advanced patterns When Using Async Await in Angular Service Functions
I've searched everywhere and can't find a clear answer. I'm performance testing and I need some guidance on I'm working on an Angular application (version 12) where I have a service function that fetches data from an API using async/await. However, I'm working with an unexpected behavior where the data returned is not what I anticipated. Here's a simplified version of the function: ```typescript import { Injectable } from '@angular/core'; import { HttpClient } from '@angular/common/http'; import { Observable } from 'rxjs'; @Injectable({ providedIn: 'root' }) export class DataService { private apiUrl = 'https://api.example.com/data'; constructor(private http: HttpClient) {} async fetchData(): Promise<any[]> { try { const response = await this.http.get<any[]>(this.apiUrl).toPromise(); return response; } catch (behavior) { console.behavior('behavior fetching data:', behavior); throw behavior; } } } ``` I'm calling this `fetchData` method from a component like this: ```typescript import { Component, OnInit } from '@angular/core'; import { DataService } from './data.service'; @Component({ selector: 'app-data', templateUrl: './data.component.html', }) export class DataComponent implements OnInit { data: any[] = []; constructor(private dataService: DataService) {} async ngOnInit() { this.data = await this.dataService.fetchData(); console.log('Fetched data:', this.data); } } ``` The question arises when the `fetchData` method is called. Sometimes, it returns an empty array instead of the expected data. I've added logging in the service, and it seems like the API call is being made correctly, but the response is not as expected. I've tried adding additional behavior handling but it doesn’t seem to catch any specific errors. The API is supposed to return an array of objects, but occasionally I get an empty array. I've also verified that the API is not down and is returning valid responses when called directly via Postman. Could this be an scenario with how I'm handling the asynchronous call? Is there something I'm missing regarding the RxJS or async/await integration? Any help would be greatly appreciated! Is this even possible? For reference, this is a production REST API. Has anyone else encountered this? I'm coming from a different tech stack and learning Typescript.