Support event namespace

[Johann-S]

It would be rad if it's possible for creators of libs to create a namespace for their events, it's well used in jQuery for example in Bootstrap.

Bootstrap Modal emit show.bs.modal event, it's allow user to be sure the show event come from the Bootstrap Modal and not an other lib or a general show event.

Currently, except jQuery I don't know an other libs which handle event namespace

See:

• https://api.jquery.com/event.namespace/
• https://getbootstrap.com/docs/4.1/components/modal/#events
• https://github.com/twbs/bootstrap/blob/v4-dev/js/src/modal.js#L47-L51

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[sindresorhus]

You can already do this. Event namespaces in this sense is just a naming convention.

[Johann-S]

Yes but it's a bit different, for example, you have a DOM element which have a listener for click.dom.element but if user made a click on this element, we should call the listener because click.dom.element listen to the click event on this element

See: https://codepen.io/Johann-S/pen/WJJQQj

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[kevva]

The difference between emittery and events emitted from the DOM is that they're global whilst events from emittery is tied to a specific instance. That's why I have a hard time seeing why this is needed.