concatting JS libraries into your own JS payload is a debatable practice. If it's a popular library, the user likely has it cached already and so the request to

concatting JS libraries into your own JS payload is a debatable practice. If it's a popular library, the user likely has it cached already and so the request to get it takes a few milliseconds. Where as your own JS payload will change with every release, forcing them to always re-download the same library code.