How to obfuscate third-party library classes?

Question

webpack

Setting up CSS modules
And I have a question.
Some libraries modify the DOM directly, like adding style attributes or classes.
How to minify classes that are added from outside?
Example

<div class="sdfRf">
// after js triggered
<div class="jsLibClassName sdfRf" style="color: red;...">

Is there any universal way, or does each one either need to be added, re-picked?