feat: Add WorkerOptions interface to type declarations (#9147)

cli/dts/lib.deno.shared_globals.d.ts

@@ -653,13 +653,7 @@ interface WorkerEventMap extends AbstractWorkerEventMap {
   "messageerror": MessageEvent;
 }
 
-declare class Worker extends EventTarget {
+interface WorkerOptions {
-  onerror?: (e: ErrorEvent) => void;
-  onmessage?: (e: MessageEvent) => void;
-  onmessageerror?: (e: MessageEvent) => void;
-  constructor(
-    specifier: string,
-    options?: {
   type?: "classic" | "module";
   name?: string;
   /** UNSTABLE: New API.
@@ -739,7 +733,15 @@ declare class Worker extends EventTarget {
       write?: "inherit" | boolean | Array<string | URL>;
     };
   };
-    },
+}
+
+declare class Worker extends EventTarget {
+  onerror?: (e: ErrorEvent) => void;
+  onmessage?: (e: MessageEvent) => void;
+  onmessageerror?: (e: MessageEvent) => void;
+  constructor(
+    specifier: string,
+    options?: WorkerOptions,
   );
   postMessage(message: any, transfer: ArrayBuffer[]): void;
   postMessage(message: any, options?: PostMessageOptions): void;

cli/tests/workers_test.ts

@@ -113,9 +113,10 @@ Deno.test({
   name: "worker globals",
   fn: async function (): Promise<void> {
     const promise = deferred();
+    const workerOptions: WorkerOptions = { type: "module" };
     const w = new Worker(
       new URL("workers/worker_globals.ts", import.meta.url).href,
-      { type: "module" },
+      workerOptions,
     );
     w.onmessage = (e): void => {
       assertEquals(e.data, "true, true, true");