src/Middleware/ProfileJsonResponse.php
public function handle($request, Closure $next)
    {
        $response = $next($request);

        if (
            $response instanceof JsonResponse &&
            app()->bound('debugbar') &&
            app('debugbar')->isEnabled() &&
            is_object($response->getData())
        ) {
            $response->setData($response->getData(true) + [
                '_debugbar' => app('debugbar')->getData(),
            ]);
        }

        return $response;
    }
public function handle($request, Closure $next)
    {
        $response = $next($request);

        if (
            $response instanceof JsonResponse &&
            app()->bound('debugbar') &&
            app('debugbar')->isEnabled() &&
            is_object($response->getData())
        ) {
            $response->setData($response->getData(true) + [
                '_debugbar' => app('debugbar')->getData(),
            ]);
        }

        return $response;
    }
Handle an incoming request.

@see https://github.com/barryvdh/laravel-debugbar/issues/252#issuecomment-248343762

@param  \Illuminate\Http\Request  $request
@param  \Closure  $next
@return mixed