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September 18, 2018 09:07
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const autoprefixer = require('autoprefixer'); | |
const path = require('path'); | |
const webpack = require('webpack'); | |
const HtmlWebpackPlugin = require('html-webpack-plugin'); | |
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin'); | |
const InterpolateHtmlPlugin = require('interpolate-html-plugin'); | |
const eslintFormatter = require('react-dev-utils/eslintFormatter'); | |
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin'); | |
const getClientEnvironment = require('./env'); | |
const paths = require('./paths'); | |
// Webpack uses `publicPath` to determine where the app is being served from. | |
// In development, we always serve from the root. This makes config easier. | |
const publicPath = '/'; | |
// `publicUrl` is just like `publicPath`, but we will provide it to our app | |
// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript. | |
// Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz. | |
const publicUrl = ''; | |
// Get environment variables to inject into our app. | |
const env = getClientEnvironment(publicUrl); | |
// Options for PostCSS as we reference these options twice | |
// Adds vendor prefixing based on your specified browser support in | |
// package.json | |
const postCSSLoaderOptions = { | |
// Necessary for external CSS imports to work | |
// https://github.com/facebook/create-react-app/issues/2677 | |
ident: 'postcss', | |
plugins: () => [ | |
require('postcss-flexbugs-fixes'), | |
autoprefixer({ | |
flexbox: 'no-2009', | |
}), | |
], | |
}; | |
// This is the development configuration. | |
// It is focused on developer experience and fast rebuilds. | |
// The production configuration is different and lives in a separate file. | |
module.exports = { | |
mode: 'development', | |
// You may want 'eval' instead if you prefer to see the compiled output in DevTools. | |
// See the discussion in https://github.com/facebook/create-react-app/issues/343. | |
// TODO: vire - using `eval` instead of `cheap-module-source-map` make build/rebuild faster | |
devtool: 'eval', | |
// These are the "entry points" to our application. | |
// This means they will be the "root" imports that are included in JS bundle. | |
// The first two entry points enable "hot" CSS and auto-refreshes for JS. | |
entry: [ | |
// We ship a few polyfills by default: | |
require.resolve('./polyfills'), | |
// Include an alternative client for WebpackDevServer. A client's job is to | |
// connect to WebpackDevServer by a socket and get notified about changes. | |
// When you save a file, the client will either apply hot updates (in case | |
// of CSS changes), or refresh the page (in case of JS changes). When you | |
// make a syntax error, this client will display a syntax error overlay. | |
// Note: instead of the default WebpackDevServer client, we use a custom one | |
// to bring better experience for Create React App users. You can replace | |
// the line below with these two lines if you prefer the stock client: | |
// require.resolve('webpack-dev-server/client') + '?/', | |
// require.resolve('webpack/hot/dev-server'), | |
require.resolve('react-dev-utils/webpackHotDevClient'), | |
// Finally, this is your app's code: | |
paths.appIndexJs, | |
// We include the app code last so that if there is a runtime error during | |
// initialization, it doesn't blow up the WebpackDevServer client, and | |
// changing JS code would still trigger a refresh. | |
], | |
output: { | |
// Add /* filename */ comments to generated require()s in the output. | |
pathinfo: true, | |
// This does not produce a real file. It's just the virtual path that is | |
// served by WebpackDevServer in development. This is the JS bundle | |
// containing code from all our entry points, and the Webpack runtime. | |
filename: 'static/js/[name].bundle.js', | |
// There are also additional JS chunk files if you use code splitting. | |
chunkFilename: 'static/js/[name].chunk.js', | |
// This is the URL that app is served from. We use "/" in development. | |
publicPath, | |
// Point sourcemap entries to original disk location (format as URL on Windows) | |
devtoolModuleFilenameTemplate: info => | |
path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'), | |
}, | |
resolve: { | |
// This allows you to set a fallback for where Webpack should look for modules. | |
// We placed these paths second because we want `node_modules` to "win" | |
// if there are any conflicts. This matches Node resolution mechanism. | |
// https://github.com/facebook/create-react-app/issues/253 | |
modules: ['node_modules'].concat( | |
// It is guaranteed to exist because we tweak it in `env.js` | |
process.env.NODE_PATH.split(path.delimiter).filter(Boolean) | |
), | |
// These are the reasonable defaults supported by the Node ecosystem. | |
// We also include JSX as a common component filename extension to support | |
// some tools, although we do not recommend using it, see: | |
// https://github.com/facebook/create-react-app/issues/290 | |
// `web` extension prefixes have been added for better support | |
// for React Native Web. | |
extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'], | |
plugins: [ | |
// Prevents users from importing files from outside of src/ (or node_modules/). | |
// This often causes confusion because we only process files within src/ with babel. | |
// To fix this, we prevent you from importing files out of src/ -- if you'd like to, | |
// please link the files into your node_modules/ and let module-resolution kick in. | |
// Make sure your source files are compiled, as they will not be processed in any way. | |
new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]), | |
], | |
}, | |
module: { | |
strictExportPresence: true, | |
rules: [ | |
// Disable require.ensure as it's not a standard language feature. | |
{ parser: { requireEnsure: false } }, | |
// First, run the linter. | |
// It's important to do this before Babel processes the JS. | |
{ | |
test: /\.(js|jsx|mjs)$/, | |
enforce: 'pre', | |
use: [ | |
{ | |
options: { | |
formatter: eslintFormatter, | |
eslintPath: require.resolve('eslint'), | |
}, | |
loader: require.resolve('eslint-loader'), | |
}, | |
], | |
include: paths.srcPaths, | |
exclude: [/[/\\\\]node_modules[/\\\\]/], | |
}, | |
{ | |
// "oneOf" will traverse all following loaders until one will | |
// match the requirements. When no loader matches it will fall | |
// back to the "file" loader at the end of the loader list. | |
oneOf: [ | |
// "url" loader works like "file" loader except that it embeds assets | |
// smaller than specified limit in bytes as data URLs to avoid requests. | |
// A missing `test` is equivalent to a match. | |
{ | |
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/], | |
loader: require.resolve('url-loader'), | |
options: { | |
limit: 10000, | |
name: 'static/media/[name].[hash:8].[ext]', | |
}, | |
}, | |
// Process application JS with Babel. | |
// The preset includes JSX, Flow, and some ESnext features. | |
{ | |
test: /\.(js|jsx|mjs)$/, | |
include: paths.srcPaths, | |
exclude: [/[/\\\\]node_modules[/\\\\]/], | |
use: [ | |
// This loader parallelizes code compilation, it is optional but | |
// improves compile time on larger projects | |
require.resolve('thread-loader'), | |
{ | |
loader: require.resolve('babel-loader'), | |
options: { | |
presets: [require.resolve('babel-preset-react-app')], | |
plugins: [ | |
[ | |
require.resolve('babel-plugin-named-asset-import'), | |
{ | |
loaderMap: { | |
svg: { | |
ReactComponent: 'svgr/webpack![path]', | |
}, | |
}, | |
}, | |
], | |
], | |
// This is a feature of `babel-loader` for webpack (not Babel itself). | |
// It enables caching results in ./node_modules/.cache/babel-loader/ | |
// directory for faster rebuilds. | |
cacheDirectory: true, | |
highlightCode: true, | |
}, | |
}, | |
], | |
}, | |
// Process any JS outside of the app with Babel. | |
// Unlike the application JS, we only compile the standard ES features. | |
{ | |
test: /\.js$/, | |
use: [ | |
// This loader parallelizes code compilation, it is optional but | |
// improves compile time on larger projects | |
require.resolve('thread-loader'), | |
{ | |
loader: require.resolve('babel-loader'), | |
options: { | |
babelrc: false, | |
compact: false, | |
presets: [ | |
require.resolve('babel-preset-react-app/dependencies'), | |
], | |
cacheDirectory: true, | |
highlightCode: true, | |
}, | |
}, | |
], | |
}, | |
// "postcss" loader applies autoprefixer to our CSS. | |
// "css" loader resolves paths in CSS and adds assets as dependencies. | |
// "style" loader turns CSS into JS modules that inject <style> tags. | |
// In production, we use a plugin to extract that CSS to a file, but | |
// in development "style" loader enables hot editing of CSS. | |
// By default we support CSS Modules with the extension .module.css | |
{ | |
test: /\.css$/, | |
exclude: /\.module\.css$/, | |
use: [ | |
require.resolve('style-loader'), | |
{ | |
loader: require.resolve('css-loader'), | |
options: { | |
importLoaders: 1, | |
}, | |
}, | |
{ | |
loader: require.resolve('postcss-loader'), | |
options: postCSSLoaderOptions, | |
}, | |
], | |
}, | |
// Adds support for CSS Modules (https://github.com/css-modules/css-modules) | |
// using the extension .module.css | |
{ | |
test: /\.module\.css$/, | |
use: [ | |
require.resolve('style-loader'), | |
{ | |
loader: require.resolve('css-loader'), | |
options: { | |
importLoaders: 1, | |
modules: true, | |
localIdentName: '[path]__[name]___[local]', | |
}, | |
}, | |
{ | |
loader: require.resolve('postcss-loader'), | |
options: postCSSLoaderOptions, | |
}, | |
], | |
}, | |
// The GraphQL loader preprocesses GraphQL queries in .graphql files. | |
{ | |
test: /\.(graphql)$/, | |
loader: 'graphql-tag/loader', | |
}, | |
// "file" loader makes sure those assets get served by WebpackDevServer. | |
// When you `import` an asset, you get its (virtual) filename. | |
// In production, they would get copied to the `build` folder. | |
// This loader doesn't use a "test" so it will catch all modules | |
// that fall through the other loaders. | |
{ | |
// Exclude `js` files to keep "css" loader working as it injects | |
// its runtime that would otherwise be processed through "file" loader. | |
// Also exclude `html` and `json` extensions so they get processed | |
// by webpacks internal loaders. | |
exclude: [/\.(js|jsx|mjs)$/, /\.html$/, /\.json$/], | |
loader: require.resolve('file-loader'), | |
options: { | |
name: 'static/media/[name].[hash:8].[ext]', | |
}, | |
}, | |
], | |
}, | |
// ** STOP ** Are you adding a new loader? | |
// Make sure to add the new loader(s) before the "file" loader. | |
], | |
}, | |
optimization: { | |
splitChunks: { | |
cacheGroups: { | |
commons: { | |
test: /[\\/]node_modules[\\/]/, | |
name: 'vendor', | |
chunks: 'initial', | |
}, | |
}, | |
}, | |
}, | |
plugins: [ | |
new webpack.LoaderOptionsPlugin({ | |
options: { | |
context: process.cwd(), // or the same value as `context` | |
}, | |
}), | |
// Generates an `index.html` file with the <script> injected. | |
new HtmlWebpackPlugin({ | |
inject: true, | |
template: paths.appHtml, | |
chunksSortMode: 'none', | |
}), | |
// Makes some environment variables available in index.html. | |
// The public URL is available as %PUBLIC_URL% in index.html, e.g.: | |
// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico"> | |
// In development, this will be an empty string. | |
new InterpolateHtmlPlugin(env.raw), | |
// Add module names to factory functions so they appear in browser profiler. | |
new webpack.NamedModulesPlugin(), | |
// Makes some environment variables available to the JS code, for example: | |
// if (process.env.NODE_ENV === 'development') { ... }. See `./env.js`. | |
new webpack.DefinePlugin(env.stringified), | |
// This is necessary to emit hot updates (currently CSS only): | |
new webpack.HotModuleReplacementPlugin(), | |
// Watcher doesn't work well if you mistype casing in a path so we use | |
// a plugin that prints an error when you attempt to do this. | |
// See https://github.com/facebook/create-react-app/issues/240 | |
new CaseSensitivePathsPlugin(), | |
// Moment.js is an extremely popular library that bundles large locale files | |
// by default due to how Webpack interprets its code. This is a practical | |
// solution that requires the user to opt into importing specific locales. | |
// https://github.com/jmblog/how-to-optimize-momentjs-with-webpack | |
// You can remove this if you don't use Moment.js: | |
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/), | |
], | |
// Some libraries import Node modules but don't use them in the browser. | |
// Tell Webpack to provide empty mocks for them so importing them works. | |
node: { | |
dgram: 'empty', | |
fs: 'empty', | |
net: 'empty', | |
tls: 'empty', | |
child_process: 'empty', | |
}, | |
// Turn off performance hints during development because we don't do any | |
// splitting or minification in interest of speed. These warnings become | |
// cumbersome. | |
performance: { | |
hints: false, | |
}, | |
}; |
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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('interpolate-html-plugin'); | |
const eslintFormatter = require('react-dev-utils/eslintFormatter'); | |
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin'); | |
const SpeedMeasurePlugin = require('speed-measure-webpack-plugin'); | |
const paths = require('./paths'); | |
const getClientEnvironment = require('./env'); | |
// Webpack uses `publicPath` to determine where the app is being served from. | |
// It requires a trailing slash, or the file assets will get an incorrect path. | |
const publicPath = paths.servedPath; | |
// Some apps do not use client-side routing with pushState. | |
// For these, "homepage" can be set to "." to enable relative asset paths. | |
const shouldUseRelativeAssetPaths = publicPath === './'; | |
// Source maps are resource heavy and can cause out of memory issue for large source files. | |
const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false'; | |
// `publicUrl` is just like `publicPath`, but we will provide it to our app | |
// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript. | |
// Omit trailing slash as %PUBLIC_URL%/xyz looks better than %PUBLIC_URL%xyz. | |
const publicUrl = publicPath.slice(0, -1); | |
// Get environment variables to inject into our app. | |
const env = getClientEnvironment(publicUrl); | |
// Assert this just to be safe. | |
// Development builds of React are slow and not intended for production. | |
if (env.stringified['process.env'].NODE_ENV !== '"production"') { | |
throw new Error('Production builds must have NODE_ENV=production.'); | |
} | |
// Note: defined here because it will be used more than once. | |
const cssFilename = 'static/css/[name].[md5:contenthash:hex:20].css'; | |
// ExtractTextPlugin expects the build output to be flat. | |
// (See https://github.com/webpack-contrib/extract-text-webpack-plugin/issues/27) | |
// However, our output is structured with css, js and media folders. | |
// To have this structure working with relative paths, we have to use custom options. | |
const extractTextPluginOptions = shouldUseRelativeAssetPaths | |
? // Making sure that the publicPath goes back to to build folder. | |
{ publicPath: Array(cssFilename.split('/').length).join('../') } | |
: {}; | |
// Options for PostCSS as we reference these options twice | |
// Adds vendor prefixing based on your specified browser support in | |
// package.json | |
const postCSSLoaderOptions = { | |
// Necessary for external CSS imports to work | |
// https://github.com/facebook/create-react-app/issues/2677 | |
ident: 'postcss', | |
plugins: () => [ | |
require('postcss-flexbugs-fixes'), | |
autoprefixer({ | |
flexbox: 'no-2009', | |
}), | |
], | |
}; | |
// This is the production configuration. | |
// It compiles slowly and is focused on producing a fast and minimal bundle. | |
// The development configuration is different and lives in a separate file. | |
module.exports = { | |
mode: 'production', | |
// Don't attempt to continue if there are any errors. | |
bail: true, | |
// We generate sourcemaps in production. This is slow but gives good results. | |
// You can exclude the *.map files from the build during deployment. | |
devtool: shouldUseSourceMap ? 'source-map' : false, | |
// In production, we only want to load the polyfills and the app code. | |
entry: [require.resolve('./polyfills'), paths.appIndexJs], | |
output: { | |
// The build folder. | |
path: paths.appBuild, | |
// Generated JS file names (with nested folders). | |
// There will be one main bundle, and one file per asynchronous chunk. | |
// We don't currently advertise code splitting but Webpack supports it. | |
filename: 'static/js/[name].[chunkhash:8].js', | |
chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js', | |
// We inferred the "public path" (such as / or /my-project) from homepage. | |
publicPath, | |
// Point sourcemap entries to original disk location (format as URL on Windows) | |
devtoolModuleFilenameTemplate: info => | |
path | |
.relative(paths.appSrc, info.absoluteResourcePath) | |
.replace(/\\/g, '/'), | |
}, | |
resolve: { | |
// This allows you to set a fallback for where Webpack should look for modules. | |
// We placed these paths second because we want `node_modules` to "win" | |
// if there are any conflicts. This matches Node resolution mechanism. | |
// https://github.com/facebook/create-react-app/issues/253 | |
modules: ['node_modules'].concat( | |
// It is guaranteed to exist because we tweak it in `env.js` | |
process.env.NODE_PATH.split(path.delimiter).filter(Boolean) | |
), | |
// These are the reasonable defaults supported by the Node ecosystem. | |
// We also include JSX as a common component filename extension to support | |
// some tools, although we do not recommend using it, see: | |
// https://github.com/facebook/create-react-app/issues/290 | |
// `web` extension prefixes have been added for better support | |
// for React Native Web. | |
extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'], | |
plugins: [ | |
// Prevents users from importing files from outside of src/ (or node_modules/). | |
// This often causes confusion because we only process files within src/ with babel. | |
// To fix this, we prevent you from importing files out of src/ -- if you'd like to, | |
// please link the files into your node_modules/ and let module-resolution kick in. | |
// Make sure your source files are compiled, as they will not be processed in any way. | |
new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]), | |
], | |
}, | |
module: { | |
strictExportPresence: true, | |
rules: [ | |
// Disable require.ensure as it's not a standard language feature. | |
{ parser: { requireEnsure: false } }, | |
{ | |
test: /\.(js|jsx|mjs)$/, | |
enforce: 'pre', | |
use: [ | |
{ | |
options: { | |
formatter: eslintFormatter, | |
eslintPath: require.resolve('eslint'), | |
// TODO: consider separate config for production, | |
// e.g. to enable no-console and no-debugger only in production. | |
}, | |
loader: require.resolve('eslint-loader'), | |
}, | |
], | |
include: paths.srcPaths, | |
exclude: [/[/\\\\]node_modules[/\\\\]/], | |
}, | |
{ | |
// "oneOf" will traverse all following loaders until one will | |
// match the requirements. When no loader matches it will fall | |
// back to the "file" loader at the end of the loader list. | |
oneOf: [ | |
// "url" loader works just like "file" loader but it also embeds | |
// assets smaller than specified size as data URLs to avoid requests. | |
{ | |
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/], | |
loader: require.resolve('url-loader'), | |
options: { | |
limit: 10000, | |
name: 'static/media/[name].[hash:8].[ext]', | |
}, | |
}, | |
// Process application JS with Babel. | |
// The preset includes JSX, Flow, and some ESnext features. | |
{ | |
test: /\.(js|jsx|mjs)$/, | |
include: paths.srcPaths, | |
exclude: [/[/\\\\]node_modules[/\\\\]/], | |
use: [ | |
// This loader parallelizes code compilation, it is optional but | |
// improves compile time on larger projects | |
require.resolve('thread-loader'), | |
{ | |
loader: require.resolve('babel-loader'), | |
options: { | |
presets: [require.resolve('babel-preset-react-app')], | |
plugins: [ | |
[ | |
require.resolve('babel-plugin-named-asset-import'), | |
{ | |
loaderMap: { | |
svg: { | |
ReactComponent: 'svgr/webpack![path]', | |
}, | |
}, | |
}, | |
], | |
], | |
compact: true, | |
highlightCode: true, | |
}, | |
}, | |
], | |
}, | |
// Process any JS outside of the app with Babel. | |
// Unlike the application JS, we only compile the standard ES features. | |
{ | |
test: /\.js$/, | |
use: [ | |
// This loader parallelizes code compilation, it is optional but | |
// improves compile time on larger projects | |
require.resolve('thread-loader'), | |
{ | |
loader: require.resolve('babel-loader'), | |
options: { | |
babelrc: false, | |
compact: false, | |
presets: [ | |
require.resolve('babel-preset-react-app/dependencies'), | |
], | |
cacheDirectory: true, | |
highlightCode: true, | |
}, | |
}, | |
], | |
}, | |
// The notation here is somewhat confusing. | |
// "postcss" loader applies autoprefixer to our CSS. | |
// "css" loader resolves paths in CSS and adds assets as dependencies. | |
// "style" loader normally turns CSS into JS modules injecting <style>, | |
// but unlike in development configuration, we do something different. | |
// `ExtractTextPlugin` first applies the "postcss" and "css" loaders | |
// (second argument), then grabs the result CSS and puts it into a | |
// separate file in our build process. This way we actually ship | |
// a single CSS file in production instead of JS code injecting <style> | |
// tags. If you use code splitting, however, any async bundles will still | |
// use the "style" loader inside the async code so CSS from them won't be | |
// in the main CSS file. | |
// By default we support CSS Modules with the extension .module.css | |
{ | |
test: /\.css$/, | |
exclude: /\.module\.css$/, | |
loader: ExtractTextPlugin.extract( | |
Object.assign( | |
{ | |
fallback: { | |
loader: require.resolve('style-loader'), | |
options: { | |
hmr: false, | |
}, | |
}, | |
use: [ | |
{ | |
loader: require.resolve('css-loader'), | |
options: { | |
importLoaders: 1, | |
minimize: true, | |
sourceMap: shouldUseSourceMap, | |
}, | |
}, | |
{ | |
loader: require.resolve('postcss-loader'), | |
options: postCSSLoaderOptions, | |
}, | |
], | |
}, | |
extractTextPluginOptions | |
) | |
), | |
// Note: this won't work without `new ExtractTextPlugin()` in `plugins`. | |
}, | |
// Adds support for CSS Modules (https://github.com/css-modules/css-modules) | |
// using the extension .module.css | |
{ | |
test: /\.module\.css$/, | |
loader: ExtractTextPlugin.extract( | |
Object.assign( | |
{ | |
fallback: { | |
loader: require.resolve('style-loader'), | |
options: { | |
hmr: false, | |
}, | |
}, | |
use: [ | |
{ | |
loader: require.resolve('css-loader'), | |
options: { | |
importLoaders: 1, | |
minimize: true, | |
sourceMap: shouldUseSourceMap, | |
modules: true, | |
localIdentName: '[path]__[name]___[local]', | |
}, | |
}, | |
{ | |
loader: require.resolve('postcss-loader'), | |
options: postCSSLoaderOptions, | |
}, | |
], | |
}, | |
extractTextPluginOptions | |
) | |
), | |
// Note: this won't work without `new ExtractTextPlugin()` in `plugins`. | |
}, | |
// The GraphQL loader preprocesses GraphQL queries in .graphql files. | |
{ | |
test: /\.(graphql)$/, | |
loader: 'graphql-tag/loader', | |
}, | |
// "file" loader makes sure assets end up in the `build` folder. | |
// When you `import` an asset, you get its filename. | |
// This loader doesn't use a "test" so it will catch all modules | |
// that fall through the other loaders. | |
{ | |
loader: require.resolve('file-loader'), | |
// Exclude `js` files to keep "css" loader working as it injects | |
// it's runtime that would otherwise be processed through "file" loader. | |
// Also exclude `html` and `json` extensions so they get processed | |
// by webpacks internal loaders. | |
exclude: [/\.(js|jsx|mjs)$/, /\.html$/, /\.json$/], | |
options: { | |
name: 'static/media/[name].[hash:8].[ext]', | |
}, | |
}, | |
// ** STOP ** Are you adding a new loader? | |
// Make sure to add the new loader(s) before the "file" loader. | |
], | |
}, | |
], | |
}, | |
optimization: { | |
splitChunks: { | |
cacheGroups: { | |
commons: { | |
test: /[\\/]node_modules[\\/]/, | |
name: 'vendor', | |
chunks: 'initial', | |
}, | |
}, | |
}, | |
minimizer: [ | |
// Minify the code. | |
new UglifyJsPlugin({ | |
uglifyOptions: { | |
compress: { | |
// Disabled because of an issue with Uglify breaking seemingly valid code: | |
// https://github.com/facebook/create-react-app/issues/2376 | |
// Pending further investigation: | |
// https://github.com/mishoo/UglifyJS2/issues/2011 | |
comparisons: false, | |
}, | |
output: { | |
comments: false, | |
// Turned on because emoji and regex is not minified properly using default | |
// https://github.com/facebook/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, | |
}), | |
], | |
}, | |
plugins: [ | |
// TODO: vire - LoaderOptionsPlugin needs to be removed | |
// see https://github.com/webpack/webpack/issues/6064 | |
new webpack.LoaderOptionsPlugin({ | |
options: { | |
context: process.cwd(), // or the same value as `context` | |
}, | |
}), | |
// Generates an `index.html` file with the <script> injected. | |
new HtmlWebpackPlugin({ | |
inject: true, | |
template: paths.appHtml, | |
minify: { | |
removeComments: true, | |
collapseWhitespace: true, | |
removeRedundantAttributes: true, | |
useShortDoctype: true, | |
removeEmptyAttributes: true, | |
removeStyleLinkTypeAttributes: true, | |
keepClosingSlash: true, | |
minifyJS: true, | |
minifyCSS: true, | |
minifyURLs: true, | |
}, | |
}), | |
// Makes some environment variables available in index.html. | |
// The public URL is available as %PUBLIC_URL% in index.html, e.g.: | |
// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico"> | |
// In production, it will be an empty string unless you specify "homepage" | |
// in `package.json`, in which case it will be the pathname of that URL. | |
new InterpolateHtmlPlugin(env.raw), | |
// Makes some environment variables available to the JS code, for example: | |
// if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`. | |
// It is absolutely essential that NODE_ENV was set to production here. | |
// Otherwise React will be compiled in the very slow development mode. | |
new webpack.DefinePlugin(env.stringified), | |
// Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`. | |
new ExtractTextPlugin({ | |
filename: cssFilename, | |
}), | |
// Generate a manifest file which contains a mapping of all asset filenames | |
// to their corresponding output file so that tools can pick it up without | |
// having to parse `index.html`. | |
new ManifestPlugin({ | |
fileName: 'asset-manifest.json', | |
publicPath, | |
}), | |
// Moment.js is an extremely popular library that bundles large locale files | |
// by default due to how Webpack interprets its code. This is a practical | |
// solution that requires the user to opt into importing specific locales. | |
// https://github.com/jmblog/how-to-optimize-momentjs-with-webpack | |
// You can remove this if you don't use Moment.js: | |
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/), | |
new SpeedMeasurePlugin(), | |
], | |
// Some libraries import Node modules but don't use them in the browser. | |
// Tell Webpack to provide empty mocks for them so importing them works. | |
node: { | |
dgram: 'empty', | |
fs: 'empty', | |
net: 'empty', | |
tls: 'empty', | |
child_process: 'empty', | |
}, | |
}; |
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