Removing styles after transition completes

I'm using react motion for view transitions and I'm running into problems where the styling needed for my transitions (a mix of transform and opacity) interferes with my child component styling and after the transitions there's really no use for the transitions styles anyway, so I would like to remove them after the animation has completed.

Is there a good pattern for that currently? Something simmilar to `[clearprops](http://greensock.com/docs/#/HTML5/GSAP/Plugins/CSSPlugin/)` in GSAP would be ideal. Is it possible?

No file or test is named. Start by tracing how React Motion applies transform and opacity during view transitions and where completion is exposed; done means a documented pattern or API removes those transition styles after animation without interfering with child component styling.

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