dbgate/packages/api/rollup.config.js

import commonjs from '@rollup/plugin-commonjs';
import resolve from '@rollup/plugin-node-resolve';
import json from '@rollup/plugin-json';

export default {
  input: 'src/index.js',
  output: {
    file: 'bundle.js',
    format: 'cjs',
  },
  plugins: [
    resolve(),
    commonjs(),
    json()
  ]  
};