They do, it's linked in the blog: https://blog.mozilla.org/javascript/2017/12/12/javascript-startup-bytecode-cache/ https://blog.mozilla.org/javascript/2017/12

They do, it's linked in the blog: https://blog.mozilla.org/javascript/2017/12/12/javascript-startup-bytecode-cache/ https://blog.mozilla.org/javascript/2017/12/12/javascript-st... https://bugs.webkit.org/show_bug.cgi?id=192782 https://bugs.webkit.org/show_bug.cgi?id=192782 Also did you mean http caching? Not sure why would want to remove that. It's still important for the browser to get the latest script content before the bytecode caching happens.