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

Closes #21041

---------

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

2 files changed, 6 insertions, 8 deletions

diff --git a/cli/tests/unit_node/internal/_randomFill_test.ts b/cli/tests/unit_node/internal/_randomFill_test.ts
index 5e2e154c8..5d56ca65a 100644
--- a/cli/tests/unit_node/internal/_randomFill_test.ts
+++ b/cli/tests/unit_node/internal/_randomFill_test.ts
@@ -6,7 +6,6 @@ import {
   assertNotEquals,
   assertThrows,
 } from "../../../../test_util/std/testing/asserts.ts";
-import { deferred } from "../../../../test_util/std/async/deferred.ts";
 
 const validateNonZero = (buf: Buffer) => {
   if (!buf.some((ch) => ch > 0)) throw new Error("Error");
@@ -17,14 +16,14 @@ const validateZero = (buf: Buffer) => {
 };
 
 Deno.test("[node/crypto.randomFill]", async () => {
-  const promise = deferred();
+  const { promise, resolve } = Promise.withResolvers<boolean>();
   const buf = Buffer.alloc(10);
   const before = buf.toString("hex");
 
   randomFill(buf, 5, 5, (_err, bufTwo) => {
     const after = bufTwo?.toString("hex");
     assertEquals(before.slice(0, 10), after?.slice(0, 10));
-    promise.resolve(true);
+    resolve(true);
   });
 
   await promise;
diff --git a/cli/tests/unit_node/internal/scrypt_test.ts b/cli/tests/unit_node/internal/scrypt_test.ts
index d65cd27ff..83830f8e4 100644
--- a/cli/tests/unit_node/internal/scrypt_test.ts
+++ b/cli/tests/unit_node/internal/scrypt_test.ts
@@ -2,10 +2,9 @@
 import { scrypt, scryptSync } from "node:crypto";
 import { Buffer } from "node:buffer";
 import { assertEquals } from "../../../../test_util/std/testing/asserts.ts";
-import { deferred } from "../../../../test_util/std/async/deferred.ts";
 
 Deno.test("scrypt works correctly", async () => {
-  const promise = deferred();
+  const { promise, resolve } = Promise.withResolvers<boolean>();
 
   scrypt("password", "salt", 32, (err, key) => {
     if (err) throw err;
@@ -46,14 +45,14 @@ Deno.test("scrypt works correctly", async () => {
         115,
       ]),
     );
-    promise.resolve(true);
+    resolve(true);
   });
 
   await promise;
 });
 
 Deno.test("scrypt works with options", async () => {
-  const promise = deferred();
+  const { promise, resolve } = Promise.withResolvers<boolean>();
 
   scrypt(
     "password",
@@ -101,7 +100,7 @@ Deno.test("scrypt works with options", async () => {
           71,
         ]),
       );
-      promise.resolve(true);
+      resolve(true);
     },
   );