import type { QrKeyringBridge, QrScanRequest, SerializedUR } from "./qr-keyring.mjs";
export type QrKeyringDeferredPromiseBridgeOptions = {
    /**
     * Callback invoked when a scan request is made.
     * This can be used to trigger the actual scanning process.
     */
    onScanRequested?: (request: QrScanRequest) => void;
    /**
     * Callback invoked when a scan is successfully resolved.
     * This can be used to handle the result of the scan.
     */
    onScanResolved?: (result: SerializedUR) => void;
    /**
     * Callback invoked when a scan is rejected with an error.
     * This can be used to handle errors that occur during the scan.
     */
    onScanRejected?: (error: Error) => void;
};
/**
 * A bridge that turns the scan request into a deferred promise, allowing
 * the consumer to control the resolution and rejection of the scan.
 */
export declare class QrKeyringDeferredPromiseBridge implements QrKeyringBridge {
    #private;
    constructor({ onScanRequested, onScanResolved, onScanRejected, }?: QrKeyringDeferredPromiseBridgeOptions);
    /**
     * Request a QR code scan, obtaining a CBOR and a type as response.
     *
     * @param request - The type of QR scan request.
     * @returns A promise that resolves with the scanned data as a serialized UR.
     */
    requestScan(request: QrScanRequest): Promise<SerializedUR>;
    /**
     * Resolve the pending scan with the given result.
     *
     * @param result - The scanned data as a serialized UR.
     */
    resolvePendingScan(result: SerializedUR): void;
    /**
     * Reject the pending scan with the given error.
     *
     * @param error - The error to reject the scan with.
     */
    rejectPendingScan(error: Error): void;
}
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