timers: use kEmptyObject

PR-URL: #43159
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

lib/timers/promises.js

@@ -35,6 +35,10 @@ const {
   validateObject,
 } = require('internal/validators');
 
+const {
+  kEmptyObject,
+} = require('internal/util');
+
 const kScheduler = Symbol('kScheduler');
 
 function cancelListenerHandler(clear, reject, signal) {
@@ -44,7 +48,7 @@ function cancelListenerHandler(clear, reject, signal) {
   }
 }
 
-function setTimeout(after, value, options = {}) {
+function setTimeout(after, value, options = kEmptyObject) {
   const args = value !== undefined ? [value] : value;
   if (options == null || typeof options !== 'object') {
     return PromiseReject(
@@ -88,7 +92,7 @@ function setTimeout(after, value, options = {}) {
       () => signal.removeEventListener('abort', oncancel)) : ret;
 }
 
-function setImmediate(value, options = {}) {
+function setImmediate(value, options = kEmptyObject) {
   if (options == null || typeof options !== 'object') {
     return PromiseReject(
       new ERR_INVALID_ARG_TYPE(
@@ -132,7 +136,7 @@ function setImmediate(value, options = {}) {
       () => signal.removeEventListener('abort', oncancel)) : ret;
 }
 
-async function* setInterval(after, value, options = {}) {
+async function* setInterval(after, value, options = kEmptyObject) {
   validateObject(options, 'options');
   const { signal, ref = true } = options;
   validateAbortSignal(signal, 'options.signal');