refactor: replace `deferred()` from `std/async` with `Promise.withResolvers()` (#21234)

Closes #21041

---------

Signed-off-by: Asher Gomez <ashersaupingomez@gmail.com>

1 files changed, 4 insertions, 21 deletions

diff --git a/ext/node/polyfills/testing.ts b/ext/node/polyfills/testing.ts
index 192a0cc71..83e8f6f0b 100644
--- a/ext/node/polyfills/testing.ts
+++ b/ext/node/polyfills/testing.ts
@@ -5,23 +5,6 @@
 
 import { notImplemented, warnNotImplemented } from "ext:deno_node/_utils.ts";
 
-export function deferred() {
-  let methods;
-  const promise = new Promise((resolve, reject) => {
-    methods = {
-      async resolve(value) {
-        await value;
-        resolve(value);
-      },
-      // deno-lint-ignore no-explicit-any
-      reject(reason?: any) {
-        reject(reason);
-      },
-    };
-  });
-  return Object.assign(promise, methods);
-}
-
 export function run() {
   notImplemented("test.run");
 }
@@ -124,13 +107,13 @@ function prepareOptions(name, options, fn, overrides) {
   return { fn, options: finalOptions, name };
 }
 
-function wrapTestFn(fn, promise) {
+function wrapTestFn(fn, resolve) {
   return async function (t) {
     const nodeTestContext = new NodeTestContext(t);
     try {
       await fn(nodeTestContext);
     } finally {
-      promise.resolve(undefined);
+      resolve();
     }
   };
 }
@@ -138,11 +121,11 @@ function wrapTestFn(fn, promise) {
 function prepareDenoTest(name, options, fn, overrides) {
   const prepared = prepareOptions(name, options, fn, overrides);
 
-  const promise = deferred();
+  const { promise, resolve } = Promise.withResolvers();
 
   const denoTestOptions = {
     name: prepared.name,
-    fn: wrapTestFn(prepared.fn, promise),
+    fn: wrapTestFn(prepared.fn, resolve),
     only: prepared.options.only,
     ignore: prepared.options.todo || prepared.options.skip,
   };