export declare function isAbsoluteUrl(url: string): boolean;
export declare function isEmpty(obj: unknown): boolean;
export declare function isFormula(value: unknown): boolean;
export declare function isRegexp(value: unknown): boolean;
export declare function isInvocableFrom(obj: unknown, method: string): boolean;
export declare function isJQueryObject(obj: unknown): boolean;
export declare function isObject(obj: unknown): boolean;
export declare function isNullOrUndefined(obj: unknown): boolean;