Pass through UUIDs that are already stringy (#282)

Author: bhollis

api/stately/stately-utils.test.ts

@@ -160,4 +160,9 @@ describe('fromStatelyUUID', () => {
   it('converts a Stately UUID to a string', () => {
     expect(fromStatelyUUID('_XBlcIuJTLCITKFKCQEJPQ')).toBe('fd706570-8b89-4cb0-884c-a14a0901093d');
   });
+  it('passes through a string UUID', () => {
+    expect(fromStatelyUUID('fd706570-8b89-4cb0-884c-a14a0901093d')).toBe(
+      'fd706570-8b89-4cb0-884c-a14a0901093d',
+    );
+  });
 });

api/stately/stately-utils.ts

@@ -158,7 +158,12 @@ export function parseKeyPath(keyPath: string): { ns: string; id: string }[] {
     });
 }
 
+/** Convert a UUID from a Stately key path into a string-form UUID. */
 export function fromStatelyUUID(id: string): string {
+  if (id.match(/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i)) {
+    // It's already in that format
+    return id;
+  }
   const bytes = Buffer.from(id, 'base64');
   return stringifyUUID(new Uint8Array(bytes));
 }