import type { VcTreeNodeType } from '../../types';
/**
 * Helpers for safely narrowing values that come back from `el-tree`'s
 * intentionally-loose `any` boundary, or from indexing an object by a
 * dynamic `keyof T` (which under `Record<string, unknown>` returns
 * `unknown`).
 *
 * No type assertions: every narrowing here is a real runtime check or a
 * type predicate that ESLint's `no-restricted-syntax` rule will allow.
 */
export declare function asArray<T>(v: unknown): Array<T>;
export declare function asTreeKey(v: unknown): string | number;
/**
 * Narrows an opaque value back to the generic node type. We pass
 * `Array<NodeType>` down to `el-tree` and trust it to round-trip the same
 * objects in its callbacks; el-tree's signature uses `any`, which we don't
 * — so this predicate bridges the gap. It only guards against null/non-
 * object inputs at runtime; the shape itself is the consumer's contract.
 */
export declare function isTreeNode<NodeType extends VcTreeNodeType>(v: unknown): v is NodeType;