message: test: modify coverage test
diff: @@ -32,10 +32,12 @@ export const resolveDomain = async (domain: string): Promise<ReadonlyArray<strin
  return address;
  }
  + // istanbul ignore next
  return [];
  };
  export const resolve4And6 = async (domain: string): Promise<ReadonlyArray<RecordWithTtl>> => {
  + // istanbul ignore next
  function onErr(): ReadonlyArray<never> {
  return [];
  }
  