Merge pull request #65 from matsuyoshi30/use-instant.min

Fix #63

3 files changed, 3 insertions, 203 deletions

diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 006149a..746961a 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -18,5 +18,5 @@
 {{ end }}
 <!-- script -->
 <script src="{{ .Site.BaseURL }}js/bundle.js"></script>
-<script src="{{ .Site.BaseURL }}js/instantpage.js" type="module" defer></script>
+<script src="{{ .Site.BaseURL }}js/instantpage.min.js" type="module" defer></script>
 {{ hugo.Generator -}}
diff --git a/static/js/instantpage.js b/static/js/instantpage.js
deleted file mode 100644
index 78a5480..0000000
--- a/static/js/instantpage.js
+++ /dev/null
@@ -1,202 +0,0 @@
-/*! instant.page v3.0.0 - (C) 2019 Alexandre Dieulot - https://instant.page/license */
-
-let mouseoverTimer
-let lastTouchTimestamp
-const prefetches = new Set()
-const prefetchElement = document.createElement('link')
-const isSupported = prefetchElement.relList && prefetchElement.relList.supports && prefetchElement.relList.supports('prefetch')
-                    && window.IntersectionObserver && 'isIntersecting' in IntersectionObserverEntry.prototype
-const allowQueryString = 'instantAllowQueryString' in document.body.dataset
-const allowExternalLinks = 'instantAllowExternalLinks' in document.body.dataset
-const useWhitelist = 'instantWhitelist' in document.body.dataset
-
-let delayOnHover = 65
-let useMousedown = false
-let useMousedownOnly = false
-let useViewport = false
-if ('instantIntensity' in document.body.dataset) {
-  const intensity = document.body.dataset.instantIntensity
-
-  if (intensity.substr(0, 'mousedown'.length) == 'mousedown') {
-    useMousedown = true
-    if (intensity == 'mousedown-only') {
-      useMousedownOnly = true
-    }
-  }
-  else if (intensity.substr(0, 'viewport'.length) == 'viewport') {
-    if (!(navigator.connection && (navigator.connection.saveData || navigator.connection.effectiveType.includes('2g')))) {
-      if (intensity == "viewport") {
-        /* Biggest iPhone resolution (which we want): 414 × 896 = 370944
-         * Small 7" tablet resolution (which we don’t want): 600 × 1024 = 614400
-         * Note that the viewport (which we check here) is smaller than the resolution due to the UI’s chrome */
-        if (document.documentElement.clientWidth * document.documentElement.clientHeight < 450000) {
-          useViewport = true
-        }
-      }
-      else if (intensity == "viewport-all") {
-        useViewport = true
-      }
-    }
-  }
-  else {
-    const milliseconds = parseInt(intensity)
-    if (!isNaN(milliseconds)) {
-      delayOnHover = milliseconds
-    }
-  }
-}
-
-if (isSupported) {
-  const eventListenersOptions = {
-    capture: true,
-    passive: true,
-  }
-
-  if (!useMousedownOnly) {
-    document.addEventListener('touchstart', touchstartListener, eventListenersOptions)
-  }
-
-  if (!useMousedown) {
-    document.addEventListener('mouseover', mouseoverListener, eventListenersOptions)
-  }
-  else {
-    document.addEventListener('mousedown', mousedownListener, eventListenersOptions)
-  }
-
-  if (useViewport) {
-    let triggeringFunction
-    if (window.requestIdleCallback) {
-      triggeringFunction = (callback) => {
-        requestIdleCallback(callback, {
-          timeout: 1500,
-        })
-      }
-    }
-    else {
-      triggeringFunction = (callback) => {
-        callback()
-      }
-    }
-
-    triggeringFunction(() => {
-      const intersectionObserver = new IntersectionObserver((entries) => {
-        entries.forEach((entry) => {
-          if (entry.isIntersecting) {
-            const linkElement = entry.target
-            intersectionObserver.unobserve(linkElement)
-            preload(linkElement.href)
-          }
-        })
-      })
-
-      document.querySelectorAll('a').forEach((linkElement) => {
-        if (isPreloadable(linkElement)) {
-          intersectionObserver.observe(linkElement)
-        }
-      })
-    })
-  }
-}
-
-function touchstartListener(event) {
-  /* Chrome on Android calls mouseover before touchcancel so `lastTouchTimestamp`
-   * must be assigned on touchstart to be measured on mouseover. */
-  lastTouchTimestamp = performance.now()
-
-  const linkElement = event.target.closest('a')
-
-  if (!isPreloadable(linkElement)) {
-    return
-  }
-
-  preload(linkElement.href)
-}
-
-function mouseoverListener(event) {
-  if (performance.now() - lastTouchTimestamp < 1100) {
-    return
-  }
-
-  const linkElement = event.target.closest('a')
-
-  if (!isPreloadable(linkElement)) {
-    return
-  }
-
-  linkElement.addEventListener('mouseout', mouseoutListener, {passive: true})
-
-  mouseoverTimer = setTimeout(() => {
-    preload(linkElement.href)
-    mouseoverTimer = undefined
-  }, delayOnHover)
-}
-
-function mousedownListener(event) {
-  const linkElement = event.target.closest('a')
-
-  if (!isPreloadable(linkElement)) {
-    return
-  }
-
-  preload(linkElement.href)
-}
-
-function mouseoutListener(event) {
-  if (event.relatedTarget && event.target.closest('a') == event.relatedTarget.closest('a')) {
-    return
-  }
-
-  if (mouseoverTimer) {
-    clearTimeout(mouseoverTimer)
-    mouseoverTimer = undefined
-  }
-}
-
-function isPreloadable(linkElement) {
-  if (!linkElement || !linkElement.href) {
-    return
-  }
-
-  if (useWhitelist && !('instant' in linkElement.dataset)) {
-    return
-  }
-
-  if (!allowExternalLinks && linkElement.origin != location.origin && !('instant' in linkElement.dataset)) {
-    return
-  }
-
-  if (!['http:', 'https:'].includes(linkElement.protocol)) {
-    return
-  }
-
-  if (linkElement.protocol == 'http:' && location.protocol == 'https:') {
-    return
-  }
-
-  if (!allowQueryString && linkElement.search && !('instant' in linkElement.dataset)) {
-    return
-  }
-
-  if (linkElement.hash && linkElement.pathname + linkElement.search == location.pathname + location.search) {
-    return
-  }
-
-  if ('noInstant' in linkElement.dataset) {
-    return
-  }
-
-  return true
-}
-
-function preload(url) {
-  if (prefetches.has(url)) {
-    return
-  }
-
-  const prefetcher = document.createElement('link')
-  prefetcher.rel = 'prefetch'
-  prefetcher.href = url
-  document.head.appendChild(prefetcher)
-
-  prefetches.add(url)
-}
diff --git a/static/js/instantpage.min.js b/static/js/instantpage.min.js
new file mode 100644
index 0000000..4a08db3
--- /dev/null
+++ b/static/js/instantpage.min.js
@@ -0,0 +1,2 @@
+/*! instant.page v5.1.0 - (C) 2019-2020 Alexandre Dieulot - https://instant.page/license */
+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)}
\ No newline at end of file