Html: proper types for setHtml and addHtml methods – same as insert() method

[vitkutny]

fixes Nette\Utils\Html::insert(): Argument #2 ($child) must be of type Nette\HtmlStringable|string, XY given

[ondrejmirtes]

Please show a piece of code for which "Nette\Utils\Html::insert(): Argument #2 ($child) must be of type Nette\HtmlStringable|string, XY given" is currently reported and which this PR should fix.

Also - did you first try to send a PR to https://github.com/nette/utils?

[vitkutny]

Please show a piece of code for which "Nette\Utils\Html::insert(): Argument https://github.com/phpstan/phpstan-nette/pull/2 ($child) must be of type Nette\HtmlStringable|string, XY given" is currently reported and which this PR should fix.

addHtml method only calls insert method with parameter type HtmlStringable|string. This stub update prevents from passing only \Stringable (or any other type than HtmlStringable|string) into addHtml

namespace Nette\Utils;

class Html implements \ArrayAccess, \Countable, \IteratorAggregate, HtmlStringable
{
    /**
     * Adds new element's child.
     */
    final public function addHtml(mixed $child): static
    {
        return $this->insert(null, $child);
    }

    /**
     * Inserts child node.
     */
    public function insert(?int $index, HtmlStringable|string $child, bool $replace = false): static
    {
    }
}

Also - did you first try to send a PR to https://github.com/nette/utils?

Right, I did not. I will :-)