text: const env = require.resolve('babel-preset-env');
  const stage2 = require.resolve('babel-preset-stage-2');
  const externalHelpers = require.resolve('babel-plugin-external-helpers');
  
  module.exports = {
    es5: {
      presets: [
        [
          env,
          {
            targets: {
              browsers: ['last 2 versions', 'ie >= 10'],
            },
            modules: false,
          },
        ],
        stage2,
      ],
      plugins: [externalHelpers],
    },
    es6: {
      presets: [stage2],
      plugins: [externalHelpers],
    },
  };
  