babel.config.js

module.exports = {
    presets: [
        [
            '@babel/preset-env',
            {
                modules: 'false',
            },
        ],
    ],
    env: {
        cjs: {
            presets: [
                [
                    '@babel/env',
                    {
                        targets: {
                            node: 8,
                        },
                    },
                ],
            ]
        },
        test: {
            presets: [
                [
                    '@babel/env',
                    {
                        targets: {
                            node: 'current',
                        }
                    }
                ]
            ]
        }
    },
}