Merge pull request #56 from code-kern-ai/hotfix-download-from-s3

Adds s3 download hotfix

Author: JWittmeyer

src/services/base/s3-service.ts

@@ -69,14 +69,23 @@ export function downloadFile(credentialBlock: any, isStringData: boolean = true)
     return new Observable((subscriber) => {
         s3Client.send(new GetObjectCommand(getParams)).then(data => {
             const bodyContents = data.Body;
+
             if (isStringData && bodyContents instanceof ReadableStream) {
                 const reader = bodyContents.getReader();
                 reader.read().then(({ done, value }) => {
                     const objectData = new TextDecoder('utf-8').decode(value);
                     subscriber.next(objectData);
                 });
             } else {
-                subscriber.next(bodyContents);
+                //new sdk can return readableStream or blob 
+                if (bodyContents instanceof ReadableStream) {
+                    bodyContents.transformToByteArray().then((data) => {
+                        subscriber.next(new Blob([data]));
+                    })
+                }
+                else {
+                    subscriber.next(bodyContents);
+                }
             }
         }).catch(err => {
             subscriber.error(null);