webpack - webpack 4 - 生产模式 - UglifyJs 错误 - 意外字符'@'

Question

使用 运行 webpack 4 时mode: production，出现以下错误：

ERROR in style.ba47861224d5cf44f61f.js from UglifyJs Unexpected character '@' [./app/scss/main/app.scss:1,0][style.ba47861224d5cf44f61f.js:1,0]

这是我的配置：

common.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const CleanWebpackPlugin = require("clean-webpack-plugin");

module.exports = {
    entry: {
        index: "./webpack.entry.js",
        style: "./app/scss/main/app.scss"
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ["@babel/preset-env"],
                        cacheDirectory: true
                    }
                }
            }
        ]
    },
    plugins: [
        new CleanWebpackPlugin(["dist"]),
        new HtmlWebpackPlugin({
            template: "./app/html/index.html"
        })
    ],
    output: {
        path: path.resolve(__dirname, "dist")
    }
};

webpack.dev.js

const ExtractTextPlugin = require("extract-text-webpack-plugin");
const webpack = require("webpack");
const merge = require("webpack-merge");
const common = require("./webpack.common.js");

const extractSass = new ExtractTextPlugin({
    filename: "[name].[chunkhash].js"
});

module.exports = merge(common, {
    devtool: "source-map",
    module: {
        rules: [
            {
                test: /\.scss$/,
                use: extractSass.extract({
                    use: [
                        {
                            loader: "css-loader",
                            options: {
                                sourceMap: true,
                                url: false
                            }
                        },
                        {
                            loader: "sass-loader",
                            options: {
                                sourceMap: true
                            }
                        }
                    ]
                })
            }
        ]
    },
    plugins: [extractSass, new webpack.HashedModuleIdsPlugin()],
    output: {
        filename: "[name].[chunkhash].js"
    },
    mode: "production"
});

我不明白为什么 UglifyJs 抱怨特殊字符“@”。这样的字符不应该被删除css-loader吗？

标签： webpackuglifyjscss-loader

Answer 1

我发现了问题！的filename选项ExtractTextPlugin有错误的扩展名js。它应该是css这样的：

const extractSass = new ExtractTextPlugin({
    filename: "[name].[chunkhash].css"
});