Vite's HMR API: Manually Controlling Hot Reloads
Vite's HMR API lets a module handle code changes without a full reload. While frameworks usually manage this, you can use it for custom tooling. The footgun: forgetting to wrap HMR code in `if (import.meta.hot)` will crash your production build.
Vite's HMR API gives you manual control over how a module reacts to code changes, avoiding a full page reload. It's like giving a component a direct line to the dev server to receive live updates. While most app developers rely on their framework's built-in HMR, this API is crucial for tool and framework authors to create that seamless experience. The biggest footgun is shipping HMR code to production; always guard it with an `if (import.meta.hot)` check to ensure it's tree-shaken.
Read the original → vite.dev
- #vite
- #hmr
- #tooling
- #frontend
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