I made Tamagui a hybrid of compile and runtime, where the optimizing compiler actually handles object spreads, conditional logic, and even cross-module imports. It's really nice to get the near-0-runtime performance while maintaining all the benefits of dynamic styles.
We're continuing to work on optimisations for StyleX, and I'll be looking at Tamagui for inspiration!
"Since StyleX depends on ahead-of-time compilation, it is important for all your styles to be statically analyzable"
"No runtime style injection."
"All styles are bundled in a static CSS file at compile-time."
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By dynamic styles I assume we're talking about something like this:
{ backgroundColor: props.thirdPartyColor ?? randomColor() }