前端笔记 ---- TerserWebpackPlugin 配置

Rattenking

6669人浏览 · 2023-05-18 09:28:15

Rattenking · 2023-05-18 09:28:15 发布

1. 参考文档

TerserWebpackPlugin 参考文档

2. 安装

npm install terser-webpack-plugin --save-dev

3. webpack 配置实例

webpack.config.js

const TerserPlugin = require("terser-webpack-plugin");

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [new TerserPlugin()],
  },
};

4. 选项说明

选项名	类型	默认值	描述
test	String\|RegExp\|Array<String\|RegExp>	/.m?js(?.*)?$/i	用来匹配需要压缩的文件。
include	String\|RegExp\|Array<String\|RegExp>	undefined	匹配参与压缩的文件。
exclude	String\|RegExp\|Array<String\|RegExp>	undefined	匹配不需要压缩的文件。
parallel	Boolean\|Number	true	使用多进程并发运行以提高构建速度。
minify	Function	TerserPlugin.terserMinify	允许你自定义压缩函数。
terserOptions	Object	default	Terser 的 minify 选项。
extractComments	Boolean\|String\|RegExp\|Function<(node, comment) -> Boolean\|Object>\|Object	true	注释是否需要提取到一个单独的文件中。

5. 参数使用实例

5.1 test

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        test: /\.js(\?.*)?$/i,
      }),
    ],
  },
};

5.2 include

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        include: /\/includes/,
      }),
    ],
  },
};

5.3 exclude

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        exclude: /\/excludes/,
      }),
    ],
  },
};

5.4 parallel

5.4.1 Boolean

启用/禁用多进程并发运行功能。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        parallel: true,
      }),
    ],
  },
};

5.4.2 Number

启用多进程并发运行并设置并发运行次数。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        parallel: 4,
      }),
    ],
  },
};

5.5 minify

启用 parallel 选项时，在 minify 函数内部只能使用 require 。

// Can be async
const minify = (input, sourceMap, minimizerOptions, extractsComments) => {
  // The `minimizerOptions` option contains option from the `terserOptions` option
  // You can use `minimizerOptions.myCustomOption`

  // Custom logic for extract comments
  const { map, code } = require("uglify-module") // Or require('./path/to/uglify-module')
    .minify(input, {
      /* Your options for minification */
    });

  return { map, code, warnings: [], errors: [], extractedComments: [] };
};

// Used to regenerate `fullhash`/`chunkhash` between different implementation
// Example: you fix a bug in custom minimizer/custom function, but unfortunately webpack doesn't know about it, so you will get the same fullhash/chunkhash
// to avoid this you can provide version of your custom minimizer
// You don't need if you use only `contenthash`
minify.getMinimizerVersion = () => {
  let packageJson;

  try {
    // eslint-disable-next-line global-require, import/no-extraneous-dependencies
    packageJson = require("uglify-module/package.json");
  } catch (error) {
    // Ignore
  }

  return packageJson && packageJson.version;
};

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          myCustomOption: true,
        },
        minify,
      }),
    ],
  },
};

5.6 terserOptions

Terser 配置项。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          ecma: undefined,
          parse: {},
          compress: {},
          mangle: true, // Note `mangle.properties` is `false` by default.
          module: false,
          // Deprecated
          output: null,
          format: null,
          toplevel: false,
          nameCache: null,
          ie8: false,
          keep_classnames: undefined,
          keep_fnames: false,
          safari10: false,
        },
      }),
    ],
  },
};

5.7 extractComments

5.7.1 Boolean

启用/禁用剥离注释功能。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: true,
      }),
    ],
  },
};

5.7.2 String

剥离 all 或 some （使用 /^**!|@preserve|@license|@cc_on/i 正则表达式进行匹配）注释。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: "all",
      }),
    ],
  },
};

5.7.3 RegExp

与指定表达式匹配的所有注释将会被剥离到单独的文件中。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: /@extract/i,
      }),
    ],
  },
};

5.7.4 Function<(node, comment) -> Boolean>

与指定表达式匹配的所有注释将会被剥离到单独的文件中。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: (astNode, comment) => {
          if (/@extract/i.test(comment.value)) {
            return true;
          }

          return false;
        },
      }),
    ],
  },
};

5.7.5 Object

允许自定义剥离注释的条件，指定剥离的文件名和标题。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: {
          condition: /^\**!|@preserve|@license|@cc_on/i,
          filename: (fileData) => {
            // The "fileData" argument contains object with "filename", "basename", "query" and "hash"
            return `${fileData.filename}.LICENSE.txt${fileData.query}`;
          },
          banner: (licenseFile) => {
            return `License information can be found in ${licenseFile}`;
          },
        },
      }),
    ],
  },
};

5.7.6 condition

自定义需要剥离的注释。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: {
          condition: "some",
          filename: (fileData) => {
            // The "fileData" argument contains object with "filename", "basename", "query" and "hash"
            return `${fileData.filename}.LICENSE.txt${fileData.query}`;
          },
          banner: (licenseFile) => {
            return `License information can be found in ${licenseFile}`;
          },
        },
      }),
    ],
  },
};

5.7.7 filename

使用 js / cjs / mjs 扩展名可能会与现有资源文件冲突，从而导致代码运行出错。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: {
          condition: /^\**!|@preserve|@license|@cc_on/i,
          filename: "extracted-comments.js",
          banner: (licenseFile) => {
            return `License information can be found in ${licenseFile}`;
          },
        },
      }),
    ],
  },
};

5.7.8 banner

指向剥离文件的标语文本将被添加到原始文件的顶部。可以为 false （无标题）， String 或一个函数：Function<(string) -> String> ，该函数将被使用存储剥离的注释的文件名来调用。标语内容将被合并到注释中。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: {
          condition: true,
          filename: (fileData) => {
            // The "fileData" argument contains object with "filename", "basename", "query" and "hash"
            return `${fileData.filename}.LICENSE.txt${fileData.query}`;
          },
          banner: (commentsFile) => {
            return `My custom banner about license information ${commentsFile}`;
          },
        },
      }),
    ],
  },
};

6. 快捷配置

6.1 保留注释

剥离所有有效的注释（即 /^**!|@preserve|@license|@cc_on/i ）并保留 /@license/i 注释。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          format: {
            comments: /@license/i,
          },
        },
        extractComments: true,
      }),
    ],
  },
};

6.2 删除注释

如果要在构建时去除注释，请使用以下配置：

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          format: {
            comments: false,
          },
        },
        extractComments: false,
      }),
    ],
  },
};

6.3 uglify-js

UglifyJS 是一款集 JavaScript 解析器，压缩器，美化器于一身的工具集。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.uglifyJsMinify,
        // `terserOptions` options will be passed to `uglify-js`
        // Link to options - https://github.com/mishoo/UglifyJS#minify-options
        terserOptions: {},
      }),
    ],
  },
};

6.4 swc

swc 是一款采用 rust 编写的超快编译器；可以将最新标准和 TypeScript 的语法生成被广泛使用的 JavaScript。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.swcMinify,
        // `terserOptions` options will be passed to `swc` (`@swc/core`)
        // Link to options - https://swc.rs/docs/config-js-minify
        terserOptions: {},
      }),
    ],
  },
};

6.5 esbuild

esbuild 是一款非常快速的 JavaScript 打包工具和压缩工具。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.esbuildMinify,
        // `terserOptions` options will be passed to `esbuild`
        // Link to options - https://esbuild.github.io/api/#minify
        // Note: the `minify` options is true by default (and override other `minify*` options), so if you want to disable the `minifyIdentifiers` option (or other `minify*` options) please use:
        // terserOptions: {
        //   minify: false,
        //   minifyWhitespace: true,
        //   minifyIdentifiers: false,
        //   minifySyntax: true,
        // },
        terserOptions: {},
      }),
    ],
  },
};

6.6 自定义压缩函数

覆盖默认的 minify 函数 - 使用 uglify-js 进行压缩。

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        minify: (file, sourceMap) => {
          // https://github.com/mishoo/UglifyJS2#minify-options
          const uglifyJsOptions = {
            /* your `uglify-js` package options */
          };

          if (sourceMap) {
            uglifyJsOptions.sourceMap = {
              content: sourceMap,
            };
          }

          return require("uglify-js").minify(file, uglifyJsOptions);
        },
      }),
    ],
  },
};

6.7 Typescript

6.7.1 使用默认 terser 压缩函数

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          compress: true,
        },
      }),
    ],
  },
};

6.7.2 使用内置压缩函数

import type { JsMinifyOptions as SwcOptions } from "@swc/core";
import type { MinifyOptions as UglifyJSOptions } from "uglify-js";
import type { TransformOptions as EsbuildOptions } from "esbuild";
import type { MinifyOptions as TerserOptions } from "terser";

module.exports = {
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin<SwcOptions>({
        minify: TerserPlugin.swcMinify,
        terserOptions: {
          // `swc` options
        },
      }),
      new TerserPlugin<UglifyJSOptions>({
        minify: TerserPlugin.uglifyJsMinify,
        terserOptions: {
          // `uglif-js` options
        },
      }),
      new TerserPlugin<EsbuildOptions>({
        minify: TerserPlugin.esbuildMinify,
        terserOptions: {
          // `esbuild` options
        },
      }),

      // Alternative usage:
      new TerserPlugin<TerserOptions>({
        minify: TerserPlugin.terserMinify,
        terserOptions: {
          // `terser` options
        },
      }),
    ],
  },
};