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A full browser reload on every save, instead of the instant update Vite promised.
What you'll have at the end
The dev server's terminal logging hmr update instead of a full reload the next time you save a file
You need
A Vite dev server already running against a small vanilla JavaScript project split into a few files that import each other.
Not covered
Wiring HMR for a UI framework's own components, since those frameworks handle self-accepting for you and need a different kind of fix.
Checked 21 Aug 2026
Part of the Vite cookbook