Minyfied version of instant.page

[aangeletakis]

let urlToPreload,mouseoverTimer,lastTouchTimestamp;const prefetcher=document.createElement("link"),isSupported=prefetcher.relList&&prefetcher.relList.supports&&prefetcher.relList.supports("prefetch"),allowQueryString="instantAllowQueryString"in document.body.dataset;if(isSupported){prefetcher.rel="prefetch",document.head.appendChild(prefetcher);const e={capture:!0,passive:!0};document.addEventListener("touchstart",touchstartListener,e),document.addEventListener("mouseover",mouseoverListener,e)}function touchstartListener(e){lastTouchTimestamp=performance.now();const t=e.target.closest("a");t&&isPreloadable(t)&&(t.addEventListener("touchcancel",touchendAndTouchcancelListener,{passive:!0}),t.addEventListener("touchend",touchendAndTouchcancelListener,{passive:!0}),urlToPreload=t.href,preload(t.href))}function touchendAndTouchcancelListener(){urlToPreload=void 0,stopPreloading()}function mouseoverListener(e){if(performance.now()-lastTouchTimestamp<1100)return;const t=e.target.closest("a");t&&isPreloadable(t)&&(t.addEventListener("mouseout",mouseoutListener,{passive:!0}),urlToPreload=t.href,mouseoverTimer=setTimeout(()=>{preload(t.href),mouseoverTimer=void 0},65))}function mouseoutListener(e){e.relatedTarget&&e.target.closest("a")==e.relatedTarget.closest("a")||(mouseoverTimer?(clearTimeout(mouseoverTimer),mouseoverTimer=void 0):(urlToPreload=void 0,stopPreloading()))}function isPreloadable(e){if(urlToPreload==e.href)return;const t=new URL(e.href);return!(t.origin!=location.origin||!(allowQueryString||!t.search||"instant"in e.dataset)||t.hash&&t.pathname+t.search==location.pathname+location.search||"noInstant"in e.dataset)||void 0}function preload(e){prefetcher.href=e}function stopPreloading(){prefetcher.removeAttribute("href")}

[dieulot]

instant.page fits in a single TCP packet anyway so there’s no need for minification.

[Paul-Browne]

But a browser will parse it quicker if their is less js...

[PikachuEXE]

@Paul-Browne Is there any study/benchmark/data showing this I would love to see more :)