也许你在找这个

module.exports = {
      optimization: {
        minimizer: [
          new TerserPlugin({
            exclude: /node_modules/,
          }),
        ],
      },
    };

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在Webpack5的生产环境中也遇到了同样的问题，最终出现了类似以下的问题，这将排除node_modules或dist下的特定文件，这将导致Terser的“积极”缩小尝试被破坏。

optimization: {
    minimize: NODE_ENV !== 'development', //only minimize on production
    //JS minimizer when "minimize === true",
    minimizer: [
        new TerserPlugin({
            test: /\.js$/,
            exclude: /(?:node_modules|dist)\/(update-notifier|numeral|jackspeak|bulma-extensions)\//, //whatever causes u a problem, either as RegExp or as a string[]
            terserOptions: {
                parse: {
                    bare_returns: true //allow code with returns outside of functions, solved a ton of issues.
                },
            },
        })],
    // rest of config.
    // ...
}

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老实说，我不确定排除/node_modules下的所有文件是否是一个好主意。