How to implement a route decorator for inversify-express-utils

The library Inversify-Express-Utils is very good library that unions the functionality of both libraries: ExpresJs and InversifyJs. It provides a lot of functionality for extension. It also provides an authentication provider integration. But it is handled in an imperative way. There were not pre-configured possibilities.

I wanted to define rules in a declarative way by decorators. It was logical. But they were absent. I investigated a way how to implement decorators for, and covered the authentication provider by decorators.
This is a decorator for my application. It checks if an user has a permission.

export function permission (permission: string): any {
  return function (target: any, key: string | symbol, descriptor: TypedPropertyDescriptor) {
    const fn = descriptor.value as Handler
    descriptor.value = async function (request: Request, response: Response, next: NextFunction) {
      const context: HttpContext = Reflect.getMetadata(
        'inversify-express-utils:httpcontext',
        request
      )
      const hasAccess = await context.user.isResourceOwner(permission)
      if (hasAccess) {
        return fn.call(this, request, response)
      } else {
        response
          .status(403)
          .send({ error: 'The authenticated user does not have an access to the resource.' })
        return response
      }
    }

    return descriptor
  }
}

Because it is a custom implementation we need handle it with InversifyJS. The MetaData - httpContext is attached to the incoming request. We retrieve it in a following way:

const context: HttpContext = Reflect.getMetadata(
  'inversify-express-utils:httpcontext',
   request
)

I've created a Pull Request where I created decorators for the authentication provider and covered everything by tests. I would be glad if somebody review, comment and vote for.
Reagards, Viktor.