import type { RunOpts } from "./types.js";
/** A history entry. `key` stays on replace and is new on push. */
export type HistoryEntry = {
    index: number;
    key: string;
};
export type HistorySpecs = {
    /** The spec for a run that just changed the history entry. `spec` is what the run would use without autoReverse. */
    pick(spec: RunOpts): RunOpts;
};
export declare function createHistorySpecs(getEntry?: () => HistoryEntry | undefined): HistorySpecs;
/** One store per document, shared by every handle. */
export declare const historySpecs: HistorySpecs;