import { AtUriString } from '@atproto/syntax';
export declare const SITE_STANDARD_NSID_PREFIX = "site.standard.";
/**
 * Composes a stable map key from an `(uri, cid)` pair. A single hydration
 * batch can pull more than one version of the same SS record URI (different
 * posts pinning different cids), so the composite is needed for O(1)
 * version-exact lookups.
 */
export declare const siteStandardRecordKey: (uri: string, cid: string) => string;
export declare const parseSiteStandardRecordKey: (key: string) => {
    uri: AtUriString;
    cid: string;
};
/**
 * Confirm that the supplied SS records actually back `assumedUrl`. The
 * record-side URL is built by concatenating the publication URL (or the
 * loose-doc site) with the document's `path` field, then both sides are
 * canonicalized for equality: lowercase host, query/fragment dropped,
 * trailing slash stripped.
 *
 * Path concatenation is `base + '/' + path` semantics — a leading `/` on
 * `path` does NOT swallow the base's pathname (the way
 * `new URL(path, base)` would). So
 * `'https://atproto.com/blog' + '/indexing-standard-site'` resolves to
 * `https://atproto.com/blog/indexing-standard-site` regardless of which
 * side carries the slash.
 *
 * Structural validation of the doc/pub pair (matching `site` ↔ pub URI,
 * no orphan docs that claim a missing publication) happens upstream in
 * `getSiteStandardRecordsFromHydrationMapsByRefs` /
 * `…ByDocumentUri` (see `hydration/external.ts`); by the time this
 * function runs the pair is already known to be structurally consistent,
 * so we only check whether the records back the URL.
 *
 * Cases:
 * - Document + publication: `publication.url + document.path` must
 *   canonicalize to `assumedUrl`.
 * - Loose document (web-URL `site`): `document.site + document.path`
 *   must canonicalize to `assumedUrl`. (Doc with at-uri `site` but no
 *   publication can't reach this function — the lookups reject it.)
 * - Publication only: `publication.url` must canonicalize to
 *   `assumedUrl`.
 * - Neither: vacuously valid; the caller short-circuits before we get
 *   here.
 */
export declare const validateStandardSiteForUrl: (document: {
    ref: {
        uri: string;
    };
    info: {
        record: {
            site: string;
            path?: string;
        };
    };
} | undefined, publication: {
    ref: {
        uri: string;
    };
    info: {
        record: {
            url: string;
        };
    };
} | undefined, assumedUrl: string) => boolean;
/**
 * Estimate reading time in minutes from a plaintext document body. Returns
 * `undefined` when the input has no countable words. Uses a coarse
 * `WORDS_PER_MINUTE` heuristic; swap in a more accurate library here if
 * needed (e.g. `reading-time`).
 */
export declare const estimateReadingTimeMinutes: (text: string) => number | undefined;
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