Method push

src/lib/util.js:305–312

(thisArg, method, args)

  }

  push(thisArg, method, args) {
    const {promise, resolve, reject} = Promise.withResolvers();
    this.queue.push({promise, resolve, reject, thisArg, method, args});
    if (this.queue.length === 1) {
      this._next();
    }
    return promise;
  }

  _next() {
    if (this.queue.length === 0) {