export interface INIconMetadata {
    size: string;
    fill: string;
    border?: string;
}
export interface INIconSet {
    [iconId: string]: INIconMetadata[];
}
export declare abstract class NFrameworkIconsFactory {
    /**
     * Create icon for specified iconId
     * @param iconSet                   icons set (namespace)
     * @returns                         promise of created icon.
     */
    abstract getIconSet(iconSet?: string): Promise<INIconSet | undefined>;
}
export declare class EmptyIconsFactory extends NFrameworkIconsFactory {
    getIconSet(iconId: string, iconSet?: string): Promise<INIconSet | undefined>;
}