use std::env;
fn main() {
if env::var("DOCS_RS").is_err()
&& !cfg!(feature = "cef")
&& !cfg!(feature = "webkitgtk")
&& !cfg!(feature = "edge")
{
panic!(
"No browser framework has been specified. Enable either feature `webkitgtk`, `cef` or \
`edge`."
);
}
}