use log::{Level, Log, Metadata, Record}; struct ConsoleLogger; impl Log for ConsoleLogger {    fn enabled(&self, _metadata: &Metadata) -> bool {        true    }     fn log(&self, record: &Record) {        if !self.enabled(record.metadata()) {            return;        }         let message = format!(            "[{}] {}: {}",            record.level(),            record.target(),            record.args()        );        let js_string = wasm_bindgen::JsValue::from_str(&message);         match record.level() {            Level::Error => web_sys::console::error_1(&js_string),            Level::Warn => web_sys::console::warn_1(&js_string),            Level::Info => web_sys::console::info_1(&js_string),            Level::Debug | Level::Trace => web_sys::console::log_1(&js_string),        }    }     fn flush(&self) {}} pub fn init_logging() {    // Without this hook, panics abort with an opaque "unreachable executed"    // in the browser console instead of a message and backtrace.    console_error_panic_hook::set_once();     log::set_logger(&ConsoleLogger).ok();    log::set_max_level(if cfg!(debug_assertions) {        log::LevelFilter::Debug    } else {        log::LevelFilter::Info    });}