detect.js

/* jshint node: true */
/* global window: false */
/* global navigator: false */

'use strict';

var browser = require('detect-browser').detect();

/**
  ### `rtc-core/detect`

  A browser detection helper for accessing prefix-free versions of the various
  WebRTC types.

  ### Example Usage

  If you wanted to get the native `RTCPeerConnection` prototype in any browser
  you could do the following:

  ```js
  var detect = require('rtc-core/detect'); // also available in rtc/detect
  var RTCPeerConnection = detect('RTCPeerConnection');
  ```

  This would provide whatever the browser prefixed version of the
  RTCPeerConnection is available (`webkitRTCPeerConnection`,
  `mozRTCPeerConnection`, etc).
**/
var detect = module.exports = function(target, opts) {
  var attach = (opts || {}).attach;
  var prefixIdx;
  var prefix;
  var testName;
  var hostObject = this || (typeof window != 'undefined' ? window : undefined);

  // initialise to default prefixes
  // (reverse order as we use a decrementing for loop)
  var prefixes = ((opts || {}).prefixes || ['ms', 'o', 'moz', 'webkit']).concat('');

  // if we have no host object, then abort
  if (! hostObject) {
    return;
  }

  // iterate through the prefixes and return the class if found in global
  for (prefixIdx = prefixes.length; prefixIdx--; ) {
    prefix = prefixes[prefixIdx];

    // construct the test class name
    // if we have a prefix ensure the target has an uppercase first character
    // such that a test for getUserMedia would result in a
    // search for webkitGetUserMedia
    testName = prefix + (prefix ?
                            target.charAt(0).toUpperCase() + target.slice(1) :
                            target);

    if (typeof hostObject[testName] != 'undefined') {
      // update the last used prefix
      detect.browser = detect.browser || prefix.toLowerCase();

      if (attach) {
         hostObject[target] = hostObject[testName];
      }

      return hostObject[testName];
    }
  }
};

// detect mozilla (yes, this feels dirty)
detect.moz = typeof navigator != 'undefined' && !!navigator.mozGetUserMedia;
// Newer Ipad versions cannot be detected just using useragent
// And detect-browser does not plan to implement this feature (ref: https://github.com/DamonOehlman/detect-browser/issues/163)
// Ref: https://stackoverflow.com/questions/9038625/detect-if-device-is-ios/58065241#58065241
const isIosMimic =
navigator && navigator.maxTouchPoints &&
	navigator.maxTouchPoints > 2 &&
	/MacIntel/.test(navigator.platform);

// set the browser and browser version
detect.browser = browser.name;
detect.browserVersion = detect.version = browser.version;
detect.os = browser.os;
if(isIosMimic) {
  detect.os = 'iOS';
}