getDependencies = function getDependencies(cell) {
        return (0, _array.arrayReduce)(_this.data, function (acc, cellValue) {
          if (cellValue.hasPrecedent(cell) && acc.indexOf(cellValue) === -1) {
            acc.push(cellValue);
          }

          return acc;
        }, []);
      }
Get cell dependencies using visual coordinates.

@param {Object} cellCoord Visual cell coordinates object.