Fix Srutinizer issues

src/drivers/webextension/js/inject.js

@@ -1,6 +1,24 @@
 (() => {
 	try {
-    addEventListener('message', onMessage);
+    const detectJs = chain => {
+      const properties = chain.split('.');
+
+      let value = properties.length ? window : null;
+
+      for ( let i = 0; i < properties.length; i ++ ) {
+        let property = properties[i];
+
+        if ( value && value.hasOwnProperty(property) ) {
+          value = value[property];
+        } else {
+          value = null;
+
+          break;
+        }
+      }
+
+      return typeof value === 'string' || typeof value === 'number' ? value : !!value;
+    };
 
     const onMessage = event => {
       if ( event.data.id !== 'patterns' ) {
@@ -36,25 +54,7 @@
       postMessage({ id: 'js', js }, '*');
     };
 
-    const detectJs = chain => {
+    addEventListener('message', onMessage);
-      const properties = chain.split('.');
-
-      let value = properties.length ? window : null;
-
-      for ( let i = 0; i < properties.length; i ++ ) {
-        let property = properties[i];
-
-        if ( value && value.hasOwnProperty(property) ) {
-          value = value[property];
-        } else {
-          value = null;
-
-          break;
-        }
-      }
-
-      return typeof value === 'string' || typeof value === 'number' ? value : !!value;
-    };
   } catch(e) {
     // Fail quietly
   }

src/drivers/webextension/js/popup.js

@@ -91,7 +91,7 @@ function appsToDomTemplate(response) {
     for ( let cat in categories ) {
       const apps = [];
 
-      for ( appName in categories[cat].apps ) {
+      for ( let appName in categories[cat].apps ) {
         let confidence = response.tabCache.detected[appName].confidenceTotal;
         let version    = response.tabCache.detected[appName].version;
 

src/wappalyzer.js

@@ -123,7 +123,7 @@ class Wappalyzer {
 
           this.driver.displayApps(this.detected[url.canonical], { language }, context);
 
-          resolve();
+          return resolve();
         });
     });
   }
@@ -152,7 +152,7 @@ class Wappalyzer {
             return reject();
           }
 
-          resolve();
+          return resolve();
         }, () => resolve());
     });
   };