Synchronous Spell Checking For Node.js

I am trying to check the spelling of individual words synchronously in Node.js. All of the libraries I have found (spellchecker, teacher, speller, ...) have asynchronous calls, and that doesn't work for me.

Here is the structure of my code:

function mycheck(w) {
    spell.check(w, function(err, correct, suggestions) {
        if (correct) {
          return true;
        }
        else {
          return false;
        }
    });
}

The problem is, mycheck is always undefined, because spell.check is asynchronous. Also, I can't just make mycheck be asynchronous, because that doesn't fit with the rest of my program.

Is there another way to spell check (synchronously) or a way to make this work synchronously? I am ok with using some kind of "helper" package to make the function synchronous.

Thanks so much! :D