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Joe Haddad authored
* Add `PUBLIC_URL` env variable for advanced use (#937) * Add support for `PUBLIC_URL` env variable * Remove unnecessary duplications * Simplify served path choice logic * Honor PUBLIC_URL in development * Add e2e tests Enables serving static assets from specified host.
613b584f
// @remove-on-eject-begin/** * Copyright (c) 2015-present, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */// @remove-on-eject-endvar path = require('path');var autoprefixer = require('autoprefixer');var webpack = require('webpack');var findCacheDir = require('find-cache-dir');var HtmlWebpackPlugin = require('html-webpack-plugin');var CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');var InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');var WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');var getClientEnvironment = require('./env');var 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.var 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 shlash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.var publicUrl = '';// Get enrivonment variables to inject into our app.var env = getClientEnvironment(publicUrl);// 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 = { // This makes the bundle appear split into separate modules in the devtools. // We don't use source maps here because they can be confusing: // https://github.com/facebookincubator/create-react-app/issues/343#issuecomment-237241875 // You may want 'cheap-module-source-map' instead if you prefer source maps. 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: [ // Include WebpackDevServer client. It connects to WebpackDevServer via // sockets and waits for recompile notifications. When WebpackDevServer // recompiles, it sends a message to the client by socket. If only CSS // was changed, the app reload just the CSS. Otherwise, it will refresh. // The "?/" bit at the end tells the client to look for the socket at // the root path, i.e. /sockjs-node/. Otherwise visiting a client-side // route like /todos/42 would make it wrongly request /todos/42/sockjs-node. // The socket server is a part of WebpackDevServer which we are using. // The /sockjs-node/ path I'm referring to is hardcoded in WebpackDevServer. require.resolve('webpack-dev-server/client') + '?/', // Include Webpack hot module replacement runtime. Webpack is pretty // low-level so we need to put all the pieces together. The runtime listens // to the events received by the client above, and applies updates (such as // new CSS) to the running application. require.resolve('webpack/hot/dev-server'), // We ship a few polyfills by default. require.resolve('./polyfills'), // 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: { // Next line is not used in dev but WebpackDevServer crashes without it:7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
path: paths.appBuild,
// 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/bundle.js',
// This is the URL that app is served from. We use "/" in development.
publicPath: publicPath
},
resolve: {
// This allows you to set a fallback for where Webpack should look for modules.
// We read `NODE_PATH` environment variable in `paths.js` and pass paths here.
// We use `fallback` instead of `root` because we want `node_modules` to "win"
// if there any conflicts. This matches Node resolution mechanism.
// https://github.com/facebookincubator/create-react-app/issues/253
fallback: paths.nodePaths,
// 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/facebookincubator/create-react-app/issues/290
extensions: ['.js', '.json', '.jsx', ''],
alias: {
// Support React Native Web
// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
'react-native': 'react-native-web'
}
},
// @remove-on-eject-begin
// Resolve loaders (webpack plugins for CSS, images, transpilation) from the
// directory of `react-scripts` itself rather than the project directory.
resolveLoader: {
root: paths.ownNodeModules,
moduleTemplates: ['*-loader']
},
// @remove-on-eject-end
module: {
// First, run the linter.
// It's important to do this before Babel processes the JS.
preLoaders: [
{
test: /\.(js|jsx)$/,
loader: 'eslint',
include: paths.appSrc,
}
],
loaders: [
// Process JS with Babel.
{
test: /\.(js|jsx)$/,
include: paths.appSrc,
loader: 'babel',
query: {
// @remove-on-eject-begin
babelrc: false,
presets: [require.resolve('babel-preset-react-app')],
// @remove-on-eject-end
// This is a feature of `babel-loader` for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/react-scripts/
// directory for faster rebuilds. We use findCacheDir() because of:
// https://github.com/facebookincubator/create-react-app/issues/483
cacheDirectory: findCacheDir({
name: 'react-scripts'
})
}
},
// "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
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// in development "style" loader enables hot editing of CSS.
{
test: /\.css$/,
loader: 'style!css!postcss'
},
// JSON is not enabled by default in Webpack but both Node and Browserify
// allow it implicitly so we also enable it.
{
test: /\.json$/,
loader: 'json'
},
// "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.
{
test: /\.(ico|jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2)(\?.*)?$/,
loader: 'file',
query: {
name: 'static/media/[name].[hash:8].[ext]'
}
},
// "url" loader works just like "file" loader but it also embeds
// assets smaller than specified size as data URLs to avoid requests.
{
test: /\.(mp4|webm|wav|mp3|m4a|aac|oga)(\?.*)?$/,
loader: 'url',
query: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]'
}
}
]
},
// @remove-on-eject-begin
// Point ESLint to our predefined config.
eslint: {
configFile: path.join(__dirname, '../.eslintrc'),
useEslintrc: false
},
// @remove-on-eject-end
// We use PostCSS for autoprefixing only.
postcss: function() {
return [
autoprefixer({
browsers: [
'>1%',
'last 4 versions',
'Firefox ESR',
'not ie < 9', // React doesn't support IE8 anyway
]
}),
];
},
plugins: [
// Makes the public URL 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({
PUBLIC_URL: publicUrl
}),
// Generates an `index.html` file with the <script> injected.
new HtmlWebpackPlugin({
inject: true,
template: paths.appHtml,
}),
// Makes some environment variables available to the JS code, for example:
// if (process.env.NODE_ENV === 'development') { ... }. See `./env.js`.
new webpack.DefinePlugin(env),
// This is necessary to emit hot updates (currently CSS only):
new webpack.HotModuleReplacementPlugin(),
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// 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/facebookincubator/create-react-app/issues/240
new CaseSensitivePathsPlugin(),
// If you require a missing module and then `npm install` it, you still have
// to restart the development server for Webpack to discover it. This plugin
// makes the discovery automatic so you don't have to restart.
// See https://github.com/facebookincubator/create-react-app/issues/186
new WatchMissingNodeModulesPlugin(paths.appNodeModules)
],
// 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: {
fs: 'empty',
net: 'empty',
tls: 'empty'
}
};