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type NamespacePrototype = {  iri: string;  prefix: string;  terms: readonly string[];};
type NamespacePrefix<Namespace extends NamespacePrototype> =  Namespace["prefix"];
type NamespaceIri<Namespace extends NamespacePrototype> = Namespace["iri"];
type NamespaceObject<Namespace extends NamespacePrototype> = {  [Term in Namespace["terms"][number]]: `${NamespacePrefix<Namespace>}${Term}`;};
export const createNamespace = <  N extends NamespacePrototype,  I = NamespaceIri<N>,  P = NamespacePrefix<N>,  O = NamespaceObject<N>>(  namespaceSpec: N) =>  Object.assign(    //<X extends I>(f: [X]) =>    //  `${namespaceSpec.prefix}:${f}` as `${string & P}${string & X}`,    namespaceSpec.terms.reduce((acc, term) => {      //acc[term] = `${namespaceSpec.prefix}${term}`      acc[term] = `${namespaceSpec.iri}${term}`;      return acc;    }, {} as any),    {      $prefix: namespaceSpec["prefix"],      $iri: namespaceSpec["iri"],    }  ) as O & {    $prefix: P;    $iri: I;  };