1 line
3.8 KiB
Plaintext
1 line
3.8 KiB
Plaintext
let _allowQueryString,_allowExternalLinks,_useWhitelist,_lastTouchTimestamp,_mouseoverTimer,_chromiumMajorVersionInUserAgent=null,_delayOnHover=65,_preloadedList=new Set;const DELAY_TO_NOT_BE_CONSIDERED_A_TOUCH_INITIATED_ACTION=1111;function init(){if(!document.createElement("link").relList.supports("prefetch"))return;const e="instantVaryAccept"in document.body.dataset||"Shopify"in window,t=navigator.userAgent.indexOf("Chrome/");if(t>-1&&(_chromiumMajorVersionInUserAgent=parseInt(navigator.userAgent.substring(t+"Chrome/".length))),e&&_chromiumMajorVersionInUserAgent&&_chromiumMajorVersionInUserAgent<110)return;const n="instantMousedownShortcut"in document.body.dataset;_allowQueryString="instantAllowQueryString"in document.body.dataset,_allowExternalLinks="instantAllowExternalLinks"in document.body.dataset,_useWhitelist="instantWhitelist"in document.body.dataset;const o={capture:!0,passive:!0};let r=!1,i=!1,s=!1;if("instantIntensity"in document.body.dataset){const e=document.body.dataset.instantIntensity;if(e.startsWith("mousedown"))r=!0,"mousedown-only"==e&&(i=!0);else if(e.startsWith("viewport")){const t=navigator.connection&&navigator.connection.saveData,n=navigator.connection&&navigator.connection.effectiveType&&navigator.connection.effectiveType.includes("2g");t||n||("viewport"==e?document.documentElement.clientWidth*document.documentElement.clientHeight<45e4&&(s=!0):"viewport-all"==e&&(s=!0))}else{const t=parseInt(e);isNaN(t)||(_delayOnHover=t)}}if(i||document.addEventListener("touchstart",touchstartListener,o),r?n||document.addEventListener("mousedown",mousedownListener,o):document.addEventListener("mouseover",mouseoverListener,o),n&&document.addEventListener("mousedown",mousedownShortcutListener,o),s){let e=window.requestIdleCallback;e||(e=e=>{e()}),e((function(){const e=new IntersectionObserver((t=>{t.forEach((t=>{if(t.isIntersecting){const n=t.target;e.unobserve(n),preload(n.href)}}))}));document.querySelectorAll("a").forEach((t=>{isPreloadable(t)&&e.observe(t)}))}),{timeout:1500})}}function touchstartListener(e){_lastTouchTimestamp=performance.now();const t=e.target.closest("a");isPreloadable(t)&&preload(t.href,"high")}function mouseoverListener(e){if(performance.now()-_lastTouchTimestamp<1111)return;if(!("closest"in e.target))return;const t=e.target.closest("a");isPreloadable(t)&&(t.addEventListener("mouseout",mouseoutListener,{passive:!0}),_mouseoverTimer=setTimeout((()=>{preload(t.href,"high"),_mouseoverTimer=void 0}),_delayOnHover))}function mousedownListener(e){const t=e.target.closest("a");isPreloadable(t)&&preload(t.href,"high")}function mouseoutListener(e){e.relatedTarget&&e.target.closest("a")==e.relatedTarget.closest("a")||_mouseoverTimer&&(clearTimeout(_mouseoverTimer),_mouseoverTimer=void 0)}function mousedownShortcutListener(e){if(performance.now()-_lastTouchTimestamp<1111)return;const t=e.target.closest("a");if(e.which>1||e.metaKey||e.ctrlKey)return;if(!t)return;t.addEventListener("click",(function(e){1337!=e.detail&&e.preventDefault()}),{capture:!0,passive:!1,once:!0});const n=new MouseEvent("click",{view:window,bubbles:!0,cancelable:!1,detail:1337});t.dispatchEvent(n)}function isPreloadable(e){if(e&&e.href&&(!_useWhitelist||"instant"in e.dataset)){if(e.origin!=location.origin){if(!(_allowExternalLinks||"instant"in e.dataset)||!_chromiumMajorVersionInUserAgent)return}if(["http:","https:"].includes(e.protocol)&&("http:"!=e.protocol||"https:"!=location.protocol)&&(_allowQueryString||!e.search||"instant"in e.dataset)&&!(e.hash&&e.pathname+e.search==location.pathname+location.search||"noInstant"in e.dataset))return!0}}function preload(e,t="auto"){if(_preloadedList.has(e))return;if("function"==typeof swcfpc_can_url_be_prefetched&&!1===swcfpc_can_url_be_prefetched(e.split("#")[0]))return;const n=document.createElement("link");n.rel="prefetch",n.href=e,n.fetchPriority=t,n.as="document",document.head.appendChild(n),_preloadedList.add(e)}init(); |