text: import {svgCreate} from '../layer/vector/SVG.Util';
  
  /*
   * @namespace Browser
   * @aka L.Browser
   *
   * A namespace with static properties for browser/feature detection used by Leaflet internally.
   *
   * @example
   *
   * ```js
   * if (L.Browser.ielt9) {
   *   alert('Upgrade your browser, dude!');
   * }
   * ```
   */
  
  var style = document.documentElement.style;
  
  // @property ie: Boolean; `true` for all Internet Explorer versions (not Edge).
  export var ie = 'ActiveXObject' in window;
  
  // @property ielt9: Boolean; `true` for Internet Explorer versions less than 9.
  export var ielt9 = ie && !document.addEventListener;
  
  // @property edge: Boolean; `true` for the Edge web browser.
  export var edge = 'msLaunchUri' in navigator && !('documentMode' in document);
  
  // @property webkit: Boolean;
  // `true` for webkit-based browsers like Chrome and Safari (including mobile versions).
  export var webkit = userAgentContains('webkit');
  
  // @property android: Boolean
  // `true` for any browser running on an Android platform.
  export var android = userAgentContains('android');
  
  // @property android23: Boolean; `true` for browsers running on Android 2 or Android 3.
  export var android23 = userAgentContains('android 2') || userAgentContains('android 3');
  
  // @property opera: Boolean; `true` for the Opera browser
  export var opera = !!window.opera;
  
  // @property chrome: Boolean; `true` for the Chrome browser.
  export var chrome = userAgentContains('chrome');
  
  // @property gecko: Boolean; `true` for gecko-based browsers like Firefox.
  export var gecko = userAgentContains('gecko') && !webkit && !opera && !ie;
  
  // @property safari: Boolean; `true` for the Safari browser.
  export var safari = !chrome && userAgentContains('safari');
  
  export var phantom = userAgentContains('phantom');
  
  // @property opera12: Boolean
  // `true` for the Opera browser supporting CSS transforms (version 12 or later).
  export var opera12 = 'OTransition' in style;
  
  // @property win: Boolean; `true` when the browser is running in a Windows platform
  export var win = navigator.platform.indexOf('Win') === 0;
  
  // @property ie3d: Boolean; `true` for all Internet Explorer versions supporting CSS transforms.
  export var ie3d = ie && ('transition' in style);
  
  // @property webkit3d: Boolean; `true` for webkit-based browsers supporting CSS transforms.
  export var webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()) && !android23;
  
  // @property gecko3d: Boolean; `true` for gecko-based browsers supporting CSS transforms.
  export var gecko3d = 'MozPerspective' in style;
  
  // @property any3d: Boolean
  // `true` for all browsers supporting CSS transforms.
  export var any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d) && !opera12 && !phantom;
  
  // @property mobile: Boolean; `true` for all browsers running in a mobile device.
  export var mobile = typeof orientation !== 'undefined' || userAgentContains('mobile');
  
  // @property mobileWebkit: Boolean; `true` for all webkit-based browsers in a mobile device.
  export var mobileWebkit = mobile && webkit;
  
  // @property mobileWebkit3d: Boolean
  // `true` for all webkit-based browsers in a mobile device supporting CSS transforms.
  export var mobileWebkit3d = mobile && webkit3d;
  
  // @property msPointer: Boolean
  // `true` for browsers implementing the Microsoft touch events model (notably IE10).
  export var msPointer = !window.PointerEvent && window.MSPointerEvent;
  
  // @property pointer: Boolean
  // `true` for all browsers supporting [pointer events](https://msdn.microsoft.com/en-us/library/dn433244%28v=vs.85%29.aspx).
  export var pointer = !!(window.PointerEvent || msPointer);
  
  // @property touch: Boolean
  // `true` for all browsers supporting [touch events](https://developer.mozilla.org/docs/Web/API/Touch_events).
  // This does not necessarily mean that the browser is running in a computer with
  // a touchscreen, it only means that the browser is capable of understanding
  // touch events.
  export var touch = !window.L_NO_TOUCH && (pointer || 'ontouchstart' in window ||
  		(window.DocumentTouch && document instanceof window.DocumentTouch));
  
  // @property mobileOpera: Boolean; `true` for the Opera browser in a mobile device.
  export var mobileOpera = mobile && opera;
  
  // @property mobileGecko: Boolean
  // `true` for gecko-based browsers running in a mobile device.
  export var mobileGecko = mobile && gecko;
  
  // @property retina: Boolean
  // `true` for browsers on a high-resolution "retina" screen.
  export var retina = (window.devicePixelRatio || (window.screen.deviceXDPI / window.screen.logicalXDPI)) > 1;
  
  
  // @property canvas: Boolean
  // `true` when the browser supports [`<canvas>`](https://developer.mozilla.org/docs/Web/API/Canvas_API).
  export var canvas = (function () {
  	return !!document.createElement('canvas').getContext;
  }());
  
  // @property svg: Boolean
  // `true` when the browser supports [SVG](https://developer.mozilla.org/docs/Web/SVG).
  export var svg = !!(document.createElementNS && svgCreate('svg').createSVGRect);
  
  // @property vml: Boolean
  // `true` if the browser supports [VML](https://en.wikipedia.org/wiki/Vector_Markup_Language).
  export var vml = !svg && (function () {
  	try {
  		var div = document.createElement('div');
  		div.innerHTML = '<v:shape adj="1"/>';
  
  		var shape = div.firstChild;
  		shape.style.behavior = 'url(#default#VML)';
  
  		return shape && (typeof shape.adj === 'object');
  
  	} catch (e) {
  		return false;
  	}
  }());
  
  
  function userAgentContains(str) {
  	return navigator.userAgent.toLowerCase().indexOf(str) >= 0;
  }
  