import { Active, Over, UniqueIdentifier } from "@dnd-kit/core";
import { FlattenedItem, Projected, TreeItem } from "../types";
export declare function getDragDepth(offset: number, indentationWidth: number): number;
export declare function determineNewParentId(active: Active, over: Over | null, activeNode: FlattenedItem, overNode: FlattenedItem | null, projected: Projected): string | null | undefined;
export declare function getActiveAndOverNodes(tree: FlattenedItem[], activeId: UniqueIdentifier, overId?: UniqueIdentifier | undefined): {
    activeNode: FlattenedItem;
    activeNodeIndex: number;
    overNode: FlattenedItem | null;
    overNodeIndex: number;
};
export declare function getIndicesToUpdate(activeNode: FlattenedItem, activeNodeIndex: number, flattenedTree: FlattenedItem[], projected: Projected): number[];
export declare function flattenTree(tree: TreeItem[], parentId: string | null, depth?: number): FlattenedItem[];
export declare function updateParentIds(flattenedTree: any[], indices: number[], newParentId: string | null | undefined): void;
export declare function findItemIndexInTree(tree: any[], itemId: string): number | null;
export declare function generateUpdateData(updatedFlattenedTree: FlattenedItem[], tree: TreeItem[]): {
    updateArray: {
        _id: string;
        position: number;
        parentId?: string | undefined;
    }[];
    updatedTreeData: FlattenedItem[];
};
export declare const buildTree: (flatNodes: FlattenedItem[]) => TreeItem[];
export declare function getProjection(items: FlattenedItem[], activeId: UniqueIdentifier, overId: UniqueIdentifier, dragOffset: number, indentationWidth: number): {
    depth: number;
    parentId: string | null;
    activeId: UniqueIdentifier;
    previousItem: FlattenedItem;
};