Thanks for the thorough reply! I confess I wasn't thinking about a particular build tool. My recent experience has been with Vite, where I took a similar appro

Thanks for the thorough reply! I confess I wasn't thinking about a particular build tool. My recent experience has been with Vite, where I took a similar approach to what you describe, but haven't had to dig deep into bundle performance because that's not a bottleneck for our application. The last time I did deeper work on the subject was years ago with Webpack. I thought Webpack at least did dead-code elimination before splitting things into chunks. If I'm reading this random GitHub issue[1] right (and the asker is also right), Webpack does partially behave as I expected, but the pre-chunking optimization pass occurs before things like constant expression evaluation. [1] https://github.com/webpack/webpack/issues/16672 https://github.com/webpack/webpack/issues/16672