import Camera from "./Camera";
import MediaConstraints from "./MediaConstraints";
export default class CameraBuilder {
    canvas: HTMLCanvasElement;
    mediaConstraints: MediaConstraints;
    video: HTMLVideoElement;
    get isIOSPriorTo17(): boolean;
    cameraStreamListener: (MediaStream: any) => void | null;
    constructor(mediaConstraints: MediaConstraints);
    /**
     * If the front camera is available it will try to start with the front camera
     */
    static initWithUserCamera(): CameraBuilder;
    /**
     * If the environment camera is available it will try to start with env camera
     */
    static initWithBackCamera(): CameraBuilder;
    /**
     * By passing this the function will be called every time the stream changes for any reason.
     */
    withCameraStreamListener(cameraStreamListener: (MediaStream: any) => void): CameraBuilder;
    /**
     * It will try to stream the UltraHD resolution from the camera.
     */
    pick4KResolution(): CameraBuilder;
    /**
     * It will try to stream the FullHD resolution from the camera.
     */
    pickFullHDResolution(): CameraBuilder;
    clearCachedStream(): CameraBuilder;
    /**
     *
     * @param video The HtmlVideoElement which streams the camera
     * @returns {CameraBuilder}
     */
    streamFrom(video: HTMLVideoElement): CameraBuilder;
    /**
     *
     * @param canvas The HtmlCanvasElement which the Camera object will draw the snapped picture on.
     * @returns
     */
    drawInto(canvas: HTMLCanvasElement): CameraBuilder;
    /**
     * Invoke the camera permission and return a Camera object
     */
    getCameraAsync(): Promise<Camera>;
}