import { TreeNode } from "fluid-framework";
import { proxiedChildrenKey, rawTNodeKey } from "./tree-node-constants.js";
export interface ICustomProxyHandler<TNode extends TreeNode = TreeNode> {
    [rawTNodeKey]: TNode;
    [proxiedChildrenKey]: Record<string, TreeNode>;
}
export declare function isProxy(value: any): value is typeof Proxy;
export declare function isCustomProxyHandler<TNode extends TreeNode = TreeNode>(value: any): value is ICustomProxyHandler<TNode>;
export declare function isTreeNode(value: any): value is TreeNode;
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