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           sourcemap: true,
  45           plugins: [terser({ maxWorkers })]
  46         })
  47       },
  48       {
  49         format: 'esm',
  50         ...(isDevelopmentBuild && {
  51           dir: './lib',
  52           sourcemap: true,
  53           entryFileNames: '[name].mjs',
  54           chunkFileNames: '[name]-[hash].mjs',
  55           preserveModules: true,
  56           preserveModulesRoot: './src'
  57         }),
  58         ...(!isDevelopmentBuild && {
  59           file: './lib/index.mjs',
  60           sourcemap: true,
  61           plugins: [terser({ maxWorkers })]
  62         })
  63       }
  64     ],
  65     external: [
  66       'node:async_hooks',
  67       'node:cluster',
  68       'node:crypto',
  69       'node:events',
  70       'node:fs',
  71       'node:os',
  72       'node:perf_hooks',
  73       'node:worker_threads'
  74     ],
  75     plugins: [
  76       typescript({
  77         tsconfig: './tsconfig.build.json'
  78       }),
  79       del({
  80         targets: ['./lib/*']
  81       }),
  82       isAnalyzeBuild && analyze(),
  83       isDocumentationBuild && command('pnpm typedoc')
  84     ]
  85   },
  86   {
  87     input: './lib/dts/index.d.ts',
  88     output: [{ format: 'esm', file: './lib/index.d.ts' }],
  89     external: [
  90       'node:async_hooks',
  91       'node:cluster',
  92       'node:events',
  93       'node:perf_hooks',
  94       'node:worker_threads'
  95     ],
  96     plugins: [
  97       dts(),
  98       del({
  99         targets: ['./lib/dts'],
 100         hook: 'buildEnd'
 101       }),
 102       isAnalyzeBuild && analyze()
 103     ]
 104   }
 105 ])