export type SidebarLayout = {
    containerId: string;
    itemIds: string[];
    revision: number;
};
export declare class SidebarLayoutConflictError extends Error {
    readonly current: SidebarLayout;
    constructor(current: SidebarLayout);
}
export declare function getSidebarLayout(containerId: string): SidebarLayout;
export declare function replaceSidebarLayout(containerId: string, itemIds: string[], expectedRevision: number): SidebarLayout;
export declare function sortBySidebarLayout<T>(items: T[], layout: SidebarLayout, idOf: (item: T) => string): T[];