Understanding Promise Internals: A Deep Dive into Promise/A+ Implementation
Constructor
The Promise constructor accepts an executor function that receives two arguments: resolve and reject. This is where the core initialization logic resides.
class SimplePromise {
constructor(executor) {
this.status = PENDING;
this.onFulfilledCallbacks = [];
this.onRejectedCallbacks = [];
executor(
...
Posted on Fri, 08 May 2026 04:06:07 +0000 by jmosterb