Method preventStalling

lib/queue.js:545–553

()

      completed = false;

    const preventStalling = () => {
      psTimeout = null;
      if (this._isClosed) return;
      finally_(this._preventStall(job.id), () => {
        if (completed || this._isClosed) return;
        const interval = this.settings.stallInterval / 2;
        psTimeout = setTimeout(preventStalling, interval);
      }).catch(this._emitErrorAfterTick);
    };
    preventStalling();

    const handleOutcome = (err, data) => {