Laravel asset modtime cache busting

helpers.php

<?php

if (! function_exists('asset_busted')) {
    /**
     * Generate an asset path with modification time query string.
     *
     * @param  string  $path
     * @param  bool|null  $secure
     * @return string
     */
    function asset_busted($path, $secure = null): string
    {
        if (file_exists(public_path($path))) {
            $time = filemtime(public_path($path));
            return app('url')->asset($path . '?mtime=' . $time, $secure);
        } else {
            // Standard asset() fallback
            return app('url')->asset($path, $secure);
        }
    }
}