import { BotApiVersion, Merge, SchemaBase, SinceLatest, SinceUntil } from '../types';
import { onBackButtonClicked } from '../events';
type v60 = ReturnType<typeof useBackButton60>;
type v61 = ReturnType<typeof useBackButton61>;
type AllFeatures = v61;
export type Schema = {
    '6.0': SchemaBase<AllFeatures, v60>;
    '6.1': Merge<Schema['6.0'], v61>;
};
export type BackButton = SinceUntil<Schema, '6.0', '6.1'> | SinceLatest<Schema, '6.1'>;
declare function useBackButton60(): {
    isVisible: Readonly<import('vue').Ref<boolean, boolean>>;
};
declare function useBackButton61(): {
    isVisible: import('vue').WritableComputedRef<boolean, boolean>;
    show: () => void;
    hide: () => void;
    onClick: typeof onBackButtonClicked;
};
export declare function useBackButton<Version extends BotApiVersion>(baseVersion: Version): import('../types').VersionedReturnType<BackButton, Version, keyof Schema>;
export {};