docs(vue): add interactive demo for every composable

A beautiful, SSR-safe demo.vue next to each composable, auto-discovered by the docs extractor and rendered client-only on each composable's page.
This commit is contained in:
2026-06-08 15:51:16 +07:00
parent 59e995d0b5
commit e83f10fe32
214 changed files with 19584 additions and 74 deletions
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<script setup lang="ts">
import { computed } from 'vue';
import { useLocalStorage } from './index';
// Persists across reloads and syncs across tabs via the `storage` event.
const username = useLocalStorage('demo:username', 'ada-lovelace');
const fontSize = useLocalStorage('demo:font-size', 16);
const darkMode = useLocalStorage('demo:dark-mode', false);
// Object value — serialized as JSON automatically.
const profile = useLocalStorage('demo:profile', {
role: 'Engineer',
team: 'Platform',
});
const persistedJson = computed(() =>
JSON.stringify(
{ username: username.value, fontSize: fontSize.value, darkMode: darkMode.value, profile: profile.value },
null,
2,
),
);
function reset() {
// Assigning null removes the key; the ref falls back to its default on next read.
username.value = null as never;
fontSize.value = 16;
darkMode.value = false;
profile.value = { role: 'Engineer', team: 'Platform' };
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Persisted settings</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">
localStorage
</span>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-4">
<label class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Username</span>
<input
v-model="username"
type="text"
placeholder="your handle"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
</label>
<label class="flex flex-col gap-1.5">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Font size</span>
<span class="font-mono text-sm tabular-nums text-(--fg-muted)">{{ fontSize }}px</span>
</div>
<input
v-model.number="fontSize"
type="range"
min="12"
max="28"
step="1"
class="w-full accent-(--accent)"
>
</label>
<button
type="button"
:aria-pressed="darkMode"
class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2 text-sm font-medium text-(--fg) transition hover:border-(--border-strong) cursor-pointer"
@click="darkMode = !darkMode"
>
<span>Dark mode</span>
<span
class="relative h-5 w-9 rounded-full transition"
:class="darkMode ? 'bg-(--accent)' : 'bg-(--border-strong)'"
>
<span
class="absolute top-0.5 h-4 w-4 rounded-full bg-white transition-all"
:class="darkMode ? 'left-4' : 'left-0.5'"
/>
</span>
</button>
</div>
<pre
class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-xs leading-relaxed text-(--fg) overflow-auto"
:style="{ fontSize: `${fontSize}px` }"
>{{ persistedJson }}</pre>
<p class="text-xs text-(--fg-subtle)">
Edit anything, then reload the page or open a second tab values stay in sync.
</p>
<button
type="button"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="reset"
>
Reset to defaults
</button>
</div>
</template>
@@ -0,0 +1,121 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useSessionStorage } from './index';
// sessionStorage survives reloads but is cleared when the tab closes —
// perfect for a multi-step draft that should not leak between sessions.
const step = useSessionStorage('demo:wizard-step', 1);
const draft = useSessionStorage('demo:wizard-draft', {
name: '',
email: '',
newsletter: true,
});
const totalSteps = 3;
const progress = computed(() => Math.round((step.value / totalSteps) * 100));
function next() {
if (step.value < totalSteps)
step.value++;
}
function prev() {
if (step.value > 1)
step.value--;
}
function clearDraft() {
step.value = 1;
draft.value = { name: '', email: '', newsletter: true };
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Step {{ step }} of {{ totalSteps }}
</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">
sessionStorage
</span>
</div>
<div class="h-1.5 w-full overflow-hidden rounded-full bg-(--bg-inset)">
<div
class="h-full rounded-full bg-(--accent) transition-all duration-300"
:style="{ width: `${progress}%` }"
/>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-4">
<template v-if="step === 1">
<label class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Full name</span>
<input
v-model="draft.name"
type="text"
placeholder="Grace Hopper"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
</label>
</template>
<template v-else-if="step === 2">
<label class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Email</span>
<input
v-model="draft.email"
type="email"
placeholder="grace@navy.mil"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
</label>
</template>
<template v-else>
<label class="flex items-center justify-between gap-3 cursor-pointer">
<span class="text-sm text-(--fg)">Subscribe to the newsletter</span>
<input v-model="draft.newsletter" type="checkbox" class="h-4 w-4 accent-(--accent)">
</label>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-sm text-(--fg-muted)">
<p><span class="text-(--fg-subtle)">Name:</span> {{ draft.name || '—' }}</p>
<p><span class="text-(--fg-subtle)">Email:</span> {{ draft.email || '—' }}</p>
</div>
</template>
</div>
<div class="flex items-center gap-2">
<button
type="button"
:disabled="step === 1"
class="inline-flex flex-1 items-center justify-center gap-1.5 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="prev"
>
Back
</button>
<button
type="button"
:disabled="step === totalSteps"
class="inline-flex flex-1 items-center justify-center gap-1.5 rounded-lg border border-transparent bg-(--accent) px-3 py-1.5 text-sm font-medium text-(--accent-fg) transition hover:bg-(--accent-hover) active:scale-[0.98] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="next"
>
Continue
</button>
</div>
<p class="text-xs text-(--fg-subtle)">
Reload the page your step and draft are restored. Closing the tab clears them.
</p>
<button
type="button"
class="self-start text-xs font-medium text-(--fg-muted) underline-offset-2 hover:underline cursor-pointer"
@click="clearDraft"
>
Discard draft
</button>
</div>
</template>
@@ -0,0 +1,130 @@
<script setup lang="ts">
import { computed, reactive } from 'vue';
import { useStorage } from './index';
import type { StorageLike } from './index';
// useStorage is backend-agnostic: pass any object implementing StorageLike.
// Here we use a transparent in-memory backend so the demo is fully SSR-safe
// and we can show exactly what gets written to the store.
const raw = reactive<Record<string, string>>({});
const memoryStorage: StorageLike = {
getItem: (key) => (key in raw ? raw[key] : null),
setItem: (key, value) => { raw[key] = value; },
removeItem: (key) => { delete raw[key]; },
};
// A Set value — useStorage guesses the Set serializer automatically.
const tags = useStorage('demo:tags', new Set(['vue', 'reactive']), memoryStorage);
// A custom serializer: store a number as a zero-padded string.
const ticket = useStorage('demo:ticket', 1, memoryStorage, {
serializer: {
read: (v) => Number.parseInt(v, 10),
write: (v) => String(v).padStart(5, '0'),
},
});
const newTag = reactive({ value: '' });
const tagList = computed(() => [...tags.value]);
const storeEntries = computed(() => Object.entries(raw));
function addTag() {
const t = newTag.value.trim().toLowerCase();
if (!t)
return;
// Reassign so the shallowRef watcher fires and writes to storage.
tags.value = new Set([...tags.value, t]);
newTag.value = '';
}
function removeTag(tag: string) {
const next = new Set(tags.value);
next.delete(tag);
tags.value = next;
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Custom storage backend</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">
in-memory
</span>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Tags (Set)</span>
<div class="flex flex-wrap gap-1.5 min-h-7">
<span
v-for="tag in tagList"
:key="tag"
class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)"
>
{{ tag }}
<button
type="button"
class="text-(--fg-subtle) transition hover:text-(--fg) cursor-pointer"
:aria-label="`Remove ${tag}`"
@click="removeTag(tag)"
>
&times;
</button>
</span>
<span v-if="tagList.length === 0" class="text-xs text-(--fg-subtle)">No tags yet</span>
</div>
<form class="flex items-center gap-2" @submit.prevent="addTag">
<input
v-model="newTag.value"
type="text"
placeholder="add a tag…"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
<button
type="submit"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border border-transparent bg-(--accent) px-3 py-1.5 text-sm font-medium text-(--accent-fg) transition hover:bg-(--accent-hover) active:scale-[0.98] cursor-pointer"
>
Add
</button>
</form>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex items-center justify-between">
<div class="flex flex-col gap-0.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Ticket #</span>
<span class="text-xs text-(--fg-subtle)">zero-padded serializer</span>
</div>
<div class="flex items-center gap-3">
<button
type="button"
class="inline-flex h-8 w-8 items-center justify-center rounded-lg border border-(--border) bg-(--bg-inset) text-(--fg) transition hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="ticket = Math.max(0, ticket - 1)"
>
&minus;
</button>
<span class="font-mono text-2xl font-bold tabular-nums text-(--fg)">{{ ticket }}</span>
<button
type="button"
class="inline-flex h-8 w-8 items-center justify-center rounded-lg border border-(--border) bg-(--bg-inset) text-(--fg) transition hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="ticket = ticket + 1"
>
+
</button>
</div>
</div>
<div class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Raw store contents</span>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-xs text-(--fg) flex flex-col gap-1">
<div v-for="[key, value] in storeEntries" :key="key" class="flex gap-2">
<span class="text-(--fg-subtle) shrink-0">{{ key }}</span>
<span class="truncate">{{ value }}</span>
</div>
</div>
</div>
</div>
</template>
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<script setup lang="ts">
import { reactive, ref } from 'vue';
import { useStorageAsync } from './index';
import type { StorageLikeAsync } from './index';
// useStorageAsync works with any async backend (IndexedDB, a REST cache, etc.).
// We simulate latency with a tiny in-memory store so the demo is SSR-safe and
// you can watch the `isReady` flag flip once the initial read resolves.
const store = reactive<Record<string, string>>({});
const LATENCY = 600;
function delay<T>(value: T): Promise<T> {
return new Promise((resolve) => { setTimeout(() => resolve(value), LATENCY); });
}
const asyncStorage: StorageLikeAsync = {
getItem: (key) => delay(key in store ? store[key] : null),
setItem: async (key, value) => { await delay(null); store[key] = value; },
removeItem: async (key) => { await delay(null); delete store[key]; },
};
const saving = ref(false);
// Returns { state, isReady } and is itself awaitable. `isReady` flips to true
// once the initial async read resolves — the composable sets it for us.
const { state: prefs, isReady } = useStorageAsync(
'demo:async-prefs',
{ theme: 'system', density: 'comfortable' },
asyncStorage,
);
const themes = ['light', 'dark', 'system'] as const;
const densities = ['compact', 'comfortable'] as const;
async function update<K extends keyof typeof prefs.value>(key: K, value: (typeof prefs.value)[K]) {
prefs.value = { ...prefs.value, [key]: value };
// The watcher writes asynchronously; show a brief saving indicator.
saving.value = true;
await delay(null);
saving.value = false;
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Async preferences</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition"
:class="isReady
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
<span
class="h-1.5 w-1.5 rounded-full"
:class="isReady ? 'bg-emerald-500' : 'bg-(--fg-subtle) animate-pulse'"
/>
{{ isReady ? 'ready' : 'loading…' }}
</span>
</div>
<div
v-if="!isReady"
class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-3"
>
<div class="h-3 w-1/3 animate-pulse rounded bg-(--bg-inset)" />
<div class="h-9 w-full animate-pulse rounded-lg bg-(--bg-inset)" />
<div class="h-3 w-1/3 animate-pulse rounded bg-(--bg-inset)" />
<div class="h-9 w-full animate-pulse rounded-lg bg-(--bg-inset)" />
</div>
<div v-else class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-4">
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Theme</span>
<div class="grid grid-cols-3 gap-1.5">
<button
v-for="t in themes"
:key="t"
type="button"
class="rounded-lg border px-2 py-1.5 text-sm font-medium capitalize transition active:scale-[0.98] cursor-pointer"
:class="prefs.theme === t
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-inset) text-(--fg) hover:border-(--border-strong)'"
@click="update('theme', t)"
>
{{ t }}
</button>
</div>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Density</span>
<div class="grid grid-cols-2 gap-1.5">
<button
v-for="d in densities"
:key="d"
type="button"
class="rounded-lg border px-2 py-1.5 text-sm font-medium capitalize transition active:scale-[0.98] cursor-pointer"
:class="prefs.density === d
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-inset) text-(--fg) hover:border-(--border-strong)'"
@click="update('density', d)"
>
{{ d }}
</button>
</div>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) flex items-center justify-between">
<span class="truncate">{{ JSON.stringify(prefs) }}</span>
<span
class="ml-2 shrink-0 text-xs transition"
:class="saving ? 'text-sky-600 dark:text-sky-400' : 'text-(--fg-subtle)'"
>
{{ saving ? 'saving…' : 'saved' }}
</span>
</div>
<p class="text-xs text-(--fg-subtle)">
Every change is written through the async backend with simulated latency.
</p>
</div>
</template>