code: function move(offsetX) {
      var offsetY = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : offsetX;
      var _this$canvasData = this.canvasData,
          left = _this$canvasData.left,
          top = _this$canvasData.top;
      return this.moveTo(isUndefined(offsetX) ? offsetX : left + Number(offsetX), isUndefined(offsetY) ? offsetY : top + Number(offsetY));
    }
docs: Move the canvas with relative offsets
  @param {number} offsetX - The relative offset distance on the x-axis.
  @param {number} [offsetY=offsetX] - The relative offset distance on the y-axis.
  @returns {Cropper} this