Add Attachment.removeSchemaVersion

js/modules/types/attachment.js

@@ -176,6 +176,12 @@ exports._replaceUnicodeOrderOverridesSync = (attachment) => {
 exports.replaceUnicodeOrderOverrides = async attachment =>
   exports._replaceUnicodeOrderOverridesSync(attachment);
 
+exports.removeSchemaVersion = async (attachment) => {
+  const attachmentWithoutSchemaVersion = Object.assign({}, attachment);
+  delete attachmentWithoutSchemaVersion.schemaVersion;
+  return attachmentWithoutSchemaVersion;
+};
+
 // Public API
 const toVersion1 = exports.withSchemaVersion(1, autoOrientJPEG);
 const toVersion2 = exports.withSchemaVersion(2, exports.replaceUnicodeOrderOverrides);

test/modules/types/attachment_test.js

@@ -243,4 +243,26 @@ describe('Attachment', () => {
       }
     );
   });
+
+  describe('removeSchemaVersion', () => {
+    it('should remove existing schema version', async () => {
+      const input = {
+        contentType: 'image/jpeg',
+        data: null,
+        fileName: 'foo.jpg',
+        size: 1111,
+        schemaVersion: 1,
+      };
+
+      const expected = {
+        contentType: 'image/jpeg',
+        data: null,
+        fileName: 'foo.jpg',
+        size: 1111,
+      };
+
+      const actual = await Attachment.removeSchemaVersion(input);
+      assert.deepEqual(actual, expected);
+    });
+  });
 });