export declare function getAttribute(element: HTMLElement, attributeName: string): [string, HTMLElement];
export declare function getRowIndexAttribute(element: HTMLElement): number;
export declare function getRowKeyAttribute(element: HTMLElement): string;
export declare function getCellPosition(element: HTMLElement): [number, number];
export declare const makeMapAdder: <K, V>(k: K, v: V) => (old: Map<K, V>) => Map<K, V>;
export declare const makeMapDeleter: <K, V>(k: K) => (old: Map<K, V>) => Map<K, V>;
export declare const clamp: (x: number | undefined, min: number, max: number) => number;