Question

我使用webpack2来构建我的应用程序，但是当使用uglify-js + uglifyjs-webpack-plugin时。我遇到了一些问题：

ERROR in vendors.js from UglifyJs
TypeError: Cannot read property 'reset' of undefined
at F:\Github\Program\My-test\Webpack\www2\node_modules\_uglifyjs-webpack-plugin@0.4.3@uglifyjs-webpack-plugin\dist\index.js:99:22
at F:\Github\Program\My-test\Webpack\www2\node_modules\_uglifyjs-webpack-plugin@0.4.3@uglifyjs-webpack-plugin\dist\index.js:231:9
at Array.forEach (native)
at Compilation.<anonymous> (F:\Github\Program\My-test\Webpack\www2\node_modules\_uglifyjs-webpack-plugin@0.4.3@uglifyjs-webpack-plugin\dist\index.js:54:19)
at Compilation.applyPluginsAsyncSeries (F:\Github\Program\My-test\Webpack\www2\node_modules\_tapable@0.2.6@tapable\lib\Tapable.js:142:13)
at self.applyPluginsAsync.err (F:\Github\Program\My-test\Webpack\www2\node_modules\_webpack@2.5.1@webpack\lib\Compilation.js:635:10)
at Compilation.applyPluginsAsyncSeries (F:\Github\Program\My-test\Webpack\www2\node_modules\_tapable@0.2.6@tapable\lib\Tapable.js:131:46)
at sealPart2 (F:\Github\Program\My-test\Webpack\www2\node_modules\_webpack@2.5.1@webpack\lib\Compilation.js:631:9)
at Compilation.applyPluginsAsyncSeries (F:\Github\Program\My-test\Webpack\www2\node_modules\_tapable@0.2.6@tapable\lib\Tapable.js:131:46)
at Compilation.seal (F:\Github\Program\My-test\Webpack\www2\node_modules\_webpack@2.5.1@webpack\lib\Compilation.js:579:8)
at F:\Github\Program\My-test\Webpack\www2\node_modules\_webpack@2.5.1@webpack\lib\Compiler.js:493:16
at F:\Github\Program\My-test\Webpack\www2\node_modules\_tapable@0.2.6@tapable\lib\Tapable.js:225:11
at _addModuleChain (F:\Github\Program\My-test\Webpack\www2\node_modules\_webpack@2.5.1@webpack\lib\Compilation.js:481:11)
at processModuleDependencies.err (F:\Github\Program\My-test\Webpack\www2\node_modules\_webpack@2.5.1@webpack\lib\Compilation.js:452:13)
at _combinedTickCallback (internal/process/next_tick.js:73:7)
at process._tickCallback (internal/process/next_tick.js:104:9)

webpack配置可能会给你一些帮助：

module.exports = {
    entry: {
        app: path.resolve(APP, 'index.js'),
        vendors: ['jquery', 'moment']
    },
    output: {
        path: BUILD,
        filename: 'bundle.js'
    },
    plugins: [
        new HTMLwebpackPlugin({
            title: 'Generate by webpack'
        }),
        new webpack.optimize.CommonsChunkPlugin({
            name: 'vendors',
            filename: 'vendors.js'
        }),
        new UglifyJSPlugin({
            compress: true
        })
    ],
    module: {
        loaders: [
            {
                test: /\.scss$/,
                loaders: 'style-loader!css-loader?sourceMap!sass-loader?sourceMap',
                include: APP 
            },
            {
                test: /\.(jpg|png)$/,
                loaders: 'url-loader?limit=40000'
            },
            {
                test: /\.jsx?$/, 
                loader: 'babel-loader',
                include: APP,
                query: {
                    presets: ['es2015', {"modules": false}]
                }
            }
        ]
    },
    devtool: 'eval-source-map'
}

什么是'重置'是什么意思？我无法在任何地方找到答案...... 谢谢！

Answer 1

编辑八月2017： 现在uglifyjs-webpack-plugin works with uglify-js@3

安装插件：npm install uglifyjs-webpack-plugin --save-dev，然后安装在webpack config中：

var UglifyJSPlugin = require('uglifyjs-webpack-plugin')
...
plugins: [
    new UglifyJSPlugin()
]

Answer 2

适合我：

  npm install uglifyjs-webpack-plugin --save-dev

 plugins: [
    new webpack.optimize.UglifyJsPlugin()
]

但这不起作用：

  new UglifyJSPlugin({
        compress: true
    })

同样的问题是在Github，答案是：

目前使用UglifyJS 3打破了插件。它有一个新的API，因此插件必须相应地更改。

Answer 3

我只是这样才解决它：

npm install --save-dev uglify-js@2

你必须确保你使用的是uglify 2而不是3 我的配置如下所示：

const webpack = require('webpack');

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

Answer 4

使用webpack3 + angular4只需使用 npm install uglify-js@2.8.27 --save-dev

Answer 5

<强> 2017年7月26日

我通过以下方式解决了这个问题：

npm i -D uglifyjs-webpack-plugin@1.0.0-beta.2

原因：uglifyjs-webpack-plugin@0.4.x，即webpack使用的版本，不支持uglify-js 3.自uglifyjs-webpack-plugin@1.0.0-beta以来，它开始支持uglify-js 3.

参考：

Uglify，无法读取undefined的属性'reset'

5 个答案: