build.ts

import { build, type Options } from 'tsup'
import { writeFile } from 'fs/promises'
import { generateDtsBundle } from 'dts-bundle-generator'
import { dirname, join } from 'path'
import { mkdir } from 'fs/promises'
import { existsSync } from 'fs'
import { rm } from 'fs/promises'

if (existsSync('JsxSSR.d.ts')) await rm('JsxSSR.d.ts', { recursive: true })
if (existsSync('cjs')) await rm('cjs', { recursive: true })
if (existsSync('esm')) await rm('esm', { recursive: true })

const sharedConfig: Options = {
  platform: 'node',
  entry: ['src/JsxSSR.ts'],
  bundle: true,
  minify: true,
  minifyIdentifiers: true,
  minifySyntax: true,
  minifyWhitespace: true,
  skipNodeModulesBundle: true,
  clean: true,
  dts: false
}

await build({
  format: 'cjs',
  outDir: 'cjs',
  tsconfig: './tsconfig.cjs.json',
  splitting: false,
  shims: true,
  ...sharedConfig
})

await build({
  format: ['esm'],
  outDir: 'esm',
  tsconfig: './tsconfig.mjs.json',
  splitting: true,
  cjsInterop: false,
  ...sharedConfig
})

await writeFile('cjs/package.json', JSON.stringify({ type: 'commonjs' }, null, 2))
await writeFile('esm/package.json', JSON.stringify({ type: 'module' }, null, 2))

const dtsPath = join(process.cwd(), 'JsxSSR.d.ts')
const dtsCode = generateDtsBundle([{
  filePath: join(process.cwd(), 'src/JsxSSR.ts'),
  output: {
    sortNodes: true,
    exportReferencedTypes: true,
    inlineDeclareExternals: true,
    inlineDeclareGlobals: true
  }
}])

await mkdir(dirname(dtsPath), { recursive: true })
await writeFile(dtsPath, dtsCode, { encoding: 'utf-8' })