chore: wip

packages/nuxt3/src/builder/app.ts

@@ -1,4 +1,5 @@
 import { resolve } from 'path'
+import { createWatcher } from './watch'
 
 export interface NuxtRoute {
   path: ''

packages/nuxt3/src/builder/builder.ts

@@ -1,11 +1,15 @@
+import { join } from 'path'
+import fsExtra from 'fs-extra'
 import { BundleBuilder } from 'src/webpack'
 import { Nuxt } from '../core'
-import { copyTemplates } from './template'
+import { compileTemplates, scanTemplates, NuxtTemplate } from './template'
+import { createWatcher } from './watch'
 import { resolveApp, NuxtApp } from './app'
 
 export class Builder {
   nuxt: Nuxt
   app: NuxtApp
+  templates: NuxtTemplate[]
 
   constructor (nuxt) {
     this.nuxt = nuxt
@@ -17,15 +21,64 @@ export class Builder {
 }
 
 // Extends VueRouter
-async function build (builder: Builder) {
+async function build(builder: Builder) {
   const { nuxt } = builder
 
-  builder.app = resolveApp(nuxt, nuxt.options.srcDir)
-  await copyTemplates(builder)
+  await generate(builder)
+
+  if (nuxt.options.dev) {
+    watch(builder)
+  }
 
   await bundle(builder)
 }
 
+function watch(builder: Builder) {
+  const { nuxt } = builder
+
+  // Watch internal templates
+  const nuxtAppWatcher = createWatcher(nuxt.options.appDir)
+  // nuxtAppWatcher.debug()
+  nuxtAppWatcher.watchAll(async () => {
+    console.log('Re-generate templates')
+    await compileTemplates(builder.templates, nuxt.options.buildDir)
+  })
+
+  // Watch user app
+  const appWatcher = createWatcher(builder.app.srcDir, {
+    ignored: [
+      nuxt.options.buildDir
+    ]
+  })
+  // appWatcher.debug()
+  appWatcher.watch(/(A|a)pp\.[a-z]{2,3}/, async () => {
+    await new Promise((resolve) => setTimeout(resolve, 200))
+    await generate(builder)
+  })
+  appWatcher.watch('pages/', async () => {
+    console.log('Re-generate routes')
+    await compileTemplates(builder.templates, nuxt.options.buildDir)
+  })
+}
+
+export async function generate(builder: Builder) {
+  const { nuxt } = builder
+
+  await fsExtra.mkdirp(nuxt.options.buildDir)
+  builder.app = resolveApp(nuxt, nuxt.options.srcDir)
+
+  const templatesDir = join(builder.nuxt.options.appDir, '_templates')
+  const appTemplates = await scanTemplates(templatesDir, {
+    app: builder.app
+  })
+
+  builder.templates = [
+    ...appTemplates
+  ]
+
+  await compileTemplates(builder.templates, nuxt.options.buildDir)
+}
+
 async function bundle ({ nuxt }: Builder) {
   // TODO: get rid of this context and directly pass nuxt to BundleBuilder
   const bundleBuilder = new BundleBuilder({

packages/nuxt3/src/builder/template.ts

@@ -1,26 +1,40 @@
-import { resolve, join, sep } from 'path'
+import { join, relative, dirname } from 'path'
 import fsExtra from 'fs-extra'
 import globby from 'globby'
 import lodashTemplate from 'lodash/template'
-import { Builder } from './builder'
 
-export async function copyTemplates ({ nuxt, app }: Builder) {
-  // Resolve appDir
-  const templatesDir = join(nuxt.options.appDir, '_templates')
-
-  const templateFiles = (await globby(join(templatesDir, '/**')))
-    .map(f => f.replace(templatesDir + sep, ''))
-
-  await fsExtra.mkdirp(nuxt.options.buildDir)
-
-  for (const template of templateFiles) {
-    const src = resolve(templatesDir, template)
-    const dst = resolve(nuxt.options.buildDir, template)
-
-    const templateData = { app: Object.freeze(app) }
-    const srcContents = await fsExtra.readFile(src, 'utf-8')
-    const compiledSrc = lodashTemplate(srcContents, {})(templateData)
-
-    await fsExtra.writeFile(dst, compiledSrc)
-  }
+interface NuxtTemplate {
+  src: string // Absolute path to source file
+  path: string // Relative path of destination
+  data?: any
+}
+
+async function compileTemplate({ src, path, data }: NuxtTemplate, destDir: string) {
+  const srcContents = await fsExtra.readFile(src, 'utf-8')
+  const compiledSrc = lodashTemplate(srcContents, {})(data)
+  const dest = join(destDir, path)
+  console.log('Compile template', dest)
+  await fsExtra.mkdirp(dirname(dest))
+  await fsExtra.writeFile(dest, compiledSrc)
+}
+
+export async function compileTemplates(templates: NuxtTemplate[], destDir: string) {
+  return Promise.all(templates.map(t => compileTemplate(t, destDir)))
+}
+
+export async function scanTemplates (dir: string, data?: Object) {
+  const templateFiles = (await globby(join(dir, '/**')))
+
+  return templateFiles.map(src => ({
+    src,
+    path: relative(dir, src),
+    data
+  }))
+}
+
+export async function watchTemplate(template: NuxtTemplate, watcher: any, cb: Function) {
+  template.data = new Proxy(template.data, {
+    // TODO: deep watch option changes
+  })
+  // TODO: Watch fs changes
 }

packages/nuxt3/src/builder/watch.ts

@@ -0,0 +1,40 @@
+import chokidar, { WatchOptions } from 'chokidar'
+import { relative } from 'path'
+
+export function createWatcher(dir: string|string[], options?: WatchOptions) {
+  const watcher = chokidar.watch(dir, {
+    ignored: [],
+    ignoreInitial: true,
+    ...options
+  })
+
+  const watchAll = (cb: Function, filter?: Function) => {
+    watcher.on('raw', (event, path: string, details) => {
+      if (options.ignored.find(ignore => path.match(ignore))) {
+        return // 🖕 chokidar ignored option
+      }
+      path = relative(dir, path)
+      const _event = { event, path }
+      if (!filter || filter(_event)) {
+        cb(_event)
+      }
+    })
+  }
+
+  const watch = (pattern: string| RegExp, cb: Function) => watchAll(cb, e => e.path.match(pattern))
+
+  const debug = (tag: string = '[Watcher]') => {
+    console.log(tag, 'Watching ', dir)
+    watchAll((e) => {
+      console.log(tag, e.event, e.path)
+    })
+  }
+
+  return {
+    watchAll,
+    watch,
+    debug
+  }
+}
+
+export type Watcher = ReturnType<typeof createWatcher>

packages/nuxt3/src/webpack/config/base.ts

@@ -4,7 +4,8 @@ import TimeFixPlugin from 'time-fix-plugin'
 import cloneDeep from 'lodash/cloneDeep'
 import escapeRegExp from 'lodash/escapeRegExp'
 import VueLoaderPlugin from 'vue-loader/dist/pluginWebpack5'
-import ExtractCssChunksPlugin from 'extract-css-chunks-webpack-plugin'
+// import ExtractCssChunksPlugin from 'extract-css-chunks-webpack-plugin'
+import MiniCssExtractPlugin from 'mini-css-extract-plugin'
 import TerserWebpackPlugin from 'terser-webpack-plugin'
 import WebpackBar from 'webpackbar'
 import env from 'std-env'
@@ -398,7 +399,7 @@ export default class WebpackBaseConfig {
 
     // CSS extraction)
     if (buildOptions.extractCSS) {
-      plugins.push(new ExtractCssChunksPlugin(Object.assign({
+      plugins.push(new MiniCssExtractPlugin(Object.assign({
         filename: this.getFileName('css'),
         chunkFilename: this.getFileName('css')
       }, buildOptions.extractCSS)))
@@ -446,7 +447,7 @@ export default class WebpackBaseConfig {
 
     // CSS extraction
     if (this.buildContext.buildOptions.extractCSS) {
-      plugins.push(new ExtractCssChunksPlugin(Object.assign({
+      plugins.push(new MiniCssExtractPlugin(Object.assign({
         filename: this.getFileName('css'),
         chunkFilename: this.getFileName('css'),
         // TODO: https://github.com/faceyspacey/extract-css-chunks-webpack-plugin/issues/132

packages/nuxt3/src/webpack/utils/style-loader.ts

@@ -1,5 +1,6 @@
 import path from 'path'
-import ExtractCssChunksPlugin from 'extract-css-chunks-webpack-plugin'
+// import ExtractCssChunksPlugin from 'extract-css-chunks-webpack-plugin'
+import MiniCssExtractPlugin from 'mini-css-extract-plugin'
 
 import { wrapArray } from 'src/utils'
 
@@ -20,8 +21,9 @@ export default class StyleLoader {
     return this.buildContext.buildOptions.extractCSS
   }
 
-  get onlyLocals () {
-    return Boolean(this.isServer && this.extractCSS)
+  get onlyLocals() {
+    // Not supported anymore by css-loader
+    return false // Boolean(this.isServer && this.extractCSS)
   }
 
   normalize (loaders) {
@@ -86,7 +88,7 @@ export default class StyleLoader {
     if (this.extractCSS) {
       const isDev = this.buildContext.options.dev
       return {
-        loader: ExtractCssChunksPlugin.loader,
+        loader: MiniCssExtractPlugin.loader,
         options: {
           // TODO: https://github.com/faceyspacey/extract-css-chunks-webpack-plugin/issues/132
           // https://github.com/faceyspacey/extract-css-chunks-webpack-plugin/issues/161#issuecomment-500162574