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Isaac Salier-Hellendag
47b147f392
If there are no listeners for `onSelect` yet, do not extract events. This way we can avoid issues where listeners have been set up for some event dependencies for `SelectEventPlugin`, but not all. For instance, if `topMouseDown` has been registered but not `topMouseUp`, event extraction will set the `mouseDown` flag to true but never unset it. This leads to bugs when `onSelect` is registered and should be firing during normal key behavior. Since no `topMouseUp` has yet occurred to unset the flag, `onSelect` fails to fire.