type iconMapType = {
    [key: string]: string;
};
export declare class TyFlowIconServer {
    iconMap: iconMapType;
    constructor(icons: iconMapType);
    initCache: (icons: iconMapType) => void;
    isBase64: (str: string) => boolean;
    readLocalFile(icon: string): Promise<unknown>;
    getIcon: (icon?: string) => string;
    getIconSync: (icon?: string) => Promise<unknown>;
    getIconByAtob: (base64String: string) => string;
    iconExistsChach: (icon: string) => boolean;
    getImgElByIcon({ icon, className, active, }: {
        active?: boolean;
        icon?: string;
        className?: string;
    }): string;
}
export {};