Angular · Middle · Question 52 of 75

How do you get a single value from an Observable with `async/await`?

const user = await firstValueFrom(this.http.get<User>('/api/me'));

✓Correct answer: With firstValueFrom (or lastValueFrom) from RxJS
2With await observable
3With observable.toPromise() - the recommended modern API

Explanation

toPromise() is deprecated. firstValueFrom resolves on the first value and unsubscribes; it rejects if the stream completes without values.

Further reading

RxJS API: firstValueFrom ↗

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