import { type DiffFormat, type FailedLoad } from "./diff-view.js";
export interface Revision {
    id: string;
    /** Who saved it: a person, or "Opengeni" for an approved agent change. */
    author: string;
    /** When, as an ISO time. Shown as "3 days ago" with the exact time on hover. */
    createdAt?: string | undefined;
    /** Or a ready label, when there's no timestamp: "Created 18 Sep". */
    createdLabel?: string | undefined;
    /** One line: "Added: Prefer small PRs." */
    summary: string;
    /** The full text of this version. */
    content: string;
}
export type RevisionHistoryLayout = "stacked" | "split";
export interface RevisionHistoryProps {
    /** Newest first. The first one is the current version. */
    revisions: readonly Revision[];
    layout?: RevisionHistoryLayout | undefined;
    format?: DiffFormat | undefined;
    /** Restores a version by saving it again as the newest. Return a promise for the saving state. */
    onRestore?: ((revision: Revision) => void | Promise<unknown>) | undefined;
    /** Why versions can't be restored here, and who can. */
    restoreDisabledReason?: string | undefined;
    /** Which version starts open (stacked) or selected (split). Defaults to the newest. */
    defaultRevisionId?: string | undefined;
    /** The clock for "3 days ago". */
    now?: Date | undefined;
    /** Accessible name: "Workspace instructions history". */
    label?: string | undefined;
    loading?: boolean | undefined;
    /** What happened, what to do next, and an optional retry. */
    error?: FailedLoad | undefined;
    className?: string | undefined;
}
/** The text a version replaced: the one saved right before it, or nothing for the first. */
export declare function previousContent(revisions: readonly Revision[], index: number): string;
/** Every saved version of a text, what each changed, and Restore. */
export declare function RevisionHistory(props: RevisionHistoryProps): import("react").JSX.Element;