在使用延迟加载进行 Angular 5 迁移后，我遇到了一个问题。在我的 webpack.config 中，我使用了 angular-router-loader，但是当我在 JIT 模式下运行并且惰性模块从不加载时，控制台中没有错误。
当我使用 ngTools 运行应用程序进行 AOT 编译时，它可以工作，我可以看到生成的夹头。
我已经尝试了许多解决方案，但是没有生成夹头，当我导航到延迟加载路线时，控制台中没有错误，它只是不会加载。
// app.module
@NgModule({
imports: [
BrowserModule,
MainPageModule,
RouterModule.forRoot(appRoutes, {
useHash: true,
// preloadingStrategy: PreloadAllModules
})
]
});
// app.routing
import { Routes } from '@angular/router';
import { MainPageComponent } from './main_page/main.page.component';
export const appRoutes: Routes = [
{ path: '', component: MainPageComponent },
{ path: 'dashboard', loadChildren: './_dashboard/dashboard.module#DashboardModule' },
{ path: 'lazyload', loadChildren: './lazyload/lazy.module#LazyModule' }
];
/**
* webpack.config
*/
const path = require('path');
const webpack = require('webpack');
const { AngularCompilerPlugin } = require('@ngtools/webpack');
// Webpack Plugins
const CommonsChunkPlugin = require('webpack/lib/optimize/CommonsChunkPlugin');
const autoprefixer = require('autoprefixer');
const cssnano = require('cssnano');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const FaviconsWebpackPlugin = require('favicons-webpack-plugin');
const DashboardPlugin = require('webpack-dashboard/plugin');
const CheckerPlugin = require('awesome-typescript-loader').CheckerPlugin;
// const CompressionPlugin = require("compression-webpack-plugin");
const UglifyJsPlugin = require('webpack/lib/optimize/UglifyJsPlugin');
//Configurations
const optimizationConfig = require('./opt.config.json');
const tsLintConfig = require('./tslint.json');
/**
* Env
* Get npm lifecycle event to identify the environment
*/
const ENV = process.env.npm_lifecycle_event;
const isTestWatch = ENV === 'test-watch';
const isTest = ENV === 'test' || isTestWatch;
const isProd = ENV === 'build';
const isAOTWatch = ENV.includes('aot');
console.log('======== Running in mode: ' + (isAOTWatch || isProd ? 'AOT' : 'JIT'));
module.exports = function makeWebpackConfig() {
/**
* Config
* Reference: http://webpack.github.io/docs/configuration.html
* This is the object where all configuration gets set
*/
let config = {};
/**
* Devtool
* Reference: http://webpack.github.io/docs/configuration.html#devtool
* Type of sourcemap to use per build type
*/
if (isProd) {
config.devtool = 'source-map';
}
else if (isTest) {
config.devtool = 'inline-source-map';
}
else {
config.devtool = 'eval-source-map';
}
/**
* Entry
* Reference: http://webpack.github.io/docs/configuration.html#entry
*/
if (!isTest) {
/**
* Entry
* Reference: http://webpack.github.io/docs/configuration.html#entry
*/
config.entry = isTest ? {} : {
'app': './src/config/main.ts', // Our angular app
'polyfills': './src/config/polyfills.ts',
'vendor': './src/config/vendor.ts'
};
}
/**
* Output
* Reference: http://webpack.github.io/docs/configuration.html#output
*/
config.output = isTest ? {} : {
path: root('__build__'),
publicPath: isProd ? '/' : 'http://localhost:9000/',
filename: isProd ? 'js/[name].[hash].js' : 'js/[name].js',
sourceMapFilename: isProd ? 'js/[name].[hash].js.map' : 'js/[name].js.map',
chunkFilename: isProd ? '[id].[hash].chunk.js' : '[id].chunk.js'
};
/**
* Resolve
* Reference: http://webpack.github.io/docs/configuration.html#resolve
*/
config.resolve = {
// Only discover files that have those extensions
extensions: ['.ts', '.js', '.json', '.css', '.scss', '.html']
};
let atlOptions = '';
if (isTest && !isTestWatch) {
// awesome-typescript-loader needs to output inlineSourceMap for code coverage to work with source maps.
atlOptions = 'inlineSourceMap=true&sourceMap=false';
}
/**
* Loaders
* Reference: http://webpack.github.io/docs/configuration.html#module-loaders
* List: http://webpack.github.io/docs/list-of-loaders.html
* This handles most of the magic responsible for converting modules
*/
config.module = {
rules: [
{
test: /(?:\.ngfactory\.js|\.ngstyle\.js|\.ts)$/,
loaders: isProd || isAOTWatch ? ['@ngtools/webpack'] : [
'@angularclass/hmr-loader',
'awesome-typescript-loader?inlineSourceMap=true&sourceMap=false',
'angular2-template-loader',
'angular-router-loader'
]
},
// Support for *.json files.
{
test: /\.json$/,
loader: 'json-loader'
},
// Load fonts
{
test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
loader: "url-loader?mimetype=application/font-woff&name=./font/[hash].[ext]"
},
{
test: /\.(ttf|eot|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
loader: "file-loader?name=./fonts/[hash].[ext]"
},
// Load images
{
test: /\.(jpe?g|png|gif|ico)$/,
loader: "file-loader?name=./image/[hash].[ext]"
},
// SASS or SCSS loaded in src/app/_common
{
test: /\.css$/,
include: [root('src', 'app', '_common', 'plugins'), root('src', 'app', '_common', 'styles')],
loader: isTest ? 'null-loader' : ExtractTextPlugin.extract({ fallback: 'style-loader', use: ['css-loader'] })
},
// SASS or SCSS loaded in all components
{
test: /\.(scss|sass)$/,
exclude: [root('src', 'app', '_common', 'plugins'), root('src', 'app', '_common', 'styles')],
loader: 'raw-loader!postcss-loader!sass-loader'
},
// Support for .html as raw text
{
test: /\.html$/,
loader: 'raw-loader',
exclude: root('src', 'config')
}
]
};
if (isTest && !isTestWatch) {
// instrument only testing sources with Istanbul, covers ts files
config.module.rules.push({
test: /\.ts$/,
enforce: 'post',
include: path.resolve('src'),
loader: 'istanbul-instrumenter-loader',
exclude: [/\.spec\.ts$/, /\.e2e\.ts$/, /node_modules/]
});
}
if (!isTest || !isTestWatch) {
// tslint support
config.module.rules.push({
test: /\.ts$/,
enforce: 'pre',
loader: 'tslint-loader'
});
}
/**
* Plugins
* Reference: http://webpack.github.io/docs/configuration.html#plugins
* List: http://webpack.github.io/docs/list-of-plugins.html
*/
config.plugins = [
// Define env letiables to help with builds
// Reference: https://webpack.github.io/docs/list-of-plugins.html#defineplugin
new webpack.DefinePlugin({
// Environment helpers
'process.env': {
ENV: JSON.stringify(ENV)
}
}),
// Workaround needed for angular 2 angular/angular#11580
/* new webpack.ContextReplacementPlugin(
// The (\\|\/) piece accounts for path separators in *nix and Windows
/angular(\\|\/)core(\\|\/)(esm(\\|\/)src|src)(\\|\/)linker/,
root('./src') // location of your src
),*/
// Tslint configuration for webpack 2
new webpack.LoaderOptionsPlugin({
options: {
/**
* Apply the tslint loader as pre/postLoader
* Reference: https://github.com/wbuchwalter/tslint-loader
*/
tslint: tsLintConfig,
/**
* Sass
* Reference: https://github.com/jtangelder/sass-loader
* Transforms .scss files to .css
*/
sassLoader: {},
/**
* PostCSS
* Reference: https://github.com/postcss/autoprefixer-core
* Add vendor prefixes to your css
*/
postcss: [
autoprefixer(optimizationConfig.autoprefixer),
cssnano(optimizationConfig.cssnano)
]
}
})
];
if (isProd || isAOTWatch) {
config.plugins.push(
new AngularCompilerPlugin({
tsConfigPath: './tsconfig.json',
entryModule: root('src/app/app.module#AppModule')
})
);
} else {
config.plugins.push(
new webpack.ContextReplacementPlugin(
/angular(\\|\/)core/,
path.resolve('./src')
)
);
}
if (!isTest && !isProd) {
config.plugins.push(new DashboardPlugin());
}
if (!isTest && !isTestWatch) {
config.plugins.push(
new CheckerPlugin(),
// Generate common chunks if necessary
// Reference: https://webpack.github.io/docs/code-splitting.html
// Reference: https://webpack.github.io/docs/list-of-plugins.html#commonschunkplugin
new CommonsChunkPlugin({
name: ['vendor', 'polyfills']
}),
// Inject script and link tags into html files
// Reference: https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
template: './src/config/index.html',
chunksSortMode: 'dependency'
}),
// Extract css files
// Reference: https://github.com/webpack/extract-text-webpack-plugin
// Disabled when in test mode or not in build mode
new ExtractTextPlugin({
filename: 'css/[name].[hash].css',
disable: !isProd
}),
// Support favicons generation
// Reference: https://github.com/jantimon/favicons-webpack-plugin
new FaviconsWebpackPlugin({
logo: './src/config/favicon.png',
title: 'Glow Portal',
prefix: 'favicon/',
icons: {
android: false,
appleIcon: false,
appleStartup: false,
coast: false,
favicons: true,
firefox: false,
opengraph: false,
twitter: false,
yandex: false,
windows: false
}
}),
// Module (value) is loaded when the identifier (key) is used as free letiable in a module.
// Reference: https://webpack.github.io/docs/list-of-plugins.html#provideplugin
new webpack.ProvidePlugin({
jQuery: 'jquery',
$: 'jquery',
jquery: 'jquery',
moment: 'moment',
svgPanZoom: 'svg-pan-zoom'
})
);
}
// Add build specific plugins
if (isProd) {
config.plugins.push(
// Reference: http://webpack.github.io/docs/list-of-plugins.html#noerrorsplugin
// Only emit files when there are no errors
new webpack.NoEmitOnErrorsPlugin(),
// Reference: http://webpack.github.io/docs/list-of-plugins.html#uglifyjsplugin
// Minify all javascript, switch loaders to minimizing mode
new UglifyJsPlugin(optimizationConfig.uglifyjs)
// Reference: https://recordnotfound.com/compression-webpack-plugin-webpack-76201
// Prepare compressed versions of assets to serve them with Content-Encoding
/*new CompressionPlugin({
asset: "[path].gz[query]",
algorithm: "gzip",
test: /\.js$|\.css$|\.html$/,
threshold: 10240
})*/
);
}
/**
* Dev server configuration
* Reference: http://webpack.github.io/docs/configuration.html#devserver
* Reference: http://webpack.github.io/docs/webpack-dev-server.html
*/
config.devServer = {
contentBase: './__build__',
historyApiFallback: true,
stats: 'minimal',
watchOptions: {
aggregateTimeout: 300,
poll: 1000
}
};
return config;
}();
// Helper functions
function root(args) {
args = Array.prototype.slice.call(arguments, 0);
return path.join.apply(path, [__dirname].concat(args));
}