| var t,n,e=function(){return"".concat(Date.now(),"-").concat(Math.floor(8999999999999*Math.random())+1e12)},i=function(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:-1;return{name:t,value:n,delta:0,entries:[],id:e(),isFinal:!1}},a=function(t,n){try{if(PerformanceObserver.supportedEntryTypes.includes(t)){var e=new PerformanceObserver((function(t){return t.getEntries().map(n)}));return e.observe({type:t,buffered:!0}),e}}catch(t){}},r=!1,o=!1,s=function(t){r=!t.persisted},u=function(){addEventListener("pagehide",s),addEventListener("beforeunload",(function(){}))},c=function(t){var n=arguments.length>1&&void 0!==arguments[1]&&arguments[1];o||(u(),o=!0),addEventListener("visibilitychange",(function(n){var e=n.timeStamp;"hidden"===document.visibilityState&&t({timeStamp:e,isUnloading:r})}),{capture:!0,once:n})},l=function(t,n,e,i){var a;return function(){e&&n.isFinal&&e.disconnect(),n.value>=0&&(i||n.isFinal||"hidden"===document.visibilityState)&&(n.delta=n.value-(a||0),(n.delta||n.isFinal||void 0===a)&&(t(n),a=n.value))}},p=function(t){var n,e=arguments.length>1&&void 0!==arguments[1]&&arguments[1],r=i("CLS",0),o=function(t){t.hadRecentInput||(r.value+=t.value,r.entries.push(t),n())},s=a("layout-shift",o);s&&(n=l(t,r,s,e),c((function(t){var e=t.isUnloading;s.takeRecords().map(o),e&&(r.isFinal=!0),n()})))},d=function(){return void 0===t&&(t="hidden"===document.visibilityState?0:1/0,c((function(n){var e=n.timeStamp;return t=e}),!0)),{get timeStamp(){return t}}},v=function(t){var n,e=i("FCP"),r=d(),o=a("paint",(function(t){"first-contentful-paint"===t.name&&t.startTime<r.timeStamp&&(e.value=t.startTime,e.isFinal=!0,e.entries.push(t),n())}));o&&(n=l(t,e,o))},f=function(t){var n=i("FID"),e=d(),r=function(t){t.startTime<e.timeStamp&&(n.value=t.processingStart-t.startTime,n.entries.push(t),n.isFinal=!0,s())},o=a("first-input",r),s=l(t,n,o);o?c((function(){o.takeRecords().map(r),o.disconnect()}),!0):window.perfMetrics&&window.perfMetrics.onFirstInputDelay&&window.perfMetrics.onFirstInputDelay((function(t,i){i.timeStamp<e.timeStamp&&(n.value=t,n.isFinal=!0,n.entries=[{entryType:"first-input",name:i.type,target:i.target,cancelable:i.cancelable,startTime:i.timeStamp,processingStart:i.timeStamp+t}],s())}))},m=function(){return n||(n=new Promise((function(t){return["scroll","keydown","pointerdown"].map((function(n){addEventListener(n,t,{once:!0,passive:!0,capture:!0})}))}))),n},g=function(t){var n,e=arguments.length>1&&void 0!==arguments[1]&&arguments[1],r=i("LCP"),o=d(),s=function(t){var e=t.startTime;e<o.timeStamp?(r.value=e,r.entries.push(t)):r.isFinal=!0,n()},u=a("largest-contentful-paint",s);if(u){n=l(t,r,u,e);var p=function(){r.isFinal||(u.takeRecords().map(s),r.isFinal=!0,n())};m().then(p),c(p,!0)}},h=function(t){var n,e=i("TTFB");n=function(){try{var n=performance.getEntriesByType("navigation")[0]||function(){var t=performance.timing,n={entryType:"navigation",startTime:0};for(var e in t)"navigationStart"!==e&&"toJSON"!==e&&(n[e]=Math.max(t[e]-t.navigationStart,0));return n}();e.value=e.delta=n.responseStart,e.entries=[n],e.isFinal=!0,t(e)}catch(t){}},"complete"===document.readyState?setTimeout(n,0):addEventListener("pageshow",n)};export{p as getCLS,v as getFCP,f as getFID,g as getLCP,h as getTTFB}; |