Function inject_livereload

cli/src/serve.rs:86–91

(html: &str)

</script>"#;

fn inject_livereload(html: &str) -> String {
    match html.rfind("</body>") {
        Some(i) => format!("{}{}{}", &html[..i], LIVERELOAD, &html[i..]),
        None => format!("{html}{LIVERELOAD}"),
    }
}

/// Bump `version` whenever any file under `dir` changes. Mtime poll, no watcher dependency.
fn spawn_watcher(dir: PathBuf, version: Arc<AtomicU64>) {