Turn your comment into code

The first version of my code was:

    function user_should_see_priority_items (user={}) {
        // why double negative? we want the default to be that user can see priority items so if should_see_priority_items is not defined then it should see priority items
        return user.should_see_priority_items !== false
    }

I wrote a comment because I found the !== false confusing.

But after writing the comment I still found the code to be confusing. Then why not remove the reason for the comment?

const isNil = item => item === undefined || item === null
const useDefault = (_default, item) => isNil(item) 
  ? _default
  : item  
function user_should_see_priority_items (user = {}) {        
  return useDefault(true, user.should_see_priority_items)
}

Always try to convert your comment into code