export declare class ReversibleMap<TKey extends string | number | symbol, TValue extends Object | string | number> {
    private readonly valueToKey;
    private readonly keyToValue;
    setUnique: (key: TKey, value: TValue) => void;
    getKey: (value: TValue) => TKey;
    getValue(key: TKey): TValue;
    deleteKey: (key: TKey) => TValue | undefined;
    deleteValue: (value: TValue) => TKey | undefined;
    hasKey: (key: TKey) => boolean;
    hasValue: (value: TValue) => boolean;
}