我使用Webpack打包我的Angular 2项目，但当我打包主文件时，文件太大了，大小约为8M。每次刷新页面时，浏览器需要很长时间来加载和执行JavaScript文件。我认为可能有很多我不需要的文件，但我如何找到它并从我的打包文件中删除它？谢谢给我一些建议或帮助。
这是我的Webpack配置的主要部分： webpack.common.js：
这是我的Webpack配置的主要部分： webpack.common.js：
const webpack = require('webpack');
const helpers = require('./helpers');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ForkCheckerPlugin = require('awesome-typescript-loader').ForkCheckerPlugin;
module.exports = {
baseUrl: './',
entry: {
// 'polyfills': './src/polyfills.ts',
// 'vendor': './src/vendor.ts',
'main': './src/main.ts'
},
resolve: {
extensions: ['', '.ts', '.js', '.json'],
root: helpers.root('src'),
modulesDirectories: ['node_modules'],
},
module: {
loaders: [
{
test: /\.ts$/,
loaders: ['awesome-typescript-loader', 'angular2-template-loader'],
exclude: [/\.(spec|e2e)\.ts$/]
},
{
test: /\.json$/,
loader: 'json-loader'
},
{
test: /\.css$/,
loaders: ['raw-loader']
},
{
test: /\.html$/,
loader: 'raw-loader',
exclude: [helpers.root('src/index.html')]
},
{
test: /\.scss$/,
loaders: ['raw-loader', 'sass-loader'] // sass-loader not scss-loader
},
{
test: /\.(jpg|png|gif)$/,
loader: 'file'
},
{
test: /.(png|woff(2)?|eot|ttf|svg)$/,
loader: 'url-loader'
}
]
},
plugins: [
new ForkCheckerPlugin(),
// new CopyWebpackPlugin([
// {from: 'src/assets', to: 'assets'},
// {from: 'src/app/i18n', to: 'app/i18n'},
// {from: 'src/loading.css', to: 'loading.css'},
// {from: 'src/fonts', to: 'fonts'},
// {from: 'src/favicon.ico', to: ''},
// {from: 'src/img', to: 'img'}]),
new HtmlWebpackPlugin({
template: 'src/index.html',
chunksSortMode: 'dependency'
})
],
node: {
global: 'window',
crypto: 'empty',
process: true,
module: false,
clearImmediate: false,
setImmediate: false
}
};
webpack.prod.js
const helpers = require('./helpers');
const webpackMerge = require('webpack-merge'); // used to merge webpack configs
const commonConfig = require('./webpack.common.js'); // the settings that are common to prod and dev
/**
* Webpack Plugins
*/
const webpack = require('webpack');
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');
const ForkCheckerPlugin = require('awesome-typescript-loader').ForkCheckerPlugin;
const ENV = process.env.NODE_ENV = process.env.ENV = 'production';
const HOST = process.env.HOST || 'localhost';
module.exports = webpackMerge(commonConfig, {
devtool: 'source-map',
output: {
path: helpers.root('dist'),
filename: '[name].bundle.js',
chunkFilename: '[id].chunk.js'
},
plugins: [
// new webpack.NoErrorsPlugin(), // 如果出现任何错误 就终止构建
// new DedupePlugin(), // 检测完全相同(以及几乎完全相同)的文件 并把它们从输出中移除
// new webpack.optimize.CommonsChunkPlugin({
// name: ['polyfills', 'vendor', 'main'].reverse()
// }),
new UglifyJsPlugin({
beautify: false,
mangle: { screw_ie8 : true, keep_fnames: true },
compress: { screw_ie8: true, warnings: false },
comments: false
}),
// new ExtractTextPlugin('[name].[hash].css'), // 把内嵌的 css 抽取成玩不文件 并为其文件名添加 hash 后缀 使得浏览端缓存失效
new DefinePlugin({ // 定义环境变量
'process.env': {
ENV: JSON.stringify(ENV)
}
}),
],
htmlLoader: {
minimize: true,
removeAttributeQuotes: false,
caseSensitive: true,
customAttrSurround: [
[/#/, /(?:)/],
[/\*/, /(?:)/],
[/\[?\(?/, /(?:)/]
],
customAttrAssign: [/\)?\]?=/]
},
tslint: {
emitErrors: true,
failOnHint: true,
resourcePath: 'src'
},
node: {
global: 'window',
crypto: 'empty',
process: false,
module: false,
clearImmediate: false,
setImmediate: false
}
});
我删除了 vendor.ts 文件，这是我的 polyfills.ts 文件。
// This file includes polyfills needed by Angular 2 and is loaded before
// the app. You can add your own extra polyfills to this file.
// Added parts of es6 which are necessary for your project or your browser support requirements.
import 'core-js/es6/symbol';
import 'core-js/es6/object';
import 'core-js/es6/function';
import 'core-js/es6/parse-int';
import 'core-js/es6/parse-float';
import 'core-js/es6/number';
import 'core-js/es6/math';
import 'core-js/es6/string';
import 'core-js/es6/date';
import 'core-js/es6/array';
import 'core-js/es6/regexp';
import 'core-js/es6/map';
import 'core-js/es6/set';
import 'core-js/es6/reflect';
import 'core-js/es6/weak-map';
import 'core-js/es6/weak-set';
import 'core-js/es7/reflect';
import 'zone.js/dist/zone';