1 files changed, 6 insertions, 22 deletions
diff --git a/cli/tests/workers_round_robin_bench.ts b/cli/tests/workers_round_robin_bench.ts
index 2edb92b8c..8467480b8 100644
--- a/cli/tests/workers_round_robin_bench.ts
+++ b/cli/tests/workers_round_robin_bench.ts
@@ -5,26 +5,10 @@ const data = "HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n";
 const workerCount = 4;
 const cmdsPerWorker = 400;
 
-export interface ResolvableMethods<T> {
-  resolve: (value: T | PromiseLike<T>) => void;
-  // deno-lint-ignore no-explicit-any
-  reject: (reason?: any) => void;
-}
-
-export type Resolvable<T> = Promise<T> & ResolvableMethods<T>;
-
-export function createResolvable<T = void>(): Resolvable<T> {
-  let methods: ResolvableMethods<T>;
-  const promise = new Promise<T>((resolve, reject): void => {
-    methods = { resolve, reject };
-  });
-  // TypeScript doesn't know that the Promise callback occurs synchronously
-  // therefore use of not null assertion (`!`)
-  return Object.assign(promise, methods!) as Resolvable<T>;
-}
+import { Deferred, deferred } from "../../std/async/deferred.ts";
 
 function handleAsyncMsgFromWorker(
-  promiseTable: Map<number, Resolvable<string>>,
+  promiseTable: Map<number, Deferred<string>>,
   msg: { cmdId: number; data: string },
 ): void {
   const promise = promiseTable.get(msg.cmdId);
@@ -35,13 +19,13 @@ function handleAsyncMsgFromWorker(
 }
 
 async function main(): Promise<void> {
-  const workers: Array<[Map<number, Resolvable<string>>, Worker]> = [];
+  const workers: Array<[Map<number, Deferred<string>>, Worker]> = [];
   for (let i = 1; i <= workerCount; ++i) {
     const worker = new Worker(
       new URL("subdir/bench_worker.ts", import.meta.url).href,
       { type: "module" },
     );
-    const promise = createResolvable();
+    const promise = deferred();
     worker.onmessage = (e): void => {
       if (e.data.cmdId === 0) promise.resolve();
     };
@@ -58,7 +42,7 @@ async function main(): Promise<void> {
   for (const cmdId of Array(cmdsPerWorker).keys()) {
     const promises: Array<Promise<string>> = [];
     for (const [promiseTable, worker] of workers) {
-      const promise = createResolvable<string>();
+      const promise = deferred<string>();
       promiseTable.set(cmdId, promise);
       worker.postMessage({ cmdId: cmdId, action: 1, data });
       promises.push(promise);
@@ -68,7 +52,7 @@ async function main(): Promise<void> {
     }
   }
   for (const [, worker] of workers) {
-    const promise = createResolvable();
+    const promise = deferred();
     worker.onmessage = (e): void => {
       if (e.data.cmdId === 3) promise.resolve();
     };