rollup.config.js

import typescript from 'rollup-plugin-typescript2'
import pkg from './package.json' assert { type: 'json' };

export default {
    input: 'src/index.tsx',
    output: [
      {
        file: pkg.main,
        format: 'es',
        exports: 'named',
        sourcemap: true,
        strict: false
      }
    ],
    plugins: [
      typescript({ objectHashIgnoreUnknownHack: true }),
    ],
    external: ['react', 'react-dom'],
}