import util from 'util' import path from 'path' import fs from 'fs' import _ from 'lodash' import chokidar from 'chokidar' import fsExtra from 'fs-extra' import hash from 'hash-sum' import webpack from 'webpack' import serialize from 'serialize-javascript' import MFS from 'memory-fs' import webpackDevMiddleware from 'webpack-dev-middleware' import webpackHotMiddleware from 'webpack-hot-middleware' import Glob from 'glob' import upath from 'upath' import consola from 'consola' import { r, wp, wChunk, createRoutes, parallel, sequence, relativeTo, waitFor } from '../common/utils' import Options from '../common/options' import PerfLoader from './webpack/utils/perf-loader' import ClientWebpackConfig from './webpack/client' import ServerWebpackConfig from './webpack/server' const glob = util.promisify(Glob) export default class Builder { constructor(nuxt) { this.nuxt = nuxt this.isStatic = false // Flag to know if the build is for a generated app this.options = nuxt.options // Fields that set on build this.compilers = [] this.compilersWatching = [] this.webpackDevMiddleware = null this.webpackHotMiddleware = null this.filesWatcher = null this.customFilesWatcher = null this.perfLoader = null // Helper to resolve build paths this.relativeToBuild = (...args) => relativeTo(this.options.buildDir, ...args) this._buildStatus = STATUS.INITIAL // Stop watching on nuxt.close() if (this.options.dev) { this.nuxt.hook('close', () => this.unwatch()) } // Initialize shared FS and Cache if (this.options.dev) { this.mfs = new MFS() } // if(!this.options.dev) { // TODO: enable again when unsafe concern resolved.(common/options.js:42) // this.nuxt.hook('build:done', () => this.generateConfig()) // } } get plugins() { return _.uniqBy( this.options.plugins.map((p, i) => { if (typeof p === 'string') p = { src: p } const pluginBaseName = path.basename(p.src, path.extname(p.src)).replace( /[^a-zA-Z?\d\s:]/g, '' ) return { src: this.nuxt.resolveAlias(p.src), ssr: p.ssr !== false, name: 'nuxt_plugin_' + pluginBaseName + '_' + hash(p.src) } }), p => p.name ) } forGenerate() { this.isStatic = true } async build() { // Avoid calling build() method multiple times when dev:true /* istanbul ignore if */ if (this._buildStatus === STATUS.BUILD_DONE && this.options.dev) { return this } // If building /* istanbul ignore if */ if (this._buildStatus === STATUS.BUILDING) { await waitFor(1000) return this.build() } this._buildStatus = STATUS.BUILDING consola.info({ message: 'Building project', badge: true, clear: true }) // Wait for nuxt ready await this.nuxt.ready() // Call before hook await this.nuxt.callHook('build:before', this, this.options.build) // Check if pages dir exists and warn if not this._nuxtPages = typeof this.options.build.createRoutes !== 'function' if (this._nuxtPages) { if (!fsExtra.existsSync(path.join(this.options.srcDir, this.options.dir.pages))) { let dir = this.options.srcDir if (fsExtra.existsSync(path.join(this.options.srcDir, '..', this.options.dir.pages))) { throw new Error( `No \`${this.options.dir.pages}\` directory found in ${dir}. Did you mean to run \`nuxt\` in the parent (\`../\`) directory?` ) } else { this._defaultPage = true } } } consola.success('Builder initialized') consola.debug(`App root: ${this.options.srcDir}`) // Create .nuxt/, .nuxt/components and .nuxt/dist folders await fsExtra.remove(r(this.options.buildDir)) await fsExtra.mkdirp(r(this.options.buildDir, 'components')) if (!this.options.dev) { await fsExtra.mkdirp(r(this.options.buildDir, 'dist')) } // Generate routes and interpret the template files await this.generateRoutesAndFiles() // Start webpack build await this.webpackBuild() // Flag to set that building is done this._buildStatus = STATUS.BUILD_DONE // Call done hook await this.nuxt.callHook('build:done', this) return this } async generateRoutesAndFiles() { consola.debug(`Generating nuxt files`) // -- Templates -- let templatesFiles = [ 'App.js', 'client.js', 'index.js', 'middleware.js', 'router.js', 'server.js', 'utils.js', 'empty.js', 'components/nuxt-error.vue', 'components/nuxt-loading.vue', 'components/nuxt-child.js', 'components/nuxt-link.js', 'components/nuxt.js', 'components/no-ssr.js', 'views/app.template.html', 'views/error.html' ] const templateVars = { options: this.options, extensions: this.options.extensions .map(ext => ext.replace(/^\./, '')) .join('|'), messages: this.options.messages, splitChunks: this.options.build.splitChunks, uniqBy: _.uniqBy, isDev: this.options.dev, debug: this.options.debug, mode: this.options.mode, router: this.options.router, env: this.options.env, head: this.options.head, middleware: fsExtra.existsSync(path.join(this.options.srcDir, this.options.dir.middleware)), store: this.options.store, css: this.options.css, plugins: this.plugins, appPath: './App.js', ignorePrefix: this.options.ignorePrefix, layouts: Object.assign({}, this.options.layouts), loading: typeof this.options.loading === 'string' ? this.relativeToBuild(this.options.srcDir, this.options.loading) : this.options.loading, transition: this.options.transition, layoutTransition: this.options.layoutTransition, dir: this.options.dir, components: { ErrorPage: this.options.ErrorPage ? this.relativeToBuild(this.options.ErrorPage) : null } } // -- Layouts -- if (fsExtra.existsSync(path.resolve(this.options.srcDir, this.options.dir.layouts))) { const layoutsFiles = await glob(`${this.options.dir.layouts}/**/*.{vue,js}`, { cwd: this.options.srcDir, ignore: this.options.ignore }) let hasErrorLayout = false layoutsFiles.forEach(file => { let name = file .split('/') .slice(1) .join('/') .replace(/\.(vue|js)$/, '') if (name === 'error') { hasErrorLayout = true return } if (!templateVars.layouts[name] || /\.vue$/.test(file)) { templateVars.layouts[name] = this.relativeToBuild( this.options.srcDir, file ) } }) if (!templateVars.components.ErrorPage && hasErrorLayout) { templateVars.components.ErrorPage = this.relativeToBuild( this.options.srcDir, `${this.options.dir.layouts}/error.vue` ) } } // If no default layout, create its folder and add the default folder if (!templateVars.layouts.default) { await fsExtra.mkdirp(r(this.options.buildDir, 'layouts')) templatesFiles.push('layouts/default.vue') templateVars.layouts.default = './layouts/default.vue' } // -- Routes -- consola.debug('Generating routes...') if (this._defaultPage) { templateVars.router.routes = createRoutes( ['index.vue'], this.options.nuxtAppDir + '/pages' ) } else if (this._nuxtPages) { // If user defined a custom method to create routes // Use nuxt.js createRoutes bases on pages/ const files = {} ;(await glob(`${this.options.dir.pages}/**/*.{vue,js}`, { cwd: this.options.srcDir, ignore: this.options.ignore })).forEach(f => { const key = f.replace(/\.(js|vue)$/, '') if (/\.vue$/.test(f) || !files[key]) { files[key] = f.replace(/(['|"])/g, '\\$1') } }) templateVars.router.routes = createRoutes( Object.values(files), this.options.srcDir, this.options.dir.pages ) } else { templateVars.router.routes = this.options.build.createRoutes( this.options.srcDir ) } await this.nuxt.callHook( 'build:extendRoutes', templateVars.router.routes, r ) // router.extendRoutes method if (typeof this.options.router.extendRoutes === 'function') { // let the user extend the routes const extendedRoutes = this.options.router.extendRoutes( templateVars.router.routes, r ) // Only overwrite routes when something is returned for backwards compatibility if (extendedRoutes !== undefined) { templateVars.router.routes = extendedRoutes } } // Make routes accessible for other modules and webpack configs this.routes = templateVars.router.routes // -- Store -- // Add store if needed if (this.options.store) { templatesFiles.push('store.js') } // Resolve template files const customTemplateFiles = this.options.build.templates.map( t => t.dst || path.basename(t.src || t) ) templatesFiles = templatesFiles .map(file => { // Skip if custom file was already provided in build.templates[] if (customTemplateFiles.indexOf(file) !== -1) { return } // Allow override templates using a file with same name in ${srcDir}/app const customPath = r(this.options.srcDir, 'app', file) const customFileExists = fsExtra.existsSync(customPath) return { src: customFileExists ? customPath : r(this.options.nuxtAppDir, file), dst: file, custom: customFileExists } }) .filter(i => !!i) // -- Custom templates -- // Add custom template files templatesFiles = templatesFiles.concat( this.options.build.templates.map(t => { return Object.assign( { src: r(this.options.srcDir, t.src || t), dst: t.dst || path.basename(t.src || t), custom: true }, t ) }) ) // -- Loading indicator -- if (this.options.loadingIndicator.name) { const indicatorPath1 = path.resolve( this.options.nuxtAppDir, 'views/loading', this.options.loadingIndicator.name + '.html' ) const indicatorPath2 = this.nuxt.resolveAlias( this.options.loadingIndicator.name ) const indicatorPath = fsExtra.existsSync(indicatorPath1) ? indicatorPath1 : fsExtra.existsSync(indicatorPath2) ? indicatorPath2 : null if (indicatorPath) { templatesFiles.push({ src: indicatorPath, dst: 'loading.html', options: this.options.loadingIndicator }) } else { /* istanbul ignore next */ // eslint-disable-next-line no-console console.error( `Could not fetch loading indicator: ${ this.options.loadingIndicator.name }` ) } } await this.nuxt.callHook('build:templates', { templatesFiles, templateVars, resolve: r }) // Interpret and move template files to .nuxt/ await Promise.all( templatesFiles.map(async ({ src, dst, options, custom }) => { // Add template to watchers this.options.build.watch.push(src) // Render template to dst const fileContent = await fsExtra.readFile(src, 'utf8') let content try { const template = _.template(fileContent, { imports: { serialize, hash, r, wp, wChunk, resolvePath: this.nuxt.resolvePath.bind(this.nuxt), resolveAlias: this.nuxt.resolveAlias.bind(this.nuxt), relativeToBuild: this.relativeToBuild } }) content = template( Object.assign({}, templateVars, { options: options || {}, custom, src, dst }) ) } catch (err) { /* istanbul ignore next */ throw new Error(`Could not compile template ${src}: ${err.message}`) } const _path = r(this.options.buildDir, dst) // Ensure parent dir exits await fsExtra.mkdirp(path.dirname(_path)) // Write file await fsExtra.writeFile(_path, content, 'utf8') }) ) consola.success('Nuxt files generated') } async webpackBuild() { this.perfLoader = new PerfLoader(this.options) const compilersOptions = [] // Client const clientConfig = new ClientWebpackConfig(this).config() compilersOptions.push(clientConfig) // Server let serverConfig = null if (this.options.build.ssr) { serverConfig = new ServerWebpackConfig(this).config() compilersOptions.push(serverConfig) } // Alias plugins to their real path this.plugins.forEach(p => { const src = this.relativeToBuild(p.src) // Client config if (!clientConfig.resolve.alias[p.name]) { clientConfig.resolve.alias[p.name] = src } // Server config if (serverConfig && !serverConfig.resolve.alias[p.name]) { // Alias to noop for ssr:false plugins serverConfig.resolve.alias[p.name] = p.ssr ? src : './empty.js' } }) // Configure compilers this.compilers = compilersOptions.map(compilersOption => { const compiler = webpack(compilersOption) // In dev, write files in memory FS if (this.options.dev) { compiler.outputFileSystem = this.mfs } return compiler }) // Warmup perfLoader before build if (this.options.build.parallel) { consola.info('Warming up worker pools') this.perfLoader.warmupAll() consola.success('Worker pools ready') } // Start Builds const runner = this.options.dev ? parallel : sequence await runner(this.compilers, compiler => { return this.webpackCompile(compiler) }) } webpackCompile(compiler) { return new Promise(async (resolve, reject) => { const name = compiler.options.name await this.nuxt.callHook('build:compile', { name, compiler }) // Load renderer resources after build compiler.hooks.done.tap('load-resources', async stats => { await this.nuxt.callHook('build:compiled', { name, compiler, stats }) // Reload renderer if available this.nuxt.renderer.loadResources(this.mfs || fs) // Resolve on next tick process.nextTick(resolve) }) if (this.options.dev) { // --- Dev Build --- // Client Build, watch is started by dev-middleware if (compiler.options.name === 'client') { return this.webpackDev(compiler) } // Server, build and watch for changes this.compilersWatching.push( compiler.watch(this.options.watchers.webpack, err => { /* istanbul ignore if */ if (err) return reject(err) }) ) } else { // --- Production Build --- compiler.run((err, stats) => { /* istanbul ignore next */ if (err) { return reject(err) } else if (stats.hasErrors()) { if (this.options.test) { err = stats.toString(this.options.build.stats) } return reject(err) } resolve() }) } }) } webpackDev(compiler) { consola.debug('Adding webpack middleware...') // Create webpack dev middleware this.webpackDevMiddleware = util.promisify( webpackDevMiddleware( compiler, Object.assign( { publicPath: this.options.build.publicPath, stats: false, logLevel: 'silent', watchOptions: this.options.watchers.webpack }, this.options.build.devMiddleware ) ) ) this.webpackDevMiddleware.close = util.promisify(this.webpackDevMiddleware.close) this.webpackHotMiddleware = util.promisify( webpackHotMiddleware( compiler, Object.assign( { log: false, heartbeat: 10000 }, this.options.build.hotMiddleware ) ) ) // Inject to renderer instance if (this.nuxt.renderer) { this.nuxt.renderer.webpackDevMiddleware = this.webpackDevMiddleware this.nuxt.renderer.webpackHotMiddleware = this.webpackHotMiddleware } // Start watching files this.watchFiles() } watchFiles() { const src = this.options.srcDir let patterns = [ r(src, this.options.dir.layouts), r(src, this.options.dir.store), r(src, this.options.dir.middleware), r(src, `${this.options.dir.layouts}/*.{vue,js}`), r(src, `${this.options.dir.layouts}/**/*.{vue,js}`) ] if (this._nuxtPages) { patterns.push( r(src, this.options.dir.pages), r(src, `${this.options.dir.pages}/*.{vue,js}`), r(src, `${this.options.dir.pages}/**/*.{vue,js}`) ) } patterns = _.map(patterns, p => upath.normalizeSafe(p)) const options = Object.assign({}, this.options.watchers.chokidar, { ignoreInitial: true }) /* istanbul ignore next */ const refreshFiles = _.debounce(() => this.generateRoutesAndFiles(), 200) // Watch for src Files this.filesWatcher = chokidar .watch(patterns, options) .on('add', refreshFiles) .on('unlink', refreshFiles) // Watch for custom provided files let customPatterns = _.concat( this.options.build.watch, ..._.values(_.omit(this.options.build.styleResources, ['options'])) ) customPatterns = _.map(_.uniq(customPatterns), p => upath.normalizeSafe(p) ) this.customFilesWatcher = chokidar .watch(customPatterns, options) .on('change', refreshFiles) } async unwatch() { if (this.filesWatcher) { this.filesWatcher.close() } if (this.customFilesWatcher) { this.customFilesWatcher.close() } this.compilersWatching.forEach(watching => watching.close()) // Stop webpack middleware if (this.webpackDevMiddleware) { await this.webpackDevMiddleware.close() } } // TODO: remove ignore when generateConfig enabled again async generateConfig() /* istanbul ignore next */ { const config = path.resolve(this.options.buildDir, 'build.config.js') const options = _.omit(this.options, Options.unsafeKeys) await fsExtra.writeFile( config, `export default ${JSON.stringify(options, null, ' ')}`, 'utf8' ) } } const STATUS = { INITIAL: 1, BUILD_DONE: 2, BUILDING: 3 }