update

Author: linyuchen

docs/.vitepress/theme/index.js

@@ -0,0 +1,16 @@
+// docs/.vitepress/theme/index.ts
+import { inBrowser, useData } from 'vitepress'
+import DefaultTheme from 'vitepress/theme'
+import { watchEffect } from 'vue'
+
+export default {
+	extends: DefaultTheme,
+	setup() {
+		const { lang } = useData()
+		watchEffect(() => {
+			if (inBrowser) {
+				document.cookie = `nf_lang=${lang.value}; expires=Mon, 1 Jan 2024 00:00:00 UTC; path=/`
+			}
+		})
+	},
+}