// ==UserScript==
// @name window.performance crutch
// @version 2
// @include *
// @include *.microsoft.com/*
// @exclude https://www.twitch.tv/*
// ==/UserScript==
if (!window.performance) (function(opera, empty){
var Tstart = Date.now();
var marks = [];
performance = { // https://developer.mozilla.org/en-US/docs/Web/API/Window/performance
mark: function(n){ marks.push({name:n, entryType:'mark', startTime:Date.now(), duration:123}) }
, now: Date.now
, measure: function(name, startMark, endMark) { marks.push({name:name, entryType:'measure', startTime:Date.now(), duration:12345}) }
, getEntriesByType: function(type) { return marks.filter(function(e){return e.entryType==type}) }
, getEntriesByName: function(name) { return marks.filter(function(e){return e.name==name}) }
, clearMarks: function(){ marks = marks.filter(function(e){return e.entryType!='mark'}) }
, clearMeasures: function(){ marks = marks.filter(function(e){return e.entryType!='measure'}) }
, clearResourceTimings: function(){marks=[]}
, setResourceTimingBufferSize: empty
//, onresourcetimingbufferfull https://developer.mozilla.org/en-US/docs/Web/API/Performance/onresourcetimingbufferfull
//FF only?, toJSON: function() { return JSON.stringify({timing:performance.timing, navigation:performance.navigation})}
, timing: {
navigationStart:Tstart, fetchStart:Tstart, domainLookupStart:Tstart, domainLookupEnd:Tstart, connectStart:Tstart, connectEnd: Tstart
, requestStart: Tstart, responseStart: Tstart, responseEnd: Tstart, domLoading:Tstart, domInteractive:Tstart, domContentLoadedEventStart:Tstart
, domContentLoadedEventEnd: Tstart, domComplete:Tstart
, loadEventStart:0, loadEventEnd: 0
, secureConnectionStart:0
, unloadEventStart:0, unloadEventEnd:0, redirectStart:0, redirectEnd:0
// , toJSON: function(){}
}/**/
, navigation: {type:0,redirectCount:0 /*,toJSON*/ }
}
})(opera, function(){})
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