I seem to remember that happened with JSON, but I assume it is now low level code. Since service workers are now commonplace, it would be more helpful to someh

I seem to remember that happened with JSON, but I assume it is now low level code. Since service workers are now commonplace, it would be more helpful to somehow share the caching of commonly used libraries, so once downloaded in one place the browser would let it serve for another. Not sure how it could work, but would need to ensure the libs were identical. Maybe by use of a hash? Mmm ..