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Discover how to keep state while editing Vite modules by adding custom HMR logic with import.meta.hot. Learn the steps, diagnostics, and recovery options for a smooth dev experience.
Stop waiting for bundles to rebuild. Learn how Vite uses Native ESM and esbuild pre-bundling to decouple the module graph from the reload cycle for near-instant HMR.
Discover how Vite eliminates slow cold starts by leveraging native ES Modules (ESM) to serve code without bundling during development.
Learn how to use Vite's HMR API to update modules while keeping UI state intact, with example code, verification steps, and recovery tips.
Learn how to implement custom Hot Module Replacement (HMR) in Vite to prevent full page reloads and preserve application state during development.
Learn how to use the import.meta.hot API in Vite to create HMR boundaries, prevent full page reloads, and properly clean up side effects during development.
Get a Vite dev server running, prove HMR actually works via the WebSocket check, and fix the common Docker/reverse-proxy cases where hot reload silently fails.
Vitest’s default watch mode launches a Vite dev server, giving tests instant HMR feedback without extra configuration.
Stop waiting for full page reloads. Learn how Vite uses native ES Modules to decouple the module graph and enable lightning-fast Hot Module Replacement.
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