fix: Fix Hot reloading

lib/app/client.js

@@ -362,7 +362,6 @@ function fixPrepatch (to, ___) {
       layout = layout(app.context)
     }
     this.setLayout(layout)
-
     <% if (isDev) { %>
     // Hot reloading
     setTimeout(() => hotReloadAPI(this), 100)
@@ -388,28 +387,23 @@ function nuxtReady (app) {
 
 <% if (isDev) { %>
 // Special hot reload with asyncData(context)
+function getNuxtChildComponents($parent, $components = []) {
+  $parent.$children.forEach(($child) => {
+    if ($child.$vnode.data.nuxtChild && !$components.find(c =>(component.$options.__file === $child.$options.__file))) {
+      $components.push($child)
+    }
+    if ($child.$children && $child.$children.length) {
+      getNuxtChildComponents($child, $components)
+    }
+  })
+
+  return $components
+}
+
 function hotReloadAPI (_app) {
   if (!module.hot) return
 
-  let $components = []
-  let $nuxt = _app.$nuxt
-
-  while ($nuxt && $nuxt.$children && $nuxt.$children.length) {
-    $nuxt.$children.forEach((child, i) => {
-      if (child.$vnode.data.nuxtChild) {
-        let hasAlready = false
-        $components.forEach(component => {
-          if (component.$options.__file === child.$options.__file) {
-            hasAlready = true
-          }
-        })
-        if (!hasAlready) {
-          $components.push(child)
-        }
-      }
-      $nuxt = child
-    })
-  }
+  let $components = getNuxtChildComponents(_app.$nuxt, [])
 
   $components.forEach(addHotReload.bind(_app))
 }
@@ -440,8 +434,9 @@ function addHotReload ($component, depth) {
       isHMR: true,
       next: next.bind(this)
     })
+    const context = app.context
     <%= (loading ? 'this.$loading.start && this.$loading.start()' : '') %>
-    callMiddleware.call(this, Components, app.context)
+    callMiddleware.call(this, Components, context)
     .then(() => {
       // If layout changed
       if (depth !== 0) return Promise.resolve()

lib/app/components/nuxt-child.js

@@ -30,7 +30,6 @@ export default {
       parent = parent.$parent
     }
     data.nuxtChildDepth = depth
-
     const transition = transitions[depth] || defaultTransition
     let transitionProps = {}
     transitionsKeys.forEach((key) => {