fix(nuxt): allow validate return typing to be either error or boolean (#22323)

packages/nuxt/src/pages/runtime/composables.ts

@@ -14,7 +14,7 @@ export interface PageMeta {
    * statusCode/statusMessage to respond immediately with an error (other matches
    * will not be checked).
    */
-  validate?: (route: RouteLocationNormalized) => boolean | Promise<boolean> | Partial<NuxtError> | Promise<Partial<NuxtError>>
+  validate?: (route: RouteLocationNormalized) => boolean | Partial<NuxtError> | Promise<boolean | Partial<NuxtError>>
   /**
    * Where to redirect if the route is directly matched. The redirection happens
    * before any navigation guard and triggers a new navigation with the new

test/fixtures/basic-types/types.ts

@@ -116,6 +116,21 @@ describe('middleware', () => {
       abortNavigation(true)
     }, { global: true })
   })
+  it('handles return types of validate', () => {
+    definePageMeta({
+      validate: async () => {
+        await new Promise(resolve => setTimeout(resolve, 1000))
+        // eslint-disable-next-line
+        if (0) {
+          return createError({
+            statusCode: 404,
+            statusMessage: 'resource-type-not-found'
+          })
+        }
+        return true
+      }
+    })
+  })
 })
 
 describe('typed router integration', () => {