Components should emit consistent events

[Michael Gaigg]

At a minimum emit event.detail with attributes like value or checked, e.g. SelectMenu change event has event.detail.value but Checkbox change event does not transmit event.detail

[Tom Lowry]

Open to PRs on this if you have a use case where this is useful to you. In most cases cases I have just done this with Svelte's reactive declarations with values on those elements bound to variables.

Something like this

let menuItems = [{},{}];
let selectedItem;
$: selectedItem, functionName(); //run this when selectedItem changes

<SelectMenu bind:menuItems={menuItems} bind:value={selectedItem}/>