declare type Key = string | number;
export interface AnyMap {
    [key: Key]: any;
}
export interface MapOf<T> {
    [key: Key]: T;
}
export declare type ItemInMap<M extends AnyMap, T extends M[keyof M] = M[keyof M]> = T;
export declare type FilterType<T, U, K extends keyof T = keyof T> = {
    [_K in K as T[_K] extends U ? _K : never]: T[_K];
};
export declare type KeysOfFilteredType<T, U> = keyof FilterType<T, U> & (string | number);
export {};