/**
 * Names an element so it can be found again after a reload, when the numeric
 * ids the inspector uses have been minted afresh.
 *
 * An element the transform stamped with its template call site is named by
 * that site and its place among the elements stamped with the same site, in
 * document order (shadow trees included, each after its host). Anything else
 * is named by its tag and its path from the document: child indexes, with a
 * hop into a shadow root marked. Both shift when a list reorders or a
 * conditional renders differently; a key that finds the wrong element of the
 * right tag is caught by `setProp`'s guards, or not at all, which is the
 * price of matching without help from the app.
 */
import type { ElementKey } from '../../../types/inspector.js';
export type { ElementKey };
/**
 * Every element in document order, each shadow tree right after its host:
 * a closed one too, where Lit keeps it on the element, as the tree does.
 */
export declare function deepElements(root: ParentNode): Generator<Element>;
/** The key `el` would be found by after a reload. */
export declare const keyOf: (el: Element) => ElementKey;
/** Whether `key` names `el`. */
export declare const matchesKey: (el: Element, key: ElementKey) => boolean;
/** The element `key` names in `doc`, if there is one. */
export declare const findByKey: (key: ElementKey, doc?: Document) => Element | undefined;
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