Function nodejs_path::extname

pub fn extname(path: &str) -> String

assert_eq!(nodejs_path::extname("index.html"), ".html".to_string());

assert_eq!(nodejs_path::extname("index.coffee.md"), ".md".to_string());

assert_eq!(nodejs_path::extname("index."), ".".to_string());

assert_eq!(nodejs_path::extname("index"), "".to_string());

assert_eq!(nodejs_path::extname(".index.md"), ".md".to_string());