MILAB-3078: drivers: download: big files fix

Author: Snyssfx

.changeset/slick-dots-obey.md

@@ -0,0 +1,5 @@
+---
+'@milaboratories/pl-drivers': patch
+---
+
+drivers: download: fix big files downloading

lib/node/pl-drivers/src/drivers/download_blob/download_blob_task.ts

@@ -73,7 +73,12 @@ export class DownloadBlobTask {
     }
   }
 
-  private async ensureDownloaded() {
+  /**
+   * If the blob is downloaded, just returns it's size.
+   * If the blob is not downloaded, downloads it, writes it to the disk atomically and returns the size.
+   * Has a signal to cancel the task and a state to print it if something goes wrong.
+   */
+  private async ensureDownloaded(): Promise<number> {
     this.signalCtl.signal.throwIfAborted();
 
     this.state = {};