https://jsfiddle.net/7w3hxh1u/1/

abortable-promise.js

class AbortablePromise extends Promise {
  constructor(fn) {
    let _reject = null;

    super((resolve, reject) => {
      _reject = reject;
      return fn(resolve, reject);
    });
    
    this.abort = () => {
      this.abort.aborted = true;
      _reject(null);
      return this;
    }
  }

  then(resolve, reject) {
    const promise = super.then(val => {
      if (this.abort.aborted && reject) {
        return reject(null); 
      }
      else if (!this.abort.aborted && resolve) {
        return resolve(val);
      }
    }, () => {});

    promise.abort = this.abort;
    return promise;
  }

  resolve(promise) {
    return new AbortablePromise((res, rej) => promise.then(res).catch(rej));
  }
}