fix: api -> no optional

Signed-off-by: Akos Kitta <[email protected]>

Author: Akos Kitta

arduino-ide-extension/src/browser/contributions/sketchbook.ts

@@ -61,7 +61,7 @@ export class Sketchbook extends Examples {
       .then(({ container, sketchesInInvalidFolder }) => {
         if (
           raiseInvalidSketchFoldersWarning &&
-          sketchesInInvalidFolder?.length
+          sketchesInInvalidFolder.length
         ) {
           Promise.all(
             sketchesInInvalidFolder.map(async (ref) => {

arduino-ide-extension/src/common/protocol/sketches-service.ts

@@ -38,7 +38,7 @@ export interface SketchesService {
    */
   getSketches({ uri }: { uri?: string }): Promise<{
     container: SketchContainer;
-    sketchesInInvalidFolder?: SketchRef[];
+    sketchesInInvalidFolder: SketchRef[];
   }>;
 
   /**