Question

我是React的新手，我使用webpack作为模块捆绑器和npm构建了一个客户端反应应用程序。它在Webpack devServer的开发中运行顺畅。在制作中，我使用express作为服务器。在localhost：8080运行时，它显示正常，但我收到这些警告。我设置了NODE_ENV ='production'，但仍然是相同的警告。

这是我的生产配置文件

production.config.js

const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const webpack = require('webpack')
const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require("extract-text-webpack-plugin");



const config ={
devtool: 'cheap-module-source-map',


  entry: [
    'react-hot-loader/patch',
    './client/main.js'
  ],

  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'app.bundle.js',
    publicPath:'/'

  },


  module: {
    rules: [
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              //query: { sourceMap: false },
              options: {
                importLoaders: 1,
              }
            },
            {
              loader: 'postcss-loader'
            }
          ]

        })
      },
      {
        test: /\.jsx?$/,
        use: 'babel-loader',
        exclude: /node_modules/
      },

      {
        test: /\.(png|jpe?g|gif|svg|ico|\.woff$|\.ttf$|\.wav$|\.mp3$)$/i,
        use: ['file-loader?name=img/[name].[ext]',
          'image-webpack-loader']

      },
      {
        test: /\.(eot|svg|ttf|woff|woff2)$/,
        loader: 'file-loader?name=fonts/[name].[ext]'

      }
    ]
  },

  plugins: [  
    //index.html custom template
    new HtmlWebpackPlugin({
      title: 'Index',
      template: './index.html'

    }),
     new webpack.EnvironmentPlugin(
      { 
        'process.env': 
      { 
        NODE_ENV: JSON.stringify('production') } 
    }
    ),

    //extract css files
    new ExtractTextPlugin({filename:"styles.css",disable:false,allChunks:true}),
    new UglifyJsPlugin({
      sourceMap: false,
      mangle: true,
      beautify:false,
      compress: {
        warnings: false, // Suppress uglification warnings
        pure_getters: true,
        unsafe: true,
        unsafe_comps: true,
        screw_ie8: true
      },
      output: {
        comments: false
      }  
  })


  ]
};

module.exports=config

的package.json

{
  "name": "react-app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "webpack": "webpack",
    "dev": "webpack-dev-server --colors",
    "prod": "npm run build && node deploy.js",
    "build": "webpack --config production.config.js --progress --colors"
       }

//依赖项被省略 }

Answer 1

尝试使用此软件包：https://www.npmjs.com/package/cross-env

我认为在Windows命令提示中设置NODE_ENV = production会出现问题。

用法示例：

构建脚本：

cross-env NODE_ENV=production webpack

webpack.config.js：

const webpack = require('webpack');

const env = process.env.NODE_ENV || 'production';

//...

plugins = [
  new webpack.DefinePlugin({ 
    'process.env': {
      NODE_ENV: JSON.stringify(env)
    }
  })
]

//...

希望有所帮助。

React App忽略生产模式

1 个答案: