bd028579
 易尊强
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var Browser = (function () {
function Browser() {
this.firefox = false;
this.ie = false;
this.edge = false;
this.newEdge = false;
this.weChat = false;
}
return Browser;
}());
var Env = (function () {
function Env() {
this.browser = new Browser();
this.node = false;
this.wxa = false;
this.worker = false;
this.svgSupported = false;
this.touchEventsSupported = false;
this.pointerEventsSupported = false;
this.domSupported = false;
this.transformSupported = false;
this.transform3dSupported = false;
this.hasGlobalWindow = typeof window !== 'undefined';
}
return Env;
}());
var env = new Env();
if (typeof wx === 'object' && typeof wx.getSystemInfoSync === 'function') {
env.wxa = true;
env.touchEventsSupported = true;
}
else if (typeof document === 'undefined' && typeof self !== 'undefined') {
env.worker = true;
}
else if (typeof navigator === 'undefined'
|| navigator.userAgent.indexOf('Node.js') === 0) {
env.node = true;
env.svgSupported = true;
}
else {
detect(navigator.userAgent, env);
}
function detect(ua, env) {
var browser = env.browser;
var firefox = ua.match(/Firefox\/([\d.]+)/);
var ie = ua.match(/MSIE\s([\d.]+)/)
|| ua.match(/Trident\/.+?rv:(([\d.]+))/);
var edge = ua.match(/Edge?\/([\d.]+)/);
var weChat = (/micromessenger/i).test(ua);
if (firefox) {
browser.firefox = true;
browser.version = firefox[1];
}
if (ie) {
browser.ie = true;
browser.version = ie[1];
}
if (edge) {
browser.edge = true;
browser.version = edge[1];
browser.newEdge = +edge[1].split('.')[0] > 18;
}
if (weChat) {
browser.weChat = true;
}
env.svgSupported = typeof SVGRect !== 'undefined';
env.touchEventsSupported = 'ontouchstart' in window && !browser.ie && !browser.edge;
env.pointerEventsSupported = 'onpointerdown' in window
&& (browser.edge || (browser.ie && +browser.version >= 11));
env.domSupported = typeof document !== 'undefined';
var style = document.documentElement.style;
env.transform3dSupported = ((browser.ie && 'transition' in style)
|| browser.edge
|| (('WebKitCSSMatrix' in window) && ('m11' in new WebKitCSSMatrix()))
|| 'MozPerspective' in style)
&& !('OTransition' in style);
env.transformSupported = env.transform3dSupported
|| (browser.ie && +browser.version >= 9);
}
export default env;
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