type AnyFn = (...args: any[]) => any;
export declare function isBoolean(value: unknown): value is boolean;
export declare function isFunction(value: unknown): value is AnyFn;
export declare function randomString(length?: number): string;
export declare function getObjVal(source: Record<string, any> | null | undefined, path: string, defaultValue?: any): any;
export declare function to<T>(promise: Promise<T>): Promise<[any, T?]>;
export declare function debounce<T extends AnyFn>(fn: T, delay?: number): T;
export declare function deepClone<T>(value: T, cache?: WeakMap<object, any>): T;
export {};