constructor(spine, request, pause) {
    this.spine = spine;
    this.request = request;
    this.pause = pause || 100;
    this.q = new queue["a" /* default */](this);
    this.epubcfi = new epubcfi["a" /* default */]();
    this._locations = [];
    this._locationsWords = [];
    this.total = 0;
    this.break = 150;
    this._current = 0;
    this._wordCounter = 0;
    this.currentLocation = '';
    this._currentCfi = '';
    this.processingTimeout = undefined;
  }
Find Locations for a Book
@param {Spine} spine
@param {request} request
@param {number} [pause=100]