rollup.config.mjs

import camelCase from 'lodash.camelcase';
import commonjs from '@rollup/plugin-commonjs';
import resolve from '@rollup/plugin-node-resolve';
import sourceMaps from 'rollup-plugin-sourcemaps';

import pkg from './package.json' with { type: 'json' };

const libraryName = 'simplify-path';

export default {
  input: `compiled/${libraryName}.class.js`,
  output: [
    { file: pkg.main, name: camelCase(libraryName), format: 'umd', exports: 'named' },
    { file: pkg.module, name: camelCase(libraryName), format: 'es', exports: 'named' },
  ],
  // Indicate here external modules you don't wanna include in your bundle (i.e.: 'lodash')
  external: [],
  plugins: [
    // Allow bundling cjs modules (unlike webpack, rollup doesn't understand cjs)
    commonjs(),
    // Allow node_modules resolution, so you can use 'external' to control
    // which external modules to include in the bundle
    // https://github.com/rollup/rollup-plugin-node-resolve#usage
    resolve(),

    // Resolve source maps to the original source
    sourceMaps(),
  ],
};