bogart-edge/lib/middleware/stringReturnAdapter.js

Fast JSGI web framework taking inspiration from Sinatra

var q = require('../q')
  , merge = require('../util').merge;

module.exports = function (responseDefaults) {
  responseDefaults = responseDefaults || {
    status: 200,
    headers: { 'Content-Type': 'text/html' }
  };

  return function stringReturnAdapter(req, nextApp) {
    return q.when(nextApp(req), function (resp) {
      if (typeof resp === 'string') {
        return merge({}, responseDefaults, { body: [ resp ] });
      }

      return resp;
    }); 
  };
}