Missing generic for return type of \Illuminate\Support\Collection::collapse

[apasquini95]

I everyone and thanks for this awesome framework :) I saw that the method \Illuminate\Support\Collection::collapse is missing the generics in the return type (https://github.com/laravel/framework/blob/12.x/src/Illuminate/Collections/Collection.php#L140) and this causes errors with tools like phpstan-strict-rules, is this intended or am I missing something?

    /**
     * Collapse the collection of items into a single array.
     *
     * @return static<int, mixed>                                       // Why not static<TKey, TValue> ?
     */
    public function collapse()
    {
        return new static(Arr::collapse($this->items));
    }

[Sandalanka]

/**

• Collapse the collection of items into a single array.
• @return static<int, mixed>
  */
  public function collapse(): static
  {
  return new static(Arr::collapse($this->items));
  }

This is return type static. use this method like