Angular 2, @ngtools/webpack, AOT

匿名 (未验证) 提交于 2019-12-03 09:05:37

问题:

I'm trying to use AOT in Angular 2 using webpack and @ngtools/webpack.

I don't have any error with the compilation, but when I open the site on the browser I get a console error:

No NgModule metadata found for 'AppModule'

My AotPlugin on webpack configuration is this:

new AotPlugin({     tsConfigPath: 'tsconfig.json',     entryModule: helpers.root('src/app/app.module.ts#AppModule') }) 

My app.module.ts is:

@NgModule({ bootstrap: [ App ], imports: [ // import Angular's modules     BrowserModule,     RouterModule.forRoot(ROUTES),     SharedModule ], declarations: [     App,     HomeComponent, ], providers: providers }) export class AppModule {} 

and my main.browser.ts:

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { AppModule } from "./app/app.module";  const platform = platformBrowserDynamic(); platform.bootstrapModule(AppModule); 

My tsconfig.json:

{   "compilerOptions": {     "target": "es5",     "module": "commonjs",     "moduleResolution": "node",     "emitDecoratorMetadata": true,     "experimentalDecorators": true,     "allowSyntheticDefaultImports": true,     "sourceMap": true,     "noEmitHelpers": true,     "removeComments": true,     "lib": ["es6", "dom"],     "strictNullChecks": false,     "baseUrl": "./src",     "paths": [],     "types": [       "hammerjs",       "jasmine",       "node",       "protractor",       "selenium-webdriver",       "source-map",       "webpack"     ]   },   "exclude": [     "node_modules",     "dist"   ],   "awesomeTypescriptLoaderOptions": {     "forkChecker": true,     "useWebpackText": true   },   "compileOnSave": false,   "buildOnSave": false,   "atom": { "rewriteTsconfig": false },     "angularCompilerOptions": {     "genDir": "dist",     "entryModule": "src/app/app.module#AppModule"   } } 

Webpack.config.js:

switch (process.env.NODE_ENV) {   case 'prod':   case 'production':     module.exports = require('./config/webpack.prod')({env: 'production'});     break;   case 'test':   case 'testing':     module.exports = require('./config/webpack.test')({env: 'test'});     break;   case 'dev':   case 'development':   default:     module.exports = require('./config/webpack.dev')({env: 'development'}); } 

My /config/webpack.prod.js:

const webpack = require('webpack'); const helpers = require('./helpers'); const webpackMerge = require('webpack-merge'); // used to merge webpack configs     const commonConfig = require('./webpack.common.js').config; // the settings that are common to prod and dev const hashName = require('./random-hash.js')(); // the settings that are common to prod and dev      /**      * Webpack Plugins      */     const ProvidePlugin = require('webpack/lib/ProvidePlugin'); const DefinePlugin = require('webpack/lib/DefinePlugin'); const NormalModuleReplacementPlugin = require('webpack/lib/NormalModuleReplacementPlugin'); const IgnorePlugin = require('webpack/lib/IgnorePlugin'); const DedupePlugin = require('webpack/lib/optimize/DedupePlugin'); const UglifyJsPlugin = require('webpack/lib/optimize/UglifyJsPlugin');  /**  * Webpack Constants  */ const ENV = process.env.NODE_ENV = process.env.ENV = 'production'; const HOST = process.env.HOST || 'localhost'; const PORT = process.env.PORT || 8080; const METADATA = webpackMerge(require('./webpack.common.js').metadata, {     host: HOST,     port: PORT,     ENV: ENV });  module.exports = function (env) {     return webpackMerge(commonConfig({ env: ENV }), {          devtool: 'hidden-source-map',          output:{             path: helpers.root('dist'),             filename: '[name].bundle.js?ver='+ hashName,             sourceMapFilename: '../maps/' + '[name].map?ver='+ hashName,             chunkFilename: '[id].chunk.js?ver='+ hashName         },           plugins: [             // NOTE: when adding more properties make sure you include them in custom-typings.d.ts             new DefinePlugin({                 'ENV': JSON.stringify(METADATA.ENV),                 'process.env': {                     'ENV': JSON.stringify(METADATA.ENV),                     'NODE_ENV': JSON.stringify(METADATA.ENV)                 }             }),             new webpack.LoaderOptionsPlugin({                 optons: {                     debug: false,                     htmlLoader: {                         minimize: true,                         removeAttributeQuotes: false,                         caseSensitive: true,                         customAttrSurround: [                             [/#/, /(?:)/],                             [/\*/, /(?:)/],                             [/\[?\(?/, /(?:)/]                             ],                             customAttrAssign: [/\)?\]?=/]                     },                     tslint: {                         emitErrors: true,                         failOnHint: true,                         resourcePath: 'src'                     },                     postLoaders: [                         {                             test: /\.js$/,                             loader: 'string-replace-loader',                             query: {                                 search: 'var sourceMappingUrl = extractSourceMappingUrl\\(cssText\\);',                                     replace: 'var sourceMappingUrl = "";',                                         flags: 'g'                             }                         }                     ],                     preLoaders: [                     {                         test: /\.ts$/,                         loader: 'string-replace-loader',                         query: {                             search: '(System|SystemJS)(.*[\\n\\r]\\s*\\.|\\.)import\\((.+)\\)',                             replace: '$1.import($3).then(mod => (mod.__esModule && mod.default) ? mod.default : mod)',                             flags: 'g'                         },                         include: [helpers.root('src')]                     },                     {                         test: /\.ts$/,                         loader: 'tslint-loader',                         options: {                             configFile: 'tslint.json'                         },                         exclude: [/\.(spec|e2e)\.ts$/]                     }                  ]                 }             })         ],          node: {             global: true,             crypto: 'empty',             process: false,             module: false,             clearImmediate: false,             setImmediate: false         }      }); }; 

And config/webpack.common.js:

const webpack = require('webpack'); const helpers = require('./helpers');  /*  * Webpack Plugins  */ // problem with copy-webpack-plugin const CopyWebpackPlugin = require('copy-webpack-plugin'); const HtmlWebpackPlugin = require('html-webpack-plugin'); const ForkCheckerPlugin = require('awesome-typescript-loader').ForkCheckerPlugin; const HtmlElementsPlugin = require('./html-elements-plugin'); const AssetsPlugin = require('assets-webpack-plugin'); const ContextReplacementPlugin = require('webpack/lib/ContextReplacementPlugin'); const AotPlugin = require('@ngtools/webpack').AotPlugin;  /*  * Webpack Constants  */ /*  * Static metadata for index.html  *  * See: (custom attribute)  */ const METADATA = {     title: '',     baseUrl: '/',     isDevServer: helpers.isWebpackDevServer() };  /*  * Webpack configuration  *  * See: http://webpack.github.io/docs/configuration.html#cli  */ module.exports = {     metadata: METADATA,     config: function(options) {         isProd = options.env === 'production';         return {              /*              * Cache generated modules and chunks to improve performance for multiple incremental builds.              * This is enabled by default in watch mode.              * You can pass false to disable it.              *              * See: http://webpack.github.io/docs/configuration.html#cache              */             //cache: false,              /*              * The entry point for the bundle              * Our Angular.js app              *              * See: http://webpack.github.io/docs/configuration.html#entry              */             entry: {                  'polyfills': './src/polyfills.browser.ts',                 'vendor':    './src/vendor.browser.ts',                 'main':      './src/main.browser.ts'              },             // output: {             //   // Make sure to use [name] or [id] in output.filename             //   //  when using multiple entry points             //   //    filename: "[name].bundle.js",             //   //  chunkFilename: "[id].bundle.js"             //   publicPath: "https://d3ohoc4mai6ihm.cloudfront.net"             // },              /*              * Options affecting the resolving of modules.              *              * See: http://webpack.github.io/docs/configuration.html#resolve              */             resolve: {                  /*                  * An array of extensions that should be used to resolve modules.                  *                  * See: http://webpack.github.io/docs/configuration.html#resolve-extensions                  */                 extensions: ['.ts', '.js', '.json'],                  // An array of directory names to be resolved to the current directory                 modules: [helpers.root('src'), 'node_modules'],              },              /*              * Options affecting the normal modules.              *              * See: http://webpack.github.io/docs/configuration.html#module              */             module: {                  /*                  * An array of automatically applied loaders.                  *                  * IMPORTANT: The loaders here are resolved relative to the resource which they are applied to.                  * This means they are not resolved relative to the configuration file.                  *                  * See: http://webpack.github.io/docs/configuration.html#module-loaders                  */                 loaders: [                      /* Ahead of time plugin */                     {                         test: /\.ts$/,                         loader: '@ngtools/webpack',                     },                      /*                      * Json loader support for *.json files.                      *                      * See: https://github.com/webpack/json-loader                      */                     {                         test: /\.json$/,                         loader: 'json-loader'                     },                      /*                      * to string and css loader support for *.css files                      * Returns file content as string                      *                      */                     {                         test: /\.css$/,                         loaders: ['to-string-loader', 'css-loader']                     },                      /* Raw loader support for *.html                      * Returns file content as string                      *                      * See: https://github.com/webpack/raw-loader                      */                     {                         test: /\.html$/,                         loader: 'raw-loader',                         exclude: [helpers.root('src/index.html')]                     },                      /* File loader for supporting images, for example, in CSS files.                      */                     {                         test: /\.(jpg|png|gif)$/,                         loader: 'url-loader?limit=100000000000'                     },                      // Support for SCSS as raw text                     {                         test: /\.scss$/,                         loaders: ['raw-loader', 'sass-loader']                     },                      //{ test: /\.scss$/, loaders: ['style', 'css', 'postcss', 'sass'] },                      {test: /\.(woff2?|ttf|eot|svg)$/, loader: 'url-loader?limit=100000000000'}                  ],               },              /*              * Add additional plugins to the compiler.              *              * See: http://webpack.github.io/docs/configuration.html#plugins              */             plugins: [                 new AssetsPlugin({                     path: helpers.root('dist'),                     filename: 'webpack-assets.json',                     prettyPrint: true                 }),                  /*                  * Plugin: ForkCheckerPlugin                  * Description: Do type checking in a separate process, so webpack don't need to wait.                  *                  * See: https://github.com/s-panferov/awesome-typescript-loader#forkchecker-boolean-defaultfalse                  */                 new ForkCheckerPlugin(),                 /*                  * Plugin: CommonsChunkPlugin                  * Description: Shares common code between the pages.                  * It identifies common modules and put them into a commons chunk.                  *                  * See: https://webpack.github.io/docs/list-of-plugins.html#commonschunkplugin                  * See: https://github.com/webpack/docs/wiki/optimization#multi-page-app                  */                 new webpack.optimize.CommonsChunkPlugin({                     name: ['polyfills', 'vendor'].reverse()                 }),                  /**                  * Plugin: ContextReplacementPlugin                  * Description: Provides context to Angular's use of System.import                  *                  * See: https://webpack.github.io/docs/list-of-plugins.html#contextreplacementplugin                  * See: https://github.com/angular/angular/issues/11580                  */                 new ContextReplacementPlugin(                     // The (\\|\/) piece accounts for path separators in *nix and Windows                     /angular(\\|\/)core(\\|\/)(esm(\\|\/)src|src)(\\|\/)linker/,                     helpers.root('src') // location of your src                 ),                 new ContextReplacementPlugin(                     // The (\\|\/) piece accounts for path separators in *nix and Windows                     /moment[\/\\]locale$/, /en-gb/                 ),                  /*                  * Plugin: CopyWebpackPlugin                  * Description: Copy files and directories in webpack.                  *                  * Copies project static assets.                  *                  * See: https://www.npmjs.com/package/copy-webpack-plugin                  */                 new CopyWebpackPlugin([{                     from: 'src/assets',                     to: 'assets'                 }]),                  /*                  * Plugin: HtmlWebpackPlugin                  * Description: Simplifies creation of HTML files to serve your webpack bundles.                  * This is especially useful for webpack bundles that include a hash in the filename                  * which changes every compilation.                  *                  * See: https://github.com/ampedandwired/html-webpack-plugin                  */                 new HtmlWebpackPlugin({                     template: 'src/index.html',                     chunksSortMode: 'dependency'                 }),                  /*                  * Plugin: HtmlHeadConfigPlugin                  * Description: Generate html tags based on javascript maps.                  *                  * If a publicPath is set in the webpack output configuration, it will be automatically added to                  * href attributes, you can disable that by adding a "=href": false property.                  * You can also enable it to other attribute by settings "=attName": true.                  *                  * The configuration supplied is map between a location (key) and an element definition object (value)                  * The location (key) is then exported to the template under then htmlElements property in webpack configuration.                  *                  * Example:                  *  Adding this plugin configuration                  *  new HtmlElementsPlugin({                      *    headTags: { ... }                      *  })                  *                  *  Means we can use it in the template like this:                  *  <%= webpackConfig.htmlElements.headTags %>                  *                  * Dependencies: HtmlWebpackPlugin                  */                 new HtmlElementsPlugin({                     headTags: require('./head-config.common')                 }),                  /* Ahead of time compilation plugin */                 new AotPlugin({                     tsConfigPath: 'tsconfig.json',                     entryModule: helpers.root('src', 'app', 'app.module.ts#AppModule')                 })             ],              /*              * Include polyfills or mocks for various node stuff              * Description: Node configuration              *              * See: https://webpack.github.io/docs/configuration.html#node              */             node: {                 global: 'window',                 crypto: 'empty',                 process: true,                 module: false,                 clearImmediate: false,                 setImmediate: false             }          };     } } 

Complete error trace:

Uncaught Error: No NgModule metadata found for 'AppModule'.     at NgModuleResolver.resolve (vendor.bundle.js?ver=d1084b5…:18969) [<root>]     at CompileMetadataResolver.getNgModuleMetadata (vendor.bundle.js?ver=d1084b5…:18172) [<root>]     at JitCompiler._loadModules (vendor.bundle.js?ver=d1084b5…:50582) [<root>]     at JitCompiler._compileModuleAndComponents (vendor.bundle.js?ver=d1084b5…:50542) [<root>]     at JitCompiler.compileModuleAsync (vendor.bundle.js?ver=d1084b5…:50508) [<root>]     at PlatformRef_._bootstrapModuleWithZone (vendor.bundle.js?ver=d1084b5…:39236) [<root>]     at PlatformRef_.bootstrapModule (vendor.bundle.js?ver=d1084b5…:39211) [<root>]     at Object.<anonymous> (main.bundle.js?ver=d1084b5…:34315) [<root>]     at __webpack_require__ (polyfills.bundle.js?ver=d1084b5…:53) [<root>]     at webpackJsonpCallback (polyfills.bundle.js?ver=d1084b5…:24) [<root>]     at :8080/main.bundle.js?ver=d1084b5dbd73943cc778978401608960:1:1 [<root>] 

I don't really know what's going on. I really appreciate your time and you help.

回答1:

I don't really know if it helps, but I had similar problem. I'm guessing you are using some kind of boilerplate because you have this helpers.root function.

First of all try to change this part:

new AotPlugin({     tsConfigPath: 'tsconfig.json',     entryModule: helpers.root('src/app/app.module.ts#AppModule') }) 

to this (adding helpers.root part to tsconfig.json file):

new AotPlugin({     tsConfigPath: helpers.root('tsconfig.json'),     entryModule: helpers.root('src/app/app.module.ts#AppModule') }) 

Second of all double check your tsconfig.json to be configured to AoT compilation. This is my tsconfig-aot.json which I',m using in one of my Angular 2 projects:

{   "compilerOptions": {     "target": "es5",     "module": "commonjs",     "moduleResolution": "node",     "sourceMap": true,     "emitDecoratorMetadata": true,     "experimentalDecorators": true,     "lib": ["es2015", "dom"],     "noImplicitAny": false,     "sourceRoot": ".",     "suppressImplicitAnyIndexErrors": true,     "typeRoots": [       "node_modules/@types"     ]   },    "awesomeTypescriptLoaderOptions": {     "useWebpackText": true,     "forkChecker": true,     "useCache": true   },    "angularCompilerOptions": {     "genDir": "aot",     "skipMetadataEmit" : true   } } 

Hope this will help!



回答2:

Try rolling back to ngtools/webpack version 1.2.4 there are issues with the path resolution in later versions related to this issue 5329.



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