import { type TSESTree } from "@typescript-eslint/utils";
/**
 * Gets a node's parent reference when available.
 *
 * @param node - AST node whose parent should be read.
 *
 * @returns Parent node when present on parser output; otherwise `undefined`.
 */
export declare const getParentNode: (node: Readonly<TSESTree.Node>) => Readonly<TSESTree.Node> | undefined;
/**
 * Walks the parent chain to locate the enclosing `Program` node.
 *
 * @param node - Starting AST node.
 *
 * @returns Nearest enclosing `Program` node; otherwise `null` when no program
 *   boundary can be reached (including cycle-guard termination).
 */
export declare const getProgramNode: (node: Readonly<TSESTree.Node>) => null | Readonly<TSESTree.Program>;
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