docs: update README

fi3ework · Feb 13, 2022 · fe0ea39 · fe0ea39
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diff --git a/README.md b/README.md
@@ -42,6 +42,7 @@ A Vite plugin that can run TypeScript, VLS, vue-tsc, ESLint in worker thread.
 💡 **Caveats**:
 
 1. It's recommended to open browser for a better terminal flush, see [#27](https://github.com/fi3ework/vite-plugin-checker/pull/27).
+2. `server.ws.on` is introduced to Vite in [2.6.8](https://github.com/vitejs/vite/blob/main/packages/vite/CHANGELOG.md#268-2021-10-18). vite-plugin-checker relies on `server.ws.on` to bring diagnostics back after a full reload and it' not available for older version of Vite.
 
 ## Available checkers