.babelrc.js

module.exports = {
  presets: [
    [
      `@babel/preset-env`,
      {
        useBuiltIns: `usage`,
        modules: `commonjs`,
        corejs: 3,
        targets: {
          node: `8`,
        },
        debug: !!process.env.DEBUG,
        exclude: [`es.promise`],
      },
    ],
  ],
  plugins: [],
}