import { readdir, readFile } from 'node:fs/promises'
import { stripTypeScriptTypes } from 'node:module'
import { dirname, extname, join, resolve } from 'node:path'
import { fileURLToPath } from 'node:url'

const here = dirname(fileURLToPath(import.meta.url))
const sourceRoot = resolve(here, '../src')

async function filesUnder(directory) {
  const entries = await readdir(directory, { withFileTypes: true })
  const files = []
  for (const entry of entries) {
    const path = join(directory, entry.name)
    if (entry.isDirectory()) files.push(...(await filesUnder(path)))
    else if (extname(path) === '.ts') files.push(path)
  }
  return files
}

for (const file of await filesUnder(sourceRoot)) {
  stripTypeScriptTypes(await readFile(file, 'utf8'), { mode: 'transform' })
}