Function panic_hook

crates/bindings/src/logger.rs:14–33

Our own panic hook logging to the console.

(info: &panic::PanicHookInfo)

/// Our own panic hook logging to the console.
fn panic_hook(info: &panic::PanicHookInfo) {
    // Try to look into some string types we know (`&'static str` and `String`).
    let msg = match info.payload().downcast_ref::<&'static str>() {
        Some(s) => *s,
        None => match info.payload().downcast_ref::<String>() {
            Some(s) => &s[..],
            None => "Box<dyn Any>",
        },
    };

    // Log the panic message to the console.
    let location = info.location();
    sys::console_log(
        sys::LogLevel::Panic,
        None,
        location.map(|l| l.file()),
        location.map(|l| l.line()),
        msg,
    )
}

struct Logger {
    // `Mutex` is fine here because WASM is single-threaded;