Transition group with multiple classes as move-class not working

[jonaskuske]

Version

3.0.0-alpha.4

Reproduction link

https://codepen.io/21stCenturyJonas/pen/xxboELY?editors=1011

Steps to reproduce

1. Set the move-class prop on <transitition-group> to multiple classes, separated by spaces:

<transition-group move-class="transition-transform duration-300 ease-in-out">

2. Start a transitition by changing the order

What is expected?

The classes should be applied.

What is actually happening?

DOMExecption, as tokens passed to classList.add() mustn't contain spaces.

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This is the same issue as #638 – but the fix there only handles multiple enter and leave classes, not move classes that are added as part of hasCSSTransform() in TransitionGroup.ts.

I'll provide a PR shortly.