Function isStorageError

packages/core/sdk/src/connections.test.ts:1233–1234

(u: unknown)

      expect(failure.message).toContain("stranded");
      // The original write failure is retained as the cause, not replaced.
      const isStorageError = (u: unknown): u is StorageError =>
        Predicate.isTagged("StorageError")(u);
      expect(isStorageError(failure.cause)).toBe(true);
      if (!isStorageError(failure.cause)) return;
      expect(failure.cause.message).toBe("provider write refused");