React Native - [unhandled Promise Rejection: Error: Signup Error]

I get this intentional error because I'm using the same email to register. It says I'm not handling the rejection; can someone explain why because I have a .catch() which should ca

Solution 1:

I'm not 100% sure of this since i'm used to try catch, but it could be because you are not actually handling the promise rejection:

in your then

  .then((res) => {
            if (!res.ok) {
              thrownewError("Signup Error");
            } else {
              const resData = res.json();
              return resData;
            }
          }, (reject) => {
             // handle this
          })

Solution 2:

dispatch is a synchronous method in redux and in try catch you used async await which is asynchronous what you can do is adding a asynchronous dispatch middleware to your redux store

constasyncDispatchMiddleware = (store) => (next) =>(action) => {
  let syncActivityFinished = false;
  let actionQueue = [];

  functionflushQueue() {
    actionQueue.forEach((a) => store.dispatch(a)); // flush queue
    actionQueue = [];
  }

  functionasyncDispatch(asyncAction) {
    actionQueue = actionQueue.concat([asyncAction]);

    if (syncActivityFinished) {
      flushQueue();
    }
  }

  const actionWithAsyncDispatch = Object.assign({}, action, { asyncDispatch });

  next(actionWithAsyncDispatch);
  syncActivityFinished = true;
  flushQueue();
};

now you can make in promise scheme the asyncDispatch method