@zvictor, thanks for the PR.
I have an idea of how to support the custom serializers, will need some time to get back to it. But meanwhile, I am approving this PR.

@igor-dv is there anything you need help with?
maybe you could try explaining your idea so the community can give it a try.

given that the mentioned jest-specific-snapshot is crucial in my setup, I would be willing to spend some time digging into it.

This plugin is a bit "hacky". It overrides the toMatchSnapshot method from the jest-snapshot package directly. After that, the regular way of adding serializers stopped to work. Looks like the jest's serializers collection have another instance during the test than the one used in the overridden plugin. So what I wanted to do is just to provide the way to add serializers for this plugin separately by exposing the addSerializer method from the jest-snapshot package as well. Surely it's not a perfect solution - but a workaround. I didn't have time to check this. Of course, you are welcome to take a look!