src/cli/util.js/logResolvedConfigPathOrDie
function logResolvedConfigPathOrDie(context, filePath) {
  const configFile = resolver.resolveConfigFile.sync(filePath);
  if (configFile) {
    context.logger.log(path.relative(process.cwd(), configFile));
  } else {
    process.exit(1);
  }
}