import { IdName, KeyPair, KeyPairEx, Tree } from "../models";
import { IFlattenTree, IFlattenTreeNode, INode, ITreeNode } from "../models/tree";
export declare class ArrayHelper {
    static insert(array: any[], index: number, item: any): void;
    /**
     * Remove item from array
     * @param array
     * @param item item to remove
     */
    static remove(array: any[], item: any): void;
    /**
     * Remove all items from array
     * @param array
     * @param item item to remove
     */
    static removeAll(array: any[], item: any): void;
    static move(array: any[], fromIndex: number, toIndex: number): any[];
    static contains(value: any[], v: any): boolean;
    static isArray(value: any): boolean;
    static distinct(array: any[]): any[];
    /**
     * Returns a new array with duplicates removed based on a specific key or selector.
     * @param array The source array.
     * @param keySelector A function that returns the value to compare by.
     */
    static distinctBy<T, K>(array: T[], keySelector: (item: T) => K): T[];
    static filterByKeyString(filterValue: any, key: string, array: any[]): any[];
    /**
     * Filters an array based on whether the value derived by the keySelector
     * equals the filterValue.
     * @param filterValue The value to match.
     * @param keySelector A function that takes an item of type T and returns the key value of type K.
     * @param array The array of items to filter.
     * @returns A new array containing only the items that match the filter criteria.
     */
    static filterByKey<T, K>(filterValue: K, keySelector: (item: T) => K, array: T[]): T[];
    static flatten(array: any, indent?: number): any[];
    /**
    * @deprecated use flattenDropDownList2
    */
    static flattenDropDownList(tree: Tree | Tree[], indent?: number): IFlattenTree<any, any>[];
    static flattenTreeNodeDropDownList(tree: ITreeNode | ITreeNode[], indent?: number): IFlattenTreeNode[];
    private static enumToKeyPairBaseArray;
    static enumToKeyPairArray(value: any): KeyPair<number, string>[];
    static enumToKeyPairExArray(value: any): KeyPairEx<number, string>[];
    static enumToArray<T extends IdName<number, string>>(value: any): T[];
    /**
     * Method to create a tree from a flat array of nodes
     * @param array
     * @param safe if tue and some nodes not have parent thand adds as a root node. if false than thoose nodes skipped.
     * @returns
     */
    static createTree(array: INode[], safe?: boolean): ITreeNode[];
}