为什么必须重新启动Laravel Tinker才能使代码生效？

Question

我正在使用Tinker测试Laravel广播事件。每次我更改代码源时，都必须重新启动修补程序才能生效。

App \ Events \ ShippingStatusUpdated.php

<?php

namespace App\Events;

use Illuminate\Broadcasting\Channel;
use Illuminate\Queue\SerializesModels;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Broadcasting\PresenceChannel;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;

class ShippingStatusUpdated implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;


    public $update;
    /**
     * Create a new event instance.
     *
     * @return void
     */
    public function __construct($update)
    {
        $this->update = $update;
    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return \Illuminate\Broadcasting\Channel|array
     */
    public function broadcastOn()
    {
        return new Channel('order-5');
    }

    public function broadcastWith() {
        return ['status' => $this->update];
    }
}

resources \ bootstrap.js

//...
import Echo from 'laravel-echo';

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

window.Echo = new Echo({
    broadcaster: 'pusher',
    key: process.env.MIX_PUSHER_APP_KEY,
    cluster: process.env.MIX_PUSHER_APP_CLUSTER,
    encrypted: true
});

let orderId = 5;

window.Echo.channel(`order-${orderId}`)
.listen('ShippingStatusUpdated', (e) => {
    console.log(e);
});

预览

*第一次尝试：代码更改（将construct添加到ShippingStatusUpdated calass）和相同的Tinker实例：获取（status: null）

*第二次尝试重新启动Tinker后：得到（status: 3）

为什么会发生这种情况，以及如何迫使Tinker考虑代码源更改？