Subscribe is deprecated: Use an observer instead of an error callback
subscribe
isn't deprecated, only the variant you're using is deprecated. In the future, subscribe
will only take one argument: either the next
handler (a function) or an observer object.
So in your case you should use:
.subscribe({
next: this.handleUpdateResponse.bind(this),
error: this.handleError.bind(this)
});
See these GitHub issues:
https://github.com/ReactiveX/rxjs/pull/4202
https://github.com/ReactiveX/rxjs/issues/4159
Maybe interesting to note that the observer
Object can also (still) contain the complete()
method and other, additional properties. Example:
.subscribe({
complete: () => { ... }, // completeHandler
error: () => { ... }, // errorHandler
next: () => { ... }, // nextHandler
someOtherProperty: 42
});
This way it is much easier to omit certain methods. With the old signature it was necessary to supply undefined
and stick to the order of arguments. Now it's much clearer when for instance only supplying a next and complete handler.