Type Alias CborNative

CborNative:
    | number
    | bigint
    | string
    | boolean
    | null
    | Uint8Array
    | CborNative[]
    | CborMap
    | Cbor

The closed set of values extractCbor can return.

Two deliberate asymmetries are part of this contract:

Maps stay CborMap - map values are NOT recursively extracted into a plain object/Map; the stored container is returned as-is.
Tagged values stay Cbor - a tagged value has no native equivalent, so the tagged node itself is returned.