client.js

function(e){"object"==typeof exports?module.exports=e():"function"==typeof define&&define.amd?define(e):"undefined"!=typeof window?window.io=e():"undefined"!=typeof global?global.io=e():"undefined"!=typeof self&&(self.io=e())}(function(){var define,module,exports;
return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){

module.exports = require('./lib/');

},{"./lib/":2}],2:[function(require,module,exports){
var __dirname="/lib";
/**
 * Module dependencies.
 */

var url = require('./url');
var parser = require('socket.io-parser');
var Manager = require('./manager');

/**
 * Module exports.
 */

module.exports = exports = lookup;

/**
 * Managers cache.
 */

var cache = exports.managers = {};

/**
 * Looks up an existing `Manager` for multiplexing.
 * If the user summons:
 *
 *   `io('http://localhost/a');`
 *   `io('http://localhost/b');`
 *
 * We reuse the existing instance based on same scheme/port/host,
 * and we initialize sockets for each namespace.
 *
 * @api public
 */

function lookup(uri, opts){
  opts = opts || {};

  var parsed = url(uri);
  var href = parsed.href;
  var io;

  if (opts.forceNew || false === opts.multiplex) {
    io = Manager(href, opts);
  } else {
    var id = parsed.id;
    if (!cache[id]) cache[id] = Manager(href, opts);
    io = cache[id];
  }

  return io.socket(parsed.pathname || '/');
}

/**
 * Expose standalone client source.