DevTools: setImmediate polyfill should handle arguments

third_party/WebKit/Source/devtools/front_end/platform/utilities.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1348 matching lines @@
 /**
  * @param {*} value
  */
 function suppressUnused(value) {
 }
 
 /**
  * @param {function()} callback
  * @return {number}
  */
 self.setImmediate = function(callback) {

[PhistucK, 2017/01/07 11:29:29]

Why not callback, ...args?
It removes the need for slice afterwards.

-  Promise.resolve().then(callback);
+  const args = [...arguments].slice(1);
+  Promise.resolve().then(() => callback(...args));
   return 0;
 };
 
 /**
  * @param {function(...?)} callback
  * @return {!Promise.<T>}
  * @template T
  */
 Promise.prototype.spread = function(callback) {
   return this.then(spreadPromise);
@@ skipping 52 matching lines @@
   while (leftIndex < leftKeys.length) {
     var leftKey = leftKeys[leftIndex++];
     removed.push(this.get(leftKey));
   }
   while (rightIndex < rightKeys.length) {
     var rightKey = rightKeys[rightIndex++];
     added.push(other.get(rightKey));
   }
   return {added: added, removed: removed, equal: equal};
 };