import { GroupByMultiselectOption, MultiselectOption } from './models/multiselect-option.model';
export declare function pseudoClassExist(node: HTMLElement, selector: string): any;
export declare function closest(el: HTMLElement | null, selector: string): boolean;
export declare function collectAllDescendants(collection: GroupByMultiselectOption[], groupProperty: string, groupName: string): GroupByMultiselectOption[];
export declare function optionsGrouping(options: GroupByMultiselectOption[], groupByProperty: string): GroupByMultiselectOption[];
export declare function findUnique<T>(expression: T[]): T[];
export declare function virtualOptionsGroupingFlatten(options: GroupByMultiselectOption[], groupByProperty: string): GroupByMultiselectOption[];
export declare function mirrorObject(json: Record<string, string>): Record<string, string>;
export declare function mapDatasourceToFields(collection: MultiselectOption[], propertyMap: Record<string, string>, groupedProperty?: string): MultiselectOption[];