ESLint rule to prevent `connectObservable` and `connectFactoryObservable` being used inside components

I think that a common pitfall that new-comers will experience is that they may inadvertently use connectObservable/connectFactoryObservable from inside a functional component.

I think that we should create a ESLint rule so that developers don’t fall for that mistake. Any volunteers? cough @voliva cough

I think that as a first implementation something that just checks that the connector functions are being called from the “root scope” (not inside a function) should be enough? 🤔

Also, I think that the ESLint rule should be an error, not a warning.

[voliva]

Sure, I’ll give it a go this afternoon!

[josepot]

I’m closing this issue, let’s continue the conversation in that PR/repo. Once again, thanks a lot @voliva !