import { EduRoleTypeEnum, EduRoomTypeEnum } from '..';
export declare const EduRole2RteRole: (roomType: EduRoomTypeEnum, roleType: EduRoleTypeEnum) => "host" | "assistant" | "broadcaster" | "invisible" | "observer" | "audience";
export declare const RteRole2EduRole: (roomType: EduRoomTypeEnum, role: string) => EduRoleTypeEnum;
export declare const number2Percent: (v: number, fixed?: number) => string;
export declare const CustomBtoa: (input: any) => string;
export declare enum DevicePlatform {
    WEB = 1,
    MACOS = 2,
    WINDOWS = 3,
    IOS = 4,
    ANDROID = 5,
    H5 = 6
}
export declare class UUAparser {
    private static _userAgent;
    private static _UAParserInstance;
    static get getType(): string | undefined;
    static get mobileBrowser(): boolean;
}
export declare const getPlatform: () => DevicePlatform.WEB | DevicePlatform.MACOS | DevicePlatform.WINDOWS | DevicePlatform.H5;
export declare function getImageSize(file: File): Promise<{
    width: number;
    height: number;
}>;