import type { SessionPaginationGroup } from "./session-group-pagination.js";
import type { RailSession } from "./session-list-entry.js";
export type SessionListDirtyScopes = {
    revision: number;
    all: number;
    branches: ReadonlyMap<string, number>;
    roots: ReadonlyMap<string, {
        revision: number;
        session: RailSession;
    }>;
};
export declare function emptySessionListDirtyScopes(): SessionListDirtyScopes;
/** Unknown/new rows and audience changes require discovery, not a guessed scope. */
export declare function invalidateSessionListScopes(current: SessionListDirtyScopes, sessionIds: readonly string[] | null, sessions: ReadonlyMap<string, RailSession>): SessionListDirtyScopes;
export declare function sessionListGroupRevision(scopes: SessionListDirtyScopes, group: SessionPaginationGroup): number;