diff --git a/src/legacy/ui/public/url/kbn_url.d.ts b/src/legacy/ui/public/url/kbn_url.ts
similarity index 100%
rename from src/legacy/ui/public/url/kbn_url.d.ts
rename to src/legacy/ui/public/url/kbn_url.ts
diff --git a/src/legacy/ui/public/vis/vis_types/vis_type.d.ts b/src/legacy/ui/public/vis/vis_types/vis_type.ts
similarity index 97%
rename from src/legacy/ui/public/vis/vis_types/vis_type.d.ts
rename to src/legacy/ui/public/vis/vis_types/vis_type.ts
index 92641c31040d6..96d25e2858e2a 100644
--- a/src/legacy/ui/public/vis/vis_types/vis_type.d.ts
+++ b/src/legacy/ui/public/vis/vis_types/vis_type.ts
@@ -21,7 +21,7 @@ import { IconType } from '@elastic/eui';
 import { RequestHandler, ResponseHandler, Vis } from '..';
 import { Status } from '../update_status';
 
-export class VisualizationController {
+export declare class VisualizationController {
   constructor(element: HTMLElement, vis: Vis);
   public render(visData: any, visParams: any, update: { [key in Status]: boolean }): Promise<void>;
   public destroy(): void;