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 const sourcemap = env.SOURCEMAP !== 'false'
  28
  29 const maxWorkers = Math.floor(availableParallelism() / 2)
  30
  31 export default defineConfig([
  32   {
  33     input: './src/index.ts',
  34     strictDeprecations: true,
  35     output: [
  36       {
  37         format: 'cjs',
  38         ...(isDevelopmentBuild && {
  39           dir: './lib',
  40           entryFileNames: '[name].cjs',
  41           chunkFileNames: '[name]-[hash].cjs',
  42           preserveModules: true,
  43           preserveModulesRoot: './src'
  44         }),
  45         ...(!isDevelopmentBuild && {
  46           file: './lib/index.cjs',
  47           plugins: [terser({ maxWorkers })]
  48         }),
  49         ...(sourcemap && {
  50           sourcemap
  51         })
  52       },
  53       {
  54         format: 'esm',
  55         ...(isDevelopmentBuild && {
  56           dir: './lib',
  57           entryFileNames: '[name].mjs',
  58           chunkFileNames: '[name]-[hash].mjs',
  59           preserveModules: true,
  60           preserveModulesRoot: './src'
  61         }),
  62         ...(!isDevelopmentBuild && {
  63           file: './lib/index.mjs',
  64           plugins: [terser({ maxWorkers })]
  65         }),
  66         ...(sourcemap && {
  67           sourcemap
  68         })
  69       }
  70     ],
  71     external: [/^node:*/],
  72     plugins: [
  73       typescript({
  74         tsconfig: './tsconfig.build.json',
  75         compilerOptions: {
  76           sourceMap: sourcemap
  77         }
  78       }),
  79       del({
  80         targets: ['./lib/*']
  81       }),
  82       Boolean(isAnalyzeBuild) && analyze(),
  83       Boolean(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: [/^node:*/],
  90     plugins: [
  91       dts(),
  92       del({
  93         targets: ['./lib/dts'],
  94         hook: 'buildEnd'
  95       }),
  96       Boolean(isAnalyzeBuild) && analyze()
  97     ]
  98   }
  99 ])