This expression is not callable when Type has a generic type parameter (Type<T>)

export function generateEnumerated<T extends string>(variants: readonly T[]): Type<T> {
    const t: Type<T> = type.enumerated(...variants);
    const desc: string = generateDesc(variants);
    return t.describe(desc); // This expression is not callable.
}

This expression is not callable.
  Each member of the union type 'SelectableFn<string, Type<T, {}>, NodeKind> | SelectableFn<string, Type<T, {}>, NodeKind> | SelectableFn<string, Type<...>, NodeKind> | SelectableFn<...> | SelectableFn<...> | SelectableFn<...> | SelectableFn<...>' has signatures, but none of those signatures are compatible with each other.ts(2349)

export function generateEnumerated<T extends string>(variants: readonly T[]): Type<T> {
    const t: Type<T> = type.enumerated(...variants);
    const desc: string = generateDesc(variants);
    return (t as Type).describe(desc) as Type<T>; // works!
}