export type KeyType = string | number;
type ValueType = [number, any];
declare class Entity {
    instanceId: string;
    constructor(instanceId: string);
    /** @private Internal cache map. Do not access this directly */
    cache: Map<string, ValueType>;
    get(keys: KeyType[] | string): ValueType | null;
    update(keys: KeyType[] | string, valueFn: (origin: ValueType | null) => ValueType | null): void;
}
export default Entity;