How to use new

[meredevelopment]

I'm having difficulty using the newish LPL_MIDDLEWARE env var.

I need to inject some middleware called firetest before every request this package deals with. I can add it via the config like this and it works fine:

<?php

use Grosv\LaravelPasswordlessLogin\HandleAuthenticatedUsers;

return [
    'user_model' => env('LPL_USER_MODEL', 'App\User'),
    // etc etc 
    'middleware' => env('LPL_MIDDLEWARE', ['firetest', 'web', HandleAuthenticatedUsers::class]),
];

How would I add it in .env?

I've tried:

LPL_MIDDLEWARE="['firetest', 'web', HandleAuthenticatedUsers::class]" #result: Target class [['firetest', 'web', HandleAuthenticatedUsers] does not exist
LPL_MIDDLEWARE="['firetest', 'web', Grosv\LaravelPasswordlessLogin\HandleAuthenticatedUsers\HandleAuthenticatedUsers::class]" #result: White screen no visible errors.
LPL_MIDDLEWARE="['firetest', 'web', Grosv\LaravelPasswordlessLogin\HandleAuthenticatedUsers\HandleAuthenticatedUsers]" #result: White screen no visible errors.
LPL_MIDDLEWARE="['firetest', 'web']" #result: Target class [['firetest', 'web']] does not exist.
LPL_MIDDLEWARE="\['firetest', 'web'\]" #result: Target class [['firetest', 'web']] does not exist.

I'm thinking there's no way to define an array in .env without having it exploded or something to turn it into an array when it's retrieved, so is the LPL_MIDDLEWARE actually usable? I suppose if one only want's to define a single middleware it is. Any thoughts please?