preact-missing-hooks
Version:
A lightweight, extendable collection of missing React-like hooks for Preact — plus fresh, powerful new ones designed specifically for modern Preact apps.
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HTML
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Preact Missing Hooks — Demo</title>
<script type="importmap">
{
"imports": {
"preact": "https://esm.sh/preact@10",
"preact/hooks": "https://esm.sh/preact@10/hooks",
"preact/compat": "https://esm.sh/preact@10/compat"
}
}
</script>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap"
rel="stylesheet"
/>
<style>
:root {
--bg: #0f0f12;
--surface: #18181c;
--surface2: #222228;
--border: #2e2e36;
--text: #e4e4e7;
--text2: #d4d4d8;
--textMuted: #a1a1aa;
--accent: #7c3aed;
--accentDim: rgba(124, 58, 237, 0.15);
--green: #22c55e;
--greenDim: rgba(34, 197, 94, 0.12);
--amber: #f59e0b;
--red: #ef4444;
--radius: 10px;
--radiusSm: 6px;
}
* {
box-sizing: border-box;
}
html {
overflow-x: hidden;
}
body {
margin: 0;
font-family: "DM Sans", system-ui, sans-serif;
background: var(--bg);
color: var(--text);
line-height: 1.5;
min-height: 100vh;
}
.page-header {
padding: 2.5rem 1.5rem;
text-align: center;
border-bottom: 1px solid var(--border);
background: linear-gradient(
180deg,
rgba(124, 58, 237, 0.04) 0%,
transparent 100%
);
}
.page-header h1 {
margin: 0;
font-size: 1.85rem;
font-weight: 700;
letter-spacing: -0.03em;
color: var(--text2);
}
.page-header .subtitle {
margin: 0.5rem 0 0;
color: var(--textMuted);
font-size: 0.95rem;
font-weight: 400;
}
.page-header p {
margin: 0.5rem 0 0;
color: var(--textMuted);
font-size: 0.95rem;
}
.container {
max-width: min(1320px, 96vw);
margin: 0 auto;
padding: 1.75rem 1.5rem;
}
.hook-section {
margin-bottom: 3.5rem;
padding-bottom: 2.5rem;
border-bottom: 1px solid var(--border);
}
.hook-section:last-child {
border-bottom: none;
}
.hook-section h2 {
margin: 0 0 0.5rem;
font-size: 1.35rem;
font-weight: 600;
color: var(--text);
letter-spacing: -0.02em;
}
.flow {
display: inline-block;
max-width: 100%;
margin-bottom: 0.5rem;
padding: 0.35rem 0.7rem;
font-size: 0.75rem;
font-family: "JetBrains Mono", monospace;
color: var(--accent);
background: var(--accentDim);
border-radius: var(--radiusSm);
white-space: pre-wrap;
word-break: break-word;
overflow-wrap: break-word;
}
.summary {
margin: 0 0 1rem;
font-size: 0.9rem;
color: var(--textMuted);
max-width: 72ch;
line-height: 1.55;
}
.cards {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1.25rem;
}
@media (max-width: 800px) {
.cards {
grid-template-columns: 1fr;
}
}
.card {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
.card-title {
padding: 0.5rem 0.75rem;
font-size: 0.75rem;
font-weight: 600;
text-transform: uppercase;
letter-spacing: 0.05em;
color: var(--textMuted);
border-bottom: 1px solid var(--border);
}
.card-code {
padding: 0.75rem 1rem;
font-family: "JetBrains Mono", monospace;
font-size: 0.8rem;
line-height: 1.5;
color: var(--textMuted);
background: #0d0d0f;
white-space: pre-wrap;
word-break: break-word;
overflow-wrap: break-word;
overflow-x: hidden;
min-width: 0;
}
.card-live {
padding: 1rem;
min-height: 80px;
min-width: 0;
overflow-wrap: break-word;
word-break: break-word;
}
.card-live .status {
font-size: 0.85rem;
}
.card-live button {
padding: 0.4rem 0.75rem;
margin: 0.2rem 0.2rem 0 0;
font-family: inherit;
font-size: 0.85rem;
background: var(--surface2);
border: 1px solid var(--border);
border-radius: var(--radiusSm);
color: var(--text);
cursor: pointer;
}
.card-live button:hover {
background: var(--border);
}
.card-live button:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.badge {
display: inline-block;
padding: 0.2rem 0.5rem;
border-radius: 4px;
font-size: 0.8rem;
}
.badge.green {
background: var(--greenDim);
color: var(--green);
}
.badge.amber {
color: var(--amber);
}
/* IndexedDB demo: reactive table + action buttons */
.idb-actions {
display: flex;
flex-wrap: wrap;
gap: 0.35rem;
margin-bottom: 0.75rem;
}
.idb-table-viz {
background: var(--surface2);
border-radius: var(--radiusSm);
padding: 0.5rem;
font-size: 0.8rem;
max-height: 180px;
overflow-y: auto;
}
.idb-row {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0.35rem 0.5rem;
border-radius: 4px;
margin-bottom: 2px;
}
.idb-row:nth-child(odd) {
background: rgba(255, 255, 255, 0.03);
}
.idb-row-actions {
display: flex;
gap: 0.25rem;
}
.idb-count {
margin-bottom: 0.5rem;
font-weight: 600;
color: var(--textMuted);
}
/* useWasmCompute flow diagram */
.wasm-flow {
display: flex;
align-items: center;
justify-content: center;
flex-wrap: wrap;
gap: 0.25rem;
padding: 0.75rem;
margin-bottom: 0.75rem;
background: var(--surface2);
border-radius: var(--radiusSm);
}
.wasm-flow-node {
padding: 0.3rem 0.5rem;
font-size: 0.7rem;
font-family: "JetBrains Mono", monospace;
border-radius: 4px;
border: 1px solid var(--border);
color: var(--textMuted);
transition:
background 0.2s,
border-color 0.2s;
}
.wasm-flow-node.active {
border-color: var(--accent);
background: var(--accentDim);
color: var(--accent);
}
.wasm-flow-arrow {
color: var(--textMuted);
font-size: 0.75rem;
}
/* Worker notifications toasts */
.worker-toast-container {
position: fixed;
bottom: 1rem;
right: 1rem;
z-index: 9999;
display: flex;
flex-direction: column;
gap: 0.5rem;
max-width: 320px;
pointer-events: none;
}
.worker-toast {
padding: 0.5rem 0.75rem;
border-radius: var(--radiusSm);
font-size: 0.85rem;
font-weight: 500;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
border: 1px solid;
animation: worker-toast-in 0.25s ease-out;
}
.worker-toast.running {
background: rgba(59, 130, 246, 0.2);
border-color: #3b82f6;
color: #93c5fd;
}
.worker-toast.queued {
background: rgba(245, 158, 11, 0.2);
border-color: var(--amber);
color: #fcd34d;
}
.worker-toast.completed {
background: var(--greenDim);
border-color: var(--green);
color: #86efac;
}
.worker-toast.failed {
background: rgba(239, 68, 68, 0.2);
border-color: var(--red);
color: #fca5a5;
}
.worker-toast.queue-update {
background: var(--surface2);
border-color: var(--border);
color: var(--textMuted);
}
@keyframes worker-toast-in {
from {
opacity: 0;
transform: translateX(100%);
}
to {
opacity: 1;
transform: translateX(0);
}
}
/* useRBAC demo */
.rbac-demo {
display: flex;
flex-direction: column;
gap: 0.75rem;
}
.rbac-toolbar {
display: flex;
align-items: center;
flex-wrap: wrap;
gap: 0.25rem;
}
.rbac-toolbar button {
padding: 0.25rem 0.5rem;
font-size: 0.8rem;
cursor: pointer;
background: var(--surface2);
border: 1px solid var(--border);
border-radius: var(--radiusSm);
color: var(--text);
}
.rbac-toolbar button:hover {
background: var(--border);
}
.rbac-actions {
display: flex;
flex-wrap: wrap;
gap: 0.35rem;
}
.rbac-state {
background: var(--surface2);
border-radius: var(--radiusSm);
padding: 0.6rem 0.75rem;
font-size: 0.85rem;
}
.rbac-state-row {
margin-bottom: 0.35rem;
}
.rbac-state-row:last-child {
margin-bottom: 0;
}
.rbac-state-row code {
margin-left: 0.25rem;
}
.rbac-conditional {
display: flex;
flex-wrap: wrap;
align-items: center;
gap: 0.25rem;
}
</style>
</head>
<body>
<header class="page-header">
<h1>Preact Missing Hooks</h1>
<p class="subtitle">React-like hooks for Preact — demo & usage</p>
</header>
<main class="container" id="root"></main>
<script type="module" src="./main.js"></script>
</body>
</html>