A PHP Class to render php arrays into Javascript variables.

Javascript.php

<?php

use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Support\Jsonable;
use Illuminate\Contracts\Support\Renderable;
use Illuminate\Support\Collection;
use Illuminate\Support\HtmlString;

class Javascript implements Arrayable, Jsonable, Renderable
{

    protected $namespace = null;

    /**
     * @var Collection
     */
    protected $vars;

    public function __construct($namespace = null)
    {
        $this->namespace = $namespace;
        $this->vars = collect();
    }

    public function add($name, $content)
    {
        $vars = $this->vars->toArray();
        if(is_array($name)){
            foreach($name as $key => $content){
                $this->vars = collect(data_set($vars, $key, $content));
            }
            return $this;
        }
        $this->vars = collect(data_set($vars, $name, $content));
        return $this;
    }

    public function remove($name)
    {
        $this->vars->forget($name);
        return $this;
    }

    public function get($name, $default = null)
    {
        return $this->vars->get($name, $default);
    }

    public function toArray()
    {
        $this->vars->toArray();
    }

    public function toJson($options = 0)
    {
        return $this->vars->toJson();
    }

    public function render()
    {
        // TODO: Si se actualiza a una versión de Laravel más reciente, se puede utilizar 'reduce' en lugar de map + implode. El problema es que en la versión actual reduce no tiene la calve del array.
        $varDeclarations = $this->declareNamespaceVar() . PHP_EOL . implode('', $this->vars->map(function ($value, $key) {
            return $this->declareVar($key, $value);
        })->toArray());
        return $this->declareScript($varDeclarations);
    }

    protected function declareScript($content, $type = 'text/javascript')
    {
        return $content ? new HtmlString("<script type='{$type}'>{$content};</script>") : '';
    }

    protected function declareNamespaceVar()
    {
        if (empty($this->namespace)) {
            return '';
        }

        return "window['{$this->namespace}'] = window['{$this->namespace}'] || {};";
    }

    protected function declareVar($name, $value)
    {
        $value = $this->varValue($value);
        return "{$this->varNamespace($name)} = " . json_encode($value) . ';' . PHP_EOL;
    }

    public function varNamespace($name)
    {
        return $this->namespace ? "window['{$this->namespace}']['{$name}']" : "window['{$name}']";
    }

    /**
     * Comprueba el valor que va a ir como valor de la variable de Javascript.
     * Si el valor es una función anónima se ejecutará y el valor resultante de la función lo asignará a la variable de Javascript.
     *
     * @param $value
     *
     * @return mixed
     */
    protected function varValue($value)
    {
        if (is_callable($value)) {
            return $value();
        }

        if (is_array($value)) {
            foreach ($value as $k => $v) {
                $value[$k] = $this->varValue($v);
            }
        }

        return $value;
    }
}