/**
* Get visitor keys of a given node.
* @param {object} node The AST node to get keys.
* @returns {readonly string[]} Visitor keys of the node.
*/
export function getKeys(node: object): readonly string[];
/**
* Make the union set with `KEYS` and given keys.
* @param {VisitorKeys} additionalKeys The additional keys.
* @returns {VisitorKeys} The union set.
*/
export function unionWith(additionalKeys: VisitorKeys): VisitorKeys;
export { KEYS };
export type VisitorKeys = {
readonly [type: string]: readonly string[];
};
import KEYS from "./visitor-keys.js";
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