export declare const isNull: (data: any) => boolean; export declare const isNotNull: (data: any) => boolean; export declare const isEmpty: (data: any) => boolean; export declare const isNotEmpty: (data: any) => boolean; export declare const throwIf: (condition: boolean, exception: Error) => void; export declare const throwIfNot: (condition: boolean, exception: Error) => void; export declare const throwIfNull: (data: any, exception: Error) => void; export declare const throwIfNotNull: (data: any, exception: Error) => void; export declare const isString: (data: any) => boolean; export declare const isNumber: (data: any) => boolean;