webpack.config.base.js

module.exports = {
    entry: {
        app: "/src/main.js",
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/, //匹配js文件
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ["@babel/preset-react", "@babel/preset-env"],
                        plugins: [
                            [
                                "@babel/plugin-proposal-decorators",
                                { legacy: true },
                            ],
                            [
                                "@babel/plugin-proposal-class-properties",
                                { loose: true },
                            ],
                            [
                                "@babel/plugin-proposal-private-methods",
                                { loose: true },
                            ],
                            [
                                "@babel/plugin-proposal-private-property-in-object",
                                { loose: true },
                            ],
                        ],
                    },
                },
            },
        ],
    },
};