import { type $Typed, type AtUriString } from '@atproto/lex-schema';
import { type ExternalRecord } from '../hydration/external.js';
import type { HydrationState } from '../hydration/hydrator.js';
import type { Views } from './index.js';
import type { ExternalRecordView } from './types.js';
export declare const LIVESTREAM_HEARTBEAT_WINDOW_MS: number;
/**
 * Build a modality view from validated, available records in hydration state.
 * With `cid`, the root comes from the exact version in `externalRecordsByRef`
 * (never falling back to latest); everything else stays URI-based.
 */
export declare function externalRecordView(views: Views, uri: AtUriString, state: HydrationState, now: number, cid?: string): $Typed<ExternalRecordView> | undefined;
/** Resolve renderable view dependencies without constructing presentation fields. */
export declare function externalRecordViewRefs(views: Views, uri: AtUriString, state: HydrationState): AtUriString[] | undefined;
/** Whether a selected record passes shared block, review, and takedown checks. */
export declare function isRecordAvailable(info: ExternalRecord | null | undefined, uri: AtUriString, state: HydrationState, views: Views): info is ExternalRecord;
//# sourceMappingURL=external.d.ts.map