strata/lib/content-type.js

A modular, streaming HTTP server

/**
 * A middleware that sets a default Content-Type header in case one hasn't
 * already been set in a downstream app.
 */
module.exports = function (app, defaultType) {
  defaultType = defaultType || 'text/html';

  function contentType(env, callback) {
    app(env, function (status, headers, body) {
      if (!headers['Content-Type']) {
        headers['Content-Type'] = defaultType;
      }

      callback(status, headers, body);
    });
  }

  return contentType;
};