Function safeDelete

spanner/system-test/spanner.test.js:281–292

(deletePromise, resourceName)

    const instance = spanner.instance(INSTANCE_ID);

    const safeDelete = async (deletePromise, resourceName) => {
      try {
        await deletePromise;
      } catch (err) {
        if (err.code !== 5) {
          console.error(
            `[WARNING] Failed to clean up ${resourceName}:`,
            err.message
          );
        }
      }
    };

    if (!INSTANCE_ALREADY_EXISTS) {
      await Promise.all([