/**
 * 判断是否是 iOS 13.0 或者 iOS 16.5，此版本对 WebGL 支持有问题，需要降级
 * @returns
 */
export declare function isDowngradeIOS(): boolean;
export declare function throwError(destroyedErrorMessage: string): void;
export declare function throwErrorPromise(destroyedErrorMessage: string): Promise<never>;
export declare function handleThrowError<T>(target: T, propertyKey: string, descriptor: PropertyDescriptor): PropertyDescriptor;