Implement ES2024 Promise.withResolvers

lib/InternalBytecode/01-Promise.js

@@ -365,6 +365,17 @@
     return error;
   }
 
+  function withResolvers() {
+    var resolve, reject;
+    var promise = new this(function(doResolve, doReject) {
+      resolve = doResolve;
+      reject = doReject;
+    });
+    return { resolve, reject, promise };
+  }
+
+  core.withResolvers = withResolvers;
+
   core.any = function promiseAny(values) {
     return new core(function(resolve, reject) {
       var promises = iterableToArray(values);

test/hermes/promise-withResolvers.js

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// RUN: %hermes -Xes6-promise %s | %FileCheck --match-full-lines %s
+// RUN: %hermes -Xmicrotask-queue %s | %FileCheck --match-full-lines %s
+// RUN: %hermesc -O -emit-binary -out %t.hbc %s && %hermes -Xes6-promise %t.hbc | %FileCheck --match-full-lines %s
+
+print('Promise.withResolvers');
+// CHECK-LABEL: Promise.withResolvers
+
+function PromiseLike(executor) {
+  executor(
+      function (v) { print('Resolved:', v) },
+      function (e) { print('Rejected:', e) }
+  );
+}
+
+var {resolve} = Promise.withResolvers.call(PromiseLike)
+resolve('message1')
+// CHECK-NEXT: Resolved: message1
+
+var {resolve, promise} = Promise.withResolvers();
+resolve('success withResolver!');
+promise.then(function (message) {
+  print('Resolved:', message);
+});
+// CHECK-NEXT: Resolved: success withResolver!
+
+var {reject, promise} = Promise.withResolvers();
+reject('failure withResolver!');
+promise.then(function (message) {
+  print('Resolved:', message);
+}).catch(function(e) {
+  print('Rejection:', e)
+});
+// CHECK-NEXT: Rejection: failure withResolver!

test/hermes/promise.js

@@ -24,6 +24,10 @@ print('allSettled' in Promise);
 print('any' in Promise);
 // CHECK-NEXT: true
 
+print('withResolvers' in Promise);
+// CHECK-NEXT: true
+
+
 var promise = new Promise(function(res, rej) {
   res('success!');
 });