babel.config.cjs

'use strict';

module.exports = {
  env: {
    commonjs: {
      presets: [
        [
          '@babel/preset-env',
          {
            modules: 'commonjs',
            forceAllTransforms: true,
          },
        ],
      ],
      plugins: [
        [
          '@babel/plugin-transform-modules-commonjs',
          {
            loose: true,
          },
        ],
      ],
    },
    es: {
      presets: [
        [
          '@babel/preset-env',
          {
            modules: false,
            forceAllTransforms: true,
          },
        ],
      ],
    },
    coverage: {
      presets: [
        [
          '@babel/preset-env',
          {
            modules: 'commonjs',
            forceAllTransforms: true,
          },
        ],
      ],
      plugins: [
        'istanbul',
        [
          '@babel/plugin-transform-modules-commonjs',
          {
            loose: true,
          },
        ],
      ],
    },
  },
};