feat(node): worker_threads

node/README.md

@@ -55,7 +55,7 @@ Deno standard library as it's a compatibility module.
 - [ ] vm
 - [x] wasi
 - [ ] webcrypto
-- [ ] worker_threads
+- [x] worker_threads
 - [ ] zlib
 
 * [x] node globals _partly_

node/testdata/worker_threads.ts

@@ -0,0 +1,29 @@
+import {
+  getEnvironmentData,
+  isMainThread,
+  parentPort,
+  threadId,
+  workerData,
+} from "../worker_threads.ts";
+import { once } from "../events.ts";
+
+async function message(expectedMessage: string) {
+  const [message] = await once(parentPort, "message");
+  if (message !== expectedMessage) {
+    // fail test
+    parentPort.close();
+  }
+}
+
+await message("Hello, how are you my thread?");
+parentPort.postMessage("I'm fine!");
+
+parentPort.postMessage({
+  isMainThread,
+  threadId,
+  workerData: Array.isArray(workerData) &&
+      workerData[workerData.length - 1] instanceof MessagePort
+    ? workerData.slice(0, -1)
+    : workerData,
+  envData: [getEnvironmentData("test"), getEnvironmentData(1)],
+});