webpack - 使源 map 正常工作

Question

我真的在努力使源 map 正常工作。当我运行我的应用程序时，我在控制台中看到一个错误-参见下文:


当我单击fineUploaderTest-bundle.js:1链接时，我什么也看不到代码-参见下文:


在该窗口的底部，请注意它显示为:

source mapped from fineUploaderTest-bundle.js

我的Webpack版本是2.7.0，这是 webpack.config.js文件:

var IS_DEV = false;

var webpack = require('webpack');
var path = require("path");

// Define plugins needed for production and dev cases
var _pluginsDev = [
    new webpack.ProvidePlugin({
        'fetch': 'imports-loader?this=>global!exports-loader?global.fetch!whatwg-fetch',
        moment: 'moment',
        ps: 'perfect-scrollbar'
    }),

];
var _pluginsProd = [
    new webpack.ProvidePlugin({
        'fetch': 'imports-loader?this=>global!exports-loader?global.fetch!whatwg-fetch',
        moment: 'moment',
        ps: 'perfect-scrollbar'
    }),
    new webpack.DefinePlugin({ // Minimizer, removing multiple occurances of imports et.c
        'process.env': {
            'NODE_ENV': JSON.stringify('production')
        }
    }),
    new webpack.optimize.UglifyJsPlugin({
        minimize: true,
        compress: true,
        sourceMap: true,
        output: { comments: false }
    })
];

var _devtool = IS_DEV ? 'eval' : 'inline-cheap-module-source-map';
var _plugins = IS_DEV ? _pluginsDev : _pluginsProd;
var _fileName = IS_DEV ? "./build/[name]-bundle.js" : "./dist/[name]-bundle.js";

var _bundles = {
    login: './UI/components/login/login.jsx',
    fineUploaderTest: './UI/components/test.jsx'
};

module.exports = {
    entry: _bundles,
    output: {
        path: path.resolve(__dirname, "wwwroot"),
        publicPath: "/",
        filename: _fileName
    },
    devtool: _devtool,
    plugins: _plugins,
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ['es2015', 'stage-2', 'stage-0', 'react']
                    }
                }
            }
        ]
    },
    resolve: {
        extensions: ['.js', '.jsx']
    }
}

我在这里做错了什么？

Answer 1

您如何运行webpack？我假设在生产模式下您还使用了-p标志？

在生产模式下，Webpack不会输出inline-cheap-module-source-map类型的源映射(引用:https://webpack.js.org/configuration/devtool/)。

为了在生产模式下获得一些输出，我还建议将inline-cheap-module-source-map切换为source-map。