tti-polyfill-debug.js

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function D(a){a=a?a:{};this.w=!!a.useMutationObserver;this.v=a.minValue||null;a=window.__tti&&window.__tti.e;var b=window.__tti&&window.__tti.o;a?(B("Consuming the long task entries already recorded."),this.a=a.map(function(a){return{start:a.startTime,end:a.startTime+a.duration}})):this.a=[];b&&b.disconnect();this.c=[];this.b=new Map;this.l=null;this.j=-Infinity;this.i=!1;this.h=this.g=this.u=null;w(this.s.bind(this),this.m.bind(this));x(this.s.bind(this),this.m.bind(this));E(this);this.w&&(this.h=
A(this.B.bind(this)))}D.prototype.getFirstConsistentlyInteractive=function(){var a=this;return new Promise(function(b){a.u=b;"complete"==document.readyState?G(a):window.addEventListener("load",function(){G(a)})})};function G(a){B("Enabling FirstConsistentlyInteractiveDetector");a.i=!0;var b=0<a.a.length?a.a[a.a.length-1].end:0,c=C(a.f,a.c);H(a,Math.max(c+5E3,b))}
function H(a,b){a.i?(B("Attempting to reschedule FirstConsistentlyInteractive check to "+b),B("Previous timer activation time: "+a.j),a.j>b?B("Current activation time is greater than attempted reschedule time. No need to postpone."):(clearTimeout(a.l),a.l=setTimeout(function(){B("Checking if First Consistently Interactive was reached...");var b=performance.timing.navigationStart,d=C(a.f,a.c),l=(window.a&&window.a.A?1E3*window.a.A().C-b:0)||performance.timing.domContentLoadedEventEnd-b;if(a.v)var f=
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(d=b.length?b[b.length-1].end:l,d=5E3>g-d?null:Math.max(d,f));d&&(a.u(d),B("Disabling FirstConsistentlyInteractiveDetector"),clearTimeout(a.l),a.i=!1,a.g&&a.g.disconnect(),a.h&&a.h.disconnect());B("Could not detect First Consistently Interactive. Retrying in 1 second.");H(a,performance.now()+1E3)},b-performance.now()),a.j=b,B("Rescheduled firstConsistentlyInteractive check at "+b))):B("startSchedulingTimerTasks must be called before calling rescheduleTimer")}
function E(a){a.g=new PerformanceObserver(function(b){b=t(b.getEntries());for(var c=b.next();!c.done;c=b.next())if(c=c.value,"resource"===c.entryType&&(B("Network request finished",c),a.c.push({start:c.fetchStart,end:c.responseEnd}),H(a,C(a.f,a.c)+5E3)),"longtask"===c.entryType){B("Long task finished",c);var d=c.startTime+c.duration;a.a.push({start:c.startTime,end:d});H(a,d+5E3)}});a.g.observe({entryTypes:["longtask","resource"]})}
D.prototype.s=function(a){B("Starting JS initiated request. Request ID: "+a);this.b.set(a,performance.now());B("Active XHRs: "+this.b.size)};D.prototype.m=function(a){B("Completed JS initiated request with request ID: "+a);this.b.delete(a);B("Active XHRs: "+this.b.size)};D.prototype.B=function(a){B("Potentially network resource fetching mutation detected",a);B("Pushing back FirstConsistentlyInteractive check by 5 seconds.");H(this,performance.now()+5E3)};
e.Object.defineProperties(D.prototype,{f:{configurable:!0,enumerable:!0,get:function(){return[].concat(u(this.b.values()))}}});var I={getFirstConsistentlyInteractive:function(a){a=a?a:{};return"PerformanceLongTaskTiming"in window?(new D(a)).getFirstConsistentlyInteractive():Promise.resolve(null)}};"undefined"!=typeof module&&module.exports?module.exports=I:"function"===typeof define&&define.amd?define("ttiPolyfill",[],function(){return I}):window.ttiPolyfill=I;})();
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