composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

composer create-project --prefer-dist laravel/laravel=6.* haoran

composer require barryvdh/laravel-ide-helper --dev

config/app中添加

Barryvdh\LaravelIdeHelper\IdeHelperServiceProvider::class,

terminal运行

php artisan ide-helper:generate

composer require barryvdh/laravel-debugbar --dev
Barryvdh\Debugbar\ServiceProvider::class,