1 | // @remove-on-eject-begin
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2 | /**
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3 | * Copyright (c) 2015-present, Facebook, Inc.
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4 | *
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5 | * This source code is licensed under the MIT license found in the
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6 | * LICENSE file in the root directory of this source tree.
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7 | */
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8 | // @remove-on-eject-end
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9 | ;
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10 |
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11 | const fs = require('fs');
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12 | const path = require('path');
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13 | const webpack = require('webpack');
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14 | const resolve = require('resolve');
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15 | const PnpWebpackPlugin = require('pnp-webpack-plugin');
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16 | const HtmlWebpackPlugin = require('html-webpack-plugin');
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17 | const InlineChunkHtmlPlugin = require('react-dev-utils/InlineChunkHtmlPlugin');
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18 | const TerserPlugin = require('terser-webpack-plugin');
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19 | const MiniCssExtractPlugin = require('mini-css-extract-plugin');
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20 | const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
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21 | const safePostCssParser = require('postcss-safe-parser');
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22 | const ManifestPlugin = require('webpack-manifest-plugin');
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23 | const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
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24 | const WorkboxWebpackPlugin = require('workbox-webpack-plugin');
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25 | const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
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26 | const getCSSModuleLocalIdent = require('react-dev-utils/getCSSModuleLocalIdent');
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27 | const paths = require('./paths');
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28 | const getClientEnvironment = require('./env');
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29 | const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
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30 | const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin-alt');
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31 | const typescriptFormatter = require('react-dev-utils/typescriptFormatter');
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32 | // @remove-on-eject-begin
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33 | const getCacheIdentifier = require('react-dev-utils/getCacheIdentifier');
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34 | // @remove-on-eject-end
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35 |
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36 | // Webpack uses `publicPath` to determine where the app is being served from.
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37 | // It requires a trailing slash, or the file assets will get an incorrect path.
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38 | const publicPath = paths.servedPath;
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39 | // Some apps do not use client-side routing with pushState.
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40 | // For these, "homepage" can be set to "." to enable relative asset paths.
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41 | const shouldUseRelativeAssetPaths = publicPath === './';
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42 | // Source maps are resource heavy and can cause out of memory issue for large source files.
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43 | const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
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44 | // Some apps do not need the benefits of saving a web request, so not inlining the chunk
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45 | // makes for a smoother build process.
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46 | const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false';
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47 | // `publicUrl` is just like `publicPath`, but we will provide it to our app
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48 | // as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
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49 | // Omit trailing slash as %PUBLIC_URL%/xyz looks better than %PUBLIC_URL%xyz.
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50 | const publicUrl = publicPath.slice(0, -1);
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51 | // Get environment variables to inject into our app.
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52 | const env = getClientEnvironment(publicUrl);
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53 |
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54 | // Assert this just to be safe.
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55 | // Development builds of React are slow and not intended for production.
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56 | if (env.stringified['process.env'].NODE_ENV !== '"production"') {
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57 | throw new Error('Production builds must have NODE_ENV=production.');
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58 | }
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59 |
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60 | // Check if TypeScript is setup
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61 | const useTypeScript = fs.existsSync(paths.appTsConfig);
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62 |
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63 | // style files regexes
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64 | const cssRegex = /\.css$/;
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65 | const cssModuleRegex = /\.module\.css$/;
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66 | const sassRegex = /\.(scss|sass)$/;
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67 | const sassModuleRegex = /\.module\.(scss|sass)$/;
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68 |
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69 | // common function to get style loaders
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70 | const getStyleLoaders = (cssOptions, preProcessor) => {
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71 | const loaders = [
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72 | {
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73 | loader: MiniCssExtractPlugin.loader,
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74 | options: Object.assign(
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75 | {},
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76 | shouldUseRelativeAssetPaths ? { publicPath: '../../' } : undefined
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77 | ),
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78 | },
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79 | {
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80 | loader: require.resolve('css-loader'),
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81 | options: cssOptions,
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82 | },
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83 | {
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84 | // Options for PostCSS as we reference these options twice
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85 | // Adds vendor prefixing based on your specified browser support in
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86 | // package.json
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87 | loader: require.resolve('postcss-loader'),
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88 | options: {
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89 | // Necessary for external CSS imports to work
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90 | // https://github.com/facebook/create-react-app/issues/2677
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91 | ident: 'postcss',
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92 | plugins: () => [
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93 | require('postcss-flexbugs-fixes'),
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94 | require('postcss-preset-env')({
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95 | autoprefixer: {
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96 | flexbox: 'no-2009',
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97 | },
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98 | stage: 3,
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99 | }),
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100 | ],
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101 | sourceMap: shouldUseSourceMap,
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102 | },
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103 | },
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104 | ];
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105 | if (preProcessor) {
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106 | loaders.push({
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107 | loader: require.resolve(preProcessor),
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108 | options: {
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109 | sourceMap: shouldUseSourceMap,
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110 | },
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111 | });
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112 | }
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113 | return loaders;
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114 | };
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115 |
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116 | // This is the production configuration.
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117 | // It compiles slowly and is focused on producing a fast and minimal bundle.
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118 | // The development configuration is different and lives in a separate file.
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119 | module.exports = {
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120 | mode: 'production',
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121 | // Don't attempt to continue if there are any errors.
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122 | bail: true,
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123 | // We generate sourcemaps in production. This is slow but gives good results.
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124 | // You can exclude the *.map files from the build during deployment.
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125 | devtool: shouldUseSourceMap ? 'source-map' : false,
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126 | // In production, we only want to load the app code.
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127 | entry: [paths.appIndexJs],
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128 | output: {
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129 | // The build folder.
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130 | path: paths.appBuild,
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131 | // Generated JS file names (with nested folders).
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132 | // There will be one main bundle, and one file per asynchronous chunk.
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133 | // We don't currently advertise code splitting but Webpack supports it.
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134 | filename: 'static/js/[name].[chunkhash:8].js',
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135 | chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
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136 | // We inferred the "public path" (such as / or /my-project) from homepage.
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137 | publicPath: publicPath,
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138 | // Point sourcemap entries to original disk location (format as URL on Windows)
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139 | devtoolModuleFilenameTemplate: info =>
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140 | path
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141 | .relative(paths.appSrc, info.absoluteResourcePath)
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142 | .replace(/\\/g, '/'),
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143 | },
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144 | optimization: {
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145 | minimizer: [
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146 | new TerserPlugin({
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147 | terserOptions: {
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148 | parse: {
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149 | // we want terser to parse ecma 8 code. However, we don't want it
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150 | // to apply any minfication steps that turns valid ecma 5 code
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151 | // into invalid ecma 5 code. This is why the 'compress' and 'output'
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152 | // sections only apply transformations that are ecma 5 safe
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153 | // https://github.com/facebook/create-react-app/pull/4234
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154 | ecma: 8,
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155 | },
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156 | compress: {
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157 | ecma: 5,
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158 | warnings: false,
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159 | // Disabled because of an issue with Uglify breaking seemingly valid code:
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160 | // https://github.com/facebook/create-react-app/issues/2376
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161 | // Pending further investigation:
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162 | // https://github.com/mishoo/UglifyJS2/issues/2011
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163 | comparisons: false,
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164 | // Disabled because of an issue with Terser breaking valid code:
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165 | // https://github.com/facebook/create-react-app/issues/5250
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166 | // Pending futher investigation:
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167 | // https://github.com/terser-js/terser/issues/120
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168 | inline: 2,
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169 | },
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170 | mangle: {
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171 | safari10: true,
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172 | },
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173 | output: {
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174 | ecma: 5,
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175 | comments: false,
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176 | // Turned on because emoji and regex is not minified properly using default
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177 | // https://github.com/facebook/create-react-app/issues/2488
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178 | ascii_only: true,
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179 | },
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180 | },
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181 | // Use multi-process parallel running to improve the build speed
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182 | // Default number of concurrent runs: os.cpus().length - 1
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183 | parallel: true,
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184 | // Enable file caching
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185 | cache: true,
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186 | sourceMap: shouldUseSourceMap,
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187 | }),
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188 | new OptimizeCSSAssetsPlugin({
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189 | cssProcessorOptions: {
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190 | parser: safePostCssParser,
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191 | map: shouldUseSourceMap
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192 | ? {
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193 | // `inline: false` forces the sourcemap to be output into a
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194 | // separate file
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195 | inline: false,
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196 | // `annotation: true` appends the sourceMappingURL to the end of
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197 | // the css file, helping the browser find the sourcemap
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198 | annotation: true,
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199 | }
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200 | : false,
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201 | },
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202 | }),
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203 | ],
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204 | // Automatically split vendor and commons
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205 | // https://twitter.com/wSokra/status/969633336732905474
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206 | // https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
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207 | splitChunks: {
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208 | chunks: 'all',
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209 | name: false,
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210 | },
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211 | // Keep the runtime chunk seperated to enable long term caching
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212 | // https://twitter.com/wSokra/status/969679223278505985
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213 | runtimeChunk: true,
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214 | },
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215 | resolve: {
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216 | // This allows you to set a fallback for where Webpack should look for modules.
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217 | // We placed these paths second because we want `node_modules` to "win"
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218 | // if there are any conflicts. This matches Node resolution mechanism.
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219 | // https://github.com/facebook/create-react-app/issues/253
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220 | modules: ['node_modules'].concat(
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221 | // It is guaranteed to exist because we tweak it in `env.js`
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222 | process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
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223 | ),
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224 | // These are the reasonable defaults supported by the Node ecosystem.
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225 | // We also include JSX as a common component filename extension to support
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226 | // some tools, although we do not recommend using it, see:
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227 | // https://github.com/facebook/create-react-app/issues/290
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228 | // `web` extension prefixes have been added for better support
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229 | // for React Native Web.
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230 | extensions: paths.moduleFileExtensions
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231 | .map(ext => `.${ext}`)
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232 | .filter(ext => useTypeScript || !ext.includes('ts')),
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233 | alias: {
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234 | // Support React Native Web
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235 | // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
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236 | 'react-native': 'react-native-web',
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237 | },
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238 | plugins: [
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239 | // Adds support for installing with Plug'n'Play, leading to faster installs and adding
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240 | // guards against forgotten dependencies and such.
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241 | PnpWebpackPlugin,
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242 | // Prevents users from importing files from outside of src/ (or node_modules/).
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243 | // This often causes confusion because we only process files within src/ with babel.
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244 | // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
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245 | // please link the files into your node_modules/ and let module-resolution kick in.
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246 | // Make sure your source files are compiled, as they will not be processed in any way.
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247 | new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
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248 | ],
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249 | },
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250 | resolveLoader: {
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251 | plugins: [
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252 | // Also related to Plug'n'Play, but this time it tells Webpack to load its loaders
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253 | // from the current package.
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254 | PnpWebpackPlugin.moduleLoader(module),
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255 | ],
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256 | },
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257 | module: {
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258 | strictExportPresence: true,
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259 | rules: [
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260 | // Disable require.ensure as it's not a standard language feature.
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261 | { parser: { requireEnsure: false } },
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262 |
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263 | // First, run the linter.
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264 | // It's important to do this before Babel processes the JS.
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265 | {
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266 | test: /\.(js|mjs|jsx)$/,
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267 | enforce: 'pre',
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268 | use: [
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269 | {
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270 | options: {
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271 | formatter: require.resolve('react-dev-utils/eslintFormatter'),
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272 | eslintPath: require.resolve('eslint'),
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273 | // @remove-on-eject-begin
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274 | // TODO: consider separate config for production,
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275 | // e.g. to enable no-console and no-debugger only in production.
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276 | baseConfig: {
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277 | extends: [require.resolve('eslint-config-react-app')],
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278 | settings: { react: { version: '999.999.999' } },
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279 | },
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280 | ignore: false,
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281 | useEslintrc: false,
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282 | // @remove-on-eject-end
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283 | },
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284 | loader: require.resolve('eslint-loader'),
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285 | },
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286 | ],
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287 | include: paths.appSrc,
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288 | },
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289 | {
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290 | // "oneOf" will traverse all following loaders until one will
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291 | // match the requirements. When no loader matches it will fall
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292 | // back to the "file" loader at the end of the loader list.
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293 | oneOf: [
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294 | // "url" loader works just like "file" loader but it also embeds
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295 | // assets smaller than specified size as data URLs to avoid requests.
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296 | {
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297 | test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
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298 | loader: require.resolve('url-loader'),
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299 | options: {
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300 | limit: 10000,
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301 | name: 'static/media/[name].[hash:8].[ext]',
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302 | },
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303 | },
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304 | // Process application JS with Babel.
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305 | // The preset includes JSX, Flow, TypeScript and some ESnext features.
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306 | {
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307 | test: /\.(js|mjs|jsx|ts|tsx)$/,
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308 | include: paths.appSrc,
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309 |
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310 | loader: require.resolve('babel-loader'),
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311 | options: {
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312 | customize: require.resolve(
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313 | 'babel-preset-react-app/webpack-overrides'
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314 | ),
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315 | // @remove-on-eject-begin
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316 | babelrc: false,
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317 | configFile: false,
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318 | presets: [require.resolve('babel-preset-react-app')],
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319 | // Make sure we have a unique cache identifier, erring on the
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320 | // side of caution.
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321 | // We remove this when the user ejects because the default
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322 | // is sane and uses Babel options. Instead of options, we use
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323 | // the react-scripts and babel-preset-react-app versions.
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324 | cacheIdentifier: getCacheIdentifier('production', [
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325 | 'babel-plugin-named-asset-import',
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326 | 'babel-preset-react-app',
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327 | 'react-dev-utils',
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328 | 'react-scripts',
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329 | ]),
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330 | // @remove-on-eject-end
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331 | plugins: [
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332 | [
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333 | require.resolve('babel-plugin-named-asset-import'),
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334 | {
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335 | loaderMap: {
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336 | svg: {
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337 | ReactComponent: '@svgr/webpack?-prettier,-svgo![path]',
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338 | },
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339 | },
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340 | },
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341 | ],
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342 | ],
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343 | cacheDirectory: true,
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344 | // Save disk space when time isn't as important
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345 | cacheCompression: true,
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346 | compact: true,
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347 | },
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348 | },
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349 | // Process any JS outside of the app with Babel.
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350 | // Unlike the application JS, we only compile the standard ES features.
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351 | {
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352 | test: /\.(js|mjs)$/,
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353 | exclude: /@babel(?:\/|\\{1,2})runtime/,
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354 | loader: require.resolve('babel-loader'),
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355 | options: {
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356 | babelrc: false,
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357 | configFile: false,
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358 | compact: false,
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359 | presets: [
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360 | [
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361 | require.resolve('babel-preset-react-app/dependencies'),
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362 | { helpers: true },
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363 | ],
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364 | ],
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365 | cacheDirectory: true,
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366 | // Save disk space when time isn't as important
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367 | cacheCompression: true,
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368 | // @remove-on-eject-begin
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369 | cacheIdentifier: getCacheIdentifier('production', [
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370 | 'babel-plugin-named-asset-import',
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371 | 'babel-preset-react-app',
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372 | 'react-dev-utils',
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373 | 'react-scripts',
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374 | ]),
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375 | // @remove-on-eject-end
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376 | // If an error happens in a package, it's possible to be
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377 | // because it was compiled. Thus, we don't want the browser
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378 | // debugger to show the original code. Instead, the code
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379 | // being evaluated would be much more helpful.
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380 | sourceMaps: false,
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381 | },
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382 | },
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383 | // "postcss" loader applies autoprefixer to our CSS.
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384 | // "css" loader resolves paths in CSS and adds assets as dependencies.
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385 | // `MiniCSSExtractPlugin` extracts styles into CSS
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386 | // files. If you use code splitting, async bundles will have their own separate CSS chunk file.
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387 | // By default we support CSS Modules with the extension .module.css
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388 | {
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389 | test: cssRegex,
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390 | exclude: cssModuleRegex,
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391 | loader: getStyleLoaders({
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392 | importLoaders: 1,
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393 | sourceMap: shouldUseSourceMap,
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394 | }),
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395 | // Don't consider CSS imports dead code even if the
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396 | // containing package claims to have no side effects.
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397 | // Remove this when webpack adds a warning or an error for this.
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398 | // See https://github.com/webpack/webpack/issues/6571
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399 | sideEffects: true,
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400 | },
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401 | // Adds support for CSS Modules (https://github.com/css-modules/css-modules)
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402 | // using the extension .module.css
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403 | {
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404 | test: cssModuleRegex,
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405 | loader: getStyleLoaders({
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406 | importLoaders: 1,
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407 | sourceMap: shouldUseSourceMap,
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408 | modules: true,
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409 | getLocalIdent: getCSSModuleLocalIdent,
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410 | }),
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411 | },
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412 | // Opt-in support for SASS. The logic here is somewhat similar
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413 | // as in the CSS routine, except that "sass-loader" runs first
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414 | // to compile SASS files into CSS.
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415 | // By default we support SASS Modules with the
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416 | // extensions .module.scss or .module.sass
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417 | {
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418 | test: sassRegex,
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419 | exclude: sassModuleRegex,
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420 | loader: getStyleLoaders(
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421 | {
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422 | importLoaders: 2,
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423 | sourceMap: shouldUseSourceMap,
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424 | },
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425 | 'sass-loader'
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426 | ),
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427 | // Don't consider CSS imports dead code even if the
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428 | // containing package claims to have no side effects.
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429 | // Remove this when webpack adds a warning or an error for this.
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430 | // See https://github.com/webpack/webpack/issues/6571
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431 | sideEffects: true,
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432 | },
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433 | // Adds support for CSS Modules, but using SASS
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434 | // using the extension .module.scss or .module.sass
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435 | {
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436 | test: sassModuleRegex,
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437 | loader: getStyleLoaders(
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438 | {
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439 | importLoaders: 2,
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440 | sourceMap: shouldUseSourceMap,
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441 | modules: true,
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442 | getLocalIdent: getCSSModuleLocalIdent,
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443 | },
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444 | 'sass-loader'
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445 | ),
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446 | },
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447 | // "file" loader makes sure assets end up in the `build` folder.
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448 | // When you `import` an asset, you get its filename.
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449 | // This loader doesn't use a "test" so it will catch all modules
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450 | // that fall through the other loaders.
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451 | {
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452 | loader: require.resolve('file-loader'),
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453 | // Exclude `js` files to keep "css" loader working as it injects
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454 | // it's runtime that would otherwise be processed through "file" loader.
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455 | // Also exclude `html` and `json` extensions so they get processed
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456 | // by webpacks internal loaders.
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457 | exclude: [/\.(js|mjs|jsx|ts|tsx)$/, /\.html$/, /\.json$/],
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458 | options: {
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459 | name: 'static/media/[name].[hash:8].[ext]',
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460 | },
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461 | },
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462 | // ** STOP ** Are you adding a new loader?
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463 | // Make sure to add the new loader(s) before the "file" loader.
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464 | ],
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465 | },
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466 | ],
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467 | },
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468 | plugins: [
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469 | // Generates an `index.html` file with the <script> injected.
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470 | new HtmlWebpackPlugin({
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471 | inject: true,
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472 | template: paths.appHtml,
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473 | minify: {
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474 | removeComments: true,
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475 | collapseWhitespace: true,
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476 | removeRedundantAttributes: true,
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477 | useShortDoctype: true,
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478 | removeEmptyAttributes: true,
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479 | removeStyleLinkTypeAttributes: true,
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480 | keepClosingSlash: true,
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481 | minifyJS: true,
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482 | minifyCSS: true,
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483 | minifyURLs: true,
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484 | },
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485 | }),
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486 | // Inlines the webpack runtime script. This script is too small to warrant
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487 | // a network request.
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488 | shouldInlineRuntimeChunk &&
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489 | new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/runtime~.+[.]js/]),
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490 | // Makes some environment variables available in index.html.
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491 | // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
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492 | // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
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493 | // In production, it will be an empty string unless you specify "homepage"
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494 | // in `package.json`, in which case it will be the pathname of that URL.
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495 | new InterpolateHtmlPlugin(HtmlWebpackPlugin, env.raw),
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496 | // This gives some necessary context to module not found errors, such as
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497 | // the requesting resource.
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498 | new ModuleNotFoundPlugin(paths.appPath),
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499 | // Makes some environment variables available to the JS code, for example:
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500 | // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
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501 | // It is absolutely essential that NODE_ENV was set to production here.
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502 | // Otherwise React will be compiled in the very slow development mode.
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503 | new webpack.DefinePlugin(env.stringified),
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504 | new MiniCssExtractPlugin({
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505 | // Options similar to the same options in webpackOptions.output
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506 | // both options are optional
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507 | filename: 'static/css/[name].[contenthash:8].css',
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508 | chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
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509 | }),
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510 | // Generate a manifest file which contains a mapping of all asset filenames
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511 | // to their corresponding output file so that tools can pick it up without
|
512 | // having to parse `index.html`.
|
513 | new ManifestPlugin({
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514 | fileName: 'asset-manifest.json',
|
515 | publicPath: publicPath,
|
516 | }),
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517 | // Moment.js is an extremely popular library that bundles large locale files
|
518 | // by default due to how Webpack interprets its code. This is a practical
|
519 | // solution that requires the user to opt into importing specific locales.
|
520 | // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
|
521 | // You can remove this if you don't use Moment.js:
|
522 | new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
|
523 | // Generate a service worker script that will precache, and keep up to date,
|
524 | // the HTML & assets that are part of the Webpack build.
|
525 | new WorkboxWebpackPlugin.GenerateSW({
|
526 | clientsClaim: true,
|
527 | exclude: [/\.map$/, /asset-manifest\.json$/],
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528 | importWorkboxFrom: 'cdn',
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529 | navigateFallback: publicUrl + '/index.html',
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530 | navigateFallbackBlacklist: [
|
531 | // Exclude URLs starting with /_, as they're likely an API call
|
532 | new RegExp('^/_'),
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533 | // Exclude URLs containing a dot, as they're likely a resource in
|
534 | // public/ and not a SPA route
|
535 | new RegExp('/[^/]+\\.[^/]+$'),
|
536 | ],
|
537 | }),
|
538 | // TypeScript type checking
|
539 | fs.existsSync(paths.appTsConfig) &&
|
540 | new ForkTsCheckerWebpackPlugin({
|
541 | typescript: resolve.sync('typescript', {
|
542 | basedir: paths.appNodeModules,
|
543 | }),
|
544 | async: false,
|
545 | checkSyntacticErrors: true,
|
546 | tsconfig: paths.appTsConfig,
|
547 | compilerOptions: {
|
548 | module: 'esnext',
|
549 | moduleResolution: 'node',
|
550 | resolveJsonModule: true,
|
551 | isolatedModules: true,
|
552 | noEmit: true,
|
553 | jsx: 'preserve',
|
554 | },
|
555 | reportFiles: [
|
556 | '**',
|
557 | '!**/*.json',
|
558 | '!**/__tests__/**',
|
559 | '!**/?(*.)(spec|test).*',
|
560 | '!src/setupProxy.js',
|
561 | '!src/setupTests.*',
|
562 | ],
|
563 | watch: paths.appSrc,
|
564 | silent: true,
|
565 | formatter: typescriptFormatter,
|
566 | }),
|
567 | ].filter(Boolean),
|
568 | // Some libraries import Node modules but don't use them in the browser.
|
569 | // Tell Webpack to provide empty mocks for them so importing them works.
|
570 | node: {
|
571 | dgram: 'empty',
|
572 | fs: 'empty',
|
573 | net: 'empty',
|
574 | tls: 'empty',
|
575 | child_process: 'empty',
|
576 | },
|
577 | // Turn off performance processing because we utilize
|
578 | // our own hints via the FileSizeReporter
|
579 | performance: false,
|
580 | };
|