import typescript from 'rollup-plugin-typescript2'
import resolve from '@rollup/plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import pkg from './package.json'

export default {
  input: 'src/index.ts',
  output: [
    {
      file: pkg.main,
      format: 'cjs',
      sourcemap: true,
    },
    {
      file: pkg.module,
      format: 'es',
      sourcemap: true,
    },
  ],

  external: [
    ...Object.keys(pkg.dependencies || {}),
    ...Object.keys(pkg.peerDependencies || {}),
    'fs',
  ],

  plugins: [
    typescript({
      typescript: require('typescript'),
    }),

    resolve({
      main: true,
      preferBuiltins: true,
    }),

    commonjs(),
  ],
}