Log warning if compressionQuality outside of range

Author: dlarocque

packages/vertexai/src/requests/imagen-image-format.ts

@@ -15,6 +15,8 @@
  * limitations under the License.
  */
 
+import { logger } from "../logger";
+
 export class ImagenImageFormat {
   mimeType: string;
   compressionQuality?: number;
@@ -24,6 +26,9 @@ export class ImagenImageFormat {
   }
 
   static jpeg(compressionQuality?: number): ImagenImageFormat {
+    if (compressionQuality && (compressionQuality < 0 || compressionQuality > 100)) {
+      logger.warn(`Invalid JPEG compression quality of ${compressionQuality} specified; the supported range is [0, 100].`);
+    }
     return { mimeType: 'image/jpeg', compressionQuality };
   }