 
The best PHP mapper you've ever seen =)
You can see some examples here:
Full documentation in progress...
Mapper package is available as Composer repository and can be installed using the following command in a root of your project:
composer require type-lang/mapperuse TypeLang\Mapper\Mapping\MapType;
class ExampleObject
{
    public function __construct(
        #[MapType('list<non-empty-string>')]
        public readonly array $names,
    ) {}
}
$mapper = new \TypeLang\Mapper\Mapper();
$result = $mapper->normalize(
    new ExampleObject(['Example'])
);
// Expected Result:
//
// array:1 [
//   "names" => array:1 [
//     0 => "Example"
//   ]
// ]
$result = $mapper->denormalize([
    'names' => ['first', 'second']
], ExampleObject::class);
// Expected Result:
//
// ExampleObject {#324
//   +names: array:2 [
//     0 => "first"
//     1 => "second"
//   ]
// }
$result = $mapper->denormalize([
    'names' => ['first', 'second', ''],
], ExampleObject::class);
// Expected Result:
//
// InvalidFieldTypeValueException: Passed value of field "names" must be of type
//   list<non-empty-string>, but array(3)["first", "second", ""] given at $.names[2]Sample: An object that contains a collection of objects, which contains another collection of objects.
object<ExampleObject>{
    name: string,
    items: list<ExampleObject>
}The results are sorted by mode time.
Denormalization: For example, conversion from JSON to PHP Object.
| benchmark | memory | min | mode | rstdev | 
|---|---|---|---|---|
| JMSAttributesBench | 853.248kb | 41.890μs | 42.562μs | ±6.53% | 
| JMSAttributesWithSymfonyPsr6Bench | 718.816kb | 42.500μs | 42.926μs | ±0.46% | 
| TypeLangAttributesWithSymfonyPsr16Bench | 721.720kb | 52.590μs | 53.200μs | ±0.56% | 
| TypeLangDocBlockBench | 839.008kb | 52.490μs | 53.155μs | ±6.83% | 
| TypeLangDocBlockWithSymfonyPsr16Bench | 786.512kb | 52.500μs | 52.976μs | ±2.31% | 
| TypeLangAttributesWithSymfonyPsr6Bench | 717.960kb | 52.840μs | 53.031μs | ±0.87% | 
| TypeLangDocBlockWithSymfonyPsr6Bench | 783.312kb | 52.940μs | 53.203μs | ±0.24% | 
| TypeLangAttributesBench | 1.209mb | 53.160μs | 53.459μs | ±1.55% | 
| SymfonyPHPStanBench | 710.344kb | 140.460μs | 141.594μs | ±0.64% | 
| SymfonyDocBlockBench | 1.850mb | 140.910μs | 142.580μs | ±0.89% | 
| ValinorBench | 894.984kb | 142.120μs | 142.259μs | ±0.44% | 
| ValinorWithCustomPsr16Bench | 574.496kb | 143.380μs | 144.214μs | ±0.73% | 
| ValinorWithSymfonyPsr16Bench | 548.008kb | 145.680μs | 151.617μs | ±1.83% | 
| SymfonyDocBlockWithSymfonyPsr6Bench | 644.608kb | 200.810μs | 203.024μs | ±1.48% | 
| SymfonyPHPStanWithSymfonyPsr6Bench | 565.376kb | 202.000μs | 202.599μs | ±1.21% | 
Normalization: For example, conversion from PHP Object to JSON.
| benchmark | memory | min | mode | rstdev | 
|---|---|---|---|---|
| ValinorWithCustomPsr16Bench | 885.496kb | 10.060μs | 10.107μs | ±0.79% | 
| ValinorBench | 866.440kb | 38.250μs | 38.419μs | ±2.14% | 
| SymfonyPHPStanBench | 647.632kb | 41.220μs | 43.365μs | ±2.17% | 
| SymfonyDocBlockBench | 1.850mb | 43.120μs | 43.370μs | ±1.11% | 
| TypeLangAttributesWithSymfonyPsr16Bench | 721.720kb | 50.520μs | 50.844μs | ±2.82% | 
| TypeLangAttributesWithSymfonyPsr6Bench | 717.960kb | 50.590μs | 50.952μs | ±1.46% | 
| TypeLangAttributesBench | 1.200mb | 50.610μs | 51.502μs | ±1.25% | 
| TypeLangDocBlockWithSymfonyPsr6Bench | 783.256kb | 50.800μs | 50.859μs | ±0.37% | 
| TypeLangDocBlockBench | 838.272kb | 50.810μs | 51.446μs | ±0.60% | 
| TypeLangDocBlockWithSymfonyPsr16Bench | 786.456kb | 51.960μs | 52.670μs | ±20.25% | 
| JMSAttributesBench | 927.920kb | 56.070μs | 56.750μs | ±2.30% | 
| JMSAttributesWithSymfonyPsr6Bench | 793.808kb | 56.170μs | 57.160μs | ±2.00% | 
| SymfonyDocBlockWithSymfonyPsr6Bench | 603.352kb | 77.490μs | 78.519μs | ±1.21% | 
| SymfonyPHPStanWithSymfonyPsr6Bench | 448.344kb | 78.220μs | 79.170μs | ±1.93% | 
| ValinorWithSymfonyPsr16Bench* | 436.760kb | ERROR | ERROR | ±31.62% | 
- ValinorWithSymfonyPsr16Bench- cuyz/valinor does not support PSR-16 cache (not compatible with other implementations): CuyZ/Valinor#623- Uncaught Error: Object of type CuyZ\Valinor\Normalizer\Transformer\EvaluatedTransformer is not callable