66 lines
2.3 KiB
JavaScript
66 lines
2.3 KiB
JavaScript
const { merge } = require('webpack-merge')
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const common = require('./webpack.common')
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const MiniCssExtractPlugin = require('mini-css-extract-plugin')
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const TerserPlugin = require('terser-webpack-plugin')
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const CssMinimizerPlugin = require('css-minimizer-webpack-plugin')
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module.exports = merge(common, {
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mode: 'production',
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output: {
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fileName: 'static/js/[name].[contenthash:8].js',
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chunkFilename: 'static/js/[name].[contenthash:8].chunk.js',
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},
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optimization: {
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minimize: true,
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minimizer: [
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new TerserPlugin({
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terserOptions: {
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parse: {
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// We want terser to parse ecma 8 code. However, we don't want it
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// to apply any minification steps that turns valid ecma 5 code
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// into invalid ecma 5 code. This is why the 'compress' and 'output'
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// sections only apply transformations that are ecma 5 safe
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// https://github.com/facebook/create-react-app/pull/4234
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ecma: 8,
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},
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compress: {
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ecma: 5,
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warnings: false,
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// Disabled because of an issue with Uglify breaking seemingly valid code:
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// https://github.com/facebook/create-react-app/issues/2376
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// Pending further investigation:
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// https://github.com/mishoo/UglifyJS2/issues/2011
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comparisons: false,
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// Disabled because of an issue with Terser breaking valid code:
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// https://github.com/facebook/create-react-app/issues/5250
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// Pending further investigation:
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// https://github.com/terser-js/terser/issues/120
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inline: 2,
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},
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mangle: {
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safari10: true,
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},
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// Added for profiling in devtools
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keep_classnames: false,
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keep_fnames: false,
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output: {
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ecma: 5,
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comments: false,
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// Turned on because emoji and regex is not minified properly using default
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// https://github.com/facebook/create-react-app/issues/2488
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ascii_only: true,
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},
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},
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}),
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new CssMinimizerPlugin(),
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],
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},
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plugins: [
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new MiniCssExtractPlugin({
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filename: 'static/css/[name].[contenthash:8].css',
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chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
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}),
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],
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})
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