First version of YoutubeVideo component
This commit is contained in:
prototypa
271
src/components/common/YoutubeVideo.astro
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271
src/components/common/YoutubeVideo.astro
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@@ -0,0 +1,271 @@
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---
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const {
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videoId,
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title = ""
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} = Astro.props;
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---
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<lite-youtube videoid={videoId} playlabel={title}></lite-youtube>
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<style is:global>
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lite-youtube {
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background-color: #000;
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position: relative;
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display: block;
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contain: content;
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background-position: center center;
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background-size: cover;
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cursor: pointer;
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/* max-width: 720px; */
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}
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/* gradient */
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lite-youtube::before {
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content: '';
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display: block;
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position: absolute;
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top: 0;
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background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAADGCAYAAAAT+OqFAAAAdklEQVQoz42QQQ7AIAgEF/T/D+kbq/RWAlnQyyazA4aoAB4FsBSA/bFjuF1EOL7VbrIrBuusmrt4ZZORfb6ehbWdnRHEIiITaEUKa5EJqUakRSaEYBJSCY2dEstQY7AuxahwXFrvZmWl2rh4JZ07z9dLtesfNj5q0FU3A5ObbwAAAABJRU5ErkJggg==);
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background-position: top;
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background-repeat: repeat-x;
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height: 60px;
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padding-bottom: 50px;
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width: 100%;
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transition: all 0.2s cubic-bezier(0, 0, 0.2, 1);
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}
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/* responsive iframe with a 16:9 aspect ratio
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thanks https://css-tricks.com/responsive-iframes/
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*/
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lite-youtube::after {
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content: '';
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display: block;
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padding-bottom: calc(100% / (16 / 9));
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}
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lite-youtube > iframe {
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width: 100%;
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height: 100%;
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position: absolute;
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top: 0;
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left: 0;
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border: 0;
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}
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/* play button */
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lite-youtube > .lty-playbtn {
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display: block;
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width: 68px;
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height: 48px;
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position: absolute;
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cursor: pointer;
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transform: translate3d(-50%, -50%, 0);
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top: 50%;
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left: 50%;
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z-index: 1;
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background-color: transparent;
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/* YT's actual play button svg */
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background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 68 48"><path d="M66.52 7.74c-.78-2.93-2.49-5.41-5.42-6.19C55.79.13 34 0 34 0S12.21.13 6.9 1.55c-2.93.78-4.63 3.26-5.42 6.19C.06 13.05 0 24 0 24s.06 10.95 1.48 16.26c.78 2.93 2.49 5.41 5.42 6.19C12.21 47.87 34 48 34 48s21.79-.13 27.1-1.55c2.93-.78 4.64-3.26 5.42-6.19C67.94 34.95 68 24 68 24s-.06-10.95-1.48-16.26z" fill="red"/><path d="M45 24 27 14v20" fill="white"/></svg>');
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filter: grayscale(100%);
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transition: filter 0.1s cubic-bezier(0, 0, 0.2, 1);
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border: none;
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}
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lite-youtube:hover > .lty-playbtn,
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lite-youtube .lty-playbtn:focus {
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filter: none;
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}
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/* Post-click styles */
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lite-youtube.lyt-activated {
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cursor: unset;
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}
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lite-youtube.lyt-activated::before,
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lite-youtube.lyt-activated > .lty-playbtn {
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opacity: 0;
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pointer-events: none;
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}
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.lyt-visually-hidden {
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clip: rect(0 0 0 0);
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clip-path: inset(50%);
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height: 1px;
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overflow: hidden;
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position: absolute;
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white-space: nowrap;
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width: 1px;
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}
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</style>
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<script>
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/* eslint-disable */
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// @ts-nocheck
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/**
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* A lightweight youtube embed. Still should feel the same to the user, just MUCH faster to initialize and paint.
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*
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* Thx to these as the inspiration
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* https://storage.googleapis.com/amp-vs-non-amp/youtube-lazy.html
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* https://autoplay-youtube-player.glitch.me/
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*
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* Once built it, I also found these:
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* https://github.com/ampproject/amphtml/blob/master/extensions/amp-youtube (👍👍)
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* https://github.com/Daugilas/lazyYT
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* https://github.com/vb/lazyframe
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*/
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class LiteYTEmbed extends HTMLElement {
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connectedCallback() {
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this.videoId = this.getAttribute('videoid');
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let playBtnEl = this.querySelector('.lty-playbtn');
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// A label for the button takes priority over a [playlabel] attribute on the custom-element
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this.playLabel = (playBtnEl && playBtnEl.textContent.trim()) || this.getAttribute('playlabel') || 'Play';
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/**
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* Lo, the youtube placeholder image! (aka the thumbnail, poster image, etc)
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*
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* See https://github.com/paulirish/lite-youtube-embed/blob/master/youtube-thumbnail-urls.md
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*
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* TODO: Do the sddefault->hqdefault fallback
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* - When doing this, apply referrerpolicy (https://github.com/ampproject/amphtml/pull/3940)
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* TODO: Consider using webp if supported, falling back to jpg
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*/
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if (!this.style.backgroundImage) {
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this.style.backgroundImage = `url("https://i.ytimg.com/vi/${this.videoId}/hqdefault.jpg")`;
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}
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// Set up play button, and its visually hidden label
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if (!playBtnEl) {
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playBtnEl = document.createElement('button');
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playBtnEl.type = 'button';
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playBtnEl.classList.add('lty-playbtn');
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this.append(playBtnEl);
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}
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if (!playBtnEl.textContent) {
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const playBtnLabelEl = document.createElement('span');
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playBtnLabelEl.className = 'lyt-visually-hidden';
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playBtnLabelEl.textContent = this.playLabel;
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playBtnEl.append(playBtnLabelEl);
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}
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playBtnEl.removeAttribute('href');
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// On hover (or tap), warm up the TCP connections we're (likely) about to use.
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this.addEventListener('pointerover', LiteYTEmbed.warmConnections, { once: true });
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// Once the user clicks, add the real iframe and drop our play button
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// TODO: In the future we could be like amp-youtube and silently swap in the iframe during idle time
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// We'd want to only do this for in-viewport or near-viewport ones: https://github.com/ampproject/amphtml/pull/5003
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this.addEventListener('click', this.addIframe);
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// Chrome & Edge desktop have no problem with the basic YouTube Embed with ?autoplay=1
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// However Safari desktop and most/all mobile browsers do not successfully track the user gesture of clicking through the creation/loading of the iframe,
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// so they don't autoplay automatically. Instead we must load an additional 2 sequential JS files (1KB + 165KB) (un-br) for the YT Player API
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// TODO: Try loading the the YT API in parallel with our iframe and then attaching/playing it. #82
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this.needsYTApiForAutoplay = navigator.vendor.includes('Apple') || navigator.userAgent.includes('Mobi');
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}
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/**
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* Add a <link rel={preload | preconnect} ...> to the head
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*/
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static addPrefetch(kind, url, as) {
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const linkEl = document.createElement('link');
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linkEl.rel = kind;
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linkEl.href = url;
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if (as) {
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linkEl.as = as;
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}
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document.head.append(linkEl);
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}
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/**
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* Begin pre-connecting to warm up the iframe load
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* Since the embed's network requests load within its iframe,
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* preload/prefetch'ing them outside the iframe will only cause double-downloads.
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* So, the best we can do is warm up a few connections to origins that are in the critical path.
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*
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* Maybe `<link rel=preload as=document>` would work, but it's unsupported: http://crbug.com/593267
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* But TBH, I don't think it'll happen soon with Site Isolation and split caches adding serious complexity.
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*/
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static warmConnections() {
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if (LiteYTEmbed.preconnected) return;
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// The iframe document and most of its subresources come right off youtube.com
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LiteYTEmbed.addPrefetch('preconnect', 'https://www.youtube-nocookie.com');
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// The botguard script is fetched off from google.com
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LiteYTEmbed.addPrefetch('preconnect', 'https://www.google.com');
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// Not certain if these ad related domains are in the critical path. Could verify with domain-specific throttling.
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LiteYTEmbed.addPrefetch('preconnect', 'https://googleads.g.doubleclick.net');
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LiteYTEmbed.addPrefetch('preconnect', 'https://static.doubleclick.net');
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LiteYTEmbed.preconnected = true;
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}
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fetchYTPlayerApi() {
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if (window.YT || (window.YT && window.YT.Player)) return;
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this.ytApiPromise = new Promise((res, rej) => {
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var el = document.createElement('script');
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el.src = 'https://www.youtube.com/iframe_api';
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el.async = true;
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el.onload = (_) => {
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YT.ready(res);
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};
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el.onerror = rej;
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this.append(el);
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});
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}
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async addYTPlayerIframe(params) {
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this.fetchYTPlayerApi();
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await this.ytApiPromise;
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const videoPlaceholderEl = document.createElement('div');
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this.append(videoPlaceholderEl);
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const paramsObj = Object.fromEntries(params.entries());
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new YT.Player(videoPlaceholderEl, {
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width: '100%',
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videoId: this.videoId,
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playerVars: paramsObj,
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events: {
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onReady: (event) => {
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event.target.playVideo();
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},
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},
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});
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}
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async addIframe() {
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if (this.classList.contains('lyt-activated')) return;
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this.classList.add('lyt-activated');
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const params = new URLSearchParams(this.getAttribute('params') || []);
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params.append('autoplay', '1');
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params.append('playsinline', '1');
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if (this.needsYTApiForAutoplay) {
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return this.addYTPlayerIframe(params);
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}
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const iframeEl = document.createElement('iframe');
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iframeEl.width = 560;
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iframeEl.height = 315;
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// No encoding necessary as [title] is safe. https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html#:~:text=Safe%20HTML%20Attributes%20include
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iframeEl.title = this.playLabel;
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iframeEl.allow = 'accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture';
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iframeEl.allowFullscreen = true;
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// AFAIK, the encoding here isn't necessary for XSS, but we'll do it only because this is a URL
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// https://stackoverflow.com/q/64959723/89484
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iframeEl.src = `https://www.youtube-nocookie.com/embed/${encodeURIComponent(this.videoId)}?${params.toString()}`;
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this.append(iframeEl);
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// Set focus for a11y
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iframeEl.focus();
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}
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}
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// Register custom element
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customElements.define('lite-youtube', LiteYTEmbed);
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</script>
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@@ -11,6 +11,8 @@ import Features3 from '~/components/widgets/Features3.astro';
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import FAQs from '~/components/widgets/FAQs.astro';
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import Brands from '~/components/widgets/Brands.astro';
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import YoutubeVideo from '~/components/common/YoutubeVideo.astro';
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const metadata = {
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title: 'Startup Landing Page',
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};
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@@ -39,23 +41,12 @@ const metadata = {
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</Fragment>
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<Fragment slot="subtitle">
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Step into the spotlight with <span class="font-semibold">Astrowind</span> templates, your pathway to fortifying
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your startup's digital footprint, fostering credibility, and expanding your reach.
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Step into the spotlight with <span class="font-semibold">Astrowind</span> templates, your pathway to fortifying your
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startup's digital footprint, fostering credibility, and expanding your reach.
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</Fragment>
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<Fragment slot="image">
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<div class="relative h-0 pb-[56.25%]">
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<iframe
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width="560"
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height="315"
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src="https://www.youtube.com/embed/dsTXcSeAZq8"
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title="YouTube video player"
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allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture;"
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allowfullscreen
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class="absolute top-0 left-0 w-full h-full"
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>
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</iframe>
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</div>
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<YoutubeVideo videoId="gxBkghlglTg" title="Astro just Launched.... Could it be the ultimate web framework?" />
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</Fragment>
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</Hero>
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@@ -300,13 +291,15 @@ const metadata = {
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<!-- CallToAction Widget *********** -->
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<CallToAction
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actions={[{
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variant: "primary",
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actions={[
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{
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variant: 'primary',
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target: '_blank',
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text: 'Get templates',
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href: 'https://github.com/onwidget/astrowind',
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icon: 'tabler:download',
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}]}
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},
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]}
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>
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<Fragment slot="title">Be a part of our vision</Fragment>
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