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| const getStyleLoaders = (cssOptions, preProcessor) => { const loaders = [ isEnvDevelopment && require.resolve('style-loader'), isEnvProduction && { loader: MiniCssExtractPlugin.loader, options: shouldUseRelativeAssetPaths ? { publicPath: '../../' } : {}, }, { loader: require.resolve('css-loader'), options: cssOptions, }, { // Options for PostCSS as we reference these options twice // Adds vendor prefixing based on your specified browser support in // package.json loader: require.resolve('postcss-loader'), options: { // Necessary for external CSS imports to work // https://github.com/facebook/create-react-app/issues/2677 ident: 'postcss', plugins: () => [ require('postcss-flexbugs-fixes'), require('postcss-preset-env')({ autoprefixer: { flexbox: 'no-2009', }, stage: 3, }), // Adds PostCSS Normalize as the reset css with default options, // so that it honors browserslist config in package.json // which in turn let's users customize the target behavior as per their needs. postcssNormalize(), ], sourceMap: isEnvProduction && shouldUseSourceMap, }, }, ].filter(Boolean); if (preProcessor) { loaders.push( { loader: require.resolve('resolve-url-loader'), options: { sourceMap: isEnvProduction && shouldUseSourceMap, }, }, { loader: require.resolve(preProcessor), options: { sourceMap: true, javascriptEnabled: true // 增加这句 }, } ); } return loaders; };
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