rollup.config.js

import rpi_jsy from 'rollup-plugin-jsy'
import rpi_dgnotify from 'rollup-plugin-dgnotify'
import rpi_resolve from '@rollup/plugin-node-resolve'
import rpi_terser from '@rollup/plugin-terser'
import rpi_virtual from '@rollup/plugin-virtual'
import pkg from './package.json' with {type: 'json'}

const _rpis_ = (tag, defines, ...args) => [
  rpi_virtual({
    'code/version.js': `export const version = '${pkg.version}${tag || ''}'`,
  }),
  rpi_jsy({defines}),
  rpi_resolve(),
  ...args,
  rpi_dgnotify()]

const _cfg_ = {
  external: id => /^\w*:/.test(id),
  plugins: _rpis_(null, {}) }

const cfg_core = { ..._cfg_,
  plugins: _rpis_(null, {}) }

const cfg_nodejs = { ..._cfg_,
  plugins: _rpis_('-node', {PLAT_NODEJS: true}) }

const cfg_deno = { ..._cfg_,
  plugins: _rpis_('-deno', {PLAT_DENO: true}) }

const cfg_web = { ..._cfg_,
  plugins: _rpis_('-web', {PLAT_WEB: true}) }

let is_watch = process.argv.includes('--watch')
const cfg_web_min = is_watch ? null : { ... cfg_web,
  plugins: _rpis_('-web', {PLAT_WEB: true}, rpi_terser()) }



export default [
  ... add_entrypoint('index'),
  ... add_entrypoint('v4'),
  ... add_entrypoint('v5'),
  ... add_entrypoint('full-v4'),
  ... add_entrypoint('full-v5'),
  ... add_entrypoint('basic-v4'),
  ... add_entrypoint('basic-v5'),
]


function * add_entrypoint(src_name, opt={}) {
  const input = `code/${src_name}.js`

  if (cfg_core)
    yield ({ ... cfg_core, input,
      output: { file: `esm/${src_name}.js`, format: 'es', sourcemap: true } })

  if (cfg_nodejs)
    yield ({ ... cfg_nodejs, input, output: [
      { file: `cjs/${src_name}.cjs`, format: 'cjs', exports:opt.exports || 'named', sourcemap: true },
      { file: `esm/node/${src_name}.js`, format: 'es', sourcemap: true },
      { file: `esm/node/${src_name}.mjs`, format: 'es', sourcemap: true },
    ]})

  if (cfg_deno)
    yield ({ ... cfg_deno, input,
      output: { file: `esm/deno/${src_name}.js`, format: 'es', sourcemap: true } })

  if (cfg_web)
    yield ({ ... cfg_web, input,
      output: { file: `esm/web/${src_name}.js`, format: 'es', sourcemap: true } })

  if (cfg_web_min)
    yield ({ ... cfg_web_min, input,
      output: { file: `esm/web/${src_name}.min.js`, format: 'es', sourcemap: false } })
}