The "Canonical Reducer Composition" validator checks every action object and throws if a name property is missing. But redux uses another convention – it uses type, not name, so no action object has a proper name in it by default.

The core @@redux/INIT action is worked around and ignored in redux-immutable, but the redux-devtools use another action called @@INIT which isn't.

I'm not sure if this is an issue of redux-immutable or the redux itself, but hopefully you guys will figure it out. CC @gajus @gaearon

For now I'm willing to uninstall redux-immutable rather than redux-devtools (until the issue is fixed somehow).