> Hey... I want to automatically compress the script file
The trick is to write so little JS that its bandwidth usage does not even register. I'm recently going as far as to include licensing headers and extensive comments in my website JS, see e.g. <https://xyrillian.de/res/chapter-marks.js>.
I can't find a link at the moment, but there was an article on Hacker News a few years ago defending the use of plain text web pages with minimal styling. The page loaded amazingly fast, rendered well on both desktop and mobile, and had fast interactions with the page. The author had also included the full text of Moby Dick, more content than is ever served in a typical webpage. It was a fun and cheeky demonstration that it isn't the content of a webpage that results in poor performance, but all the frameworks, ad targeting, and client-side compiling of a webpage.
(Side rant: I refuse to use the term "client-side rendering", because dang it, "rendering" makes an image. "Client-side rendering" as web developers use the term doesn't actually render anything, but instead compiles the page down to HTML, which is then rendered by the browser.)
The trick is to write so little JS that its bandwidth usage does not even register. I'm recently going as far as to include licensing headers and extensive comments in my website JS, see e.g. <https://xyrillian.de/res/chapter-marks.js>.