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December 7, 2017 21:40
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var autoprefixer = require('autoprefixer'); | |
var webpack = require('webpack'); | |
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 slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz. | |
var publicUrl = ''; | |
// Get environment 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 = { | |
// You may want 'eval' instead if you prefer to see the compiled output in DevTools. | |
// See the discussion in https://github.com/facebookincubator/create-react-app/issues/343. | |
devtool: 'cheap-module-source-map', | |
// 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 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'), | |
// 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: | |
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' | |
} | |
}, | |
module: { | |
// First, run the linter. | |
// It's important to do this before Babel processes the JS. | |
preLoaders: [ | |
{ | |
test: /\.(js|jsx)$/, | |
loader: 'eslint', | |
include: paths.appSrc, | |
} | |
], | |
loaders: [ | |
// Default loader: load all assets that are not handled | |
// by other loaders with the url loader. | |
// Note: This list needs to be updated with every change of extensions | |
// the other loaders match. | |
// E.g., when adding a loader for a new supported file extension, | |
// we need to add the supported extension to this loader too. | |
// Add one new line in `exclude` for each loader. | |
// | |
// "file" loader makes sure those assets get served by WebpackDevServer. | |
// When you `import` an asset, you get its (virtual) filename. | |
// In production, they would get copied to the `build` folder. | |
// "url" loader works like "file" loader except that it embeds assets | |
// smaller than specified limit in bytes as data URLs to avoid requests. | |
// A missing `test` is equivalent to a match. | |
{ | |
exclude: [ | |
/\.html$/, | |
/\.(js|jsx)$/, | |
/\.css$/, | |
/\.json$/, | |
/\.woff$/, | |
/\.woff2$/, | |
/\.(ttf|svg|eot)$/ | |
], | |
loader: 'url', | |
query: { | |
limit: 10000, | |
name: 'static/media/[name].[hash:8].[ext]' | |
} | |
}, | |
// Process JS with Babel. | |
{ | |
test: /\.(js|jsx)$/, | |
include: paths.appSrc, | |
loader: 'babel', | |
query: { | |
// This is a feature of `babel-loader` for webpack (not Babel itself). | |
// It enables caching results in ./node_modules/.cache/babel-loader/ | |
// directory for faster rebuilds. | |
cacheDirectory: true | |
} | |
}, | |
// "postcss" loader applies autoprefixer to our CSS. | |
// "css" loader resolves paths in CSS and adds assets as dependencies. | |
// "style" loader turns CSS into JS modules that inject <style> tags. | |
// In production, we use a plugin to extract that CSS to a file, but | |
// in development "style" loader enables hot editing of CSS. | |
{ | |
test: /\.css$/, | |
loader: 'style!css?importLoaders=1!postcss' | |
}, | |
// JSON is not enabled by default in Webpack but both Node and Browserify | |
// allow it implicitly so we also enable it. | |
{ | |
test: /\.json$/, | |
loader: 'json' | |
}, | |
// "file" loader for svg | |
{ | |
test: /\.svg$/, | |
loader: 'file', | |
query: { | |
name: 'static/media/[name].[hash:8].[ext]' | |
} | |
}, | |
// "file" loader for fonts | |
{ | |
test: /\.woff$/, | |
loader: 'file', | |
query: { | |
name: 'fonts/[name].[hash].[ext]' | |
} | |
}, | |
{ | |
test: /\.woff2$/, | |
loader: 'file', | |
query: { | |
name: 'fonts/[name].[hash].[ext]' | |
} | |
}, | |
{ | |
test: /\.(ttf|eot)$/, | |
loader: 'file', | |
query: { | |
name: 'fonts/[name].[hash].[ext]' | |
} | |
}, | |
// Truffle solidity loader to watch for changes in Solitiy files and hot | |
// reload contracts with webpack. | |
// | |
// CURRENTLY REMOVED DUE TO INCOMPATIBILITY WITH TRUFFLE 3 | |
// Compile and migrate contracts manually. | |
// | |
/*{ | |
test: /\.sol$/, | |
loader: 'truffle-solidity?network_id=123' | |
}*/ | |
] | |
}, | |
// 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(), | |
// 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' | |
} | |
}; |
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