this is a duplicate issue from a lighthouse ticket, with the relevant comment being:
An upcoming revamp of ajax.js should/will include making the requests dispatch custom events and deprecating Ajax.Responders.
We can keep current responders alive (maybe in a separate plugin) for backwards compatibility. These would just be listening for custom events on the document.
As this should be deprecated, we should no longer be modifying or adding to its API.
However, this is still an issue for me, and imho is a bug, as it is quite important to globally listen for onFailure events
this is a duplicate issue from a lighthouse ticket, with the relevant comment being:
However, this is still an issue for me, and imho is a bug, as it is quite important to globally listen for
onFailure
events