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