export default function useMap<T>(defaultValue: T[], keyMapper?: (value: T) => any): {
    map: Map<any, T>;
    has: (value: T) => boolean;
    add: (value: T) => Map<any, T>;
    remove: (value: T) => Map<any, T>;
    toggle: (value: T) => Map<any, T>;
    clear: () => void;
    replace: (values: T[]) => void;
};