500/index.js

Generate 500 response errors.

'use strict';

var production = process.env.NODE_ENV === 'production';

/**
 * Generic 500 response handler.
 *
 * @param {Response} res HTTP server response object.
 * @param {Mixed} message Message that needs to presented to user.
 * @api private
 */
module.exports = function fivehundered(res, message) {
  res.statusCode = 500;

  if ('object' === typeof message) {
    res.setHeader('Content-Type', 'application/json');

    if (message instanceof Error && typeof message.toJSON !== 'function') {
      message = {
        message: message.message,
        stack: production && message.stack
      };
    }

    message = JSON.stringify(message, null, production ? 0 : 2);
  }

  if (!res.getHeader('Content-Type')) {
    res.setHeader('Content-Type', 'plain/text');
  }

  res.setHeader('Content-Length', Buffer.byteLength(message));
  res.end(message);
};