fluxible request

request.client.js

var promises = require('./request.promisify'),
  superagent = require('superagent'),
  cookies = require('cookies-js'),
  methods = require('methods'),
  clientRequest = {}

methods.concat('del').forEach(method => {
  if (superagent[method])
    clientRequest[method] = (...args) => {
      return superagent[method].apply(superagent, args).use(xsrfToken).use(promises)
    }
})

module.exports = clientRequest

function xsrfToken (request) {
  return request.set('x-xsrf-token', cookies.get('XSRF-TOKEN'))
}

request.promisify.js

'use strict'

module.exports = function promises (request) {
  request['then'] = _then.bind(request)
  request['catch'] = _catch.bind(request)
  return request
}

function _then (fulfilled, rejected) {
  if (!this.promise)
    this.promise = new Promise((resolve, reject) => {
      this.end((err, res) => err ? reject(err) : resolve(res))
    })
  return this.promise.then(fulfilled, rejected)
}

function _catch (rejected) {
  if (!this.promise) this.then()
  return this.promise.catch(rejected)
}

request.server.js

var promises = require('./request.promisify'),
  supertest = require('supertest'),
  methods = require('methods')

module.exports = function serverRequest (server, headers) {
  var request = supertest(server), out = {}
  methods.concat('del').forEach(method => {
    if (request[method])
      out[method] = (...args) => request[method].apply(request, args).set(headers).use(promises)
  })
  return out
}