adding data in firebase firestore React - reactjs

Question

I have singUp function. I successfuly create a new user in Authentication section. After that I can even get his uid. But I have no idea why setting a new document in collection user function doesn't work. Like it would be never start.. Even .then() or .catch() methods doesn't show their console.log(). I am using almost the same code in another project and everything is fine there.
export const signUp = (newUser) => {
return (dispatch, getState) => {
firebase.firestore().collection('users').where('nick', '==', newUser.nick).get()
.then(snapshot => {
if (snapshot.empty) {
firebase.auth().createUserWithEmailAndPassword(
newUser.email,
newUser.password
).then((resp) => {
console.log(resp)
console.log(resp.user.uid)
firebase.firestore().collection("users").doc(resp.user.uid).set({
name: newUser.name,
age: newUser.age
}).then(function () {
console.log("Document successfully written!");
}).catch(function (error) {
console.error("Error writing document: ", error);
});
}).then(() => {
dispatch({ type: "SIGNUP_SUCCESS" });
}).catch((err) => {
console.log(err)
let error;
if (err.code === 'auth/email-already-in-use')
error = 'Adres e-mail jest już w użyciu!'
dispatch({ type: "SIGNUP_ERROR", error })
})
} else {
let error = 'Ten nick jest już zajęty!'
dispatch({ type: "SIGNUP_ERROR", error })
}
})
}
}
And my console :

Answer 1

You need to return the promise from setting the user's collection as follows:
export const signUp = (newUser) => {
return (dispatch, getState) => {
firebase.firestore().collection('users').where('nick', '==', newUser.nick).get()
.then(snapshot => {
if (snapshot.empty) {
firebase.auth().createUserWithEmailAndPassword(
newUser.email,
newUser.password
).then((resp) => {
console.log(resp)
console.log(resp.user.uid)
// ******* add the return statement here *******
return firebase.firestore().collection("users").doc(resp.user.uid).set({
name: newUser.name,
age: newUser.age
}).then(function () {
console.log("Document successfully written!");
}).catch(function (error) {
console.error("Error writing document: ", error);
});
}).then(() => {
dispatch({ type: "SIGNUP_SUCCESS" });
}).catch((err) => {
console.log(err)
let error;
if (err.code === 'auth/email-already-in-use')
error = 'Adres e-mail jest już w użyciu!'
dispatch({ type: "SIGNUP_ERROR", error })
})
} else {
let error = 'Ten nick jest już zajęty!'
dispatch({ type: "SIGNUP_ERROR", error })
}
})
}
}