fix(vercel-analytics): skip script in dev to avoid failed insights POSTs (#713)

Author: harlan-zw

packages/script/src/module.ts

@@ -573,6 +573,16 @@ export default defineNuxtModule<ModuleOptions>({
 constproxyHandlerPath=awaitresolvePath('./runtime/server/proxy-handler')
 addServerHandler({route: `${proxyPrefix}/**`,handler: proxyHandlerPath})
 
+// In dev, sink Vercel Analytics insight POSTs to `/_vercel/insights/*` so
+// they don't 404. Vercel's edge serves this path in production; locally
+// there's no upstream, so we return 204 to keep the script happy.
+if(nuxt.options.dev&&config.registry?.vercelAnalytics){
+addServerHandler({
+route: '/_vercel/insights/**',
+handler: awaitresolvePath('./runtime/server/vercel-insights-sink'),
+})
+}
+
 constcomposables=[
 'useScript',
 'useScriptEventPage',

packages/script/src/runtime/server/vercel-insights-sink.ts

@@ -0,0 +1,6 @@
+import{defineEventHandler,setResponseStatus}from'h3'
+
+exportdefaultdefineEventHandler((event)=>{
+setResponseStatus(event,204)
+returnnull
+})