fix(node-runtime-worker-thread): Actually wait for the worker child process to terminate before resolving

Co-authored-by: Anna Henningsen <[email protected]>

Author: gribnoysup

packages/node-runtime-worker-thread/src/index.ts

@@ -102,6 +102,9 @@ class WorkerRuntime implements Runtime {
   async terminate() {
     await this.initWorkerPromise;
     this.childProcess.kill('SIGTERM');
+    if (this.childProcess.exitCode === null && this.childProcess.signalCode === null) {
+      await once(this.childProcess, 'exit');
+    }
   }
 }