gistfile1.php

<?php

require_once('../vendor/autoload.php'); // composer autoload

class Foo {
	public $someProperty = 'val1';
}

class Bar {
	public function __construct($valueFromFoo){
	}
}

$auryn = new Auryn\Injector();

$auryn->delegate('Bar', function (Foo $foo) {
	return new Bar($foo->someProperty);
});

$bar = $auryn->make('Bar');
// expected: delegate function is provisioed with a Foo object
// actual: Catchable fatal error: Argument 1 passed to {closure}() must be an instance of Foo, string given