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253 lines
9.5 KiB
253 lines
9.5 KiB
var autoprefixer = require('autoprefixer');
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var webpack = require('webpack');
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var HtmlWebpackPlugin = require('html-webpack-plugin');
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var ExtractTextPlugin = require('extract-text-webpack-plugin');
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var ManifestPlugin = require('webpack-manifest-plugin');
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var InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
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var url = require('url');
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var paths = require('./paths');
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var getClientEnvironment = require('./env');
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function ensureSlash(path, needsSlash) {
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var hasSlash = path.endsWith('/');
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if (hasSlash && !needsSlash) {
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return path.substr(path, path.length - 1);
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} else if (!hasSlash && needsSlash) {
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return path + '/';
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} else {
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return path;
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}
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}
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// We use "homepage" field to infer "public path" at which the app is served.
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// Webpack needs to know it to put the right <script> hrefs into HTML even in
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// single-page apps that may serve index.html for nested URLs like /todos/42.
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// We can't use a relative path in HTML because we don't want to load something
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// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
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var homepagePath = require(paths.appPackageJson).homepage;
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var homepagePathname = homepagePath ? url.parse(homepagePath).pathname : '/';
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// Webpack uses `publicPath` to determine where the app is being served from.
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// It requires a trailing slash, or the file assets will get an incorrect path.
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var publicPath = ensureSlash(homepagePathname, true);
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// `publicUrl` is just like `publicPath`, but we will provide it to our app
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// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
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// Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
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var publicUrl = ensureSlash(homepagePathname, false);
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// Get environment variables to inject into our app.
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var env = getClientEnvironment(publicUrl);
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// Assert this just to be safe.
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// Development builds of React are slow and not intended for production.
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if (env['process.env'].NODE_ENV !== '"production"') {
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throw new Error('Production builds must have NODE_ENV=production.');
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}
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// This is the production configuration.
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// It compiles slowly and is focused on producing a fast and minimal bundle.
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// The development configuration is different and lives in a separate file.
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module.exports = {
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// Don't attempt to continue if there are any errors.
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bail: true,
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// We generate sourcemaps in production. This is slow but gives good results.
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// You can exclude the *.map files from the build during deployment.
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devtool: 'source-map',
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// In production, we only want to load the polyfills and the app code.
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entry: [
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require.resolve('./polyfills'),
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paths.appIndexJs
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],
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output: {
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// The build folder.
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path: paths.appBuild,
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// Generated JS file names (with nested folders).
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// There will be one main bundle, and one file per asynchronous chunk.
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// We don't currently advertise code splitting but Webpack supports it.
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filename: 'static/js/[name].[chunkhash:8].js',
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chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
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// We inferred the "public path" (such as / or /my-project) from homepage.
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publicPath: publicPath
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},
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resolve: {
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// This allows you to set a fallback for where Webpack should look for modules.
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// We read `NODE_PATH` environment variable in `paths.js` and pass paths here.
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// We use `fallback` instead of `root` because we want `node_modules` to "win"
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// if there any conflicts. This matches Node resolution mechanism.
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// https://github.com/facebookincubator/create-react-app/issues/253
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fallback: paths.nodePaths,
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// These are the reasonable defaults supported by the Node ecosystem.
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// We also include JSX as a common component filename extension to support
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// some tools, although we do not recommend using it, see:
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// https://github.com/facebookincubator/create-react-app/issues/290
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extensions: ['.js', '.json', '.jsx', ''],
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alias: {
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// Support React Native Web
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// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
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'react-native': 'react-native-web'
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}
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},
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module: {
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// First, run the linter.
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// It's important to do this before Babel processes the JS.
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preLoaders: [
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{
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test: /\.(js|jsx)$/,
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loader: 'eslint',
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include: paths.appSrc
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}
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],
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loaders: [
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// Default loader: load all assets that are not handled
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// by other loaders with the url loader.
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// Note: This list needs to be updated with every change of extensions
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// the other loaders match.
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// E.g., when adding a loader for a new supported file extension,
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// we need to add the supported extension to this loader too.
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// Add one new line in `exclude` for each loader.
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//
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// "file" loader makes sure those assets end up in the `build` folder.
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// When you `import` an asset, you get its filename.
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// "url" loader works just like "file" loader but it also embeds
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// assets smaller than specified size as data URLs to avoid requests.
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{
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test: /\.scss$/,
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include: paths.appSrc,
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loaders: ["style", "css", "sass"]
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},
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{
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exclude: [
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/\.html$/,
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/\.(js|jsx)$/,
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/\.css$/,
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/\.json$/,
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/\.svg$/,
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/\.scss$/
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],
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loader: 'url',
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query: {
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limit: 10000,
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name: 'static/media/[name].[hash:8].[ext]'
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}
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},
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// Process JS with Babel.
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{
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test: /\.(js|jsx)$/,
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include: paths.appSrc,
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loader: 'babel',
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},
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// The notation here is somewhat confusing.
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// "postcss" loader applies autoprefixer to our CSS.
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// "css" loader resolves paths in CSS and adds assets as dependencies.
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// "style" loader normally turns CSS into JS modules injecting <style>,
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// but unlike in development configuration, we do something different.
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// `ExtractTextPlugin` first applies the "postcss" and "css" loaders
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// (second argument), then grabs the result CSS and puts it into a
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// separate file in our build process. This way we actually ship
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// a single CSS file in production instead of JS code injecting <style>
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// tags. If you use code splitting, however, any async bundles will still
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// use the "style" loader inside the async code so CSS from them won't be
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// in the main CSS file.
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{
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test: /\.css$/,
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loader: ExtractTextPlugin.extract('style', 'css?importLoaders=1!postcss')
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// Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
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},
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// JSON is not enabled by default in Webpack but both Node and Browserify
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// allow it implicitly so we also enable it.
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{
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test: /\.json$/,
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loader: 'json'
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},
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// "file" loader for svg
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{
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test: /\.svg$/,
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loader: 'file',
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query: {
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name: 'static/media/[name].[hash:8].[ext]'
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}
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}
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]
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},
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// We use PostCSS for autoprefixing only.
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postcss: function() {
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return [
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autoprefixer({
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browsers: [
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'>1%',
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'last 4 versions',
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'Firefox ESR',
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'not ie < 9', // React doesn't support IE8 anyway
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]
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}),
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];
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},
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plugins: [
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// Makes the public URL available as %PUBLIC_URL% in index.html, e.g.:
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// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
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// In production, it will be an empty string unless you specify "homepage"
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// in `package.json`, in which case it will be the pathname of that URL.
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new InterpolateHtmlPlugin({
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PUBLIC_URL: publicUrl
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}),
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// Generates an `index.html` file with the <script> injected.
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new HtmlWebpackPlugin({
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inject: true,
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template: paths.appHtml,
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minify: {
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removeComments: true,
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collapseWhitespace: true,
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removeRedundantAttributes: true,
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useShortDoctype: true,
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removeEmptyAttributes: true,
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removeStyleLinkTypeAttributes: true,
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keepClosingSlash: true,
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minifyJS: true,
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minifyCSS: true,
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minifyURLs: true
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}
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}),
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// Makes some environment variables available to the JS code, for example:
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// if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
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// It is absolutely essential that NODE_ENV was set to production here.
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// Otherwise React will be compiled in the very slow development mode.
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new webpack.DefinePlugin(env),
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// This helps ensure the builds are consistent if source hasn't changed:
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new webpack.optimize.OccurrenceOrderPlugin(),
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// Try to dedupe duplicated modules, if any:
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new webpack.optimize.DedupePlugin(),
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// Minify the code.
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new webpack.optimize.UglifyJsPlugin({
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compress: {
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screw_ie8: true, // React doesn't support IE8
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warnings: false
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},
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mangle: {
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screw_ie8: true
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},
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output: {
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comments: false,
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screw_ie8: true
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}
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}),
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// Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
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new ExtractTextPlugin('static/css/[name].[contenthash:8].css'),
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// Generate a manifest file which contains a mapping of all asset filenames
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// to their corresponding output file so that tools can pick it up without
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// having to parse `index.html`.
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new ManifestPlugin({
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fileName: 'asset-manifest.json'
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})
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],
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// Some libraries import Node modules but don't use them in the browser.
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// Tell Webpack to provide empty mocks for them so importing them works.
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node: {
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fs: 'empty',
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net: 'empty',
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tls: 'empty'
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}
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};
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