export type LocalMediaErrorReason = "INSECURE_CONTEXT" | "NOT_SUPPORTED" | "PERMISSION_DENIED" | "DEVICE_NOT_FOUND" | "DEVICE_UNAVAILABLE" | "OPEN_FAILED" | "CONSTRAINTS_UNSUPPORTED" | "UNKNOWN";
type MediaTarget = "camera" | "microphone" | "camera-and-microphone" | "screen";
interface DisplayCaptureOptions extends DisplayMediaStreamOptions {
    video?: boolean | (MediaTrackConstraints & {
        displaySurface?: "monitor" | "window" | "application" | "browser";
        cursor?: "always" | "motion" | "never";
    });
}
export declare class LocalMediaError extends Error {
    readonly reason: LocalMediaErrorReason;
    readonly errorName: string;
    constructor(reason: LocalMediaErrorReason, errorName: string, target: MediaTarget);
}
export declare function openUserMedia(constraints: MediaStreamConstraints): Promise<MediaStream>;
export declare function acquireLocalMedia(options: {
    constraints: MediaStreamConstraints;
    fallbackConstraints?: MediaStreamConstraints;
    displayMedia?: DisplayCaptureOptions;
    allowAudioFallback?: boolean;
}): Promise<MediaStream>;
export {};