Games : How to add a sanity regeneration to a created character for Don't Starve?

I am currently in the process of creating custom modded characters for my friends and myself for Don't Starve. The only problem is that I cannot figure out what line of code I am supposed to use to program a sanity regeneration in Don't Starve and what line of code I am supposed to use to negate the effects of night on a character's sanity. This seems to be the one problem I've been having as I can't finish my character without the sanity regeneration. Any help to solve this problem will be greatly appreciated. Thanks again.