Feature request: no output named after a standard DOM event

[gbilodeau]

Naming a custom directive output after a standard DOM event can cause unwanted behaviour because of event bubbling. As explained clearly here, declaring a listener for a custom directive output with a "submit" name will be invoked not only when this output emits a new value but also when a native "submit" event bubbles up from a possible descendant form.

This issue has also been discussed here, resulting in a statement that this behaviour is just "common sense". Since common sense isn't necessarily obvious to new users of the framework, it would be useful to create a rule that highlights such a naming practice error.

There are no guidelines with regards to this in the Angular style guide.

PR will follow.