How to use

nonEmptyQs

function

in

Array

async peek(n = 1, options = null) {
    const queues = await this.getQueuesFunc();
    const qServices = shuffle(this._getQServices(queues));
    const perQ = qServices.length > 1 ? Math.floor(n / qServices.length) : qServices.length;

    // First, iterate evenly and randomly on status queues
    const partial = await this._peek(qServices, perQ, options);

    if (partial.done) {
      return partial.result;
    }
    let messagesLeftToPeek = n - partial.result.length;

    // In case queues are uneven, iterate again. This time, request for all n messages and trim
    return await this._peek(partial.result.nonEmptyQs, messagesLeftToPeek, options);
  }

async pop(n = 1, options = null) {
    const queues = await this.getQueuesFunc();
    const qServices = shuffle(this._getQServices(queues));
    const perQ = qServices.length > 1 ? Math.floor(n / qServices.length) : qServices.length;

    // First, iterate evenly and randomly on status queues
    const partial = await this._pop(qServices, perQ, options);
    if (partial.done) {
      return partial.result;
    }

    let messagesLeftToPop = n - partial.result.length;

    // In case queues are uneven, iterate again. This time, request for all n messages and trim
    const final = await this._pop(partial.result.nonEmptyQs, messagesLeftToPop, options);
    return partial.result.concat(final.result);
  }