Change event is not dispatched for particular keypress actions on currency mask.

[niklaushug]

Bug

Some keyboard interactions on a field with a currency mask does not dispatch a change event. Hence new values are only reflected inside the field but cannot be sended to a backend.

• If I change the value by pressing keys 0 to 9 a change event gets dispatched.
• If I change the value by pressing k, m, ArrowUp and ArrowDown NO change event gets dispatched.

At least for keyboard interactions k, m, ArrowUp and ArrowDown a change event should be triggered somewhen.

You can see this behaviour on https://replit.com/@niklaushug/inputmask-does-not-dispatch-change-event-on-certain-keypress

Version 5.0.9-beta.39, 5.0.8 and more are affected by this error. I have no evidence that type of browser or operating system is relevant.

Reason

• applyInputValue is executed before blurEvent
• applyInputValue does set undoValue to the new value
• blurEvent does only dispatch a change event if undoValue is not equal to new value

Proposed fix

Remove inputmask.undoValue = inputmask._valueGet(true); and rely on blurEvent to update undoValue.

See Pull Request 2758

Further thoughts

We may need a change event directly after keyboard interactions k, m, ArrowUp and ArrowDown, to ensure that the new value is saved even if the browser is closed before unfocus the field.