import { Option } from "effect";
import { Prompt } from "effect/unstable/ai";
declare const sessionTranscriptCursor: (projection: ReadonlyArray<Prompt.Message>, transcript: ReadonlyArray<Prompt.Message>) => Option.Option<number>;
declare const isAppendOnlyDescendant: (ancestor: Prompt.Prompt, descendant: Prompt.Prompt) => boolean;
/** @internal Session/Prompt reconciliation shared by the compaction runtime. */
export declare const SessionSyncInternals: {
    sessionTranscriptCursor: typeof sessionTranscriptCursor;
    isAppendOnlyDescendant: typeof isAppendOnlyDescendant;
};
export {};