18874: Add 'services/workbench2/' from commit 'f6f88d9ca9cdeeeebfadcfe999789bfb9f69e5c6'

[arvados.git] / services / workbench2 / src / common / file.ts

diff --git a/services/workbench2/src/common/file.ts b/services/workbench2/src/common/file.ts
new file mode 100644 (file)
index 0000000..2311399
--- /dev/null
+++ b/services/workbench2/src/common/file.ts
@@ -0,0 +1,15 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+export const fileToArrayBuffer = (file: File) =>
+    new Promise<ArrayBuffer>((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = () => {
+            resolve(reader.result as ArrayBuffer);
+        };
+        reader.onerror = () => {
+            reject();
+        };
+        reader.readAsArrayBuffer(file);
+    });