rollup.config.mjs

import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import typescript from '@rollup/plugin-typescript';
import { babel } from '@rollup/plugin-babel';
import terser from '@rollup/plugin-terser';
import peerDepsExternal from 'rollup-plugin-peer-deps-external';
import dts from 'rollup-plugin-dts';

import { readFileSync } from 'fs';
const pkg = JSON.parse(readFileSync(new URL('./package.json', import.meta.url), 'utf8'));

export default [
  // ESM and CJS bundles
  {
    input: 'src/index.ts',
    output: [
      {
        file: pkg.main,
        format: 'cjs',
        sourcemap: true,
        exports: 'named',
      },
      {
        file: pkg.module,
        format: 'esm',
        sourcemap: true,
        exports: 'named',
      },
    ],
    plugins: [
      peerDepsExternal(),
      resolve(),
      commonjs(),
      typescript({ tsconfig: './tsconfig.json' }),
      babel({
        babelHelpers: 'bundled',
        exclude: 'node_modules/**',
        presets: [
          '@babel/preset-env',
          '@babel/preset-react',
          '@babel/preset-typescript',
        ],
      }),
      terser(),
    ],
    external: ['react'],
  },
  // Type definitions
  {
    input: 'src/index.ts',
    output: [{ file: 'dist/index.d.ts', format: 'es' }],
    plugins: [dts()],
  },
];