rollup.config.js

import typescript from '@rollup/plugin-typescript';
import dts from 'rollup-plugin-dts';
import babel from '@rollup/plugin-babel';
import terser from '@rollup/plugin-terser';
import nodeResolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import eslint from '@rollup/plugin-eslint';

const config = [
  {
    input: 'src/main.ts',
    output: [
      {
        dir: 'build/',
        format: 'esm',
        preserveModules: true,
      },
    ],
    plugins: [
      eslint({
        throwOnError: true,
      }),
      typescript({
        tsconfig: './tsconfig.json',
      }),
      nodeResolve(),
      commonjs(),
      terser(),
      babel({
        babelHelpers: 'bundled',
        extensions: ['.js', '.ts'],
      }),
    ],
  },
  {
    input: 'src/main.ts',
    output: [{ dir: 'build/type', format: 'es', preserveModules: true }],
    plugins: [dts()],
  },
];
export default config;