Question

This plugin uses UglifyJS v3 (uglify-es) to minify your JavaScript

ℹ️ webpack =< v3.0.0 currently contains v0.4.6 of this plugin under webpack.optimize.UglifyJsPlugin as an alias. For usage of the latest version (v1.0.0), please follow the instructions below. Aliasing v1.0.0 as webpack.optimize.UglifyJsPlugin is scheduled for webpack v4.0.0

安装

npm i -D uglifyjs-webpack-plugin

用法

webpack.config.js

const UglifyJsPlugin = require('uglifyjs-webpack-plugin')

module.exports = {
  plugins: [
    new UglifyJsPlugin()
  ]
}

选项

属性名称	类型	默认值	描述
test	`{RegExp\	Array}`	/.js($|\?)/i	测试匹配的文件
include	`{RegExp\	Array}`	undefined	包含的文件
exclude	`{RegExp\	Array}`	undefined	排除的文件。
cache	`{Boolean\	String}`	false	启用文件缓存
parallel	`{Boolean\	Object}`	false	使用多进程并行运行和文件缓存来提高构建速度
sourceMap	{Boolean}	false	使用 source map 将错误信息的位置映射到模块（这会减慢编译的速度） ⚠️ cheap-source-map 选项不适用于此插件
uglifyOptions	{Object}	{...defaults}	uglify 选项
extractComments	`{Boolean\	RegExp\	Function<(node, comment) -> {Boolean\	Object}>}`	false	是否将注释提取到单独的文件，（查看= 2.3.0`" target="_blank">详细
warningsFilter	{Function(source) -> {Boolean}}	() => true	允许过滤 uglify 警告

webpack.config.js

[
  new UglifyJsPlugin({
    test: /\.js($|\?)/i
  })
]

include

webpack.config.js

[
  new UglifyJsPlugin({
    include: /\/includes/
  })
]

exclude

webpack.config.js

[
  new UglifyJsPlugin({
    exclude: /\/excludes/
  })
]

cache

{Boolean}

webpack.config.js

[
  new UglifyJsPlugin({
    cache: true
  })
]

Enable file caching. Default path to cache directory: node_modules/.cache/uglifyjs-webpack-plugin.

{String}

webpack.config.js

[
  new UglifyJsPlugin({
    cache: 'path/to/cache'
  })
]

Path to cache directory.

parallel

{Boolean}

webpack.config.js

[
  new UglifyJsPlugin({
    parallel: true
  })
]

Enable parallelization. Default number of concurrent runs: os.cpus().length - 1.

{Number}

webpack.config.js

[
  new UglifyJsPlugin({
    parallel: 4
  })
]

Number of concurrent runs.

ℹ️ Parallelization can speedup your build significantly and is therefore highly recommended

sourceMap

webpack.config.js

[
  new UglifyJsPlugin({
    sourceMap: true
  })
]

⚠️ cheap-source-map options don't work with this plugin

uglifyOptions

Name	Type	Default	Description
ie8	{Boolean}	false	Enable IE8 Support
ecma	{Number}	undefined	Supported ECMAScript Version (5, 6, 7 or 8). Affects parse, compress && output options
parse	{Object}	{}	Additional Parse Options
mangle	`{Boolean\	Object}`	true	Enable Name Mangling (See Mangle Properties for advanced setups, use with ⚠️)
output	{Object}	{}	Additional Output Options (The defaults are optimized for best compression)
compress	`{Boolean\	Object}`	true	Additional Compress Options
warnings	{Boolean}	false	Display Warnings

webpack.config.js

[
  new UglifyJsPlugin({
    uglifyOptions: {
      ie8: false,
      ecma: 8,
      parse: {...options},
      mangle: {
        ...options,
        properties: {
          // mangle property options
        }
      },
      output: {
        comments: false,
        beautify: false,
        ...options
      },
      compress: {...options},
      warnings: false
    }
  })
]

extractComments

{Boolean}

All comments that normally would be preserved by the comments option will be moved to a separate file. If the original file is named foo.js, then the comments will be stored to foo.js.LICENSE.

{RegExp|String} or {Function<(node, comment) -> {Boolean}>}

All comments that match the given expression (resp. are evaluated to true by the function) will be extracted to the separate file. The comments option specifies whether the comment will be preserved, i.e. it is possible to preserve some comments (e.g. annotations) while extracting others or even preserving comments that have been extracted.

{Object}

Name	Type	Default	Description
condition	`{Regex\	Function}`	``	通常表达式或者相应函数（见上文）
filename	`{String\	Function}`	${file}.LICENSE	提取注释的文件会被存储。可以使一个 {String} 字符串或者是一个 {Function<(string) -> {String}>} 返回字符串的函数，作为原文件名。默认加上文件后缀名 .LICENSE
banner	`{Boolean\	String\	Function}`	/*! For license information please see ${filename}.js.LICENSE */	banner 文本会在原文件的头部指出被提取的文件，会在源文件加入该信息。可以是 false（表示没有 banner），一个 {String}，或者一个 {Function<(string) -> {String} 返回字符串的函数，会在提取已经被存储注释的时候被调用。注释会被覆盖。

warningsFilter

webpack.config.js

[
  new UglifyJsPlugin({
    warningsFilter: (src) => true
  })
]