How to increase CSS-in-JS performance by 175x

I like the convenience of CSS-in-JS especially being able to co-locate styling and improving ease-of-use when using 3rd party components. But I’m not convinced on a few of things: That hashed classes are a “must have” instead of namespaced ones, and could even be a hindrance when needing to select elements from 3rd party components, marketing, and testing suites.That using logic in your CSS is nec