style: updated eslint config

src/error.js

@@ -1,10 +1,10 @@
 export default (target, key, descriptor) => {
-  let fn = descriptor.value;
+  const fn = descriptor.value;
 
   descriptor.value = async (request, reply) => {
     try {
       await fn(request, reply);
-    } catch(e) {
+    } catch (e) {
       console.error(e);
       reply(e);
     }