export declare const isBoolean: (data: any) => boolean;
export declare const isNumber: (data: any) => boolean;
export declare const isBigInt: (data: any) => boolean;
export declare const isDate: (data: unknown) => data is Date;
export declare const isString: (data: any) => boolean;
export declare const isArray: (data: any) => boolean;
export declare const isObject: (data: any) => boolean;
export declare const isNull: (data: any) => boolean;
export declare const isUndefined: (data: any) => boolean;