rollup.config.mjs

   1 import { cpus } from 'node:os'
   2 import terser from '@rollup/plugin-terser'
   3 import typescript from '@rollup/plugin-typescript'
   4 import analyze from 'rollup-plugin-analyzer'
   5 import command from 'rollup-plugin-command'
   6 import del from 'rollup-plugin-delete'
   7
   8 const isDevelopmentBuild = process.env.BUILD === 'development'
   9 const isAnalyzeBuild = process.env.ANALYZE
  10 const isDocumentationBuild = process.env.DOCUMENTATION
  11
  12 const maxWorkers = cpus().length / 2
  13
  14 export default {
  15   input: 'src/index.ts',
  16   strictDeprecations: true,
  17   output: [
  18     {
  19       format: 'cjs',
  20       sourcemap: !!isDevelopmentBuild,
  21       ...(isDevelopmentBuild && {
  22         dir: 'lib',
  23         preserveModules: true,
  24         preserveModulesRoot: 'src'
  25       }),
  26       ...(!isDevelopmentBuild && {
  27         file: 'lib/index.js',
  28         plugins: [terser({ maxWorkers })]
  29       })
  30     },
  31     {
  32       format: 'esm',
  33       sourcemap: !!isDevelopmentBuild,
  34       ...(isDevelopmentBuild && {
  35         dir: 'lib',
  36         entryFileNames: '[name].mjs',
  37         preserveModules: true,
  38         preserveModulesRoot: 'src'
  39       }),
  40       ...(!isDevelopmentBuild && {
  41         file: 'lib/index.mjs',
  42         plugins: [terser({ maxWorkers })]
  43       })
  44     }
  45   ],
  46   external: [
  47     'node:async_hooks',
  48     'node:cluster',
  49     'node:crypto',
  50     'node:events',
  51     'node:os',
  52     'node:perf_hooks',
  53     'node:worker_threads'
  54   ],
  55   plugins: [
  56     typescript({
  57       tsconfig: isDevelopmentBuild
  58         ? 'tsconfig.development.json'
  59         : 'tsconfig.production.json'
  60     }),
  61     del({
  62       targets: ['lib/*']
  63     }),
  64     isAnalyzeBuild && analyze(),
  65     isDocumentationBuild && command('pnpm typedoc')
  66   ]
  67 }