// ...
const exclude = [isDev ? "index.js" : ""];
// ...
    entry: {
        test: './index.js',
    },
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: '[name].[fullhash:8].bundle.js',
    },
    plugins: [new WebpackObfuscatorPlugin(obfuscatorConfig, exclude)] // This probably won't exclude index.js
// ...