import { resolve, join } from 'path' import { createHash } from 'crypto' import webpack from 'webpack' import glob from 'glob-promise' import WriteFilePlugin from 'write-file-webpack-plugin' import FriendlyErrorsWebpackPlugin from 'friendly-errors-webpack-plugin' import UnlinkFilePlugin from './plugins/unlink-file-plugin' import WatchPagesPlugin from './plugins/watch-pages-plugin' import WatchRemoveEventPlugin from './plugins/watch-remove-event-plugin' import DynamicEntryPlugin from './plugins/dynamic-entry-plugin' import DetachPlugin from './plugins/detach-plugin' import getConfig from '../config' export default async function createCompiler (dir, { dev = false } = {}) { dir = resolve(dir) const pages = await glob('pages/**/*.js', { cwd: dir, ignore: 'pages/_document.js' }) const entry = { 'main.js': dev ? require.resolve('../../client/next-dev') : require.resolve('../../client/next') } const defaultEntries = dev ? [join(__dirname, '..', '..', 'client/webpack-hot-middleware-client')] : [] for (const p of pages) { entry[join('bundles', p)] = defaultEntries.concat([`./${p}?entry`]) } const nextPagesDir = join(__dirname, '..', '..', 'pages') const errorEntry = join('bundles', 'pages', '_error.js') const defaultErrorPath = join(nextPagesDir, '_error.js') if (!entry[errorEntry]) { entry[errorEntry] = defaultEntries.concat([defaultErrorPath + '?entry']) } const errorDebugEntry = join('bundles', 'pages', '_error-debug.js') const errorDebugPath = join(nextPagesDir, '_error-debug.js') entry[errorDebugEntry] = errorDebugPath const nodeModulesDir = join(__dirname, '..', '..', '..', 'node_modules') const plugins = [ new WriteFilePlugin({ exitOnErrors: false, log: false, // required not to cache removed files useHashIndex: false }), new webpack.optimize.CommonsChunkPlugin({ name: 'commons', filename: 'commons.js', minChunks: Math.max(2, pages.length) }) ] if (dev) { plugins.push( new webpack.optimize.OccurrenceOrderPlugin(), new webpack.HotModuleReplacementPlugin(), new webpack.NoErrorsPlugin(), new DetachPlugin(), new DynamicEntryPlugin(), new UnlinkFilePlugin(), new WatchRemoveEventPlugin(), new WatchPagesPlugin(dir), new FriendlyErrorsWebpackPlugin() ) } else { plugins.push( new webpack.DefinePlugin({ 'process.env.NODE_ENV': JSON.stringify('production') }), new webpack.optimize.UglifyJsPlugin({ compress: { warnings: false }, sourceMap: false }) ) } const babelRuntimePath = require.resolve('babel-runtime/package') .replace(/[\\/]package\.json$/, '') const loaders = (dev ? [{ test: /\.js(\?[^?]*)?$/, loader: 'hot-self-accept-loader', include: [ join(dir, 'pages'), nextPagesDir ] }, { test: /\.js(\?[^?]*)?$/, loader: 'react-hot-loader/webpack', exclude: /node_modules/ }] : []) .concat([{ test: /\.json$/, loader: 'json-loader' }, { test: /\.(js|json)(\?[^?]*)?$/, loader: 'emit-file-loader', include: [dir, nextPagesDir], exclude (str) { return /node_modules/.test(str) && str.indexOf(nextPagesDir) !== 0 }, query: { name: 'dist/[path][name].[ext]' } }, { loader: 'babel', include: nextPagesDir, query: { babelrc: false, sourceMaps: dev ? 'both' : false, plugins: [ [ require.resolve('babel-plugin-module-resolver'), { alias: { 'ansi-html': require.resolve('ansi-html') } } ] ] } }, { test: /\.js(\?[^?]*)?$/, loader: 'babel', include: [dir, nextPagesDir], exclude (str) { return /node_modules/.test(str) && str.indexOf(nextPagesDir) !== 0 }, query: { babelrc: false, sourceMaps: dev ? 'both' : false, presets: ['es2015', 'react'], plugins: [ require.resolve('babel-plugin-react-require'), require.resolve('babel-plugin-transform-async-to-generator'), require.resolve('babel-plugin-transform-object-rest-spread'), require.resolve('babel-plugin-transform-class-properties'), require.resolve('babel-plugin-transform-runtime'), [ require.resolve('babel-plugin-module-resolver'), { alias: { 'babel-runtime': babelRuntimePath, react: require.resolve('react'), 'react-dom': require.resolve('react-dom'), 'next/link': require.resolve('../../lib/link'), 'next/prefetch': require.resolve('../../lib/prefetch'), 'next/css': require.resolve('../../lib/css'), 'next/head': require.resolve('../../lib/head'), 'next/document': require.resolve('../../server/document') } } ] ] } }]) const interpolateNames = new Map([ [defaultErrorPath, 'dist/pages/_error.js'], [errorDebugPath, 'dist/pages/_error-debug.js'] ]) let webpackConfig = { context: dir, entry, output: { path: join(dir, '.next'), filename: '[name]', libraryTarget: 'commonjs2', publicPath: dev ? '/_webpack/' : null, devtoolModuleFilenameTemplate ({ resourcePath }) { const hash = createHash('sha1') hash.update(Date.now() + '') const id = hash.digest('hex').slice(0, 7) // append hash id for cache busting return `webpack:///${resourcePath}?${id}` } }, resolve: { root: [ nodeModulesDir, join(dir, 'node_modules') ].concat( (process.env.NODE_PATH || '') .split(process.platform === 'win32' ? ';' : ':') ) }, resolveLoader: { root: [ nodeModulesDir, join(__dirname, 'loaders') ] }, plugins, module: { loaders }, devtool: dev ? 'inline-source-map' : false, customInterpolateName: function (url, name, opts) { return interpolateNames.get(this.resourcePath) || url } } const config = getConfig(dir) if (config.webpack) { console.log('> Using Webpack config function defined in next.config.js.') webpackConfig = await config.webpack(webpackConfig, { dev }) } return webpack(webpackConfig) }