/**
 * A helper function to get first key in Map that matches given value
 */
export declare function getKeyByValue(map: Map<string, string | undefined>, searchValue: string): string | undefined;
/**
 * A helper function to get parent path of current item path
 */
export declare function getParentPath(currentPath: string): string;
/**
 * A helper function to get next path of current item path in same level
 */
export declare function getNextPathSameLevel(currentPath: string, currentPathEnd: number): string;
/**
 * A helper function to get the last index number of an item path string
 */
export declare function getLastPathIndex(path: string): number;
export declare function getParentTreeItem(itemPathMap: Map<string, string | undefined>, currentId: string): string;
/**
 * A helper function for getNextTreeItem
 */
export declare function getNextNodeHigherLevel(itemPathMap: Map<string, string | undefined>, currentPath: string): string | undefined;
export declare function getNextTreeItem(itemPathMap: Map<string, string | undefined>, currentId: string): string;
/**
 * A helper function for getPrevTreeItem
 */
export declare function getLastInNode(itemPathMap: Map<string, string | undefined>, currItemPath: string): string | undefined;
export declare function getPrevTreeItem(itemPathMap: Map<string, string | undefined>, currentId: string): string;
export declare function getFirstTreeItem(itemPathMap: Map<string, string | undefined>): string | undefined;
export declare function getLastTreeItem(itemPathMap: Map<string, string | undefined>, currItemPath?: string): string | undefined;