gistfile1.js

var jayson = require(__dirname + '/../..');

var wrap_jayson = function(client) {
  return {
    request: function(name, args) {
      return new Promise(function(resolve, reject) {
        client.request(name, args, function(err, error, response) {
          if (err) return reject(err);
          resolve(response);
        })
      });
    }
  }  
};

// create a client
var client = wrap_jayson(jayson.client.http({
  port: 3000,
  hostname: 'localhost'
}));

// invoke "add"
client.request('add', [1, 1]).then(function(response) {
  console.log(response); // 2!
}).catch(function(err) {
  console.error(err);    
});