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+---
+layout: ../../layouts/content.astro
+title: Hot Module Replacement (HMR) API
+description: Snowpack implements HMR via the esm-hmr spec, an attempted standard for ESM-based Hot Module Replacement (HMR).
+---
+
+Snowpack implements HMR via the [esm-hmr](https://github.com/pikapkg/esm-hmr) spec, an attempted standard for ESM-based Hot Module Replacement (HMR).
+
+```js
+// HMR Code Snippet Example
+if (import.meta.hot) {
+ import.meta.hot.accept(({ module }) => {
+ // Accept the module, apply it into your application.
+ });
+}
+```
+
+Full API Reference: [snowpack/esm-hmr on GitHub](https://github.com/snowpackjs/esm-hmr)
+
+[Learn more](/concepts/hot-module-replacement) about HMR, Fast Refresh, and how it's meant to work in Snowpack.