luda/dist/js/luda-degradation.min.js

A library helps to build cross-framework UI components.

/*! 
 * Luda degradation script 0.3.3 | https://oatw.github.io/luda
 * Copyright 2019 - 2020 Oatw
 * MIT license | http://opensource.org/licenses/MIT
 */
(function(global,factory){typeof exports==="object"&&typeof module!=="undefined"?factory():typeof define==="function"&&define.amd?define(factory):factory()})(this,function(){"use strict";var Degradation;Degradation={_URL_ATTRIBUTE:"data-degradation-url",_HTML:['<div id="luda-degradation-html" ','style="padding:100px 30px;text-align:center">',"<h1>Your Browser is Too Old!</h1>","<p>","Please visit this site with a modern browser ",'<a target="_blank" href="https://www.google.com/chrome/">',"(Chrome is recommended)","</a>",".</p>","</div>"].join(""),_CSS_PROPERTIES:[{display:"flex",position:["sticky||-webkit-sticky","fixed"]},"transition","animation"],_JS_PROPERTIES:{es6Class:"class X {}",es6ArrowFunction:"((x) => x)()",mutationObserver:"new MutationObserver(function(){})",proxy:"new Proxy({},{})",performance:"performance.clearMarks()"},_NOTIFY_MILLSECONDS:500,check:function(){this._checkEnv();this._checkJS(this._JS_PROPERTIES);return this._checkCSS(this._CSS_PROPERTIES)},_eval:function(script){var geval;geval=eval;script="(function(){"+script+"})()";return geval(script)},_checkEnv:function(){if(typeof document!=="undefined"){if(typeof window!=="undefined"){return window}if(typeof global!=="undefined"){return global}}throw new Error("Unsupported runtime environment.")},_checkJS:function(properties){var err,property,results,value;results=[];for(property in properties){value=properties[property];try{results.push(this._eval(value))}catch(error){err=error;this._notify();throw new Error(property+" "+err)}}return results},_checkCSS:function(properties){var ele,i,len,name,property,results,value,valueEle;ele=document.createElement("div");results=[];for(i=0,len=properties.length;i<len;i++){property=properties[i];if(typeof property==="string"){results.push(this._CSSPropertySupported(ele,property))}else{results.push(function(){var results1;results1=[];for(name in property){value=property[name];this._CSSPropertySupported(ele,name);if(value instanceof Array){results1.push(function(){var j,len1,results2;results2=[];for(j=0,len1=value.length;j<len1;j++){valueEle=value[j];results2.push(this._CSSValueSupported(ele,name,valueEle))}return results2}.call(this))}else{results1.push(this._CSSValueSupported(ele,name,value))}}return results1}.call(this))}}return results},_CSSPropertySupported:function(ele,property){if(typeof ele.style[property]!=="string"){this._notify();throw new Error("Unsupported CSS property: "+property)}},_CSSValueSupported:function(ele,property,valueStr){var i,len,value,values;values=valueStr.split("||");for(i=0,len=values.length;i<len;i++){value=values[i];ele.style[property]=value;if(ele.style[property]===value){return}}this._notify();throw new Error("Unsupported CSS property value: "+property+" "+valueStr)},_notify:function(){var _self,i,len,redirectUrl,ref,script;redirectUrl=document.documentElement.getAttribute(this._URL_ATTRIBUTE);if(redirectUrl){return location.href=redirectUrl}ref=document.scripts;for(i=0,len=ref.length;i<len;i++){script=ref[i];redirectUrl=script.getAttribute(this._URL_ATTRIBUTE);if(redirectUrl){return location.href=redirectUrl}}_self=this;return setInterval(function(){if(!document.getElementById("luda-degradation-html")){if(document.body){return document.body.innerHTML=_self._HTML}}},this._NOTIFY_MILLSECONDS)}};Degradation.check()});
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