deprecate performance key

lib/build.js

@@ -516,7 +516,6 @@ function createRenderer (bundle, manifest) {
     cache: cacheConfig,
     clientManifest: manifest,
     runInNewContext: false,
-    inject: false,
     baseDir: this.options.dir
   }, this.options.build.ssr))
   this.renderToString = pify(this.renderer.renderToString)

lib/nuxt.js

@@ -50,11 +50,10 @@ class Nuxt {
         extendRoutes: null,
         scrollBehavior: null
       },
-      performance: {
+      render: {
         gzip: {
           threshold: 0
-        },
-        prefetch: true
+        }
       },
       watchers: {
         webpack: {},
@@ -94,9 +93,9 @@ class Nuxt {
     this.serveStaticNuxt = pify(serveStatic(resolve(this.dir, '.nuxt', 'dist'), {
       maxAge: (this.dev ? 0 : '1y') // 1 year in production
     }))
-    // gzip for production
-    if (!this.dev && this.options.performance.gzip) {
-      this.gzipMiddleware = pify(compression(this.options.performance.gzip))
+    // gzip middleware for production
+    if (!this.dev && this.options.render.gzip) {
+      this.gzipMiddleware = pify(compression(this.options.render.gzip))
     }
     // Add this.Server Class
     this.Server = Server

lib/render.js

@@ -30,7 +30,7 @@ export async function render (req, res) {
       await this.webpackDevMiddleware(req, res)
       await this.webpackHotMiddleware(req, res)
     }
-    if (!this.dev && this.options.performance.gzip) {
+    if (!this.dev && this.options.render.gzip) {
       await this.gzipMiddleware(req, res)
     }
     // If base in req.url, remove it for the middleware and vue-router
@@ -95,10 +95,7 @@ export async function renderRoute (url, context = {}) {
   if (this._routerBaseSpecified) {
     HEAD += `<base href="${this.options.router.base}">`
   }
-  if (this.options.performance.prefetch) {
-    HEAD += context.renderResourceHints()
-  }
-  HEAD += context.renderStyles()
+  HEAD += context.renderResourceHints() + context.renderStyles()
   APP += `<script type="text/javascript">window.__NUXT__=${serialize(context.nuxt, { isJSON: true })}</script>`
   APP += context.renderScripts()
   const html = this.appTemplate({