// Copyright 2017-2021 @polkadot/api-derive authors & contributors
// SPDX-License-Identifier: Apache-2.0

import type { ApiInterfaceRx } from '@polkadot/api/types';

export function getInstance (api: ApiInterfaceRx, section: string): string {
  const instances = api.registry.getModuleInstances(api.runtimeVersion.specName.toString(), section);

  return instances && instances.length
    ? instances[0]
    : section;
}