map<U> method

Future<NEResult<U>> map<U>(
  1. FutureOr mapper(
    1. T
    )
)

Implementation

Future<NEResult<U>> map<U>(FutureOr Function(T) mapper) {
  return then<NEResult<U>>((value) async {
    if (value.isSuccess()) {
      try {
        final next = await mapper(value.nonNullData);
        if (next is NEResult) {
          return next as NEResult<U>;
        } else {
          return NEResult<U>.successWith(next as U);
        }
      } catch (e, _) {
        assert(() {
          throw e;
        }());
        return NEResult<U>(code: -1, msg: e.toString());
      }
    } else {
      return NEResult<U>(
          code: value.code,
          msg: value.msg,
          requestId: value.requestId,
          cost: value.cost);
    }
  });
}