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@@ -8,41 +8,13 @@ const optimization = {
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minimize: isProduction,
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minimizer: [
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new TerserPlugin({
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+ extractComments: false,
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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: isProduction,
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- keep_fnames: isProduction,
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- output: {
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- ecma: 5,
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+ format: {
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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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