import React from 'react';
import type { MrzReaderProps } from './MrzReaderProps';
export type CameraPermissionStatus = 'authorized' | 'not-determined' | 'denied' | 'restricted';
export type CameraPermissionRequestResult = 'authorized' | 'denied';
export declare class MrzReaderView extends React.PureComponent<MrzReaderProps> {
    private readonly ref;
    /** @internal */
    constructor(props: MrzReaderProps);
    /**
     * Gets the current Camera Permission Status. Check this before mounting the Camera to ensure
     * the user has permitted the app to use the camera.
     *
     * To actually prompt the user for camera permission, use {@linkcode MrzReaderView.requestCameraPermission | requestCameraPermission()}.
     *
     * @throws {@linkcode CameraRuntimeError} When any kind of error occured while getting the current permission status. Use the {@linkcode CameraRuntimeError.code | code} property to get the actual error
     */
    static getCameraPermissionStatus(): Promise<CameraPermissionStatus>;
    /**
     * Shows a "request permission" alert to the user, and resolves with the new camera permission status.
     *
     * If the user has previously blocked the app from using the camera, the alert will not be shown
     * and `"denied"` will be returned.
     *
     * @throws {@linkcode CameraRuntimeError} When any kind of error occured while requesting permission. Use the {@linkcode CameraRuntimeError.code | code} property to get the actual error
     */
    static requestCameraPermission(): Promise<CameraPermissionRequestResult>;
    private onMrzResult;
    private onError;
    /** @internal */
    render(): React.ReactNode;
}
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