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Visualizaçõesconsole log of returned value shows a unusable response even after chaining a then to it
Im trying to return a promise is a javascript file. However, there is a weird issue. So when I console log the returned value within the function, it shows the following:
const id = getAccounts()
.then(res => res.find(acc => acc.type === ACCOUNT_TYPES.STARTER))
.then((res) => { return res.id });
console.log(id.then(res => res))
Is there anything I am missing? Have been dealing with this and research for the whole day. If anyone can help, I would highly appreciate it!
Updated section:
const initialState = {
currentAccountId: id.then((res) => { return res; }) || ''
};
1 Respostas
Responde à pergunta0
The return value of calling a Promise's .then is always another Promise. By setting currentAccountId to id.then, it will always be a Promise.
You need to call this.setState from inside the Promise's resolve function:
componentDidMount() {
getAccounts()
.then(res => res.find(acc => acc.type === ACCOUNT_TYPES.STARTER))
.then((res) => { this.setState({ currentAccountId: res }); });
}
Use componentDidMount, like the React docs suggest, to initiate an async request. "If you need to load data from a remote endpoint, this is a good place to instantiate the network request."
Original answer
id.then will always return a new Promise, and that's what you are logging. To log the actual value you can move the console.log inside the resolve function:
id.then(res => console.log(res))