时间戳

首页 > 解决方案 > 控制 Webpack 3 捆绑/分块（在 Ionic3 中）

webpack - 控制 Webpack 3 捆绑/分块（在 Ionic3 中）

问题描述

我在 node_modules 中有一堆东西，据我所知，vendor.js当我构建我的 Ionic3 项目时，它们最终都会出现。为简单起见，假设我在 node_modules 中有以下文件夹：abc、xyz、uvw 和 qrs。让我们进一步说 abc 和 xyz 是公共图书馆，但 uvw 和 qrs 是私人图书馆。因此，我不想最终得到一个vendor.js包含所有四个库的单一文件。相反，我想最终得到一个vendor.js包含 abc 和 xyz 的 a，以及一个private.js包含 uvw 和 qrs 的 a。

如何更改 Ionic3 项目中的配置文件以实现该结果？理想情况下，我只需要在配置中命名 uvw 和 qrs，并为 node_modules 中的“其他所有内容”生成 vendor.js 的默认行为。

更新 作为参考，Ionic 3.9.2 使用 Webpack 3.10.0，默认的 Ionic webpack 配置如下所示。我真的只关心执行我上面描述的行为的生产构建。

/*
 * The webpack config exports an object that has a valid webpack configuration
 * For each environment name. By default, there are two Ionic environments:
 * "dev" and "prod". As such, the webpack.config.js exports a dictionary object
 * with "keys" for "dev" and "prod", where the value is a valid webpack configuration
 * For details on configuring webpack, see their documentation here
 * https://webpack.js.org/configuration/
 */

var path = require('path');
var webpack = require('webpack');
var ionicWebpackFactory = require(process.env.IONIC_WEBPACK_FACTORY);

var ModuleConcatPlugin = require('webpack/lib/optimize/ModuleConcatenationPlugin');
var PurifyPlugin = require('@angular-devkit/build-optimizer').PurifyPlugin;

var optimizedProdLoaders = [
  {
    test: /\.json$/,
    loader: 'json-loader'
  },
  {
    test: /\.js$/,
    loader: [
      {
        loader: process.env.IONIC_CACHE_LOADER
      },

      {
        loader: '@angular-devkit/build-optimizer/webpack-loader',
        options: {
          sourceMap: true
        }
      },
    ]
  },
  {
    test: /\.ts$/,
    loader: [
      {
        loader: process.env.IONIC_CACHE_LOADER
      },

      {
        loader: '@angular-devkit/build-optimizer/webpack-loader',
        options: {
          sourceMap: true
        }
      },

      {
        loader: process.env.IONIC_WEBPACK_LOADER
      }
    ]
  }
];

function getProdLoaders() {
  if (process.env.IONIC_OPTIMIZE_JS === 'true') {
    return optimizedProdLoaders;
  }
  return devConfig.module.loaders;
}

var devConfig = {
  entry: process.env.IONIC_APP_ENTRY_POINT,
  output: {
    path: '{{BUILD}}',
    publicPath: 'build/',
    filename: '[name].js',
    devtoolModuleFilenameTemplate: ionicWebpackFactory.getSourceMapperFunction(),
  },
  devtool: process.env.IONIC_SOURCE_MAP_TYPE,

  resolve: {
    extensions: ['.ts', '.js', '.json'],
    modules: [path.resolve('node_modules')]
  },

  module: {
    loaders: [
      {
        test: /\.json$/,
        loader: 'json-loader'
      },
      {
        test: /\.ts$/,
        loader: process.env.IONIC_WEBPACK_LOADER
      }
    ]
  },

  plugins: [
    ionicWebpackFactory.getIonicEnvironmentPlugin(),
    ionicWebpackFactory.getCommonChunksPlugin()
  ],

  // Some libraries import Node modules but don't use them in the browser.
  // Tell Webpack to provide empty mocks for them so importing them works.
  node: {
    fs: 'empty',
    net: 'empty',
    tls: 'empty'
  }
};

var prodConfig = {
  entry: process.env.IONIC_APP_ENTRY_POINT,
  output: {
    path: '{{BUILD}}',
    publicPath: 'build/',
    filename: '[name].js',
    devtoolModuleFilenameTemplate: ionicWebpackFactory.getSourceMapperFunction(),
  },
  devtool: process.env.IONIC_SOURCE_MAP_TYPE,

  resolve: {
    extensions: ['.ts', '.js', '.json'],
    modules: [path.resolve('node_modules')]
  },

  module: {
    loaders: getProdLoaders()
  },

  plugins: [
    ionicWebpackFactory.getIonicEnvironmentPlugin(),
    ionicWebpackFactory.getCommonChunksPlugin(),
    new ModuleConcatPlugin(),
    new PurifyPlugin()
  ],

  // Some libraries import Node modules but don't use them in the browser.
  // Tell Webpack to provide empty mocks for them so importing them works.
  node: {
    fs: 'empty',
    net: 'empty',
    tls: 'empty'
  }
};


module.exports = {
  dev: devConfig,
  prod: prodConfig
}

标签： webpackionic3bundling-and-minificationchunking

解决方案

如果您使用的是 webpack v4，那么optimization.splitChunks.cacheGroups这就是您要找的。完整的文档在这里。

现在看起来 OP 想要手动选择哪个模块去哪个包。您可以这样做：

  1. 添加两个新的缓存组，比如说optimization.splitChunks.cacheGroups.vendor和.private
  2. 设置和字段filename_enforcetest
cacheGroups.vendor = {
  filename: 'vendor.js',
  enforce: true,
  test: (module) => {
    const vendorList = ['abc', 'xyz']
    return vendorList.includes(module.name)
  }
}

// Similar config for `cacheGroups.private`

推荐阅读