export declare class ImageUrlHelper {
    static readonly defaultImageId = "defaultImage";
    static readonly defaultImageSource = "/assets/common/images/configure/defaultImage.png";
    private static readonly getDiagramImageMethodPath;
    private static readonly idQueryStringPrefix;
    private static readonly typeQueryStringPrefix;
    private static getDiagramImageUrlPrefix;
    static buildImageUrl(imageId: string, imageType?: string): string;
    static getImageId(sourceUrl: string): string;
    static getImageType(sourceUrl: string): string;
    /**
     * Used to format old image url to new url format(in designer view)
     * @param sourceUrl : orignal old image url
     */
    static formatDesignerImageUrl(sourceUrl: string): string;
    private static getImageIdIndex;
    private static getImageTypeIndex;
}