add hw2

node_modules/thread-stream/test/esm.test.mjs

@@ -0,0 +1,47 @@
+import { test } from 'tap'
+import { readFile } from 'fs'
+import ThreadStream from '../index.js'
+import { join } from 'desm'
+import { pathToFileURL } from 'url'
+import { file } from './helper.js'
+
+function basic (text, filename) {
+  test(text, function (t) {
+    t.plan(5)
+
+    const dest = file()
+    const stream = new ThreadStream({
+      filename,
+      workerData: { dest },
+      sync: true
+    })
+
+    stream.on('finish', () => {
+      readFile(dest, 'utf8', (err, data) => {
+        t.error(err)
+        t.equal(data, 'hello world\nsomething else\n')
+      })
+    })
+
+    stream.on('close', () => {
+      t.pass('close emitted')
+    })
+
+    t.ok(stream.write('hello world\n'))
+    t.ok(stream.write('something else\n'))
+
+    stream.end()
+  })
+}
+
+basic('esm with path', join(import.meta.url, 'to-file.mjs'))
+basic('esm with file URL', pathToFileURL(join(import.meta.url, 'to-file.mjs')).href)
+
+basic('(ts -> es6) esm with path', join(import.meta.url, 'ts', 'to-file.es6.mjs'))
+basic('(ts -> es6) esm with file URL', pathToFileURL(join(import.meta.url, 'ts', 'to-file.es6.mjs')).href)
+
+basic('(ts -> es2017) esm with path', join(import.meta.url, 'ts', 'to-file.es2017.mjs'))
+basic('(ts -> es2017) esm with file URL', pathToFileURL(join(import.meta.url, 'ts', 'to-file.es2017.mjs')).href)
+
+basic('(ts -> esnext) esm with path', join(import.meta.url, 'ts', 'to-file.esnext.mjs'))
+basic('(ts -> esnext) esm with file URL', pathToFileURL(join(import.meta.url, 'ts', 'to-file.esnext.mjs')).href)