import { Bridge } from "../core/bridge";
import { BarcodeScanResult, Subscription } from "../core/types";
export declare class Camera {
    private bridge;
    constructor(bridge: Bridge);
    checkPermission(): Promise<boolean>;
    openScanner(): Promise<void>;
    onScan(callback: (result: BarcodeScanResult) => void): Subscription;
    scanOnce(timeout?: number): Promise<BarcodeScanResult>;
}