparisons: false,
},
mangle: {
safari10: true,
},
output: {
comments: false,
// Turned on because emoji and regex is not minified properly using default
// https://github.com/facebookincubator/create-react-app/issues/2488
ascii_only: true,
},
},
// Use multi-process parallel running to improve the build speed
// Default number of concurrent runs: os.cpus().length - 1
parallel: true,
// Enable file caching
cache: true,
sourceMap: shouldUseSourceMap,
}),
// Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
Expand Down
1 change: 1 addition & 0 deletions packages/react-scripts/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@
"react-dev-utils": "^4.2.1",
"style-loader": "0.19.0",
"sw-precache-webpack-plugin": "0.11.4",
"uglifyjs-webpack-plugin": "1.1.4",
"url-loader": "0.6.2",
"webpack": "3.8.1",
"webpack-dev-server": "2.9.4",
Expand Down