export declare function delay(milliseconds: number): Promise<void>;
/**
 * Checks if object has that property
 *
 * @param {K} prop
 * @param {T} obj
 * @return {obj is T & Record<K, V>}
 */
export declare const has: <T extends object, K extends PropertyKey, V>(prop: K, obj: T) => obj is T & Record<K, V>;