export declare function getPixelRatio(): number;
export declare const canUseBOM: boolean;
export declare function isIOS(): boolean;
export declare function isIOSByUA(): number;
export declare function isAndroid(): boolean;
export declare function isOpenHarmony(): boolean;
export declare function isSimulatorCellPhone(): boolean;
export declare function isMiniProgram(): boolean;
export declare function isAlipayMiniApp(): boolean;
export declare function isWechatMiniApp(): boolean;