How to use the datx.isCollection function in datx

export function jsonapi(
  Base: IModelConstructor|ICollectionConstructor|IViewConstructor,
) {
  if (isModel(Base)) {
    // @ts-ignore
    return decorateModel(Base);
  } else if (isCollection(Base)) {
    // @ts-ignore
    return decorateCollection(Base);
  } else if (isView(Base)) {
    // @ts-ignore
    return decorateView(Base);
  }

  throw new Error('The instance needs to be a model, collection or a view');
}