Is it considered best practice to include try/catch blocks within the subscribe function in RxJs?

Imagine we have an Angular 2 application. There is a service method that returns data using post(), with a catch() statement to handle any errors.

In the component, we are subscribing to the Observable's data:

  
.subscribe(
          ()=> {
                  // some code
               } 
         )

If we need to retrieve data from localStorage or perform another critical operation, can we use a try/catch statement inside this method? Or is there a different correct approach?

Answer №1

register offers the capability to include onNext and onError parameters, however relying solely on subscribe for every side effect may not be the optimal choice. The essence of Rx is to utilize operators (such as catch, retry, etc) to address scenarios reactively, rather than just utilizing subscribe as a means to trigger callbacks.

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