Function getBabelOptions

rollup.config.js:5–9

({ useESModules })

import pkg from './package.json'

const getBabelOptions = ({ useESModules }) => ({
  exclude: 'node_modules/**',
  runtimeHelpers: true,
  plugins: [['@babel/plugin-transform-runtime', { useESModules }]],
})

const isExternal = id => !id.startsWith('.') && !id.startsWith('/')