Laravel5.5 广播系统模板写 Laravel-Echo 时报这个错误怎么解决？？

laravel5.5广播系统模板写laravel-Echo时报这个错误怎么解决？？
错误：SyntaxError: import declarations may only appear at top level of a module

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <meta name="_token" content="{{ csrf_token() }}"/>
    <title>Document</title>

    <script>
        import Echo from 'laravel-echo'

        window.Pusher = require('pusher-js');

        window.Echo = new Echo({
            broadcaster: 'pusher',
            key: 'a9f96020257b272105b6',
            cluster: 'ap1',
            encrypted: true
        });
        Echo.channel('Toudi.16')
            .listen('ToudiEvent', (e) => {
            console.log(e);
        });
    </script>
</head>
<body>

</body>
</html>