/// <reference types="webxr" />
/**
 * Gets the support state of requested session mode.
 * @param mode Session mode: 'inline' | 'immersive-vr' | 'immersive-ar'
 * @returns The current support state
 */
export declare const getXRSupportState: (mode: XRSessionMode) => Promise<'unsupported' | 'insecure' | 'blocked' | 'supported'>;