small syntax changes

src/graphql/authenticator.js

@@ -9,7 +9,7 @@ const SECRET_KEY = "boom shakalaka";
 // against the LDAP using passportjs
 // The promise will fail if no user is returned in the passport.authenticate
 // callback.
-function loginResolverFunc({ username, password, req }) {
+const loginResolverFunc = ({ username, password, req }) => {
     return new Promise((resolve, reject) => {
         passport.authenticate('ldapauth', (err, user, info) => {
             if (err) { reject(err); }
@@ -20,6 +20,6 @@ function loginResolverFunc({ username, password, req }) {
             resolve(token);
         })({ body: { username, password } });
     });
-}
+};
 
 export default loginResolverFunc;
\ No newline at end of file