rollup.config.js

import autoExternal from 'rollup-plugin-auto-external';
import babel from 'rollup-plugin-babel';
import resolve from 'rollup-plugin-node-resolve';
import replace from 'rollup-plugin-replace';
import json from 'rollup-plugin-json';

import pkg from './package.json';

const extensions = ['.ts', '.mjs', '.js', '.json', '.node'];

export default [
    {
        input: 'src/index.ts',
        output: [
            { file: pkg.main, format: 'cjs' },
            { file: pkg.module, format: 'es' },
        ],
        plugins: [
            resolve({
                mainFields: ['module', 'main', 'jsnext:main'],
                extensions,
            }),
            json({
                include: 'src/**',
                indent: '  ',
            }),
            babel({
                exclude: 'node_modules/**',
                extensions,
            }),
            autoExternal(),
            replace({
                'process.env.STRICTER_VERSION': JSON.stringify(pkg.version),
            }),
        ],
    },
];