Laravel 5.1 Blade directive not working

I try to create a custom Blade directive as documented in to official docs.

I created a custom package and installed it via composer. The boot function inside my serviceprovider registers the directive:

public function boot()
{
    Blade::directive('react', function($expression) {
        return "Test";
    });
}

The class is loaded and the boot-function executed. When adding debug output to BladeCompiler@directive my directive is added to the customDirectives array.

But the array inside BladeCompiler@compileStatements is empty so my directive is never executed.

By using spl_object_hash() I found out that $this inside those two functions returned different hashes.

What am I doing wrong?

via Chebli Mohamed