Fix worker event loop ref/unref + leak (#4114)

* make more tests pass

* worker changes

* fix some bugs

* remove this

* progress

* uh

* okay

* remove console log

* a

* comment assert for later

* mergable state

* remove test

* remove test

1 files changed, 11 insertions, 0 deletions

diff --git a/test/js/web/many-messages-event-loop.mjs b/test/js/web/many-messages-event-loop.mjs
new file mode 100644
index 000000000..deae5f791
--- /dev/null
+++ b/test/js/web/many-messages-event-loop.mjs
@@ -0,0 +1,11 @@
+const worker = new Worker(new URL(process.argv[2], import.meta.url));
+
+worker.postMessage("initial message");
+worker.addEventListener("message", function fn({ data }) {
+  if (data.done) {
+    console.log("done");
+    worker.removeEventListener("message", fn);
+  } else {
+    worker.postMessage({ i: data.i + 1 });
+  }
+});