Node.js check if path is file or directory

I can't seem to get any search results that explain how to do this.

All I want to do is be able to know if a given path is a file or a directory (folder).

fs.lstatSync(path_string).isDirectory() should tell you. From the docs:

Objects returned from fs.stat() and fs.lstat() are of this type.

stats.isFile()
stats.isDirectory()
stats.isBlockDevice()
stats.isCharacterDevice()
stats.isSymbolicLink() (only valid with fs.lstat())
stats.isFIFO()
stats.isSocket()