rollup.config.mjs

   1 import * as os from 'node:os'
   2 import { dts } from 'rollup-plugin-dts'
   3 import terser from '@rollup/plugin-terser'
   4 import typescript from '@rollup/plugin-typescript'
   5 import analyze from 'rollup-plugin-analyzer'
   6 import command from 'rollup-plugin-command'
   7 import del from 'rollup-plugin-delete'
   8 import { defineConfig } from 'rollup'
   9
  10 const availableParallelism = () => {
  11   let availableParallelism = 1
  12   try {
  13     availableParallelism = os.availableParallelism()
  14   } catch {
  15     const cpus = os.cpus()
  16     if (Array.isArray(cpus) && cpus.length > 0) {
  17       availableParallelism = cpus.length
  18     }
  19   }
  20   return availableParallelism
  21 }
  22
  23 const isDevelopmentBuild = process.env.BUILD === 'development'
  24 const isAnalyzeBuild = process.env.ANALYZE
  25 const isDocumentationBuild = process.env.DOCUMENTATION
  26
  27 const maxWorkers = Math.floor(availableParallelism() / 2)
  28
  29 export default defineConfig([
  30   {
  31     input: './src/index.ts',
  32     strictDeprecations: true,
  33     output: [
  34       {
  35         format: 'cjs',
  36         ...(isDevelopmentBuild && {
  37           dir: './lib',
  38           sourcemap: true,
  39           preserveModules: true,
  40           preserveModulesRoot: './src'
  41         }),
  42         ...(!isDevelopmentBuild && {
  43           file: './lib/index.js',
  44           plugins: [terser({ maxWorkers })]
  45         })
  46       },
  47       {
  48         format: 'esm',
  49         ...(isDevelopmentBuild && {
  50           dir: './lib',
  51           sourcemap: true,
  52           entryFileNames: '[name].mjs',
  53           preserveModules: true,
  54           preserveModulesRoot: './src'
  55         }),
  56         ...(!isDevelopmentBuild && {
  57           file: './lib/index.mjs',
  58           plugins: [terser({ maxWorkers })]
  59         })
  60       }
  61     ],
  62     external: [
  63       'node:async_hooks',
  64       'node:cluster',
  65       'node:crypto',
  66       'node:events',
  67       'node:fs',
  68       'node:os',
  69       'node:perf_hooks',
  70       'node:worker_threads'
  71     ],
  72     plugins: [
  73       typescript({
  74         tsconfig: isDevelopmentBuild
  75           ? './tsconfig.development.json'
  76           : './tsconfig.production.json'
  77       }),
  78       del({
  79         targets: ['./lib/*']
  80       }),
  81       isAnalyzeBuild && analyze(),
  82       isDocumentationBuild && command('pnpm typedoc')
  83     ]
  84   },
  85   {
  86     input: './lib/dts/index.d.ts',
  87     output: [{ format: 'esm', file: './lib/index.d.ts' }],
  88     external: [
  89       'node:async_hooks',
  90       'node:cluster',
  91       'node:events',
  92       'node:perf_hooks',
  93       'node:worker_threads'
  94     ],
  95     plugins: [
  96       dts(),
  97       del({
  98         targets: ['./lib/dts'],
  99         hook: 'buildEnd'
 100       }),
 101       isAnalyzeBuild && analyze()
 102     ]
 103   }
 104 ])