/**
 * Which `html` template rendered an element, on a page the plugin never
 * built, so a host with the page's sources can find where it is written.
 * The plugin stamps that place on the element at transform time; without
 * it, the only lead is the template's own text.
 *
 * lit-html keeps a template's strings only as a module-private cache key,
 * so they are recorded as templates are made: lit-html hands its
 * `ChildPart` class to `litHtmlPolyfillSupport` (`…DevMode` in the
 * development build) when it loads, and the hook installed here wraps the
 * method that looks a result's template up (`_$getTemplate`, `_$AC` in the
 * production build) to remember the strings of each template it returns.
 * That only works if it runs before the page's lit-html does, at
 * `document_start` in the extension. A hook something else sets, before or
 * after, still runs.
 *
 * Reading which template made an element walks lit-html's part tree with
 * the same private names `child-state.ts` uses. Every step is guarded; a
 * surprise leaves the element without a template site.
 */
import type { TemplateSite } from '../../types/inspector.js';
/**
 * Sets the polyfill hooks lit-html calls as it loads. Idempotent. A hook
 * already there, or one set later, is called too.
 */
export declare const installTemplateSites: () => void;
/**
 * The template that rendered `el` and which of its `<tag>` elements `el` is,
 * when the hook recorded that template; `undefined` otherwise.
 */
export declare const templateSiteOf: (el: Element) => TemplateSite | undefined;
//# sourceMappingURL=template-sites.d.ts.map