component events should mask event propagation.

[mhevery]

@Component({
  selector: 'my-component'
  events: ['change']
})
@View({
  template: '<input (change)="...">'
})
class MyComponent {
} 

The above code creates an issue. It conflates the change event from the MyComponent with the bubbling change event from the <input>.

The correct behavior is that the change event which is part of the components should filter out the DOM change events. Otherwise

<my-component (change)="doSomething($event)">

will sometimes get the $event from the MyComponent and sometimes from the input event.

[zackarychapple]

Is this getting added back to a milestone? Ran into some issues around this the other day.

[ericmartinezr]

A user had the same issue in SO (the output name was renamed in the question, but initially matched the submit event from form)

[Ulrikop]

Would be cool to see a overwrite support for events, so that a intuitive usage is possible for custom event behavior.

[splincode]

@mhevery Is the issue relevant?

[foxx9]

I got caught using a (select) event emitter. ( I think a lot of people could do that "mistake" creating custom component).
Here is an example of the issue, (with (select) or(submit) emitters ):

https://stackblitz.com/edit/angular-playground-whycgq?file=app%2Fhello-framework%2Fhello-framework.component.html

So I guess it would be nice to see this as a compilation error

[Lonli-Lokli]

Does new labels mean that smth might be changed to make this work?

[AndreasHae]

Any update on this? This is causing major pain for us because it makes our custom button component prone to misuse (using the native click event instead of our own, which leads to e.g. disabled state being ignored).

[mberrezak]

If I create a custom Button Component and define my own (click) event handler, the button click event fires twice. There should be a way to overwrite it.

[stevendarby]

@JoostK Wow, so this has been an issue for a while!

Wouldn't it be good to document this somewhere? As suggested here... #49114 (comment)

Or add some kind of compiler warning or error?

What is the full list of names to avoid using?