RxJS in Angular - Chapter 6 | Error Handling - Building Apps That Don't Break

The provided code snippets and explanations cover several important aspects of error handling in Angular applications, particularly when dealing with HTTP requests. Let's break down the key points:

1. Handling Errors Locally

When making an HTTP request from a component or service, you can handle errors using RxJS operators like catchError. This allows you to manage specific types of errors and provide fallback actions.

typescript
 
1import { HttpClient } from '@angular/common/http';
2import { catchError } from 'rxjs/operators';
3
4this.http.get('/api/data')
5  .pipe(
6    catchError(error => {
7      console.error('API Error:', error);
8      return throwError(() => new Error('An error occurred'));
9    })
10  )
11  .subscribe(data => this.data = data, error => console.log('Error:', error));

2. finalize Operator

The finalize operator ensures that a specific piece of code runs when the observable completes, regardless of whether it was due to success or an error.

typescript
 
1import { finalize } from 'rxjs/operators';
2
3this.isLoading = true;
4this.http.get('/api/data')
5  .pipe(
6    catchError(error => {
7      this.error = error.message;
8      return EMPTY; // Return an empty
9
10[Read the full article at DEV Community](https://dev.to/jps27cse/rxjs-in-angular-chapter-6-error-handling-building-apps-that-dont-break-4i2)
11
12---
13
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