path.join([path1][, path2][, ...])
Join all arguments together and normalize the resulting path.
Arguments must be strings. In v0.8, non-string arguments were silently ignored. In v0.10 and up, an exception is thrown.
Example:
path.join('/foo', 'bar', 'baz/asdf', 'quux', '..')
// returns '/foo/bar/baz/asdf'
path.join('foo', {}, 'bar')
// throws exception
TypeError: Arguments to path.join must be strings
Note: If the arguments to join have zero-length strings, unlike other path module functi