refactor(nuxt): use useRequestEvent() internally (#23916)

packages/nuxt/src/app/composables/ssr.ts

@@ -3,26 +3,25 @@ import { setResponseStatus as _setResponseStatus, appendHeader, getRequestHeader
 import type { NuxtApp } from '../nuxt'
 import { useNuxtApp } from '../nuxt'
 
+export function useRequestEvent (nuxtApp: NuxtApp = useNuxtApp()): H3Event {
+  return nuxtApp.ssrContext?.event as H3Event
+}
+
 export function useRequestHeaders<K extends string = string> (include: K[]): { [key in Lowercase<K>]?: string }
 export function useRequestHeaders (): Readonly<Record<string, string>>
 export function useRequestHeaders (include?: any[]) {
   if (import.meta.client) { return {} }
-  const event = useNuxtApp().ssrContext?.event
+  const event = useRequestEvent()
   const headers = event ? getRequestHeaders(event) : {}
   if (!include) { return headers }
   return Object.fromEntries(include.map(key => key.toLowerCase()).filter(key => headers[key]).map(key => [key, headers[key]]))
 }
 
-export function useRequestEvent (nuxtApp: NuxtApp = useNuxtApp()): H3Event {
-  return nuxtApp.ssrContext?.event as H3Event
-}
-
 export function useRequestFetch (): typeof global.$fetch {
   if (import.meta.client) {
     return globalThis.$fetch
   }
-  const event = useNuxtApp().ssrContext?.event as H3Event
-  return event?.$fetch as typeof globalThis.$fetch || globalThis.$fetch
+  return useRequestEvent()?.$fetch as typeof globalThis.$fetch || globalThis.$fetch
 }
 
 export function setResponseStatus (event: H3Event, code?: number, message?: string): void