export declare function IsSelect(options?: { source?: { url: string; mapping: { text: string | Function; value?: string | Function; disabled?: boolean | Function; group?: string; }; type?: 'json' | 'jsonp'; }; display?: 'bubble' | 'center' | 'inline' | 'top' | 'bottom'; options?: [{ value: any; disabled?: boolean; text: string; group?: string; }]; }): (object: any, propertyName: string) => void;