We have a single bundle of JavaScript with all our helper functions, then a page specific bundle that uses some of the helper functions. The same helper functi

We have a single bundle of JavaScript with all our helper functions, then a page specific bundle that uses some of the helper functions. The same helper function bundle is delivered to all pages--not a different tree-shaken version delivered to each page that only has the functions used by that page. One helper function bundle is bigger, but since every page gets it, this bundle is code cached.