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: web.rs
    path of file: ./repos/winit/src/platform
    
    the code of the file until where you have to start completion: //! # Web
//!
//! The officially supported browsers are Chrome, Firefox and Safari 13.1+,
//! though forks of these should work fine.
//!
//! Winit supports compiling to the `wasm32-unknown-unknown` target with
//! `web-sys`.
//!
//! On the web platform, a Winit 
    
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        match self {
            Self::Blob => write!(f, "failed to create `Blob`"),
            Self::Decode(error) => write!(f, "failed to decode image: {error}"),
            Self::Animation => write!(
                f,
                "found `CustomCursor` that is an animation when building an animation"
            ),
        }
    }