Pass object and attribute at once for reflect-metadata in TypeScript like in C#

In C# we've DataAnnotation to add meta attributes on properties. I need this functionality in TypeScript for a ldap model class. Decorators should set the LDAP attribute which is internally used in the LDAP directory

export class LdapUser {
    @ldapAttribute('sn')
    sureName: string;
}

export function ldapAttribute(attributeName: string): (target: any, propertyKey: string) => void {
    return function (target: any, propertyKey: string) {
        Reflect.defineMetadata("ldapAttribute", attributeName, target, propertyKey);
    }
}

But to fetch the ldapAttributedecorator value I need to pass object and attribute name as raw strings like this:

let user = new LdapUser();
let sureNameAttribute = Reflect.getMetadata("ldapAttribute", user, "sureName"); // sn

It works, but that seems bad practice, since it would result in a runtime instead of compiler error when sureNameattribute is renamed in LdapUserwithout applying this to the Reflect.getMetadata()call. And also intellisense is missing. So I'm searching for a solution like this:

let sureNameAttribute = Reflect.getMetadata("ldapAttribute", user.sureName);

Problem here is that I need some sort of reflection to divide user.SureNamein the attribute name (here sureName) and class object (here user). I already did something like this in C# using reflection, but have no clue how to do this in TS.