What is the relation between onError and ErrorBoundary?

[zhaoyao91]

At first I didn't make any error handling, when something occurs, the app stucks.

I found onError and ErrorBoundary mentioned in the doc, but what is the relation between them and which one should be used in which situation?

[ryansolid]

I probably recommend using ErrorBoundary if it fits your use case since it handles unmounting of children. It uses onError internally but the benefit of ErrorBoundary is it ensures children are all resolved up to that point. With onError it is possible for children contexts to get passed out of the creator upwards and escape it. onError is the lower level primitive and is ok generally higher up in the render tree for logging things but ErrorBoundary is more suited for managing the view. I mostly provide onError in case someone wishes to implement their own ErrorBoundary different than I have created.