Yup! We only recommend !function(){}(); for a module where you just need your function to run. If you rely on the return value use (function(){})(); or (functio

Yup! We only recommend !function(){}(); for a module where you just need your function to run. If you rely on the return value use (function(){})(); or (function(){}()); (more on this: https://github.com/airbnb/javascript/issues/21 https://github.com/airbnb/javascript/issues/21)