declare class CellSpan { constructor(x: number, y: number); public isSpanIndices(x: number, y: number): boolean; public isOccupiedIndices(x: number, y: number): boolean; public register(allSpans: (CellSpan)[], occupiedMap: { [key: string]: CellSpan }): void; public unregister(allSpans: (CellSpan)[], occupiedMap: { [key: string]: CellSpan }): void; } export default CellSpan; export { CellSpan };