Allow passing a `Namespace`/`KubeNamespace` object as `namespace`

[sweco-sedalh]

Description of the feature or enhancement:

Allow, in addition to a string, passing an object (Namespace/KubeNamespace) as the metadata.namespace when constructing objects (both CDK8s and CDK8s+)

Use Case:

I commonly find myself writing something along the lines of:

const ns = new Namespace(this, "namespace");

new Role(this, "role", {
  metadata: {
    namespace: ns.name
  }
});

Proposed Solution:

Allow instead writing:

const ns = new Namespace(this, "namespace");

new Role(this, "role", {
  metadata: {
    namespace: ns
  }
});

By changing the type of namespace to string | Namespace | undefined and, on construction, check if it is an object and in that case call .name.

Other:

The code example above is for CDK8s+, but the same concept could also be useful for non-+ (KubeNamespace etc.), at least within each context (objects in CDK8s+ accepting Namespace, Kube*-objects accepting KubeNamespace), but there could also be compatibility between them (allow CDK8s+ objects to accept KubeNamespace, the opposite is likely not feasibly though).

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

---

This is a 🚀 Feature Request