You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: emoji.rs
    path of file: ./repos/Rust-Full-Stack/yew/component/src/npm
    
    the code of the file until where you have to start completion: use stdweb::Value;
use stdweb::unstable::TryInto;

// #[der
    
    pub fn emojify(&mut self, message: String) -> String {
        let lib = self.0.as_ref().expect("node-emoji library object lost");
        let v: Value = js! {
            const emoji = @{lib};
            // console.log(emoji);
            return emoji.emojify(@{message});
        };
        let v: String = v.try_into().expect("can't convert to emoji");
        v
    }