How to use the @aws-sdk/shared-ini-file-loader.loadSharedConfigFiles function in @aws-sdk/shared-ini-file-loader

export function parseKnownFiles(init: FromIniInit): Promise {
  const { loadedConfig = loadSharedConfigFiles(init) } = init;

  return loadedConfig.then(parsedFiles => {
    const { configFile, credentialsFile } = parsedFiles;
    return {
      ...configFile,
      ...credentialsFile
    };
  });
}