import { type AtUriString, type DidString } from '@atproto/lex-schema';
import { type HydrateCtxWithViewer, type Hydrator } from '../../../../hydration/hydrator.js';
import { app, type com } from '../../../../lexicons/index.js';
import type { Views } from '../../../../views/index.js';
import type { TimelineActivity } from './atmosphere-grouping.js';
/** Request-scoped hydration and visibility for incrementally fetched roots. */
export declare class AtmosphereTimelineHydrator {
    private readonly ctx;
    private readonly hydrateCtx;
    private readonly now;
    private state;
    private readonly seen;
    private readonly seenPosts;
    constructor(ctx: {
        hydrator: Hydrator;
        views: Views;
    }, hydrateCtx: HydrateCtxWithViewer, now: number);
    /** Hydrate new roots and their dependencies without repeating prior lookups. */
    hydrate(uris: AtUriString[]): Promise<void>;
    /** Return only an already-loaded, visible author profile for overflow. */
    profile(did: DidString): app.bsky.actor.defs.ProfileViewBasic | undefined;
    /** Recheck current dependencies and moderation without building a view. */
    isVisible(uri: AtUriString): boolean;
    /** Compose a renderable root and the target used by final-page grouping. */
    activity(uri: AtUriString, sortedAt: number): TimelineActivity | undefined;
    private selectActivity;
    private visibleAuthor;
    private hasUnmutedAuthor;
    private visibleRecord;
    private visibleExternal;
}
/** Read the author-declared post reference for a renderable Atmosphere record. */
export declare function getAtmospherePostRef(record: unknown): com.atproto.repo.strongRef.Main | undefined;
//# sourceMappingURL=atmosphere-hydration.d.ts.map