How to use the @blackbaud/skyux-logger.warn function in @blackbaud/skyux-logger

function killServers(exitCode) {
  logger.info('Cleaning up running servers');

  if (seleniumServer) {
    logger.info('Closing selenium server');
    seleniumServer.kill();
    seleniumServer = null;
  }

  // Catch protractor's "Kitchen Sink" error.
  if (exitCode === 199) {
    logger.warn('Supressing protractor\'s "kitchen sink" error 199');
    exitCode = 0;
  }

  server.stop();
  logger.info(`Execution Time: ${(new Date().getTime() - start) / 1000} seconds`);
  logger.info(`Exiting process with ${exitCode}`);
  process.exit(exitCode || 0);
}

function killServers(exitCode) {
  logger.info('Cleaning up running servers');

  if (seleniumServer) {
    logger.info('Closing selenium server');
    seleniumServer.kill();
    seleniumServer = null;
  }

  // Catch protractor's "Kitchen Sink" error.
  if (exitCode === 199) {
    logger.warn('Supressing protractor\'s "kitchen sink" error 199');
    exitCode = 0;
  }

  server.stop();
  logger.info(`Execution Time: ${(new Date().getTime() - startTime) / 1000} seconds`);
  logger.info(`Exiting process with ${exitCode}`);
  process.exit(exitCode || 0);
}

platform,
    skyPagesConfigUtil.outPath(),
    ''
  );

  // Using glob so we can find skyux-builder-config regardless of npm install location
  let external = glob.sync(getPath(
    command,
    platform,
    process.cwd(),
    'node_modules/**/skyux-builder-config/'
  ));

  let config;
  if (external.length > 1) {
    logger.warn(`Found multiple external config files.`);
    external = external.slice(0, 1);
  }

  if (external.length === 1) {
    logger.info(`Using external config ${external[0]}`);
    config = external[0];
  } else if (fs.existsSync(internal)) {
    logger.info(`Using internal config ${internal}`);
    config = internal;
  } else {
    logger.error('Error locating a config file.');
    process.exit(1);
  }

  return config;
}

compiler.run((err, stats) => {
      if (err) {
        return reject(err);
      }

      const jsonStats = stats.toJson();

      if (jsonStats.errors.length) {
        return reject(jsonStats.errors);
      }

      if (jsonStats.warnings.length) {
        logger.warn(jsonStats.warnings);
      }

      // Normal logging is handled by SimpleProgressWebpackPlugin in common.webpack.config.js
      resolve(stats);
    });
  });

function safeFileWrite(pathParts, fileName, fileContent, force) {
  const resolvedFileName = path.resolve('src', 'app', ...pathParts, fileName);
  const resolvedFileExists = fs.existsSync(resolvedFileName);

  if (resolvedFileExists && !force) {
    logger.warn(`${resolvedFileName} already exists. Use --force to overwrite.`);
    return;
  }

  if (resolvedFileExists) {
    logger.warn(`${resolvedFileName} already exists. Forcefully overwriting.`);
  }

  fs.ensureDirSync(path.resolve('src', 'app', ...pathParts));
  fs.writeFileSync(resolvedFileName, fileContent);
  logger.info(`Successfully created ${resolvedFileName}.`);
}

function safeFileWrite(pathParts, fileName, fileContent, force) {
  const resolvedFileName = path.resolve('src', 'app', ...pathParts, fileName);
  const resolvedFileExists = fs.existsSync(resolvedFileName);

  if (resolvedFileExists && !force) {
    logger.warn(`${resolvedFileName} already exists. Use --force to overwrite.`);
    return;
  }

  if (resolvedFileExists) {
    logger.warn(`${resolvedFileName} already exists. Forcefully overwriting.`);
  }

  fs.ensureDirSync(path.resolve('src', 'app', ...pathParts));
  fs.writeFileSync(resolvedFileName, fileContent);
  logger.info(`Successfully created ${resolvedFileName}.`);
}