feat(nuxi): reload nuxt when `restart` hook is called (#19084)

docs/3.api/4.advanced/1.hooks.md

@@ -38,6 +38,7 @@ Hook                     | Arguments                  | Description
 `kit:compatibility`      | `compatibility, issues`    | Allows extending compatibility checks.
 `ready`                  | `nuxt`                     | Called after Nuxt initialization, when the Nuxt instance is ready to work.
 `close`                  | `nuxt`                     | Called when Nuxt instance is gracefully closing.
+`restart`                | -                          | Called to restart the current Nuxt instance. **This hook is currently only available on the [Edge Channel](/docs/guide/going-further/edge-channel/).** <!-- stabilityedge -->
 `modules:before`         | -                          | Called during Nuxt initialization, before installing user modules.
 `modules:done`           | -                          | Called during Nuxt initialization, after installing user modules.
 `app:resolve`            | `app`                      | Called after resolving the `app` instance.

packages/nuxi/src/commands/dev.ts

@@ -89,6 +89,8 @@ export default defineNuxtCommand({
         }
 
         currentNuxt = await loadNuxt({ rootDir, dev: true, ready: false })
+        currentNuxt.hooks.hookOnce('restart', () => load(true))
+
         if (!isRestart) {
           showURL()
         }

packages/schema/src/types/hooks.ts

@@ -61,7 +61,7 @@ export interface NuxtHooks {
   'kit:compatibility': (compatibility: NuxtCompatibility, issues: NuxtCompatibilityIssues) => HookResult
 
   // Nuxt
-  /** 
+  /**
    * Called after Nuxt initialization, when the Nuxt instance is ready to work.
    * @param nuxt The configured Nuxt object
    * @returns Promise
@@ -73,6 +73,11 @@ export interface NuxtHooks {
    * @returns Promise
    */
   'close': (nuxt: Nuxt) => HookResult
+  /**
+   * Called to restart the current Nuxt instance.
+   * @returns Promise
+   */
+  'restart': () => HookResult
 
   /**
    * Called during Nuxt initialization, before installing user modules.