rollup.config.mjs

   1 import * as os from 'node:os'
   2 import { env } from 'node:process'
   3 import { dts } from 'rollup-plugin-dts'
   4 import terser from '@rollup/plugin-terser'
   5 import typescript from '@rollup/plugin-typescript'
   6 import analyze from 'rollup-plugin-analyzer'
   7 import command from 'rollup-plugin-command'
   8 import del from 'rollup-plugin-delete'
   9 import { defineConfig } from 'rollup'
  10
  11 const availableParallelism = () => {
  12   let availableParallelism = 1
  13   try {
  14     availableParallelism = os.availableParallelism()
  15   } catch {
  16     const cpus = os.cpus()
  17     if (Array.isArray(cpus) && cpus.length > 0) {
  18       availableParallelism = cpus.length
  19     }
  20   }
  21   return availableParallelism
  22 }
  23
  24 const isDevelopmentBuild = env.BUILD === 'development'
  25 const isAnalyzeBuild = env.ANALYZE
  26 const isDocumentationBuild = env.DOCUMENTATION
  27
  28 const maxWorkers = Math.floor(availableParallelism() / 2)
  29
  30 export default defineConfig([
  31   {
  32     input: './src/index.ts',
  33     strictDeprecations: true,
  34     output: [
  35       {
  36         format: 'cjs',
  37         ...(isDevelopmentBuild && {
  38           dir: './lib',
  39           sourcemap: true,
  40           preserveModules: true,
  41           preserveModulesRoot: './src'
  42         }),
  43         ...(!isDevelopmentBuild && {
  44           file: './lib/index.js',
  45           sourcemap: true,
  46           plugins: [terser({ maxWorkers })]
  47         })
  48       },
  49       {
  50         format: 'esm',
  51         ...(isDevelopmentBuild && {
  52           dir: './lib',
  53           sourcemap: true,
  54           entryFileNames: '[name].mjs',
  55           chunkFileNames: '[name]-[hash].mjs',
  56           preserveModules: true,
  57           preserveModulesRoot: './src'
  58         }),
  59         ...(!isDevelopmentBuild && {
  60           file: './lib/index.mjs',
  61           sourcemap: true,
  62           plugins: [terser({ maxWorkers })]
  63         })
  64       }
  65     ],
  66     external: [
  67       'node:async_hooks',
  68       'node:cluster',
  69       'node:crypto',
  70       'node:events',
  71       'node:fs',
  72       'node:os',
  73       'node:perf_hooks',
  74       'node:worker_threads'
  75     ],
  76     plugins: [
  77       typescript({
  78         tsconfig: './tsconfig.build.json'
  79       }),
  80       del({
  81         targets: ['./lib/*']
  82       }),
  83       isAnalyzeBuild && analyze(),
  84       isDocumentationBuild && command('pnpm typedoc')
  85     ]
  86   },
  87   {
  88     input: './lib/dts/index.d.ts',
  89     output: [{ format: 'esm', file: './lib/index.d.ts' }],
  90     external: [
  91       'node:async_hooks',
  92       'node:cluster',
  93       'node:events',
  94       'node:perf_hooks',
  95       'node:worker_threads'
  96     ],
  97     plugins: [
  98       dts(),
  99       del({
 100         targets: ['./lib/dts'],
 101         hook: 'buildEnd'
 102       }),
 103       isAnalyzeBuild && analyze()
 104     ]
 105   }
 106 ])