import { ScanQrPopupParams } from '../sdk';
import { BotApiVersion, Merge, SchemaBase, SinceLatest, SinceUntil } from '../types';
import { onQrTextReceived, onScanQrPopupClosed } from '../events';
type v64 = ReturnType<typeof useQrScanner64>;
type v77 = ReturnType<typeof useQrScanner77>;
type AllFeatures = v64 & v77;
export type Schema = {
    '6.0': SchemaBase<AllFeatures, object>;
    '6.4': Merge<Schema['6.0'], v64>;
    '7.7': Merge<Schema['6.4'], v77>;
};
export type QrScanner = SinceUntil<Schema, '6.0', '6.4'> | SinceUntil<Schema, '6.4', '7.7'> | SinceLatest<Schema, '7.7'>;
declare function useQrScanner64(): {
    show: {
        (params: ScanQrPopupParams): Promise<string>;
        (params: ScanQrPopupParams, callback?: ((text: string) => void) | undefined): void;
    };
    close: () => void;
    onScan: typeof onQrTextReceived;
};
declare function useQrScanner77(): {
    onClose: typeof onScanQrPopupClosed;
};
export declare function useQrScanner<Version extends BotApiVersion>(baseVersion: Version): import('../types').VersionedReturnType<QrScanner, Version, keyof Schema>;
export {};