add hw2

node_modules/pino/test/fixtures/ts/transpile.cjs

@@ -0,0 +1,36 @@
+#!/usr/bin/env node
+
+const execa = require('execa')
+const fs = require('fs')
+
+const existsSync = fs.existsSync
+const stat = fs.promises.stat
+
+// Hardcoded parameters
+const esVersions = ['es5', 'es6', 'es2017', 'esnext']
+const filesToTranspile = ['to-file-transport.ts']
+
+async function transpile () {
+  process.chdir(__dirname)
+
+  for (const sourceFileName of filesToTranspile) {
+    const sourceStat = await stat(sourceFileName)
+
+    for (const esVersion of esVersions) {
+      const intermediateFileName = sourceFileName.replace(/\.ts$/, '.js')
+      const targetFileName = sourceFileName.replace(/\.ts$/, `.${esVersion}.cjs`)
+
+      const shouldTranspile = !existsSync(targetFileName) || (await stat(targetFileName)).mtimeMs < sourceStat.mtimeMs
+
+      if (shouldTranspile) {
+        await execa('tsc', ['--target', esVersion, '--module', 'commonjs', sourceFileName])
+        await execa('mv', [intermediateFileName, targetFileName])
+      }
+    }
+  }
+}
+
+transpile().catch(err => {
+  process.exitCode = 1
+  throw err
+})