refactor: setupFeatures method (#1891)

Author: evilebottnawi

lib/Server.js

@@ -521,51 +521,49 @@ class Server {
       },
     };
 
-    const defaultFeatures = ['setup', 'before', 'headers', 'middleware'];
+    const runnableFeatures = [];
 
-    if (this.options.proxy) {
-      defaultFeatures.push('proxy', 'middleware');
+    // compress is placed last and uses unshift so that it will be the first middleware used
+    if (this.options.compress) {
+      runnableFeatures.push('compress');
     }
 
-    const contentBase = this.options.contentBase;
+    runnableFeatures.push('setup', 'before', 'headers', 'middleware');
 
-    if (contentBase !== false) {
-      defaultFeatures.push('contentBaseFiles');
+    if (this.options.proxy) {
+      runnableFeatures.push('proxy', 'middleware');
     }
 
-    if (this.options.watchContentBase) {
-      defaultFeatures.push('watchContentBase');
+    if (this.options.contentBase !== false) {
+      runnableFeatures.push('contentBaseFiles');
     }
 
     if (this.options.historyApiFallback) {
-      defaultFeatures.push('historyApiFallback', 'middleware');
+      runnableFeatures.push('historyApiFallback', 'middleware');
 
-      if (contentBase !== false) {
-        defaultFeatures.push('contentBaseFiles');
+      if (this.options.contentBase !== false) {
+        runnableFeatures.push('contentBaseFiles');
       }
     }
 
-    defaultFeatures.push('magicHtml');
-
     // checking if it's set to true or not set (Default : undefined => true)
     this.serveIndex = this.serveIndex || this.serveIndex === undefined;
 
-    const shouldHandleServeIndex = contentBase && this.serveIndex;
-
-    if (shouldHandleServeIndex) {
-      defaultFeatures.push('contentBaseIndex');
+    if (this.options.contentBase && this.serveIndex) {
+      runnableFeatures.push('contentBaseIndex');
     }
 
-    // compress is placed last and uses unshift so that it will be the first middleware used
-    if (this.options.compress) {
-      defaultFeatures.unshift('compress');
+    if (this.options.watchContentBase) {
+      runnableFeatures.push('watchContentBase');
     }
 
+    runnableFeatures.push('magicHtml');
+
     if (this.options.after) {
-      defaultFeatures.push('after');
+      runnableFeatures.push('after');
     }
 
-    (this.options.features || defaultFeatures).forEach((feature) => {
+    (this.options.features || runnableFeatures).forEach((feature) => {
       features[feature]();
     });
   }