lower browser req, use alpine, animate counter

.eleventy.js

@@ -4,6 +4,11 @@ module.exports = function (eleventyConfig) {
 	eleventyConfig.addPlugin(eleventySass)
 
 	eleventyConfig.setServerPassthroughCopyBehavior("passthrough")
+
+	eleventyConfig.addPassthroughCopy({
+		"node_modules/alpinejs/dist/cdn.min.js": "js/alpine.js"
+	})
+
 	eleventyConfig.addPassthroughCopy("src/js/**/*.js")
 	eleventyConfig.addPassthroughCopy({ "static": "/" })
 

package-lock.json

@@ -10,7 +10,8 @@
       "license": "ISC",
       "dependencies": {
         "@11ty/eleventy": "^2.0.0",
-        "@11tyrocks/eleventy-plugin-sass-lightningcss": "^1.0.0"
+        "@11tyrocks/eleventy-plugin-sass-lightningcss": "^1.0.0",
+        "alpinejs": "^3.11.1"
       },
       "devDependencies": {
         "stylelint": "^15.2.0",
@@ -425,6 +426,19 @@
       "integrity": "sha512-Gj7cI7z+98M282Tqmp2K5EIsoouUEzbBJhQQzDE3jSIRk6r9gsz0oUokqIUR4u1R3dMHo0pDHM7sNOHyhulypw==",
       "dev": true
     },
+    "node_modules/@vue/reactivity": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/@vue/reactivity/-/reactivity-3.1.5.tgz",
+      "integrity": "sha512-1tdfLmNjWG6t/CsPldh+foumYFo3cpyCHgBYQ34ylaMsJ+SNHQ1kApMIa8jN+i593zQuaw3AdWH0nJTARzCFhg==",
+      "dependencies": {
+        "@vue/shared": "3.1.5"
+      }
+    },
+    "node_modules/@vue/shared": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/@vue/shared/-/shared-3.1.5.tgz",
+      "integrity": "sha512-oJ4F3TnvpXaQwZJNF3ZK+kLPHKarDmJjJ6jyzVNDKH9md1dptjC7lWR//jrGuLdek/U6iltWxqAnYOu8gCiOvA=="
+    },
     "node_modules/a-sync-waterfall": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/a-sync-waterfall/-/a-sync-waterfall-1.0.1.tgz",
@@ -457,6 +471,14 @@
         "url": "https://github.com/sponsors/epoberezkin"
       }
     },
+    "node_modules/alpinejs": {
+      "version": "3.11.1",
+      "resolved": "https://registry.npmjs.org/alpinejs/-/alpinejs-3.11.1.tgz",
+      "integrity": "sha512-0Y+4WKQcEZrvpfS98qeSOXCPXFPorULQ+1hc8lQrx+1HHzkUofD4HzjTfz+wimA5tSsGnpXz/SoF2P9saiXZCw==",
+      "dependencies": {
+        "@vue/reactivity": "~3.1.1"
+      }
+    },
     "node_modules/ansi-regex": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",

package.json

@@ -13,7 +13,8 @@
   "license": "ISC",
   "dependencies": {
     "@11ty/eleventy": "^2.0.0",
-    "@11tyrocks/eleventy-plugin-sass-lightningcss": "^1.0.0"
+    "@11tyrocks/eleventy-plugin-sass-lightningcss": "^1.0.0",
+    "alpinejs": "^3.11.1"
   },
   "devDependencies": {
     "stylelint": "^15.2.0",

src/_includes/base.njk

@@ -6,10 +6,13 @@
 	<title>{{ title }}</title>
 	<link rel="stylesheet" href="{{ '/css/style.css' | url }}" />
 	<link rel="preload" href="{{ '/css/style.css' | url }}" as="style" />
-	<style>[v-cloak] { display: none; }</style>
-	<script type="module" src="{{ '/js/script.js' | url }}"></script>
+	<style>[x-cloak] { display: none !important; }</style>
+	<script src="{{ '/js/alpine.js' | url }}" defer></script>
+	<link rel="preload" href="{{ '/js/alpine.js' | url }}" as="script" />
+	<script src="{{ '/js/script.js' | url }}"></script>
 	<link rel="preload" href="{{ '/js/script.js' | url }}" as="script" />
 
+
 	{% include 'preload-assets.njk' %}
 	{% include 'favicons.njk' %}
 	<!-- TODO: REMOVE IN PROD, but safer to have it for now -->

src/index.html

@@ -2,14 +2,14 @@
 layout: base.njk
 title: Compteur de grève
 ---
-<section class="banner" v-scope="App({ initialCount: 148563 })" @vue:mounted="mounted" @vue:unmounted="unmounted">
+<section class="banner" x-data="counter" data-initial-count="148563">
 	<div class="grid grid-2 gap">
 		<article class="text-center">
 			<h1 class="visually-hidden">Compteur de Grève</h1>
 			<p>
 				<span class="color-3">Contre la réforme des retraites,</span><br>
 				à l’appel de l’ensemble des organisations syndicales, le 7 mars
-				<strong class="block counter text-big text-bold" v-text="formattedCount">148&nbsp;563</strong>
+				<strong class="block counter text-big text-bold" x-bind="counter">148&nbsp;563</strong>
 				<span class="separator">personnes seront</span>
 				<em class="block text-big text-bold">en grève<span class="visually-hidden"> !</span></em>
 			</p>
@@ -19,14 +19,14 @@ title: Compteur de grève
 			<h2>Et vous&nbsp;?</h2>
 			<div class="flex flex-col">
 				<div>
-					<form action="/" method="post" v-if="!participating" @submit="submit">
-						<button class="btn w100 mb15" v-bind:disabled="loading">Je fais grève</button>
+					<form action="/" method="post" x-bind="form">
+						<button class="btn w100 mb15" x-bind="button">Je fais grève</button>
 					</form>
-					<div class="success" v-cloak v-if="participating">
+					<div class="success" x-bind="thanks" x-cloak>
 						<strong class="block text-bold">Merci pour votre participation ! ✨</strong>
 						↓ Nous avons <strong>besoin de vous</strong> pour faire du <em class="text-bold">7 mars</em> une journée de mobilisation qui restera dans les mémoires
 					</div>
-					<div class="error" v-cloak v-if="error">Message d'erreur à faire</div>
+					<div class="error" x-bind="error" x-cloak>Message d'erreur à faire</div>
 				</div>
 				<a href="#" class="btn btn--secondary w100 mb15">Je partage le compteur</a>
 				<a href="#" class="btn btn--ghost w100 mb15">En savoir plus</a>

src/js/script.js

@@ -1,69 +1,105 @@
-import { createApp } from "https://unpkg.com/petite-vue@0.4.1/dist/petite-vue.es.js"
-
-
 let internalCount = 0
 
-createApp({
-	App
-}).mount(document.body)
-
-function App({ initialCount }) {
-	internalCount = initialCount
-
-	return {
-		count: initialCount,
-
-		get formattedCount() {
-			return this.count.toString().replace(/\B(?=(\d{3})+(?!\d))/g, " ")
-		},
+document.addEventListener('alpine:init', () => {
+	Alpine.data('counter', () => ({
+		count: null,
 
 		participating: false,
-		error: false,
+		get notParticipating() {
+			return !this.participating
+		},
+
+		errored: false,
 		loading: false,
 
-		async submit(event) {
+		init() {
+			this.count = parseInt(this.$el.dataset.initialCount)
+			internalCount = this.count
+
+			subscribeCount((newCount) => this.count = newCount)
+
+			this.$watch("count", (current, previous) => {
+				animateRange(150, previous, current, (value) => {
+					this.$refs.counter.textContent = formatNumber(value)
+				})
+			})
+		},
+
+		counter: {
+			["x-ref"]: "counter",
+		},
+
+		button: {
+			["x-bind:disabled"]: "loading"
+		},
+
+		thanks: {
+			["x-show"]: "participating",
+			["x-transition"]: null
+		},
+
+		error: {
+			["x-show"]: "errored",
+			["x-transition"]: null
+		},
+
+		form: {
+			["x-show"]: "notParticipating",
+			["x-transition"]: null,
+			["x-on:submit"](event) {
 				event.preventDefault()
 
-			try {
 				this.loading = true
-				this.error = false
+				this.errored = false
 
-				this.count = await incrementCount()
+				incrementCount().then(() => {
 					this.participating = true
-			} catch (error) {
-				this.error = true
+				}).catch((error) => {
+					this.errored = true
 					console.log(error)
-			} finally {
+
+				}).finally(() => {
 					this.loading = false
+				})
 			}
 		},
+	}))
+})
 
-		unsubscribeCount: null,
+function animateRange(duration, start, end, callback) {
+	let startTimestamp = null;
 
-		mounted() {
-			this.unsubscribeCount = subscribeCount((newCount) => this.count = newCount)
-		},
+	const step = (timestamp) => {
+		if (!startTimestamp) {
+			startTimestamp = timestamp
+		};
 
-		unmounted() {
-			if (this.unsubscribeCount) {
-				this.unsubscribeCount()
-				this.countSubcriber = null
-			}
-		},
+		const progress = Math.min((timestamp - startTimestamp) / duration, 1)
+		callback(Math.floor(progress * (end - start) + start))
+
+		if (progress < 1) {
+			requestAnimationFrame(step)
 		}
+	};
+
+	requestAnimationFrame(step);
+}
+
+function formatNumber(number) {
+	return number.toString().replace(/\B(?=(\d{3})+(?!\d))/g, " ")
 }
 
 function subscribeCount(onCount) {
 	let unsubscribed = false
 	let timeoutId = null
 
-	async function execute() {
-		const count = await fetchCount()
-
+	function execute() {
+		fetchCount().then(newCount => {
 			if (!unsubscribed) {
 				timeoutId = setTimeout(execute, 2000)
-			onCount(count)
+				onCount(newCount)
 			}
+		})
 	}
 
 	execute()
@@ -80,21 +116,23 @@ function subscribeCount(onCount) {
 
 
 // fake api
-async function fetchCount() {
-	await wait(1000)
+function fetchCount() {
+	return wait(1000).then(() => {
 		internalCount += randomInt(0, 9)
 		return internalCount
+	})
+
 }
 
-async function incrementCount() {
-	await wait(1000)
-
+function incrementCount() {
+	return wait(1000).then(() => {
 		if (!randomInt(0, 1)) {
 			throw new Error()
 		}
 
 		internalCount += 1 + randomInt(0, 9)
 		return internalCount
+	})
 }