rollup.config.mjs

import typescript from '@rollup/plugin-typescript';
import commonjs from '@rollup/plugin-commonjs';
import { nodeResolve } from '@rollup/plugin-node-resolve';
import replace from '@rollup/plugin-replace';

export default [
  {
    input: 'src/index.ts',
    output: {
      file: 'dist/index.js',
      format: 'esm',
      sourcemap: true,
    },
    plugins: [
      typescript(),
      commonjs(),
      nodeResolve({ preferBuiltins: true }),
    ],
    external: ['fs', 'path', 'ignore'],
  },
  {
    input: 'src/cli.ts',
    output: {
      file: 'dist/cli.js',
      format: 'cjs',
      sourcemap: true,
      banner: '#!/usr/bin/env node',
    },
    plugins: [
      typescript(),
      commonjs(),
      nodeResolve({ preferBuiltins: true }),
      replace({
        preventAssignment: true,
        'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
      }),
    ],
    external: ['fs', 'path', 'yargs', 'ignore'],
  },
];