can lazy property can return any type?

[edgars-vasiljevs]

I can return any type in lazy property callback. Defined string type is ignored.

My understanding was that data objects ensure correct types are always returned. With lazy properties there is no guarantee of that.

Am I missing something?

class TestData extends Data
{
    public function __construct(
        public string|Lazy $prop1,
        public string|Lazy $prop2,
        public string|Lazy $prop3,
        public string|Lazy $prop4,
    ) {
    }

    public static function fromModel(User $user): TestData
    {
        return new static(
            Lazy::create(fn () => null),
            Lazy::create(fn () => false),
            Lazy::create(fn () => 100),
            Lazy::create(fn () => collect()),
        );
    }
}

TestData::from($request->user())->include('*')->toJson();
/*
{
    "prop1": null,
    "prop2": false,
    "prop3": 100,
    "prop4": []
}
*/

[rubenvanassche]

Correct types are being used if non-lazy, since lazy is an executed closure when transforming (toJson for example), we don't check it since it never will be set as a PHP property.

We could check wether the outputted property is indeed what it should be but at the moment such functionality does not exist, you're always welcome to send in such a PR!