Fix linting issues

Author: Ehesp

.eslintrc

@@ -1,5 +1,4 @@
 {
-  "parser": "babel-eslint",
   "extends": [
     "airbnb"
   ],

src/hook.js

@@ -149,12 +149,12 @@ class MemSet extends BaseHook {
         return value;
       }
       return promise.then ? promise : promise();
-    }).then(value => {
-        return Promise.all([
-          Promise.resolve(value),
-          !foundCache && value ? this.set(key, value, ttl) : Promise.resolve(),
-        ])
-    }).then(results => results[0]);
+    }).then(value =>
+      Promise.all([
+        Promise.resolve(value),
+        !foundCache && value ? this.set(key, value, ttl) : Promise.resolve(),
+      ])
+    ).then(results => results[0]);
   }
 
   /**

test/hook/hook.spec.js

@@ -92,7 +92,6 @@ describe('Memset', () => {
     setInterval(getValue, 1000);
     getValue();
   });
-
 });