predictive-prefetch.min.js

/*! predictive-prefetch.min.js – Modified version of instant.page v5.2.0 | © 2019–2024 Alexandre Dieulot (MIT) | https://instant.page/license |
© 2025 Affluent Web Media (Apache-2.0) | https://affluentwebmedia.com */

document.addEventListener('DOMContentLoaded',function(){const blacklist=["_HOME_","/folder1/","/folder2/","/about","/contact"];const s=window.matchMedia("(pointer:coarse)").matches?55:100;let pc=0;const pm=3;const pt=throttle(p,500);function isUncacheable(res){const cc=(res.headers.get("Cache-Control")||"").toLowerCase(),exp=res.headers.get("Expires");return cc.includes("no-cache")||cc.includes("no-store")||cc.includes("max-age=0")||(exp&&!isNaN(Date.parse(exp))&&Date.parse(exp)<Date.now());}
function throttle(fn,limit){let last=0;return function(...args){const now=Date.now();const dLimit=limit*Math.pow(2,Math.max(0,pc-1));if(now-last>=dLimit){last=now;fn.apply(this,args);}};}
let t,e,n,o,i,a=null,c=new Set;const r=1111;function d(t){o=performance.now();const e=t.target.closest("a");m(e)&&pt(e.href,"high")}function u(t){if(performance.now()-o<r)return;if(!("closest"in t.target))return;const e=t.target.closest("a");m(e)&&(e.addEventListener("mouseout",f,{passive:!0}),i=setTimeout(()=>{pt(e.href,"high"),i=void 0},s))}function l(t){const e=t.target.closest("a");m(e)&&pt(e.href,"high")}function f(t){t.relatedTarget&&t.target.closest("a")==t.relatedTarget.closest("a")||i&&(clearTimeout(i),i=void 0)}function h(t){if(performance.now()-o<r)return;const e=t.target.closest("a");if(t.which>1||t.metaKey||t.ctrlKey)return;if(!e)return;e.addEventListener("click",function(t){1337!=t.detail&&t.preventDefault()},{capture:!0,passive:!1,once:!0});const n=new MouseEvent("click",{view:window,bubbles:!0,cancelable:!1,detail:1337});e.dispatchEvent(n)}
function m(o){if(!o||!o.href)return!1;const pn=o.pathname;for(let i=0;i<blacklist.length;i++){const bp=blacklist[i];if(bp==="_HOME_"&&pn==="/")return!1;if(bp.endsWith("/")?pn.startsWith(bp):pn===bp)return!1;}if(o&&o.href&&(!n||"instant"in o.dataset)){if(o.origin!=location.origin){if(!(e||"instant"in o.dataset)||!a)return}if(["http:","https:"].includes(o.protocol)&&("http:"!=o.protocol||"https:"!=location.protocol)&&(t||!o.search||"instant"in o.dataset)&&!(o.hash&&pn+o.search==location.pathname+location.search||"noInstant"in o.dataset))return!0}return!1;}
function p(t,e="auto"){if(c.has(t)||pc>=pm)return;caches.match(t).then(match=>{if(match)return;const n=new AbortController();fetch(t,{method:"HEAD",credentials:"same-origin",cache:"default",signal:n.signal}).then(o=>{if(!o.ok||isUncacheable(o)){n.abort();return;}
const i=o.headers.get("CF-Cache-Status");if(!i||i.toUpperCase()!=="HIT"){n.abort();return;}
fetch(t,{method:"GET",credentials:"same-origin",cache:"default"}).then(()=>{c.add(t);pc++;}).catch(()=>{});}).catch(()=>{try{n.abort();}catch{}});});}!function(){if(!document.createElement("link").relList.supports("prefetch"))return;const o="instantVaryAccept"in document.body.dataset||"Shopify"in window,i=navigator.userAgent.indexOf("Chrome/");i>-1&&(a=parseInt(navigator.userAgent.substring(i+"Chrome/".length)));if(o&&a&&a<110)return;const c="instantMousedownShortcut"in document.body.dataset;t="instantAllowQueryString"in document.body.dataset,e="instantAllowExternalLinks"in document.body.dataset,n="instantWhitelist"in document.body.dataset;const r={capture:!0,passive:!0};let f=!1,v=!1,g=!1;if("instantIntensity"in document.body.dataset){const t=document.body.dataset.instantIntensity;if(t.startsWith("mousedown"))f=!0,"mousedown-only"==t&&(v=!0);else if(t.startsWith("viewport")){const e=navigator.connection&&navigator.connection.saveData,n=navigator.connection&&navigator.connection.effectiveType&&navigator.connection.effectiveType.includes("2g");e||n||("viewport"==t?document.documentElement.clientWidth*document.documentElement.clientHeight<45e4&&(g=!0):"viewport-all"==t&&(g=!0))}else{const e=parseInt(t);isNaN(e)||(s=e)}}v||document.addEventListener("touchstart",d,r);f?c||document.addEventListener("mousedown",l,r):document.addEventListener("mouseover",u,r);c&&document.addEventListener("mousedown",h,r);if(g){let t=window.requestIdleCallback;t||(t=(t=>{t()})),t(function(){const t=new IntersectionObserver(e=>{e.forEach(e=>{if(e.isIntersecting){const n=e.target;t.unobserve(n),pt(n.href)}})});document.querySelectorAll("a").forEach(e=>{m(e)&&t.observe(e)})},{timeout:1500})}}();});