Question

强文本 Webpack的配置如下：

webpack.config.js 如下：

const path = require('path');
const webpack = require('webpack');
const CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
    context: path.resolve(__dirname, './src'),
    entry: {
        app: './app.js',
    },
    plugins: [
        new CopyWebpackPlugin([
            {from: '../public'},
            {from: '../src/fonts', to: 'fonts'},
            {from: '../src/images'}
        ]),
        new webpack.EnvironmentPlugin(['REACT_APP_OMNITURE_URL']),
        new webpack.DefinePlugin({
            'process.env.NODE_ENV': JSON.stringify('production')
        }),
        new webpack.optimize.UglifyJsPlugin()
    ],
    output: {
        path: path.resolve(__dirname, './build'),
        filename: '[name].bundle.js',
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: [/node_modules/],
                use: [{
                    loader: 'babel-loader',
                    options: {presets: ["es2015", "react"]},
                }],
            },
            {
                test: /\.svg$/,
                exclude: [/node_modules/],
                use: [{loader: 'svg-react-loader'}],
            },
            {
                test: /\.scss$/,
                use: [{
                    loader: "style-loader"
                }, {
                    loader: "css-loader"
                }, {
                    loader: "sass-loader"
                }]
            },
            {
                test: /\.(png|woff|woff2|eot|otf|ttf)$/,
                loader: 'url-loader?limit=100000'
            }
        ],
    },
    devServer: {
        contentBase: path.resolve(__dirname, './public'),
        disableHostCheck: true,
        historyApiFallback: true
    },
};

我需要实现的是如下读取index.html中的REACT_APP_OMNITURE_URL环境变量：

<script type="text/javascript" src="//%REACT_APP_OMNITURE_URL%/analytics.js"></script>

这方面有帮助吗？

此外，我们正在使用Bamboo来根据环境变量动态地传递给我们。我们如何将这些变量分配给节点变量并在插件中使用？

Answer 1

您可以使用interpolate-html-plugin

yarn add interpolate-html-plugin --dev

webpack.config.js

plugins: [
    new InterpolateHtmlPlugin({
      'REACT_APP_OMNITURE_URL': process.env.REACT_APP_OMNITURE_URL
    })
]

然后在html文件中使用它。

index.html

<script type="text/javascript" src="//%REACT_APP_OMNITURE_URL%/analytics.js"></script>

更多信息可以在这里找到：https://www.npmjs.com/package/interpolate-html-plugin

Answer 2

您尝试过html-webpack-plugin吗？这对我添加脚本路径很有用。从文档中：

webpack.config.js

const HtmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
  entry: 'index.js',
  output: {
    path: __dirname + '/dist',
    filename: 'index_bundle.js'
  },
  plugins: [
    new HtmlWebpackPlugin()
  ]
}
This will generate a file dist/index.html containing the following

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Webpack App</title>
  </head>
  <body>
    <script src="index_bundle.js"></script>
  </body>
</html>

如何使用Webpack读取index.html中的系统环境变量

2 个答案: