2 lines
2.8 KiB
JavaScript
2 lines
2.8 KiB
JavaScript
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/*! instant.page v5.1.0 - (C) 2019-2020 Alexandre Dieulot - https://instant.page/license */
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let t,e;const n=new Set,o=document.createElement("link"),i=o.relList&&o.relList.supports&&o.relList.supports("prefetch")&&window.IntersectionObserver&&"isIntersecting"in IntersectionObserverEntry.prototype,s="instantAllowQueryString"in document.body.dataset,a="instantAllowExternalLinks"in document.body.dataset,r="instantWhitelist"in document.body.dataset,c="instantMousedownShortcut"in document.body.dataset,d=1111;let l=65,u=!1,f=!1,m=!1;if("instantIntensity"in document.body.dataset){const t=document.body.dataset.instantIntensity;if("mousedown"==t.substr(0,"mousedown".length))u=!0,"mousedown-only"==t&&(f=!0);else if("viewport"==t.substr(0,"viewport".length))navigator.connection&&(navigator.connection.saveData||navigator.connection.effectiveType&&navigator.connection.effectiveType.includes("2g"))||("viewport"==t?document.documentElement.clientWidth*document.documentElement.clientHeight<45e4&&(m=!0):"viewport-all"==t&&(m=!0));else{const e=parseInt(t);isNaN(e)||(l=e)}}if(i){const n={capture:!0,passive:!0};if(f||document.addEventListener("touchstart",function(t){e=performance.now();const n=t.target.closest("a");if(!h(n))return;v(n.href)},n),u?c||document.addEventListener("mousedown",function(t){const e=t.target.closest("a");if(!h(e))return;v(e.href)},n):document.addEventListener("mouseover",function(n){if(performance.now()-e<d)return;const o=n.target.closest("a");if(!h(o))return;o.addEventListener("mouseout",p,{passive:!0}),t=setTimeout(()=>{v(o.href),t=void 0},l)},n),c&&document.addEventListener("mousedown",function(t){if(performance.now()-e<d)return;const n=t.target.closest("a");if(t.which>1||t.metaKey||t.ctrlKey)return;if(!n)return;n.addEventListener("click",function(t){1337!=t.detail&&t.preventDefault()},{capture:!0,passive:!1,once:!0});const o=new MouseEvent("click",{view:window,bubbles:!0,cancelable:!1,detail:1337});n.dispatchEvent(o)},n),m){let t;(t=window.requestIdleCallback?t=>{requestIdleCallback(t,{timeout:1500})}:t=>{t()})(()=>{const t=new IntersectionObserver(e=>{e.forEach(e=>{if(e.isIntersecting){const n=e.target;t.unobserve(n),v(n.href)}})});document.querySelectorAll("a").forEach(e=>{h(e)&&t.observe(e)})})}}function p(e){e.relatedTarget&&e.target.closest("a")==e.relatedTarget.closest("a")||t&&(clearTimeout(t),t=void 0)}function h(t){if(t&&t.href&&(!r||"instant"in t.dataset)&&(a||t.origin==location.origin||"instant"in t.dataset)&&["http:","https:"].includes(t.protocol)&&("http:"!=t.protocol||"https:"!=location.protocol)&&(s||!t.search||"instant"in t.dataset)&&!(t.hash&&t.pathname+t.search==location.pathname+location.search||"noInstant"in t.dataset))return!0}function v(t){if(n.has(t))return;const e=document.createElement("link");e.rel="prefetch",e.href=t,document.head.appendChild(e),n.add(t)}
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