rollup.config.js

import { swc } from 'rollup-plugin-swc3';
import { nodeResolve } from '@rollup/plugin-node-resolve';
import pkg from './package.json' assert { type: 'json' };

const extensions = ['.js', '.ts', '.tsx'];
const external = _ => /node_modules/.test(_) && !/@swc\/helpers/.test(_);
const plugins = targets => [
  nodeResolve({
    extensions,
  }),
  swc({
    tsconfig: false,
    jsc: {
      parser: {
        syntax: 'typescript',
        tsx: true,
      },
      transform: {
        react: {
          useBuiltins: true,
        },
      },
      externalHelpers: true,
    },
    env: {
      targets,
    },
    module: {
      type: 'es6',
    },
    sourceMaps: true,
  }),
];

export default {
  input: pkg.exports,
  plugins: plugins('defaults and supports es6-module'),
  external,
  output: [
    {
      file: pkg.publishConfig.exports.import,
      format: 'es',
      sourcemap: true,
    },
    {
      file: pkg.publishConfig.exports.require,
      format: 'cjs',
      sourcemap: true,
    },
  ],
};