304 lines
12 KiB
JavaScript
304 lines
12 KiB
JavaScript
// @flow
|
|
const express = require("express");
|
|
/*:: import type {$Application as ExpressApp} from "express"; */
|
|
const os = require("os");
|
|
const path = require("path");
|
|
const webpack = require("webpack");
|
|
const RemoveBuildDirectoryPlugin = require("./RemoveBuildDirectoryPlugin");
|
|
const ManifestPlugin = require("webpack-manifest-plugin");
|
|
const SWPrecacheWebpackPlugin = require("sw-precache-webpack-plugin");
|
|
const StaticSiteGeneratorPlugin = require("static-site-generator-webpack-plugin");
|
|
const eslintFormatter = require("react-dev-utils/eslintFormatter");
|
|
const ModuleScopePlugin = require("react-dev-utils/ModuleScopePlugin");
|
|
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;
|
|
// 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);
|
|
|
|
function makeConfig(mode /*: "production" | "development" */) {
|
|
return {
|
|
// 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: {
|
|
main: [require.resolve("./polyfills"), paths.appIndexJs],
|
|
ssr: [
|
|
require.resolve("./polyfills"),
|
|
paths.appServerSideRenderingIndexJs,
|
|
],
|
|
},
|
|
devServer: {
|
|
inline: false,
|
|
before: (app /*: ExpressApp */) => {
|
|
// TODO(@wchargin): De-duplicate this code.
|
|
app.use(
|
|
"/api/v1/data",
|
|
express.static(
|
|
process.env.SOURCECRED_DIRECTORY ||
|
|
path.join(os.tmpdir(), "sourcecred")
|
|
)
|
|
);
|
|
},
|
|
},
|
|
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: publicPath,
|
|
// Point sourcemap entries to original disk location (format as URL on Windows)
|
|
devtoolModuleFilenameTemplate: (
|
|
info /*:
|
|
{|
|
|
// https://webpack.js.org/configuration/output/#output-devtoolmodulefilenametemplate
|
|
+absoluteResourcePath: string,
|
|
+allLoaders: string,
|
|
+hash: string,
|
|
+id: string,
|
|
+loaders: string,
|
|
+resource: string,
|
|
+resourcePath: string,
|
|
+namespace: string,
|
|
|}
|
|
*/
|
|
) =>
|
|
path
|
|
.relative(paths.appSrc, info.absoluteResourcePath)
|
|
.replace(/\\/g, "/"),
|
|
// We need to use a UMD module to build the static site.
|
|
libraryTarget: "umd",
|
|
},
|
|
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/facebookincubator/create-react-app/issues/253
|
|
modules: [
|
|
"node_modules",
|
|
paths.appNodeModules,
|
|
...(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/facebookincubator/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"],
|
|
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",
|
|
},
|
|
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: [
|
|
// TODO: Disable require.ensure as it's not a standard language feature.
|
|
// We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
|
|
// { 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.appSrc,
|
|
},
|
|
{
|
|
// "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 JS with Babel.
|
|
{
|
|
test: /\.(js|jsx|mjs)$/,
|
|
include: paths.appSrc,
|
|
loader: require.resolve("babel-loader"),
|
|
options: {
|
|
compact: true,
|
|
},
|
|
},
|
|
{
|
|
test: /\.css$/,
|
|
loader: "css-loader", // TODO(@wchargin): add csso-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 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.
|
|
],
|
|
},
|
|
],
|
|
},
|
|
plugins: plugins(mode),
|
|
// 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",
|
|
},
|
|
};
|
|
}
|
|
|
|
function plugins(mode /*: "development" | "production" */) {
|
|
const basePlugins = [
|
|
new StaticSiteGeneratorPlugin({
|
|
entry: "ssr",
|
|
// $ExpectFlowError(dynamic require)
|
|
paths: require(paths.appRouteData).routeData.map(({path}) => path),
|
|
locals: {},
|
|
}),
|
|
// 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),
|
|
// 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",
|
|
}),
|
|
// Generate a service worker script that will precache, and keep up to date,
|
|
// the HTML & assets that are part of the Webpack build.
|
|
new SWPrecacheWebpackPlugin({
|
|
// By default, a cache-busting query parameter is appended to requests
|
|
// used to populate the caches, to ensure the responses are fresh.
|
|
// If a URL is already hashed by Webpack, then there is no concern
|
|
// about it being stale, and the cache-busting can be skipped.
|
|
dontCacheBustUrlsMatching: /\.\w{8}\./,
|
|
filename: "service-worker.js",
|
|
logger(message) {
|
|
if (message.indexOf("Total precache size is") === 0) {
|
|
// This message occurs for every build and is a bit too noisy.
|
|
return;
|
|
}
|
|
if (message.indexOf("Skipping static resource") === 0) {
|
|
// This message obscures real errors so we ignore it.
|
|
// https://github.com/facebookincubator/create-react-app/issues/2612
|
|
return;
|
|
}
|
|
console.log(message);
|
|
},
|
|
minify: true,
|
|
// For unknown URLs, fallback to the index page
|
|
navigateFallback: publicUrl + "/index.html",
|
|
// Ignores URLs starting from /__ (useful for Firebase):
|
|
// https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
|
|
navigateFallbackWhitelist: [/^(?!\/__).*/],
|
|
// Don't precache sourcemaps (they're large) and build asset manifest:
|
|
staticFileGlobsIgnorePatterns: [/\.map$/, /asset-manifest\.json$/],
|
|
}),
|
|
// Moment.js is an extremely popular library that bundles large locale files
|
|
// by default due to how Webpack interprets its code. This is a practical
|
|
// solution that requires the user to opt into importing specific locales.
|
|
// https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
|
|
// You can remove this if you don't use Moment.js:
|
|
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
|
|
];
|
|
const prodOnlyPlugins = [
|
|
// Remove the output directory before starting the build.
|
|
new RemoveBuildDirectoryPlugin(),
|
|
// Minify the code.
|
|
new webpack.optimize.UglifyJsPlugin({
|
|
compress: {
|
|
warnings: false,
|
|
// Disabled because of an issue with Uglify breaking seemingly valid code:
|
|
// https://github.com/facebookincubator/create-react-app/issues/2376
|
|
// Pending further investigation:
|
|
// https://github.com/mishoo/UglifyJS2/issues/2011
|
|
comparisons: false,
|
|
},
|
|
mangle: {
|
|
safari10: true,
|
|
},
|
|
output: {
|
|
comments: false,
|
|
// Turned on because emoji and regex is not minified properly using default
|
|
// https://github.com/facebookincubator/create-react-app/issues/2488
|
|
ascii_only: true,
|
|
},
|
|
sourceMap: shouldUseSourceMap,
|
|
}),
|
|
];
|
|
switch (mode) {
|
|
case "development":
|
|
return basePlugins;
|
|
case "production":
|
|
return basePlugins.concat(prodOnlyPlugins);
|
|
default:
|
|
throw new Error(/*:: (*/ mode /*: empty) */);
|
|
}
|
|
}
|
|
|
|
function getMode() {
|
|
const mode = process.env.NODE_ENV;
|
|
if (mode !== "production" && mode !== "development") {
|
|
throw new Error("unknown mode: " + String(mode));
|
|
}
|
|
return mode;
|
|
}
|
|
|
|
module.exports = makeConfig(getMode());
|