"use strict";

function supportsHistory() {
  /*! taken from modernizr
   * https://github.com/Modernizr/Modernizr/blob/master/LICENSE
   * https://github.com/Modernizr/Modernizr/blob/master/feature-detects/history.js
   * changed to avoid false negatives for Windows Phones: https://github.com/rackt/react-router/issues/586
   */
  var ua = navigator.userAgent;
  if ((ua.indexOf("Android 2.") !== -1 || ua.indexOf("Android 4.0") !== -1) && ua.indexOf("Mobile Safari") !== -1 && ua.indexOf("Chrome") === -1 && ua.indexOf("Windows Phone") === -1) {
    return false;
  }
  return window.history && "pushState" in window.history;
}

module.exports = supportsHistory;