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
@@ -0,0 +1,140 @@
<script setup lang="ts">
import { computed, useTemplateRef } from 'vue';
import { useAnimate } from './index';
const target = useTemplateRef<HTMLElement>('target');
const {
isSupported,
play,
pause,
reverse,
finish,
cancel,
playState,
currentTime,
playbackRate,
} = useAnimate(
target,
[
{ transform: 'translateX(-3.5rem) rotate(0deg)', borderRadius: '0.75rem' },
{ transform: 'translateX(0) rotate(180deg)', borderRadius: '50%' },
{ transform: 'translateX(3.5rem) rotate(360deg)', borderRadius: '0.75rem' },
],
{
duration: 2000,
iterations: Infinity,
direction: 'alternate',
easing: 'ease-in-out',
immediate: false,
},
);
const elapsed = computed(() => {
const t = currentTime.value;
return typeof t === 'number' ? `${(t / 1000).toFixed(2)}s` : '—';
});
const stateColor = computed(() => {
switch (playState.value) {
case 'running': return 'bg-emerald-500';
case 'paused': return 'bg-amber-500';
case 'finished': return 'bg-sky-500';
default: return 'bg-(--border-strong)';
}
});
const rates = [0.5, 1, 2] as const;
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-600 dark:text-amber-400"
>
The Web Animations API is not supported in this browser.
</div>
<template v-else>
<div class="flex h-28 items-center justify-center overflow-hidden rounded-xl border border-(--border) bg-(--bg-inset)">
<div
ref="target"
class="size-12 bg-(--accent) shadow-lg"
/>
</div>
<div class="grid grid-cols-2 gap-3">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
State
</div>
<div class="mt-1 flex items-center gap-2">
<span class="inline-block size-2 rounded-full transition" :class="stateColor" />
<span class="font-mono text-sm text-(--fg)">{{ playState }}</span>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Current time
</div>
<div class="mt-1 font-mono text-sm tabular-nums text-(--fg)">
{{ elapsed }}
</div>
</div>
</div>
<div class="grid grid-cols-3 gap-2">
<button
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"
@click="play"
>
Play
</button>
<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="pause"
>
Pause
</button>
<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="reverse"
>
Reverse
</button>
<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="finish"
>
Finish
</button>
<button
class="col-span-2 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="cancel"
>
Cancel
</button>
</div>
<div class="flex flex-col gap-2">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Playback rate
</div>
<div class="flex gap-2">
<button
v-for="rate in rates"
:key="rate"
class="flex-1 rounded-lg border px-3 py-1.5 text-sm font-medium tabular-nums transition active:scale-[0.98] cursor-pointer"
:class="playbackRate === rate
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="playbackRate = rate"
>
{{ rate }}×
</button>
</div>
</div>
</template>
</div>
</template>
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<script setup lang="ts">
import { computed, ref } from 'vue';
import { useCountdown } from './index';
const initial = ref(60);
const justFinished = ref(false);
const { remaining, isActive, start, stop, pause, resume } = useCountdown(initial, {
onComplete: () => {
justFinished.value = true;
},
onTick: () => {
justFinished.value = false;
},
});
const minutes = computed(() => String(Math.floor(remaining.value / 60)).padStart(2, '0'));
const seconds = computed(() => String(remaining.value % 60).padStart(2, '0'));
const progress = computed(() =>
initial.value > 0 ? Math.max(0, Math.min(1, remaining.value / initial.value)) : 0,
);
const presets = [30, 60, 300] as const;
function setPreset(value: number) {
initial.value = value;
start(value);
}
function toggle() {
if (isActive.value)
pause();
else
resume();
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-5 text-center">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Time remaining
</div>
<div
class="mt-2 font-mono text-5xl font-bold tabular-nums transition-colors"
:class="justFinished
? 'text-emerald-600 dark:text-emerald-400'
: remaining <= 10 && remaining > 0
? 'text-amber-600 dark:text-amber-400'
: 'text-(--fg)'"
>
{{ minutes }}:{{ seconds }}
</div>
<div class="mt-4 h-1.5 w-full overflow-hidden rounded-full bg-(--bg-inset)">
<div
class="h-full rounded-full bg-(--accent) transition-[width] duration-300 ease-linear"
:style="{ width: `${progress * 100}%` }"
/>
</div>
<div class="mt-3 flex items-center justify-center gap-2 text-xs text-(--fg-subtle)">
<span
class="inline-block size-2 rounded-full transition"
:class="isActive ? 'bg-emerald-500' : justFinished ? 'bg-sky-500' : 'bg-(--border-strong)'"
/>
{{ justFinished ? 'Completed' : isActive ? 'Counting down' : 'Paused' }}
</div>
</div>
<div class="grid grid-cols-3 gap-2">
<button
v-for="preset in presets"
:key="preset"
class="rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm font-medium tabular-nums text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="setPreset(preset)"
>
{{ preset < 60 ? `${preset}s` : `${preset / 60}m` }}
</button>
</div>
<div class="flex items-center gap-2">
<button
class="flex-1 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="remaining === 0 && isActive"
@click="toggle"
>
{{ isActive ? 'Pause' : 'Resume' }}
</button>
<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="start()"
>
Restart
</button>
<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="stop"
>
Stop
</button>
</div>
</div>
</template>
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<script setup lang="ts">
import { computed, ref } from 'vue';
import { useDateFormat } from './index';
// A fixed, real-looking moment so the demo is deterministic across renders.
const date = ref('2026-06-08T14:37:09');
const format = ref('dddd, MMMM Do YYYY — hh:mm:ss a');
const locale = ref('en-US');
const formatted = useDateFormat(date, format, { locales: locale });
const formats = [
'YYYY-MM-DD HH:mm:ss',
'dddd, MMMM Do YYYY — hh:mm:ss a',
'ddd D MMM \'YY',
'h:mm A',
] as const;
const locales = [
{ value: 'en-US', label: 'English' },
{ value: 'fr-FR', label: 'Français' },
{ value: 'de-DE', label: 'Deutsch' },
{ value: 'ja-JP', label: '日本語' },
] as const;
const isValid = computed(() => formatted.value !== 'Invalid Date');
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Formatted output
</div>
<div
class="mt-2 font-mono text-lg font-semibold tabular-nums"
:class="isValid ? 'text-(--fg)' : 'text-red-600 dark:text-red-400'"
>
{{ formatted }}
</div>
</div>
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Date input
</label>
<input
v-model="date"
type="datetime-local"
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)"
>
</div>
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Format token string
</label>
<input
v-model="format"
type="text"
spellcheck="false"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 font-mono text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
<div class="flex flex-wrap gap-1.5 pt-1">
<button
v-for="f in formats"
:key="f"
class="rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 font-mono text-xs text-(--fg-muted) transition hover:bg-(--bg-elevated) hover:text-(--fg) active:scale-[0.98] cursor-pointer"
:class="{ 'border-(--accent) text-(--accent-text)': format === f }"
@click="format = f"
>
{{ f }}
</button>
</div>
</div>
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Locale
</label>
<div class="flex flex-wrap gap-2">
<button
v-for="loc in locales"
:key="loc.value"
class="rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="locale === loc.value
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="locale = loc.value"
>
{{ loc.label }}
</button>
</div>
</div>
</div>
</template>
@@ -0,0 +1,92 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useInterval } from './index';
const interval = ref(1000);
const { counter, isActive, pause, resume, reset } = useInterval(interval, {
controls: true,
immediate: true,
});
// A simple visual pulse driven purely off the reactive tick counter.
const beats = computed(() => Array.from({ length: 8 }, (_, i) => i === counter.value % 8));
const speeds = [
{ value: 2000, label: 'Slow' },
{ value: 1000, label: 'Normal' },
{ value: 400, label: 'Fast' },
] as const;
function toggle() {
if (isActive.value)
pause();
else
resume();
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-5 text-center">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Ticks elapsed
</div>
<div class="mt-2 font-mono text-5xl font-bold tabular-nums text-(--fg)">
{{ counter }}
</div>
<div class="mt-4 flex items-center justify-center gap-1.5">
<span
v-for="(on, i) in beats"
:key="i"
class="size-2.5 rounded-full transition-colors duration-200"
:class="on ? 'bg-(--accent)' : 'bg-(--bg-inset)'"
/>
</div>
<div class="mt-4 flex items-center justify-center gap-2 text-xs text-(--fg-subtle)">
<span
class="inline-block size-2 rounded-full transition"
:class="isActive ? 'bg-emerald-500' : 'bg-(--border-strong)'"
/>
{{ isActive ? `Ticking every ${interval}ms` : 'Paused' }}
</div>
</div>
<div class="flex flex-col gap-1.5">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Interval speed
</div>
<div class="flex gap-2">
<button
v-for="speed in speeds"
:key="speed.value"
class="flex-1 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="interval === speed.value
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="interval = speed.value"
>
{{ speed.label }}
</button>
</div>
</div>
<div class="flex items-center gap-2">
<button
class="flex-1 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"
@click="toggle"
>
{{ isActive ? 'Pause' : 'Resume' }}
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="counter === 0"
@click="reset"
>
Reset
</button>
</div>
</div>
</template>
@@ -0,0 +1,124 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useIntervalFn } from './index';
const interval = ref(800);
const logs = ref<{ id: number; time: string }[]>([]);
let nextId = 0;
const { isActive, pause, resume, toggle } = useIntervalFn(
() => {
logs.value.unshift({
id: nextId++,
time: new Date().toLocaleTimeString(undefined, { hour12: false }),
});
if (logs.value.length > 6)
logs.value.length = 6;
},
interval,
{ immediate: false },
);
const speeds = [
{ value: 1500, label: 'Slow' },
{ value: 800, label: 'Normal' },
{ value: 300, label: 'Fast' },
] as const;
function clear() {
logs.value = [];
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div>
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Interval callback
</div>
<div class="mt-1 flex items-center gap-2 text-sm text-(--fg-muted)">
<span
class="inline-block size-2 rounded-full transition"
:class="isActive ? 'bg-emerald-500' : 'bg-(--border-strong)'"
/>
{{ isActive ? `Firing every ${interval}ms` : 'Stopped' }}
</div>
</div>
<button
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"
@click="toggle"
>
{{ isActive ? 'Pause' : 'Start' }}
</button>
</div>
<div class="flex flex-col gap-1.5">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Interval
</div>
<div class="flex gap-2">
<button
v-for="speed in speeds"
:key="speed.value"
class="flex-1 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="interval === speed.value
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="interval = speed.value"
>
{{ speed.label }}
</button>
</div>
<p class="text-xs text-(--fg-subtle)">
Changing the interval while running restarts the timer with the new duration.
</p>
</div>
<div class="flex items-center justify-between">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Tick log
</div>
<button
class="text-xs text-(--accent-text) transition hover:underline disabled:cursor-not-allowed disabled:opacity-40 cursor-pointer"
:disabled="logs.length === 0"
@click="clear"
>
Clear
</button>
</div>
<div class="min-h-32 rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<p v-if="logs.length === 0" class="py-6 text-center text-sm text-(--fg-subtle)">
No ticks yet press Start.
</p>
<ul v-else class="flex flex-col gap-1.5">
<li
v-for="log in logs"
:key="log.id"
class="flex items-center gap-2 font-mono text-sm tabular-nums text-(--fg)"
>
<span class="inline-block size-1.5 rounded-full bg-(--accent)" />
{{ log.time }}
</li>
</ul>
</div>
<div class="flex items-center gap-2">
<button
class="flex-1 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="isActive"
@click="resume"
>
Resume
</button>
<button
class="flex-1 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!isActive"
@click="pause"
>
Pause
</button>
</div>
</div>
</template>
@@ -0,0 +1,83 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useNow } from './index';
const { now, isActive, pause, resume, toggle } = useNow({ controls: true, interval: 'requestAnimationFrame' });
const time = computed(() =>
now.value.toLocaleTimeString('en-US', { hour12: false, hour: '2-digit', minute: '2-digit', second: '2-digit' }),
);
const millis = computed(() => now.value.getMilliseconds().toString().padStart(3, '0'));
const date = computed(() =>
now.value.toLocaleDateString('en-US', { weekday: 'long', month: 'long', day: 'numeric', year: 'numeric' }),
);
// A sweeping second hand driven entirely by the reactive `now`.
const secondAngle = computed(() => {
const seconds = now.value.getSeconds() + now.value.getMilliseconds() / 1000;
return seconds / 60 * 360;
});
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col items-center gap-3">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Reactive now</div>
<div class="flex items-baseline gap-1">
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ time }}</span>
<span class="font-mono text-lg font-semibold tabular-nums text-(--fg-subtle)">.{{ millis }}</span>
</div>
<div class="text-sm text-(--fg-muted)">{{ date }}</div>
<div class="relative mt-1 size-24 rounded-full border-2 border-(--border-strong) bg-(--bg-inset)">
<div class="absolute inset-0 flex items-center justify-center">
<div class="size-1.5 rounded-full bg-(--accent)" />
</div>
<div
class="absolute bottom-1/2 left-1/2 h-9 w-0.5 origin-bottom rounded-full bg-(--accent)"
:style="{ transform: `translateX(-50%) rotate(${secondAngle}deg)` }"
/>
</div>
</div>
<div class="flex items-center justify-between gap-3">
<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)"
>
<span
class="size-1.5 rounded-full transition"
:class="isActive ? 'bg-emerald-500' : 'bg-(--fg-subtle)'"
/>
{{ isActive ? 'Ticking (RAF)' : 'Paused' }}
</span>
<div class="flex items-center gap-2">
<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="toggle"
>
{{ isActive ? 'Pause' : 'Resume' }}
</button>
<button
type="button"
:disabled="isActive"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="resume"
>
Resume
</button>
<button
type="button"
:disabled="!isActive"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="pause"
>
Pause
</button>
</div>
</div>
</div>
</template>
@@ -0,0 +1,99 @@
<script setup lang="ts">
import { computed, ref, shallowRef } from 'vue';
import { useRafFn } from './index';
const fpsLimit = ref(0);
const position = ref(0);
const direction = ref(1);
const delta = shallowRef(0);
const fps = shallowRef(0);
const frames = ref(0);
const { isActive, pause, resume, toggle } = useRafFn(
({ delta: d }) => {
delta.value = d;
fps.value = d > 0 ? Math.round(1000 / d) : 0;
frames.value++;
// Bounce a marker across the track using real frame delta (px per second).
position.value += direction.value * (d / 1000) * 120;
if (position.value >= 100) {
position.value = 100;
direction.value = -1;
}
else if (position.value <= 0) {
position.value = 0;
direction.value = 1;
}
},
{ fpsLimit: fpsLimit.value || undefined },
);
const limitLabel = computed(() => (fpsLimit.value === 0 ? 'Unlimited' : `${fpsLimit.value} fps`));
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">requestAnimationFrame</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)"
>
<span class="size-1.5 rounded-full transition" :class="isActive ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ isActive ? 'Running' : 'Paused' }}
</span>
</div>
<!-- The animated track: marker position is updated every frame -->
<div class="relative mx-2.5 h-8 rounded-lg border border-(--border) bg-(--bg-inset)">
<div
class="absolute top-1/2 size-5 -translate-x-1/2 -translate-y-1/2 rounded-full bg-(--accent) shadow"
:style="{ left: `${position}%` }"
/>
</div>
<div class="grid grid-cols-3 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center">
<div class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ fps }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">fps</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center">
<div class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ delta.toFixed(1) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">delta ms</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center">
<div class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ frames }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">frames</div>
</div>
</div>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="fps-limit">FPS limit</label>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ limitLabel }}</span>
</div>
<input
id="fps-limit"
v-model.number="fpsLimit"
type="range"
min="0"
max="60"
step="5"
class="w-full accent-(--accent) cursor-pointer"
>
<p class="text-xs text-(--fg-subtle)">Changing the limit takes effect on the next mount; toggle below to see it live.</p>
</div>
<button
type="button"
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"
@click="toggle"
>
{{ isActive ? 'Pause loop' : 'Resume loop' }}
</button>
</div>
</template>
@@ -0,0 +1,86 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useTimeAgo } from './index';
interface Preset {
label: string;
offset: number;
}
// Offsets in ms relative to now; negative = past, positive = future.
const presets: Preset[] = [
{ label: '15 s ago', offset: -15_000 },
{ label: '3 min ago', offset: -3 * 60_000 },
{ label: '2 h ago', offset: -2 * 3_600_000 },
{ label: 'Yesterday', offset: -86_400_000 },
{ label: 'Last week', offset: -7 * 86_400_000 },
{ label: '5 months ago', offset: -5 * 2_592_000_000 },
{ label: 'In 45 min', offset: 45 * 60_000 },
{ label: 'Next year', offset: 31_536_000_000 },
];
const offset = ref(presets[1]!.offset);
// Reactive getter recomputed each tick so the string stays live.
const target = computed(() => Date.now() + offset.value);
const { timeAgo, isActive, toggle } = useTimeAgo(target, {
controls: true,
updateInterval: 1000,
showSecond: true,
});
const absolute = computed(() =>
new Date(target.value).toLocaleString('en-US', {
month: 'short',
day: 'numeric',
hour: '2-digit',
minute: '2-digit',
second: '2-digit',
}),
);
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col items-center gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Relative time</span>
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg) text-center">{{ timeAgo }}</span>
<span class="text-xs text-(--fg-muted)">{{ absolute }}</span>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Pick an instant</span>
<div class="grid grid-cols-2 gap-2">
<button
v-for="preset in presets"
:key="preset.label"
type="button"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="offset === preset.offset
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="offset = preset.offset"
>
{{ preset.label }}
</button>
</div>
</div>
<div class="flex items-center justify-between gap-3">
<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)"
>
<span class="size-1.5 rounded-full transition" :class="isActive ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ isActive ? 'Updating every 1s' : 'Updates paused' }}
</span>
<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="toggle"
>
{{ isActive ? 'Pause' : 'Resume' }}
</button>
</div>
</div>
</template>
@@ -0,0 +1,81 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useTimeout } from './index';
const delay = ref(3000);
const firedAt = ref<string | null>(null);
const { ready, start, stop } = useTimeout(delay, {
controls: true,
immediate: false,
callback: () => {
firedAt.value = new Date().toLocaleTimeString('en-US', { hour12: false });
},
});
function restart() {
firedAt.value = null;
start();
}
function cancel() {
stop();
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col items-center gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Status</span>
<div
class="flex size-20 items-center justify-center rounded-full border-2 transition"
:class="ready
? 'border-emerald-500/40 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'"
>
<span class="text-sm font-semibold">{{ ready ? 'Ready' : 'Pending' }}</span>
</div>
<p class="text-center text-sm text-(--fg-muted)">
<template v-if="ready && firedAt">Fired at <span class="font-mono tabular-nums text-(--fg)">{{ firedAt }}</span></template>
<template v-else-if="ready">Idle start the timer below</template>
<template v-else>Counting down stays pending until the delay elapses</template>
</p>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="delay">Delay</label>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ (delay / 1000).toFixed(1) }}s</span>
</div>
<input
id="delay"
v-model.number="delay"
type="range"
min="500"
max="5000"
step="500"
class="w-full accent-(--accent) cursor-pointer"
>
</div>
<div class="flex items-center gap-2">
<button
type="button"
class="flex-1 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"
@click="restart"
>
{{ ready ? 'Start' : 'Restart' }}
</button>
<button
type="button"
:disabled="ready"
class="flex-1 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="cancel"
>
Cancel
</button>
</div>
</div>
</template>
@@ -0,0 +1,95 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useTimeoutFn } from './index';
interface Mail {
id: number;
from: string;
subject: string;
}
const inbox = ref<Mail[]>([
{ id: 1, from: 'Ada Lovelace', subject: 'Notes on the Analytical Engine' },
{ id: 2, from: 'Grace Hopper', subject: 'Found a bug in the relay' },
{ id: 3, from: 'Alan Turing', subject: 'Re: Halting problem' },
]);
const pendingDelete = ref<Mail | null>(null);
// After the grace period elapses the mail is permanently removed.
const { isPending, start, stop } = useTimeoutFn(
() => {
if (pendingDelete.value)
inbox.value = inbox.value.filter(m => m.id !== pendingDelete.value!.id);
pendingDelete.value = null;
},
5000,
{ immediate: false },
);
function archive(mail: Mail) {
stop();
pendingDelete.value = mail;
start();
}
function undo() {
stop();
pendingDelete.value = null;
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Inbox · undo with grace period</span>
<ul v-if="inbox.length" class="flex flex-col gap-2">
<li
v-for="mail in inbox"
:key="mail.id"
class="flex items-center justify-between gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-3 transition"
:class="{ 'opacity-40': pendingDelete?.id === mail.id }"
>
<div class="min-w-0">
<div class="truncate text-sm font-medium text-(--fg)">{{ mail.subject }}</div>
<div class="truncate text-xs text-(--fg-muted)">{{ mail.from }}</div>
</div>
<button
type="button"
:disabled="isPending"
class="shrink-0 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="archive(mail)"
>
Archive
</button>
</li>
</ul>
<div v-else class="rounded-xl border border-dashed border-(--border) bg-(--bg-inset) p-6 text-center text-sm text-(--fg-subtle)">
Inbox zero everything archived.
</div>
<Transition
enter-active-class="transition duration-200" enter-from-class="opacity-0 translate-y-1"
leave-active-class="transition duration-150" leave-to-class="opacity-0 translate-y-1"
>
<div
v-if="isPending && pendingDelete"
class="flex items-center justify-between gap-3 rounded-lg border border-amber-500/30 bg-amber-500/10 px-3 py-2"
>
<span class="flex items-center gap-2 text-sm text-amber-700 dark:text-amber-400">
<span class="size-1.5 animate-pulse rounded-full bg-amber-500" />
Archiving {{ pendingDelete.subject }}
</span>
<button
type="button"
class="inline-flex items-center justify-center gap-1.5 rounded-md px-2 py-0.5 text-sm font-semibold text-amber-700 underline-offset-2 transition hover:underline dark:text-amber-400 cursor-pointer"
@click="undo"
>
Undo
</button>
</div>
</Transition>
</div>
</template>
@@ -0,0 +1,110 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useTimestamp } from './index';
const interval = ref(1000);
const offset = ref(0);
const { timestamp, isActive, pause, resume } = useTimestamp({
controls: true,
interval: 1000,
offset,
});
const clockTime = computed(() =>
new Date(timestamp.value).toLocaleTimeString(undefined, {
hour: '2-digit',
minute: '2-digit',
second: '2-digit',
hour12: false,
}),
);
const clockDate = computed(() =>
new Date(timestamp.value).toLocaleDateString(undefined, {
weekday: 'short',
month: 'short',
day: 'numeric',
}),
);
function toggle() {
if (isActive.value)
pause();
else
resume();
}
function shift(ms: number) {
offset.value += ms;
}
function resetOffset() {
offset.value = 0;
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 text-center">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Reactive timestamp
</div>
<div class="mt-2 font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ clockTime }}
</div>
<div class="mt-1 text-sm text-(--fg-muted)">
{{ clockDate }}
</div>
<div class="mt-3 flex items-center justify-center gap-2 text-xs text-(--fg-subtle)">
<span
class="inline-block size-2 rounded-full transition"
:class="isActive ? 'bg-emerald-500' : 'bg-(--border-strong)'"
/>
{{ isActive ? 'Updating every second' : 'Paused' }}
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
{{ Math.round(timestamp) }} ms
</div>
<div class="flex items-center justify-between gap-2">
<button
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"
@click="toggle"
>
{{ isActive ? 'Pause' : 'Resume' }}
</button>
<div class="flex items-center gap-2">
<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="shift(-3600_000)"
>
-1h
</button>
<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="shift(3600_000)"
>
+1h
</button>
</div>
</div>
<div class="flex items-center justify-between text-sm text-(--fg-muted)">
<span>
Offset:
<span class="font-mono text-(--fg) tabular-nums">{{ (offset / 3600_000).toFixed(0) }}h</span>
</span>
<button
class="text-(--accent-text) transition hover:underline disabled:cursor-not-allowed disabled:opacity-40 cursor-pointer"
:disabled="offset === 0"
@click="resetOffset"
>
Reset offset
</button>
</div>
</div>
</template>
@@ -0,0 +1,133 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { TransitionPresets, useTransition } from './index';
type PresetName = keyof typeof TransitionPresets;
const presetNames = Object.keys(TransitionPresets) as PresetName[];
const preset = ref<PresetName>('easeOutCubic');
const duration = ref(800);
// Animated progress value (0100).
const target = ref(72);
const value = useTransition(target, {
duration,
transition: computed(() => TransitionPresets[preset.value]),
});
// Animated color tuple (RGB).
const swatches: Array<[string, [number, number, number]]> = [
['Indigo', [99, 102, 241]],
['Emerald', [16, 185, 129]],
['Amber', [245, 158, 11]],
['Rose', [244, 63, 94]],
];
const colorTarget = ref<[number, number, number]>([99, 102, 241]);
const color = useTransition(colorTarget, {
duration: 600,
transition: TransitionPresets.easeInOutQuad,
});
const colorCss = computed(() => {
const [r, g, b] = color.value;
return `rgb(${Math.round(r)}, ${Math.round(g)}, ${Math.round(b)})`;
});
function randomize() {
target.value = Math.round(Math.random() * 100);
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-5">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-baseline justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Eased value
</span>
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ value.toFixed(1) }}
</span>
</div>
<div class="mt-3 h-2.5 w-full overflow-hidden rounded-full bg-(--bg-inset)">
<div
class="h-full rounded-full bg-(--accent)"
:style="{ width: `${Math.max(0, Math.min(100, value))}%` }"
/>
</div>
<div class="mt-4 flex items-center gap-3">
<input
v-model.number="target"
type="range"
min="0"
max="100"
class="h-1.5 flex-1 cursor-pointer accent-(--accent)"
>
<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="randomize"
>
Random
</button>
</div>
</div>
<div class="flex flex-col gap-2">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Easing preset
</label>
<select
v-model="preset"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
<option v-for="name in presetNames" :key="name" :value="name">
{{ name }}
</option>
</select>
<label class="mt-1 flex items-center justify-between text-sm text-(--fg-muted)">
<span>Duration</span>
<span class="font-mono text-(--fg) tabular-nums">{{ duration }}ms</span>
</label>
<input
v-model.number="duration"
type="range"
min="100"
max="2000"
step="100"
class="h-1.5 w-full cursor-pointer accent-(--accent)"
>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center gap-3">
<div
class="size-12 shrink-0 rounded-lg border border-(--border)"
:style="{ backgroundColor: colorCss }"
/>
<div class="min-w-0">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Animated tuple
</div>
<div class="font-mono text-sm text-(--fg) tabular-nums">
{{ colorCss }}
</div>
</div>
</div>
<div class="mt-3 flex flex-wrap gap-2">
<button
v-for="[label, rgb] in swatches"
:key="label"
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) transition hover:border-(--border-strong) cursor-pointer"
@click="colorTarget = [...rgb]"
>
<span class="size-2.5 rounded-full" :style="{ backgroundColor: `rgb(${rgb.join(',')})` }" />
{{ label }}
</button>
</div>
</div>
</div>
</template>
@@ -0,0 +1,97 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArrayDifference } from './index';
interface Track {
id: number;
title: string;
}
const library: Track[] = [
{ id: 1, title: 'Midnight City' },
{ id: 2, title: 'Strobe' },
{ id: 3, title: 'Open Eye Signal' },
{ id: 4, title: 'Innerbloom' },
{ id: 5, title: 'Teardrop' },
{ id: 6, title: 'Resonance' },
];
const list = ref<Track[]>([...library]);
const playlist = ref<Track[]>([library[1], library[3]]);
const symmetric = ref(false);
// Compare tracks by their `id` key.
const diff = useArrayDifference(list, playlist, 'id', {
get symmetric() {
return symmetric.value;
},
});
function inPlaylist(track: Track) {
return playlist.value.some(t => t.id === track.id);
}
function toggle(track: Track) {
if (inPlaylist(track))
playlist.value = playlist.value.filter(t => t.id !== track.id);
else
playlist.value = [...playlist.value, track];
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Library tap to add / remove from playlist
</span>
<label class="inline-flex cursor-pointer items-center gap-2 text-sm text-(--fg-muted)">
<input
v-model="symmetric"
type="checkbox"
class="size-4 cursor-pointer accent-(--accent)"
>
Symmetric
</label>
</div>
<div class="grid grid-cols-2 gap-2">
<button
v-for="track in library"
:key="track.id"
class="inline-flex items-center justify-between gap-2 rounded-lg border px-3 py-2 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="inPlaylist(track)
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="toggle(track)"
>
<span class="truncate">{{ track.title }}</span>
<span class="shrink-0 text-xs opacity-70">{{ inPlaylist(track) ? '' : '+' }}</span>
</button>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-baseline justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
{{ symmetric ? 'In exactly one (XOR)' : 'Not in playlist' }}
</span>
<span class="font-mono text-sm tabular-nums text-(--fg-muted)">
{{ diff.length }}
</span>
</div>
<ul v-if="diff.length" class="mt-3 flex flex-wrap gap-2">
<li
v-for="track in diff"
:key="track.id"
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)"
>
{{ track.title }}
</li>
</ul>
<p v-else class="mt-3 text-sm text-(--fg-subtle)">
No difference every track matches.
</p>
</div>
</div>
</template>
@@ -0,0 +1,90 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useArrayEvery } from './index';
interface Check {
id: number;
label: string;
done: boolean;
}
const checklist = ref<Check[]>([
{ id: 1, label: 'Build passes', done: true },
{ id: 2, label: 'Tests green', done: true },
{ id: 3, label: 'Types check', done: false },
{ id: 4, label: 'Docs updated', done: false },
]);
// True only when every item is done.
const allDone = useArrayEvery(checklist, item => item.done);
const completed = computed(() => checklist.value.filter(c => c.done).length);
function toggle(item: Check) {
item.done = !item.done;
}
function reset() {
checklist.value.forEach(c => (c.done = false));
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
class="rounded-xl border p-4 transition"
:class="allDone
? 'border-emerald-500/30 bg-emerald-500/10'
: 'border-(--border) bg-(--bg-elevated)'"
>
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Release readiness
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="allDone
? 'border-emerald-500/30 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
<span
class="size-2 rounded-full"
:class="allDone ? 'bg-emerald-500' : 'bg-amber-500'"
/>
{{ allDone ? 'Ready to ship' : 'Blocked' }}
</span>
</div>
<div class="mt-2 font-mono text-sm tabular-nums text-(--fg-muted)">
{{ completed }} / {{ checklist.length }} complete
</div>
</div>
<ul class="flex flex-col gap-2">
<li v-for="item in checklist" :key="item.id">
<button
class="flex w-full items-center gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2 text-left text-sm text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.99] cursor-pointer"
@click="toggle(item)"
>
<span
class="flex size-5 shrink-0 items-center justify-center rounded-md border text-xs transition"
:class="item.done
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border-strong) text-transparent'"
>
</span>
<span :class="item.done ? 'line-through text-(--fg-subtle)' : ''">
{{ item.label }}
</span>
</button>
</li>
</ul>
<button
class="inline-flex items-center justify-center gap-1.5 self-start 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
</button>
</div>
</template>
@@ -0,0 +1,101 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useArrayFilter } from './index';
interface Product {
name: string;
price: number;
inStock: boolean;
}
const products = ref<Product[]>([
{ name: 'Mechanical Keyboard', price: 129, inStock: true },
{ name: 'USB-C Hub', price: 49, inStock: false },
{ name: '4K Monitor', price: 399, inStock: true },
{ name: 'Webcam', price: 79, inStock: true },
{ name: 'Desk Mat', price: 25, inStock: false },
{ name: 'Wireless Mouse', price: 59, inStock: true },
]);
const query = ref('');
const maxPrice = ref(400);
const inStockOnly = ref(true);
// Reactive filter: name match + price ceiling + stock toggle.
const visible = useArrayFilter(products, (product) => {
const matchesName = product.name.toLowerCase().includes(query.value.trim().toLowerCase());
const matchesPrice = product.price <= maxPrice.value;
const matchesStock = !inStockOnly.value || product.inStock;
return matchesName && matchesPrice && matchesStock;
});
const formatted = computed(() =>
visible.value.map(p => ({ ...p, priceLabel: `$${p.price}` })),
);
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<input
v-model="query"
type="text"
placeholder="Search products…"
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)"
>
<div class="flex flex-col gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<label class="flex items-center justify-between text-sm text-(--fg-muted)">
<span>Max price</span>
<span class="font-mono text-(--fg) tabular-nums">${{ maxPrice }}</span>
</label>
<input
v-model.number="maxPrice"
type="range"
min="25"
max="400"
step="5"
class="h-1.5 w-full cursor-pointer accent-(--accent)"
>
<label class="inline-flex cursor-pointer items-center gap-2 text-sm text-(--fg-muted)">
<input
v-model="inStockOnly"
type="checkbox"
class="size-4 cursor-pointer accent-(--accent)"
>
In stock only
</label>
</div>
<div class="flex items-center justify-between text-xs">
<span class="font-medium uppercase tracking-wide text-(--fg-subtle)">Results</span>
<span class="font-mono tabular-nums text-(--fg-muted)">
{{ formatted.length }} / {{ products.length }}
</span>
</div>
<ul v-if="formatted.length" class="flex flex-col gap-2">
<li
v-for="product in formatted"
:key="product.name"
class="flex items-center justify-between gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2"
>
<div class="flex items-center gap-2">
<span class="text-sm font-medium text-(--fg)">{{ product.name }}</span>
<span
v-if="!product.inStock"
class="inline-flex items-center rounded-md border border-amber-500/30 bg-amber-500/10 px-1.5 py-0.5 text-[10px] font-medium uppercase text-amber-600 dark:text-amber-400"
>
Out
</span>
</div>
<span class="font-mono text-sm tabular-nums text-(--fg-muted)">{{ product.priceLabel }}</span>
</li>
</ul>
<div
v-else
class="rounded-lg border border-dashed border-(--border) bg-(--bg-inset) px-3 py-6 text-center text-sm text-(--fg-subtle)"
>
No products match your filters.
</div>
</div>
</template>
@@ -0,0 +1,101 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useArrayFind } from './index';
interface Product {
id: number;
name: string;
price: number;
inStock: boolean;
}
const catalog = ref<Product[]>([
{ id: 1, name: 'Mechanical Keyboard', price: 129, inStock: false },
{ id: 2, name: 'USB-C Hub', price: 49, inStock: true },
{ id: 3, name: 'Desk Mat', price: 24, inStock: true },
{ id: 4, name: '4K Monitor', price: 399, inStock: true },
{ id: 5, name: 'Webcam', price: 89, inStock: false },
]);
const maxPrice = ref(100);
const inStockOnly = ref(true);
// Reactive Array.prototype.find — re-evaluates when the list, the price
// threshold or the toggle change.
const firstMatch = useArrayFind(
catalog,
product =>
product.price <= maxPrice.value
&& (!inStockOnly.value || product.inStock),
);
const matchIndex = computed(() =>
firstMatch.value ? catalog.value.indexOf(firstMatch.value) : -1,
);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="space-y-3">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="maxPrice">
Max price
</label>
<span class="font-mono text-sm tabular-nums text-(--fg)">${{ maxPrice }}</span>
</div>
<input
id="maxPrice"
v-model.number="maxPrice"
type="range"
min="20"
max="400"
step="5"
class="w-full accent-(--accent)"
>
<label class="flex cursor-pointer items-center gap-2 text-sm text-(--fg-muted)">
<input v-model="inStockOnly" type="checkbox" class="accent-(--accent)">
In stock only
</label>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<p class="mb-1 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
First match
</p>
<template v-if="firstMatch">
<div class="flex items-baseline justify-between">
<span class="text-sm font-medium text-(--fg)">{{ firstMatch.name }}</span>
<span class="font-mono text-sm tabular-nums text-(--fg)">${{ firstMatch.price }}</span>
</div>
<p class="mt-1 font-mono text-xs text-(--fg-subtle)">
index {{ matchIndex }} · id {{ firstMatch.id }}
</p>
</template>
<p v-else class="text-sm text-(--fg-subtle)">
No product matches the filters
</p>
</div>
<ul class="flex flex-col gap-1.5">
<li
v-for="product in catalog"
:key="product.id"
class="flex items-center justify-between rounded-lg border px-3 py-2 text-sm transition"
:class="product.id === firstMatch?.id
? 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg-muted)'"
>
<span class="flex items-center gap-2">
{{ product.name }}
<span
v-if="!product.inStock"
class="inline-flex items-center rounded-md border border-amber-500/30 bg-amber-500/10 px-1.5 py-0.5 text-xs font-medium text-amber-600 dark:text-amber-400"
>
out of stock
</span>
</span>
<span class="font-mono tabular-nums">${{ product.price }}</span>
</li>
</ul>
</div>
</template>
@@ -0,0 +1,63 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArrayFindIndex } from './index';
interface Step {
label: string;
done: boolean;
}
const steps = ref<Step[]>([
{ label: 'Clone repository', done: true },
{ label: 'Install dependencies', done: true },
{ label: 'Run database migrations', done: false },
{ label: 'Seed sample data', done: false },
{ label: 'Start dev server', done: false },
]);
// Reactive Array.prototype.findIndex — points at the first step still pending.
const nextIndex = useArrayFindIndex(steps, step => !step.done);
function toggle(index: number) {
steps.value[index]!.done = !steps.value[index]!.done;
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Next pending index
</p>
<p class="mt-1 font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ nextIndex }}
</p>
<p class="mt-1 text-sm text-(--fg-subtle)">
{{ nextIndex === -1 ? 'All steps complete' : `${steps[nextIndex]!.label}` }}
</p>
</div>
<ol class="flex flex-col gap-1.5">
<li
v-for="(step, index) in steps"
:key="step.label"
class="flex items-center justify-between rounded-lg border px-3 py-2 text-sm transition"
:class="index === nextIndex
? 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg-muted)'"
>
<span class="flex items-center gap-2">
<span class="font-mono text-xs tabular-nums text-(--fg-subtle)">{{ index }}</span>
<span :class="step.done ? 'line-through opacity-60' : ''">{{ step.label }}</span>
</span>
<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="toggle(index)"
>
{{ step.done ? 'Undo' : 'Done' }}
</button>
</li>
</ol>
</div>
</template>
@@ -0,0 +1,100 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArrayFindLast } from './index';
interface LogEntry {
id: number;
level: 'info' | 'warn' | 'error';
message: string;
}
let nextId = 6;
const log = ref<LogEntry[]>([
{ id: 1, level: 'info', message: 'Server started on :3000' },
{ id: 2, level: 'warn', message: 'Cache miss for key "user:42"' },
{ id: 3, level: 'error', message: 'Failed to reach payments API' },
{ id: 4, level: 'info', message: 'Request handled in 12ms' },
{ id: 5, level: 'warn', message: 'Deprecated header received' },
]);
const filter = ref<LogEntry['level']>('warn');
// Reactive Array.prototype.findLast — the most recent entry at this level.
const latest = useArrayFindLast(log, entry => entry.level === filter.value);
const samples: LogEntry['message'][] = [
'Disk usage at 82%',
'New WebSocket connection',
'Token refresh failed',
];
function append(level: LogEntry['level']) {
const message = samples[Math.floor(Math.random() * samples.length)]!;
log.value.push({ id: nextId++, level, message });
}
const levels: LogEntry['level'][] = ['info', 'warn', 'error'];
const tone: Record<LogEntry['level'], string> = {
info: 'text-sky-600 dark:text-sky-400',
warn: 'text-amber-600 dark:text-amber-400',
error: 'text-red-600 dark:text-red-400',
};
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex gap-1.5">
<button
v-for="level in levels"
:key="level"
type="button"
class="flex-1 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="filter === level
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset)'"
@click="filter = level"
>
{{ level }}
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Latest {{ filter }} entry
</p>
<template v-if="latest">
<p class="mt-1 font-mono text-sm text-(--fg)">{{ latest.message }}</p>
<p class="mt-1 font-mono text-xs text-(--fg-subtle)">#{{ latest.id }}</p>
</template>
<p v-else class="mt-1 text-sm text-(--fg-subtle)">
No {{ filter }} entries yet
</p>
</div>
<ul class="flex max-h-44 flex-col gap-1 overflow-y-auto rounded-lg border border-(--border) bg-(--bg-elevated) p-2">
<li
v-for="entry in log"
:key="entry.id"
class="flex items-center gap-2 rounded-md px-2 py-1 font-mono text-xs transition"
:class="entry.id === latest?.id ? 'bg-(--accent-subtle)' : ''"
>
<span class="w-10 shrink-0 font-semibold uppercase" :class="tone[entry.level]">
{{ entry.level }}
</span>
<span class="truncate text-(--fg-muted)">{{ entry.message }}</span>
</li>
</ul>
<div class="flex gap-1.5">
<button
v-for="level in levels"
:key="level"
type="button"
class="flex-1 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="append(level)"
>
+ {{ level }}
</button>
</div>
</div>
</template>
@@ -0,0 +1,97 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArrayIncludes } from './index';
interface User {
id: number;
name: string;
}
const team = ref<User[]>([
{ id: 11, name: 'Ada' },
{ id: 22, name: 'Linus' },
{ id: 33, name: 'Grace' },
{ id: 44, name: 'Dennis' },
]);
// Search by an object key — `id` is compared against the searched value.
const searchId = ref(33);
const isMember = useArrayIncludes(team, searchId, 'id');
// Plain primitive membership with a reactive `fromIndex` option.
const tags = ref(['vue', 'reactive', 'composable', 'reactive']);
const query = ref('reactive');
const fromIndex = ref(2);
const hasTag = useArrayIncludes(tags, query, { fromIndex: fromIndex.value });
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<p class="mb-2 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Member by key
</p>
<div class="flex flex-wrap gap-1.5">
<span
v-for="user in team"
:key="user.id"
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition"
:class="user.id === searchId
? 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
{{ user.name }}
<span class="font-mono text-(--fg-subtle)">#{{ user.id }}</span>
</span>
</div>
<div class="mt-3 flex items-center gap-2">
<input
v-model.number="searchId"
type="number"
class="w-24 rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
<span
class="inline-flex items-center gap-1.5 rounded-md px-2 py-1 text-sm font-medium"
:class="isMember
? 'bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'bg-(--bg-inset) text-(--fg-subtle)'"
>
{{ isMember ? 'includes id' : 'not found' }}
</span>
</div>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<p class="mb-2 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Primitive search (fromIndex 2)
</p>
<div class="flex flex-wrap gap-1.5">
<span
v-for="(tag, i) in tags"
:key="i"
class="inline-flex items-center gap-1 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="i < 2
? 'border-(--border) bg-(--bg-inset) text-(--fg-subtle) opacity-50 line-through'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
{{ tag }}
</span>
</div>
<input
v-model="query"
type="text"
placeholder="search a tag…"
class="mt-3 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)"
>
<p class="mt-2 text-sm text-(--fg-muted)">
Searching from index 2
<span
class="font-mono font-semibold"
:class="hasTag ? 'text-emerald-600 dark:text-emerald-400' : 'text-(--fg-subtle)'"
>{{ hasTag }}</span>
</p>
</div>
</div>
</template>
@@ -0,0 +1,99 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArrayJoin } from './index';
const segments = ref<string[]>(['users', 'robonen', 'projects', 'tools']);
const separator = ref('/');
const draft = ref('');
// Reactive Array.prototype.join — recomputes on item edits and separator change.
const joined = useArrayJoin(segments, separator);
const separators: { label: string; value: string }[] = [
{ label: 'slash', value: '/' },
{ label: 'comma', value: ', ' },
{ label: 'dash', value: ' - ' },
{ label: 'none', value: '' },
];
function add() {
const value = draft.value.trim();
if (!value)
return;
segments.value.push(value);
draft.value = '';
}
function remove(index: number) {
segments.value.splice(index, 1);
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<p class="mb-1 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Joined result
</p>
<p class="break-all font-mono text-sm text-(--fg) tabular-nums">
<span v-if="joined">{{ joined }}</span>
<span v-else class="text-(--fg-subtle)">empty</span>
</p>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Separator</span>
<div class="flex gap-1.5">
<button
v-for="sep in separators"
:key="sep.label"
type="button"
class="flex-1 rounded-lg border px-2 py-1.5 text-xs font-medium transition active:scale-[0.98] cursor-pointer"
:class="separator === sep.value
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset)'"
@click="separator = sep.value"
>
{{ sep.label }}
</button>
</div>
</div>
<ul class="flex flex-col gap-1.5">
<li
v-for="(segment, index) in segments"
:key="index"
class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm text-(--fg)"
>
<span class="flex items-center gap-2">
<span class="font-mono text-xs text-(--fg-subtle)">{{ index }}</span>
{{ segment }}
</span>
<button
type="button"
aria-label="Remove segment"
class="rounded-md px-2 py-0.5 text-xs font-medium text-(--fg-subtle) transition hover:bg-(--bg-inset) hover:text-(--fg) cursor-pointer"
@click="remove(index)"
>
</button>
</li>
</ul>
<form class="flex gap-2" @submit.prevent="add">
<input
v-model="draft"
type="text"
placeholder="add a segment…"
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 disabled:cursor-not-allowed disabled:opacity-40"
:disabled="!draft.trim()"
>
Add
</button>
</form>
</div>
</template>
@@ -0,0 +1,95 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useArrayMap } from './index';
interface Product {
name: string;
price: number;
}
const products = ref<Product[]>([
{ name: 'Mechanical keyboard', price: 129 },
{ name: 'Ultrawide monitor', price: 549 },
{ name: 'Noise-cancelling headset', price: 299 },
{ name: 'Standing desk', price: 419 },
]);
const taxRate = ref(8);
// Reactive Array.prototype.map — recomputes when products or taxRate change.
const priced = useArrayMap(products, (product) => {
const gross = product.price * (1 + taxRate.value / 100);
return { ...product, gross };
});
const formatter = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' });
const total = computed(() => priced.value.reduce((sum, p) => sum + p.gross, 0));
function bump(index: number, delta: number) {
const next = products.value.slice();
next[index] = { ...next[index], price: Math.max(0, next[index].price + delta) };
products.value = next;
}
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Cart</span>
<label class="flex items-center gap-2 text-sm text-(--fg-muted)">
Tax {{ taxRate }}%
<input
v-model.number="taxRate"
type="range"
min="0"
max="25"
class="accent-(--accent)"
>
</label>
</div>
<ul class="flex flex-col gap-2">
<li
v-for="(item, index) in priced"
:key="item.name"
class="flex items-center justify-between gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2"
>
<div class="min-w-0 flex-1">
<p class="truncate text-sm font-medium text-(--fg)">
{{ item.name }}
</p>
<p class="text-xs text-(--fg-subtle)">
base {{ formatter.format(item.price) }}
</p>
</div>
<div class="flex items-center gap-1.5">
<button
class="inline-flex size-7 items-center justify-center rounded-md border border-(--border) bg-(--bg-elevated) text-(--fg) transition hover:bg-(--bg-inset) active:scale-[0.98] cursor-pointer"
aria-label="Decrease price"
@click="bump(index, -10)"
>
&minus;
</button>
<button
class="inline-flex size-7 items-center justify-center rounded-md border border-(--border) bg-(--bg-elevated) text-(--fg) transition hover:bg-(--bg-inset) active:scale-[0.98] cursor-pointer"
aria-label="Increase price"
@click="bump(index, 10)"
>
+
</button>
</div>
<span class="w-20 text-right font-mono text-sm tabular-nums text-(--fg)">
{{ formatter.format(item.gross) }}
</span>
</li>
</ul>
<div class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Total with tax</span>
<span class="font-mono text-xl font-bold tabular-nums text-(--fg)">
{{ formatter.format(total) }}
</span>
</div>
</div>
</template>
@@ -0,0 +1,90 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArrayReduce } from './index';
interface Expense {
label: string;
amount: number;
}
const expenses = ref<Expense[]>([
{ label: 'Cloud hosting', amount: 86 },
{ label: 'Domain renewal', amount: 18 },
{ label: 'Design assets', amount: 42 },
{ label: 'Coffee', amount: 7 },
]);
// A reactive seed: the running balance grows as you raise the starting budget.
const startingBudget = ref(500);
// Reactive Array.prototype.reduce with a reactive initial value.
const remaining = useArrayReduce(
expenses,
(balance, expense) => balance - expense.amount,
startingBudget,
);
const formatter = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' });
function add() {
expenses.value = [...expenses.value, { label: 'New charge', amount: 25 }];
}
function removeAt(index: number) {
expenses.value = expenses.value.filter((_, i) => i !== index);
}
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<label class="flex items-center justify-between gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Starting budget</span>
<input
v-model.number="startingBudget"
type="number"
step="50"
class="w-28 rounded-lg border border-(--border) bg-(--bg) px-3 py-1.5 text-right font-mono text-sm tabular-nums text-(--fg) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
</label>
<ul class="flex flex-col gap-2">
<li
v-for="(expense, index) in expenses"
:key="index"
class="flex items-center justify-between gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2"
>
<span class="flex-1 truncate text-sm text-(--fg)">{{ expense.label }}</span>
<span class="font-mono text-sm tabular-nums text-rose-600 dark:text-rose-400">
&minus;{{ formatter.format(expense.amount) }}
</span>
<button
class="inline-flex size-6 items-center justify-center rounded-md text-(--fg-subtle) transition hover:bg-(--bg-inset) hover:text-(--fg) active:scale-[0.98] cursor-pointer"
aria-label="Remove expense"
@click="removeAt(index)"
>
&times;
</button>
</li>
<li v-if="expenses.length === 0" class="rounded-lg border border-dashed border-(--border) px-3 py-4 text-center text-sm text-(--fg-subtle)">
No expenses full budget remains.
</li>
</ul>
<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="add"
>
+ Add charge
</button>
<div class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Remaining</span>
<span
class="font-mono text-2xl font-bold tabular-nums"
:class="remaining < 0 ? 'text-rose-600 dark:text-rose-400' : 'text-emerald-600 dark:text-emerald-400'"
>
{{ formatter.format(remaining) }}
</span>
</div>
</div>
</template>
@@ -0,0 +1,95 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useArraySome } from './index';
interface Server {
name: string;
cpu: number;
}
const servers = ref<Server[]>([
{ name: 'api-west-1', cpu: 32 },
{ name: 'api-east-1', cpu: 54 },
{ name: 'worker-1', cpu: 71 },
{ name: 'db-primary', cpu: 48 },
]);
const threshold = ref(80);
// Reactive Array.prototype.some — true if ANY server is over the threshold.
const hasOverloaded = useArraySome(servers, server => server.cpu > threshold.value);
function load(index: number, delta: number) {
const next = servers.value.slice();
next[index] = { ...next[index], cpu: Math.min(100, Math.max(0, next[index].cpu + delta)) };
servers.value = next;
}
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div
class="flex items-center gap-3 rounded-xl border p-4 transition"
:class="hasOverloaded
? 'border-amber-500/30 bg-amber-500/10'
: 'border-emerald-500/30 bg-emerald-500/10'"
>
<span
class="inline-flex size-2.5 rounded-full"
:class="hasOverloaded ? 'bg-amber-500' : 'bg-emerald-500'"
/>
<p class="text-sm font-medium" :class="hasOverloaded ? 'text-amber-700 dark:text-amber-300' : 'text-emerald-700 dark:text-emerald-300'">
{{ hasOverloaded ? 'At least one server is overloaded' : 'All servers within limits' }}
</p>
</div>
<label class="flex items-center justify-between gap-3 text-sm text-(--fg-muted)">
<span>Alert threshold</span>
<span class="flex items-center gap-2">
<input
v-model.number="threshold"
type="range"
min="40"
max="100"
class="accent-(--accent)"
>
<span class="w-10 text-right font-mono tabular-nums text-(--fg)">{{ threshold }}%</span>
</span>
</label>
<ul class="flex flex-col gap-2">
<li
v-for="(server, index) in servers"
:key="server.name"
class="rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2.5"
>
<div class="mb-1.5 flex items-center justify-between">
<span class="font-mono text-sm text-(--fg)">{{ server.name }}</span>
<span class="flex items-center gap-2">
<span
class="font-mono text-sm tabular-nums"
:class="server.cpu > threshold ? 'text-amber-600 dark:text-amber-400' : 'text-(--fg-muted)'"
>{{ server.cpu }}%</span>
<button
class="inline-flex size-6 items-center justify-center rounded-md border border-(--border) bg-(--bg-elevated) text-(--fg) transition hover:bg-(--bg-inset) active:scale-[0.98] cursor-pointer"
aria-label="Decrease load"
@click="load(index, -10)"
>&minus;</button>
<button
class="inline-flex size-6 items-center justify-center rounded-md border border-(--border) bg-(--bg-elevated) text-(--fg) transition hover:bg-(--bg-inset) active:scale-[0.98] cursor-pointer"
aria-label="Increase load"
@click="load(index, 10)"
>+</button>
</span>
</div>
<div class="h-1.5 w-full overflow-hidden rounded-full bg-(--bg-inset)">
<div
class="h-full rounded-full transition-all"
:class="server.cpu > threshold ? 'bg-amber-500' : 'bg-(--accent)'"
:style="{ width: `${server.cpu}%` }"
/>
</div>
</li>
</ul>
</div>
</template>
@@ -0,0 +1,94 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useArrayUnique } from './index';
const raw = ref<string[]>([
'design',
'Design',
'frontend',
'design',
'FRONTEND',
'vue',
'Vue',
'a11y',
]);
const caseInsensitive = ref(true);
// Switch de-dup strategy reactively:
// - identity (===): "Design" and "design" are distinct
// - comparator: case-insensitive equality folds them together
const exact = useArrayUnique(raw);
const folded = useArrayUnique(raw, (a, b) => a.toLowerCase() === b.toLowerCase());
const unique = computed(() => (caseInsensitive.value ? folded.value : exact.value));
const draft = ref('');
function addTag() {
const value = draft.value.trim();
if (!value)
return;
raw.value = [...raw.value, value];
draft.value = '';
}
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<form class="flex gap-2" @submit.prevent="addTag">
<input
v-model="draft"
type="text"
placeholder="Add a tag, e.g. TypeScript"
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>
<label class="flex items-center justify-between gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2.5 text-sm text-(--fg)">
<span>Case-insensitive comparator</span>
<input
v-model="caseInsensitive"
type="checkbox"
class="size-4 accent-(--accent) cursor-pointer"
>
</label>
<div class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Source ({{ raw.length }})
</span>
<div class="flex flex-wrap gap-1.5 rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span
v-for="(tag, index) in raw"
:key="`${tag}-${index}`"
class="inline-flex items-center rounded-md border border-(--border) bg-(--bg-elevated) px-2 py-0.5 text-xs font-medium text-(--fg-muted)"
>
{{ tag }}
</span>
</div>
</div>
<div class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Unique ({{ unique.length }})
</span>
<div class="flex flex-wrap gap-1.5 rounded-lg border border-(--border) bg-(--bg-elevated) p-3">
<span
v-for="tag in unique"
:key="tag"
class="inline-flex items-center gap-1.5 rounded-md border border-(--accent) bg-(--accent-subtle) px-2 py-0.5 text-xs font-medium text-(--accent-text)"
>
{{ tag }}
</span>
<span v-if="unique.length === 0" class="text-xs text-(--fg-subtle)">No tags yet.</span>
</div>
</div>
</div>
</template>
@@ -0,0 +1,87 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useSorted } from './index';
interface Player {
name: string;
score: number;
level: number;
}
const players = ref<Player[]>([
{ name: 'Nova', score: 1840, level: 12 },
{ name: 'Echo', score: 2310, level: 9 },
{ name: 'Pixel', score: 1840, level: 7 },
{ name: 'Drift', score: 990, level: 14 },
{ name: 'Sable', score: 2310, level: 11 },
]);
type SortKey = 'score' | 'level' | 'name';
const sortKey = ref<SortKey>('score');
const descending = ref(true);
// Reactive, stable sorted copy — the source `players` is never mutated.
// Stable ordering means ties (equal score) keep their original relative order.
const sorted = useSorted(players, (a, b) => {
const direction = descending.value ? -1 : 1;
if (sortKey.value === 'name')
return a.name.localeCompare(b.name) * direction;
return (a[sortKey.value] - b[sortKey.value]) * direction;
});
const keys: { id: SortKey; label: string }[] = [
{ id: 'score', label: 'Score' },
{ id: 'level', label: 'Level' },
{ id: 'name', label: 'Name' },
];
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div class="flex items-center justify-between gap-2">
<div class="inline-flex rounded-lg border border-(--border) bg-(--bg-elevated) p-0.5">
<button
v-for="key in keys"
:key="key.id"
class="rounded-md px-3 py-1 text-sm font-medium transition cursor-pointer"
:class="sortKey === key.id
? 'bg-(--accent) text-(--accent-fg)'
: 'text-(--fg-muted) hover:text-(--fg)'"
@click="sortKey = key.id"
>
{{ key.label }}
</button>
</div>
<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="descending = !descending"
>
{{ descending ? 'Desc ↓' : 'Asc ↑' }}
</button>
</div>
<ol class="flex flex-col gap-2">
<li
v-for="(player, index) in sorted"
:key="player.name"
class="flex items-center gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2.5"
>
<span class="w-6 text-center font-mono text-sm tabular-nums text-(--fg-subtle)">
{{ index + 1 }}
</span>
<span class="flex-1 text-sm font-medium text-(--fg)">{{ player.name }}</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)">
Lv {{ player.level }}
</span>
<span class="w-16 text-right font-mono text-sm font-semibold tabular-nums text-(--fg)">
{{ player.score.toLocaleString() }}
</span>
</li>
</ol>
<p class="text-xs text-(--fg-subtle)">
Stable sort players with an equal {{ sortKey }} keep their original order. The source array is left untouched.
</p>
</div>
</template>
@@ -0,0 +1,98 @@
<script setup lang="ts">
import { computed } from 'vue';
import { broadcastedRef } from './index';
interface CartState {
item: string;
quantity: number;
}
const products = ['Mechanical Keyboard', 'USB-C Hub', 'Desk Mat', 'Wrist Rest'];
// Synced across every open tab via BroadcastChannel
const cart = broadcastedRef<CartState>('docs-demo-cart', { item: products[0], quantity: 1 }, { immediate: true });
const theme = broadcastedRef<'light' | 'dark'>('docs-demo-theme', 'light');
const supported = typeof BroadcastChannel !== 'undefined';
const subtotal = computed(() => cart.value.quantity * 49);
function pick(item: string): void {
cart.value = { ...cart.value, item };
}
function setQuantity(delta: number): void {
cart.value = { ...cart.value, quantity: Math.max(1, cart.value.quantity + delta) };
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Shared cart</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="supported
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'"
>
<span class="h-1.5 w-1.5 rounded-full" :class="supported ? 'bg-emerald-500' : 'bg-amber-500'" />
{{ supported ? 'Broadcasting' : 'Not supported' }}
</span>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex flex-wrap gap-2">
<button
v-for="product in products"
:key="product"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="cart.item === product
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="pick(product)"
>
{{ product }}
</button>
</div>
<div class="mt-4 flex items-center justify-between">
<span class="text-sm text-(--fg-muted)">Quantity</span>
<div class="flex items-center gap-2">
<button
class="inline-flex h-8 w-8 items-center justify-center rounded-lg border border-(--border) bg-(--bg-elevated) 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="cart.quantity <= 1"
@click="setQuantity(-1)"
>
&minus;
</button>
<span class="w-8 text-center font-mono text-lg font-bold tabular-nums text-(--fg)">{{ cart.quantity }}</span>
<button
class="inline-flex h-8 w-8 items-center justify-center rounded-lg border border-(--border) bg-(--bg-elevated) text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="setQuantity(1)"
>
+
</button>
</div>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex justify-between">
<span class="text-(--fg-muted)">{{ cart.item }} &times; {{ cart.quantity }}</span>
<span class="font-bold">${{ subtotal }}</span>
</div>
</div>
<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="theme = theme === 'light' ? 'dark' : 'light'"
>
Toggle shared theme: <span class="font-mono">{{ theme }}</span>
</button>
<p class="text-xs text-(--fg-subtle)">
Open this page in a second tab. Every change you make here is broadcast and mirrored instantly in the other tab.
</p>
</div>
</template>
@@ -0,0 +1,63 @@
<script setup lang="ts">
import { useBreakpoints, breakpointsTailwind } from './index';
const bp = useBreakpoints(breakpointsTailwind);
const active = bp.active();
const current = bp.current();
const isMobile = bp.smaller('md');
const isDesktop = bp.greaterOrEqual('lg');
const rows: { key: 'sm' | 'md' | 'lg' | 'xl' | '2xl'; width: string }[] = [
{ key: 'sm', width: '640px' },
{ key: 'md', width: '768px' },
{ key: 'lg', width: '1024px' },
{ key: 'xl', width: '1280px' },
{ key: '2xl', width: '1536px' },
];
const device = (): string => (isDesktop.value ? 'Desktop' : isMobile.value ? 'Mobile' : 'Tablet');
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Active breakpoint</span>
<div class="mt-1 flex items-baseline gap-2">
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ active || 'none' }}</span>
<span class="rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">{{ device() }}</span>
</div>
</div>
<div class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Tailwind breakpoints</span>
<div
v-for="row in rows"
:key="row.key"
class="flex items-center justify-between rounded-lg border px-3 py-2 text-sm transition"
:class="bp[row.key].value
? 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
<span class="font-mono font-medium">{{ row.key }}</span>
<span class="font-mono tabular-nums text-(--fg-subtle)">&ge; {{ row.width }}</span>
<span
class="h-2 w-2 rounded-full transition"
:class="bp[row.key].value ? 'bg-(--accent)' : 'bg-(--border-strong)'"
/>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex justify-between">
<span class="text-(--fg-muted)">current()</span>
<span>[{{ current.length ? current.join(', ') : '—' }}]</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
Resize your browser window the matched breakpoints update live.
</p>
</div>
</template>
@@ -0,0 +1,73 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useClipboard } from './index';
const { text, copied, copyPending, isSupported, copy } = useClipboard({ copiedDuring: 1500 });
const draft = ref('npm install @robonen/toolkit');
const snippets = [
'git switch -c feature/clipboard',
'sk-live-9f2a4c7e1b8d6033',
'https://robonen.dev/docs/useClipboard',
];
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Clipboard API</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isSupported
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-red-500/30 bg-red-500/10 text-red-600 dark:text-red-400'"
>
{{ isSupported ? 'Supported' : 'Not supported' }}
</span>
</div>
<template v-if="isSupported">
<div class="flex flex-col gap-2">
<input
v-model="draft"
type="text"
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)"
placeholder="Type something to copy…"
>
<button
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="copyPending || !draft"
@click="copy(draft)"
>
{{ copyPending ? 'Copying…' : copied ? 'Copied!' : 'Copy to clipboard' }}
</button>
</div>
<div class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Quick copy</span>
<button
v-for="snippet in snippets"
:key="snippet"
class="inline-flex items-center justify-between gap-2 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2 text-left text-sm font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.99] cursor-pointer"
@click="copy(snippet)"
>
<span class="truncate font-mono text-xs text-(--fg-muted)">{{ snippet }}</span>
<span class="shrink-0 text-xs text-(--fg-subtle)">Copy</span>
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Last copied</span>
<p class="mt-1 break-all font-mono text-sm text-(--fg)">{{ text || '—' }}</p>
</div>
</template>
<div
v-else
class="rounded-lg border border-amber-500/30 bg-amber-500/10 p-3 text-sm text-amber-600 dark:text-amber-400"
>
The Clipboard API is not available in this browser.
</div>
</div>
</template>
@@ -0,0 +1,104 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useClipboardItems } from './index';
const errorMessage = ref('');
const { content, copied, copyPending, isSupported, copy, read } = useClipboardItems({
onError: (error) => {
errorMessage.value = error instanceof Error ? error.message : String(error);
},
});
const plain = 'Ada Lovelace — first computer programmer';
const html = '<strong>Ada Lovelace</strong> — <em>first computer programmer</em>';
function copyRich(): void {
errorMessage.value = '';
copy([
new ClipboardItem({
'text/plain': new Blob([plain], { type: 'text/plain' }),
'text/html': new Blob([html], { type: 'text/html' }),
}),
]);
}
async function readClipboard(): Promise<void> {
errorMessage.value = '';
await read();
}
function typesOf(item: ClipboardItem): string {
return item.types.join(', ');
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">ClipboardItem API</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isSupported
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-red-500/30 bg-red-500/10 text-red-600 dark:text-red-400'"
>
{{ isSupported ? 'Supported' : 'Not supported' }}
</span>
</div>
<template v-if="isSupported">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Rich payload</span>
<p class="mt-1 text-sm text-(--fg)" v-html="html" />
<p class="mt-1 font-mono text-xs text-(--fg-subtle)">text/plain &middot; text/html</p>
</div>
<div class="flex gap-2">
<button
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"
:disabled="copyPending"
@click="copyRich"
>
{{ copyPending ? 'Copying…' : copied ? 'Copied!' : 'Copy rich content' }}
</button>
<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="readClipboard"
>
Read clipboard
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
content ({{ content.length }} {{ content.length === 1 ? 'item' : 'items' }})
</span>
<ul v-if="content.length" class="mt-2 flex flex-col gap-1">
<li
v-for="(item, i) in content"
:key="i"
class="font-mono text-xs text-(--fg)"
>
#{{ i + 1 }}: {{ typesOf(item) }}
</li>
</ul>
<p v-else class="mt-2 font-mono text-xs text-(--fg-subtle)">No items read yet</p>
</div>
<div
v-if="errorMessage"
class="rounded-lg border border-red-500/30 bg-red-500/10 p-3 text-xs text-red-600 dark:text-red-400"
>
{{ errorMessage }}
</div>
</template>
<div
v-else
class="rounded-lg border border-amber-500/30 bg-amber-500/10 p-3 text-sm text-amber-600 dark:text-amber-400"
>
The async ClipboardItem API is not available in this browser.
</div>
</div>
</template>
@@ -0,0 +1,86 @@
<script setup lang="ts">
import { onMounted, ref } from 'vue';
import { useCloseWatcher } from './index';
const { isSupported, onClose, close } = useCloseWatcher();
const open = ref(false);
const lastClosedAt = ref<string | null>(null);
const closeCount = ref(0);
onMounted(() => {
onClose(() => {
if (!open.value)
return;
open.value = false;
closeCount.value++;
lastClosedAt.value = new Date().toLocaleTimeString();
});
});
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">CloseWatcher API</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isSupported
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'"
>
{{ isSupported ? 'Native' : 'Esc fallback' }}
</span>
</div>
<button
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 disabled:cursor-not-allowed disabled:opacity-40"
:disabled="open"
@click="open = true"
>
Open dialog
</button>
<Transition
enter-active-class="transition duration-150 ease-out"
enter-from-class="opacity-0 translate-y-1"
leave-active-class="transition duration-100 ease-in"
leave-to-class="opacity-0 translate-y-1"
>
<div v-if="open" class="rounded-xl border border-(--border-strong) bg-(--bg-elevated) p-4 shadow-lg">
<div class="flex items-start justify-between gap-3">
<div>
<p class="text-sm font-semibold text-(--fg)">Unsaved changes</p>
<p class="mt-1 text-sm text-(--fg-muted)">
Press <kbd class="rounded border border-(--border) bg-(--bg-inset) px-1.5 py-0.5 font-mono text-xs text-(--fg)">Esc</kbd>
(or the Android back gesture) to dismiss.
</p>
</div>
</div>
<div class="mt-4 flex justify-end gap-2">
<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="close()"
>
Dismiss via close()
</button>
</div>
</div>
</Transition>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex justify-between">
<span class="text-(--fg-muted)">closes</span>
<span class="font-bold">{{ closeCount }}</span>
</div>
<div class="mt-1 flex justify-between">
<span class="text-(--fg-muted)">last</span>
<span>{{ lastClosedAt ?? '—' }}</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
Open the dialog, then dismiss it with Esc, the system back gesture, or the programmatic <code class="font-mono">close()</code> call.
</p>
</div>
</template>
@@ -0,0 +1,81 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useColorMode } from './index';
// Scope the applied class/attribute to the demo card so it does not
// fight the docs site's own theme. `emitAuto` keeps the tri-state value.
const target = ref<HTMLElement>();
const mode = useColorMode({
selector: target,
attribute: 'data-demo-theme',
storageKey: null,
emitAuto: true,
modes: {
auto: '',
light: 'light',
dark: 'dark',
sepia: 'sepia',
},
});
const options = [
{ value: 'auto', label: 'Auto', icon: '◐' },
{ value: 'light', label: 'Light', icon: '☀' },
{ value: 'dark', label: 'Dark', icon: '☾' },
{ value: 'sepia', label: 'Sepia', icon: '✦' },
] as const;
</script>
<template>
<div
ref="target"
class="flex w-full max-w-sm flex-col gap-4"
>
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Color mode</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)">
system: {{ mode.system.value }}
</span>
</div>
<div class="grid grid-cols-4 gap-2">
<button
v-for="opt in options"
:key="opt.value"
type="button"
class="inline-flex flex-col items-center justify-center gap-1 rounded-lg border px-2 py-3 text-xs font-medium transition active:scale-[0.98] cursor-pointer"
:class="mode === opt.value
? 'border-transparent bg-(--accent) text-(--accent-fg)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="mode = opt.value"
>
<span class="text-base leading-none">{{ opt.icon }}</span>
{{ opt.label }}
</button>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<p class="mb-3 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Reactive state</p>
<dl class="space-y-2 text-sm">
<div class="flex items-center justify-between">
<dt class="text-(--fg-muted)">selected (emitAuto)</dt>
<dd class="font-mono tabular-nums text-(--fg)">{{ mode }}</dd>
</div>
<div class="flex items-center justify-between">
<dt class="text-(--fg-muted)">resolved state</dt>
<dd class="font-mono tabular-nums text-(--fg)">{{ mode.state.value }}</dd>
</div>
<div class="flex items-center justify-between">
<dt class="text-(--fg-muted)">store</dt>
<dd class="font-mono tabular-nums text-(--fg)">{{ mode.store.value }}</dd>
</div>
</dl>
</div>
<p class="text-xs text-(--fg-subtle)">
The chosen mode is applied as <code class="font-mono text-(--fg-muted)">data-demo-theme</code> on this card.
Pick "Auto" to follow your OS preference.
</p>
</div>
</template>
@@ -0,0 +1,96 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useCssVar } from './index';
const target = ref<HTMLElement>();
// Read/write live CSS custom properties on the preview box.
const hue = useCssVar('--demo-hue', target, { initialValue: '210' });
const radius = useCssVar('--demo-radius', target, { initialValue: '16' });
const size = useCssVar('--demo-size', target, { initialValue: '96' });
const swatches = ['12', '90', '150', '210', '270', '330'];
const accent = computed(() => `hsl(${hue.value} 80% 55%)`);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
ref="target"
class="flex items-center justify-center rounded-xl border border-(--border) bg-(--bg-inset) p-6"
>
<div
class="shadow-lg transition-all duration-300 ease-out"
:style="{
width: 'calc(var(--demo-size) * 1px)',
height: 'calc(var(--demo-size) * 1px)',
borderRadius: 'calc(var(--demo-radius) * 1px)',
background: 'hsl(var(--demo-hue) 80% 55%)',
}"
/>
</div>
<div class="flex flex-col gap-4 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="hue">Hue</label>
<span class="font-mono text-sm tabular-nums text-(--fg)">--demo-hue: {{ hue }}</span>
</div>
<input
id="hue"
v-model="hue"
type="range"
min="0"
max="360"
class="w-full accent-(--accent) cursor-pointer"
>
<div class="flex gap-1.5">
<button
v-for="s in swatches"
:key="s"
type="button"
class="h-6 w-6 rounded-md border border-(--border) transition hover:scale-110 active:scale-95 cursor-pointer"
:style="{ background: `hsl(${s} 80% 55%)` }"
:aria-label="`Set hue ${s}`"
@click="hue = s"
/>
</div>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="radius">Radius</label>
<span class="font-mono text-sm tabular-nums text-(--fg)">--demo-radius: {{ radius }}</span>
</div>
<input
id="radius"
v-model="radius"
type="range"
min="0"
max="48"
class="w-full accent-(--accent) cursor-pointer"
>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="size">Size</label>
<span class="font-mono text-sm tabular-nums text-(--fg)">--demo-size: {{ size }}</span>
</div>
<input
id="size"
v-model="size"
type="range"
min="48"
max="140"
class="w-full accent-(--accent) cursor-pointer"
>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
background: {{ accent }};
</div>
</div>
</template>
@@ -0,0 +1,74 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useDark } from './index';
const target = ref<HTMLElement>();
// Scope the toggle to the demo card via a data attribute so it does not
// override the docs site's own theme. `storageKey: null` keeps it in memory.
const isDark = useDark({
selector: target,
attribute: 'data-demo-mode',
valueDark: 'dark',
valueLight: 'light',
storageKey: null,
});
function toggle() {
isDark.value = !isDark.value;
}
</script>
<template>
<div
ref="target"
data-demo-mode
class="flex w-full max-w-sm flex-col gap-4"
>
<div class="flex items-center justify-between rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center gap-3">
<span
class="flex h-10 w-10 items-center justify-center rounded-lg text-lg transition-colors"
:class="isDark
? 'bg-indigo-500/15 text-indigo-400'
: 'bg-amber-500/15 text-amber-600 dark:text-amber-400'"
>
{{ isDark ? '☾' : '☀' }}
</span>
<div>
<p class="text-sm font-medium text-(--fg)">{{ isDark ? 'Dark mode' : 'Light mode' }}</p>
<p class="text-xs text-(--fg-subtle)">isDark = {{ isDark }}</p>
</div>
</div>
<button
type="button"
role="switch"
:aria-checked="isDark"
class="relative inline-flex h-7 w-12 items-center rounded-full border border-(--border) transition focus:outline-none focus:ring-2 focus:ring-(--ring) cursor-pointer"
:class="isDark ? 'bg-(--accent)' : 'bg-(--bg-inset)'"
@click="toggle"
>
<span
class="inline-block h-5 w-5 transform rounded-full bg-(--bg) shadow transition-transform"
:class="isDark ? 'translate-x-6' : 'translate-x-1'"
/>
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<p class="mb-2 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Preview surface</p>
<div class="flex items-center gap-2">
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">
data-demo-mode = "{{ isDark ? 'dark' : 'light' }}"
</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
Writing the boolean toggles the attribute on this card. When the requested state
matches your OS preference, <code class="font-mono text-(--fg-muted)">useDark</code>
falls back to <code class="font-mono text-(--fg-muted)">auto</code> to keep tracking it.
</p>
</div>
</template>
@@ -0,0 +1,127 @@
<script setup lang="ts">
import { onMounted, onUnmounted, ref, watch } from 'vue';
import { useDocumentPiP } from './index';
const { isSupported, isOpen, error, open, close } = useDocumentPiP();
// A live element we move into (and back out of) the PiP window.
const player = ref<HTMLElement>();
const host = ref<HTMLElement>();
const elapsed = ref(0);
let timer: ReturnType<typeof setInterval> | undefined;
onMounted(() => {
timer = setInterval(() => {
elapsed.value += 1;
}, 1000);
});
onUnmounted(() => {
if (timer)
clearInterval(timer);
});
async function popOut() {
const win = await open({ width: 320, height: 180 });
if (win && player.value) {
// Carry over the document styles so the moved DOM keeps its look.
for (const sheet of Array.from(document.styleSheets)) {
try {
const css = Array.from(sheet.cssRules).map(r => r.cssText).join('');
const style = win.document.createElement('style');
style.textContent = css;
win.document.head.append(style);
}
catch {
// Cross-origin stylesheet — skip.
}
}
win.document.body.style.margin = '0';
win.document.body.append(player.value);
}
}
// When the PiP window closes, pull the element back into the page.
watch(isOpen, (openNow) => {
if (!openNow && player.value && host.value)
host.value.append(player.value);
});
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-700 dark:text-amber-400"
>
Document Picture-in-Picture is not supported in this browser.
</div>
<template v-else>
<div
ref="host"
class="min-h-[7rem] rounded-xl border border-(--border) bg-(--bg-inset) p-1"
>
<div
ref="player"
class="flex h-full flex-col items-center justify-center gap-1 rounded-lg bg-(--bg-elevated) p-6"
>
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Live timer</span>
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ String(Math.floor(elapsed / 60)).padStart(2, '0') }}:{{ String(elapsed % 60).padStart(2, '0') }}
</span>
</div>
</div>
<div class="flex items-center gap-2">
<button
type="button"
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"
:disabled="isOpen"
@click="popOut"
>
Pop out
</button>
<button
type="button"
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"
:disabled="!isOpen"
@click="close"
>
Close window
</button>
</div>
<div class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-sm">
<span class="text-(--fg-muted)">isOpen</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isOpen
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg) text-(--fg-muted)'"
>
<span
class="h-1.5 w-1.5 rounded-full"
:class="isOpen ? 'bg-emerald-500' : 'bg-(--fg-subtle)'"
/>
{{ isOpen ? 'floating' : 'docked' }}
</span>
</div>
<p
v-if="error"
class="text-xs text-red-600 dark:text-red-400"
>
{{ String(error) }}
</p>
<p
v-else
class="text-xs text-(--fg-subtle)"
>
"Pop out" moves the live timer into an always-on-top window. Closing it returns the element to the page.
</p>
</template>
</div>
</template>
@@ -0,0 +1,111 @@
<script setup lang="ts">
import { ref, shallowRef } from 'vue';
import { useEventListener } from './index';
// 1. Element target via template ref — track pointer position over the pad.
const pad = ref<HTMLElement>();
const pos = ref({ x: 0, y: 0 });
const inside = ref(false);
useEventListener(pad, 'pointermove', (e: PointerEvent) => {
const rect = pad.value?.getBoundingClientRect();
if (!rect)
return;
pos.value = {
x: Math.round(e.clientX - rect.left),
y: Math.round(e.clientY - rect.top),
};
});
useEventListener(pad, 'pointerenter', () => (inside.value = true));
useEventListener(pad, 'pointerleave', () => (inside.value = false));
// 2. Global window target with a stoppable listener — capture last key.
const lastKey = shallowRef<string>('');
const keyCount = ref(0);
const listening = ref(true);
const stop = useEventListener('keydown', (e: KeyboardEvent) => {
lastKey.value = e.key === ' ' ? 'Space' : e.key;
keyCount.value += 1;
});
function toggleListening() {
if (listening.value) {
stop();
listening.value = false;
}
else {
// Re-arm by registering a fresh listener.
useEventListener('keydown', (e: KeyboardEvent) => {
lastKey.value = e.key === ' ' ? 'Space' : e.key;
keyCount.value += 1;
});
listening.value = true;
}
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">pointermove on element</span>
<div
ref="pad"
class="relative h-32 overflow-hidden rounded-xl border border-(--border) bg-(--bg-inset) touch-none"
>
<div
class="pointer-events-none absolute h-5 w-5 -translate-x-1/2 -translate-y-1/2 rounded-full bg-(--accent) transition-opacity"
:class="inside ? 'opacity-100' : 'opacity-0'"
:style="{ left: `${pos.x}px`, top: `${pos.y}px` }"
/>
<div class="pointer-events-none absolute inset-0 flex items-center justify-center">
<span class="text-xs text-(--fg-subtle)">{{ inside ? '' : 'Hover here' }}</span>
</div>
<div class="pointer-events-none absolute bottom-2 left-2 rounded-md border border-(--border) bg-(--bg) px-2 py-0.5 font-mono text-xs tabular-nums text-(--fg-muted)">
x: {{ pos.x }} · y: {{ pos.y }}
</div>
</div>
</div>
<div class="flex flex-col gap-2 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">keydown on window</span>
<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-xs font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="toggleListening"
>
{{ listening ? 'Stop listening' : 'Start listening' }}
</button>
</div>
<div class="flex items-center gap-3">
<kbd
class="flex min-w-[3.5rem] items-center justify-center rounded-lg border border-(--border-strong) bg-(--bg-inset) px-3 py-2 font-mono text-sm font-medium text-(--fg)"
>
{{ lastKey || '—' }}
</kbd>
<div class="flex flex-col">
<span class="text-xs text-(--fg-subtle)">presses captured</span>
<span class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ keyCount }}</span>
</div>
<span
class="ml-auto inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="listening
? '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="listening ? 'bg-emerald-500 animate-pulse' : 'bg-(--fg-subtle)'"
/>
{{ listening ? 'active' : 'stopped' }}
</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
Listeners auto-detach on unmount. The returned stop function lets you detach early press any key, then toggle listening.
</p>
</div>
</template>
@@ -0,0 +1,80 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useEyeDropper } from './index';
const { isSupported, sRGBHex, open } = useEyeDropper({ initialValue: '#6366f1' });
const history = ref<string[]>([]);
const error = ref('');
const hex = computed(() => sRGBHex.value || '#000000');
function relativeLuminance(color: string): number {
const value = color.replace('#', '');
const r = Number.parseInt(value.slice(0, 2), 16) / 255;
const g = Number.parseInt(value.slice(2, 4), 16) / 255;
const b = Number.parseInt(value.slice(4, 6), 16) / 255;
const lin = (c: number) => (c <= 0.03928 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4);
return 0.2126 * lin(r) + 0.7152 * lin(g) + 0.0722 * lin(b);
}
const readableText = computed(() => (relativeLuminance(hex.value) > 0.5 ? '#000000' : '#ffffff'));
async function pick() {
error.value = '';
try {
const result = await open();
if (result && !history.value.includes(result.sRGBHex))
history.value = [result.sRGBHex, ...history.value].slice(0, 6);
}
catch {
error.value = 'Selection cancelled';
}
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-center text-sm text-amber-600 dark:text-amber-400"
>
The EyeDropper API is not supported in this browser.
</div>
<template v-else>
<div
class="flex h-32 items-center justify-center rounded-xl border border-(--border) transition-colors duration-300"
:style="{ backgroundColor: hex, color: readableText }"
>
<span class="font-mono text-2xl font-bold tabular-nums">{{ hex }}</span>
</div>
<button 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" @click="pick">
<svg class="size-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<path d="m2 22 1-1h3l9-9" /><path d="M3 21v-3l9-9" /><path d="m15 6 3.4-3.4a2.1 2.1 0 1 1 3 3L21 6l3 3-3 3-3-3-9 9" />
</svg>
Pick a color from screen
</button>
<p v-if="error" class="text-center text-xs text-(--fg-subtle)">
{{ error }}
</p>
<div v-if="history.length" class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Recent</span>
<div class="flex flex-wrap gap-2">
<button
v-for="color in history"
:key="color"
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) transition hover:border-(--border-strong) cursor-pointer"
@click="sRGBHex = color"
>
<span class="size-3 rounded-full border border-(--border)" :style="{ backgroundColor: color }" />
{{ color }}
</button>
</div>
</div>
</template>
</div>
</template>
@@ -0,0 +1,74 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useFavicon } from './index';
interface Preset {
label: string;
href: string;
emoji: string;
}
// Tiny inline SVG data-URIs so the demo needs no network/assets.
function emojiFavicon(emoji: string): string {
const svg = `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y=".9em" font-size="90">${emoji}</text></svg>`;
return `data:image/svg+xml,${encodeURIComponent(svg)}`;
}
const presets: Preset[] = [
{ label: 'Rocket', emoji: '🚀', href: emojiFavicon('🚀') },
{ label: 'Fire', emoji: '🔥', href: emojiFavicon('🔥') },
{ label: 'Heart', emoji: '💜', href: emojiFavicon('💜') },
{ label: 'Star', emoji: '⭐', href: emojiFavicon('⭐') },
];
const favicon = useFavicon(presets[0].href);
const active = ref(presets[0].label);
function select(preset: Preset) {
active.value = preset.label;
favicon.value = preset.href;
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center gap-2 rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2">
<div class="flex gap-1.5">
<span class="size-2.5 rounded-full bg-red-500/70" />
<span class="size-2.5 rounded-full bg-amber-500/70" />
<span class="size-2.5 rounded-full bg-emerald-500/70" />
</div>
<div class="ml-2 flex flex-1 items-center gap-2 rounded-md bg-(--bg) px-2 py-1">
<span class="text-base leading-none">{{ presets.find(p => p.label === active)?.emoji }}</span>
<span class="truncate text-xs text-(--fg-muted)">My Awesome App</span>
</div>
</div>
<p class="mt-2 text-center text-xs text-(--fg-subtle)">
Look at the real browser tab its favicon updates live.
</p>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Choose a favicon</span>
<div class="grid grid-cols-2 gap-2">
<button
v-for="preset in presets"
:key="preset.label"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="active === preset.label
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="select(preset)"
>
<span class="text-base leading-none">{{ preset.emoji }}</span>
{{ preset.label }}
</button>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-xs text-(--fg) break-all">
favicon.value = "{{ presets.find(p => p.label === active)?.emoji }} svg"
</div>
</div>
</template>
@@ -0,0 +1,90 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useFileDialog } from './index';
const { files, open, reset, onChange, onCancel } = useFileDialog({
accept: 'image/*',
multiple: true,
});
const status = ref('Idle');
const multiple = ref(true);
const selected = computed(() => (files.value ? Array.from(files.value) : []));
const totalBytes = computed(() => selected.value.reduce((sum, file) => sum + file.size, 0));
function formatBytes(bytes: number): string {
if (bytes === 0)
return '0 B';
const units = ['B', 'KB', 'MB', 'GB'];
const index = Math.floor(Math.log(bytes) / Math.log(1024));
return `${(bytes / 1024 ** index).toFixed(1)} ${units[index]}`;
}
onChange((list) => {
status.value = list && list.length ? `Selected ${list.length} file(s)` : 'Cleared';
});
onCancel(() => {
status.value = 'Dialog dismissed';
});
function pick() {
open({ multiple: multiple.value });
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex items-center justify-between gap-3">
<label class="inline-flex cursor-pointer items-center gap-2 text-sm text-(--fg-muted)">
<input v-model="multiple" type="checkbox" class="size-4 rounded border-(--border) accent-(--accent)">
Allow multiple
</label>
<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)">
{{ status }}
</span>
</div>
<div class="flex gap-2">
<button 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" @click="pick">
<svg class="size-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" /><polyline points="17 8 12 3 7 8" /><line x1="12" y1="3" x2="12" y2="15" />
</svg>
Choose images
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!selected.length"
@click="reset"
>
Clear
</button>
</div>
<div
v-if="!selected.length"
class="flex flex-col items-center justify-center gap-1 rounded-xl border border-dashed border-(--border) bg-(--bg-inset) p-6 text-center"
>
<span class="text-sm text-(--fg-muted)">No files selected</span>
<span class="text-xs text-(--fg-subtle)">Click Choose images to open the native dialog</span>
</div>
<div v-else class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">{{ selected.length }} file(s)</span>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ formatBytes(totalBytes) }} total</span>
</div>
<ul class="flex max-h-44 flex-col gap-1.5 overflow-auto">
<li
v-for="file in selected"
:key="file.name + file.lastModified"
class="flex items-center justify-between gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2"
>
<span class="truncate text-sm text-(--fg)">{{ file.name }}</span>
<span class="shrink-0 font-mono text-xs tabular-nums text-(--fg-subtle)">{{ formatBytes(file.size) }}</span>
</li>
</ul>
</div>
</div>
</template>
@@ -0,0 +1,108 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useFileSystemAccess } from './index';
const lastError = ref('');
const {
isSupported,
data,
fileName,
fileMIME,
fileSize,
open,
create,
save,
saveAs,
} = useFileSystemAccess({
dataType: 'Text',
types: [{ description: 'Text files', accept: { 'text/plain': ['.txt', '.md'] } }],
onError: (error) => {
lastError.value = error instanceof Error && error.name === 'AbortError'
? 'Cancelled'
: 'Something went wrong';
},
});
// Writable string proxy so the textarea can v-model the (union-typed) data ref.
const text = computed({
get: () => (typeof data.value === 'string' ? data.value : ''),
set: (value: string) => { data.value = value; },
});
function formatBytes(bytes: number): string {
if (bytes === 0)
return '0 B';
const units = ['B', 'KB', 'MB'];
const index = Math.floor(Math.log(bytes) / Math.log(1024));
return `${(bytes / 1024 ** index).toFixed(1)} ${units[index]}`;
}
async function newFile() {
lastError.value = '';
await create({ suggestedName: 'untitled.txt' });
if (typeof data.value !== 'string')
data.value = 'Hello from the File System Access API!\n';
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-center text-sm text-amber-600 dark:text-amber-400"
>
The File System Access API is not supported in this browser. Try Chrome or Edge.
</div>
<template v-else>
<div class="flex flex-wrap gap-2">
<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="open()">
Open
</button>
<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="newFile">
New
</button>
<button 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100" :disabled="data === undefined" @click="save()">
Save
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100" :disabled="data === undefined" @click="saveAs()">
Save As
</button>
</div>
<div v-if="fileName" class="flex flex-wrap items-center gap-2">
<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)">
{{ fileName }}
</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)">
{{ fileMIME || 'text/plain' }}
</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-mono tabular-nums text-(--fg-muted)">
{{ formatBytes(fileSize) }}
</span>
</div>
<textarea
v-if="data !== undefined"
v-model="text"
rows="6"
spellcheck="false"
class="w-full resize-none rounded-lg border border-(--border) bg-(--bg) px-3 py-2 font-mono text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
placeholder="File contents…"
/>
<div
v-else
class="flex flex-col items-center justify-center gap-1 rounded-xl border border-dashed border-(--border) bg-(--bg-inset) p-6 text-center"
>
<span class="text-sm text-(--fg-muted)">No file open</span>
<span class="text-xs text-(--fg-subtle)">Open an existing file or create a new one, edit it, then save back to disk.</span>
</div>
<p v-if="lastError" class="text-center text-xs text-(--fg-subtle)">
{{ lastError }}
</p>
</template>
</div>
</template>
@@ -1,46 +0,0 @@
<script setup lang="ts">import { useFps } from './index';
const { fps, min, max, isActive, reset, toggle } = useFps({ every: 10 });
</script>
<template>
<div class="space-y-4">
<div class="flex items-end gap-8">
<div>
<div class="text-4xl font-mono font-bold tabular-nums text-(--color-text)">{{ fps }}</div>
<div class="text-xs text-(--color-text-mute) mt-1">FPS</div>
</div>
<div>
<div class="text-xl font-mono tabular-nums text-(--color-text-soft)">{{ min === Infinity ? '—' : min }}</div>
<div class="text-xs text-(--color-text-mute) mt-1">Min</div>
</div>
<div>
<div class="text-xl font-mono tabular-nums text-(--color-text-soft)">{{ max || '—' }}</div>
<div class="text-xs text-(--color-text-mute) mt-1">Max</div>
</div>
</div>
<div class="h-2 rounded-full border border-(--color-border) overflow-hidden">
<div
class="h-full rounded-full transition-all duration-300"
:class="fps >= 50 ? 'bg-emerald-500' : fps >= 30 ? 'bg-amber-500' : 'bg-red-500'"
:style="{ width: `${Math.min(fps / 60 * 100, 100)}%` }"
/>
</div>
<div class="flex items-center gap-2">
<button
class="px-3 py-1.5 text-sm rounded-md border border-(--color-border) bg-(--color-bg) hover:bg-(--color-bg-mute) text-(--color-text-soft) transition-colors cursor-pointer"
@click="toggle"
>
{{ isActive ? 'Pause' : 'Resume' }}
</button>
<button
class="px-3 py-1.5 text-sm rounded-md border border-(--color-border) bg-(--color-bg) hover:bg-(--color-bg-mute) text-(--color-text-soft) transition-colors cursor-pointer"
@click="reset"
>
Reset
</button>
</div>
</div>
</template>
@@ -0,0 +1,73 @@
<script setup lang="ts">
import { useTemplateRef } from 'vue';
import { useFullscreen } from './index';
const target = useTemplateRef<HTMLElement>('target');
const { isSupported, isFullscreen, enter, exit, toggle } = useFullscreen(target);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-center text-sm text-amber-600 dark:text-amber-400"
>
The Fullscreen API is not supported in this browser.
</div>
<div
ref="target"
class="relative flex h-44 flex-col items-center justify-center gap-3 overflow-hidden rounded-xl border border-(--border) bg-(--bg-elevated) transition-colors"
:class="isFullscreen && 'bg-(--bg-inset)'"
>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isFullscreen
? '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="size-1.5 rounded-full" :class="isFullscreen ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ isFullscreen ? 'Fullscreen' : 'Windowed' }}
</span>
<p class="px-6 text-center text-sm text-(--fg-muted)">
This panel becomes the fullscreen target. Press
<kbd class="rounded border border-(--border) bg-(--bg) px-1.5 py-0.5 font-mono text-xs text-(--fg)">Esc</kbd>
to leave.
</p>
<button
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!isSupported"
@click="toggle"
>
<svg class="size-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<template v-if="isFullscreen">
<path d="M8 3v3a2 2 0 0 1-2 2H3" /><path d="M21 8h-3a2 2 0 0 1-2-2V3" /><path d="M3 16h3a2 2 0 0 1 2 2v3" /><path d="M16 21v-3a2 2 0 0 1 2-2h3" />
</template>
<template v-else>
<path d="M8 3H5a2 2 0 0 0-2 2v3" /><path d="M21 8V5a2 2 0 0 0-2-2h-3" /><path d="M3 16v3a2 2 0 0 0 2 2h3" /><path d="M16 21h3a2 2 0 0 0 2-2v-3" />
</template>
</svg>
{{ isFullscreen ? 'Exit fullscreen' : 'Enter fullscreen' }}
</button>
</div>
<div class="flex gap-2">
<button
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"
:disabled="!isSupported || isFullscreen"
@click="enter"
>
Enter
</button>
<button
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"
:disabled="!isSupported || !isFullscreen"
@click="exit"
>
Exit
</button>
</div>
</div>
</template>
@@ -0,0 +1,102 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useImage } from './index';
const samples = [
{ label: 'Mountains', src: 'https://picsum.photos/id/1018/640/400' },
{ label: 'Forest', src: 'https://picsum.photos/id/1015/640/400' },
{ label: 'Broken URL', src: 'https://picsum.photos/this-image-does-not-exist.jpg' },
];
const current = ref(0);
const src = computed(() => samples[current.value]!.src);
// Reactive getter source: useImage reloads whenever `src` changes.
const { isLoading, isReady, error, state, execute } = useImage(
() => ({ src: src.value, alt: samples[current.value]!.label }),
);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex flex-wrap gap-2">
<button
v-for="(sample, index) in samples"
:key="sample.src"
type="button"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="current === index
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="current = index"
>
{{ sample.label }}
</button>
</div>
<div class="relative aspect-[8/5] w-full overflow-hidden rounded-xl border border-(--border) bg-(--bg-inset)">
<Transition
enter-active-class="transition duration-300"
enter-from-class="opacity-0 scale-[1.02]"
leave-active-class="transition duration-200"
leave-to-class="opacity-0"
>
<img
v-if="isReady && state"
:key="src"
:src="state.src"
:alt="state.alt"
class="h-full w-full object-cover"
>
<div
v-else-if="error"
class="absolute inset-0 flex flex-col items-center justify-center gap-2 p-4 text-center"
>
<span class="text-2xl"></span>
<p class="text-sm font-medium text-red-600 dark:text-red-400">
Failed to load image
</p>
</div>
<div
v-else
class="absolute inset-0 flex flex-col items-center justify-center gap-3"
>
<span class="h-7 w-7 animate-spin rounded-full border-2 border-(--border-strong) border-t-(--accent)" />
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Loading
</p>
</div>
</Transition>
</div>
<div class="flex items-center justify-between gap-3">
<div class="flex items-center gap-2">
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isLoading
? 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'
: isReady
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-red-500/30 bg-red-500/10 text-red-600 dark:text-red-400'"
>
{{ isLoading ? 'loading' : isReady ? 'ready' : 'error' }}
</span>
<span
v-if="isReady && state"
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) tabular-nums"
>
{{ state.naturalWidth }}×{{ state.naturalHeight }}
</span>
</div>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="isLoading"
@click="execute()"
>
Reload
</button>
</div>
</div>
</template>
@@ -0,0 +1,115 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useLocalFonts } from './index';
const { isSupported, fonts, error, query } = useLocalFonts();
const loading = ref(false);
const filter = ref('');
async function pickFonts() {
loading.value = true;
try {
await query();
}
finally {
loading.value = false;
}
}
const filtered = computed(() => {
const term = filter.value.trim().toLowerCase();
if (!term)
return fonts.value;
return fonts.value.filter(font => font.fullName.toLowerCase().includes(term));
});
// Unique families for the summary readout.
const familyCount = computed(() => new Set(fonts.value.map(font => font.family)).size);
// Render each face in its own font (quotes kept out of the template attribute).
function familyStyle(name: string) {
return { fontFamily: `'${name}', sans-serif` };
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex items-center justify-between gap-3">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Local Font Access
</p>
<span
v-if="fonts.length"
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) tabular-nums"
>
{{ fonts.length }} faces · {{ familyCount }} families
</span>
</div>
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-700 dark:text-amber-300"
>
The Local Font Access API is not supported in this browser. Try a recent Chromium-based desktop browser.
</div>
<template v-else>
<button
type="button"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="loading"
@click="pickFonts"
>
{{ loading ? 'Requesting permission…' : fonts.length ? 'Re-query fonts' : 'Enumerate installed fonts' }}
</button>
<p
v-if="error"
class="rounded-lg border border-red-500/30 bg-red-500/10 px-3 py-2 text-sm text-red-600 dark:text-red-400"
>
Query failed permission was likely denied.
</p>
<template v-if="fonts.length">
<input
v-model="filter"
type="search"
placeholder="Filter by name…"
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)"
>
<ul class="max-h-56 divide-y divide-(--border) overflow-y-auto rounded-xl border border-(--border) bg-(--bg-elevated)">
<li
v-for="font in filtered"
:key="font.postscriptName"
class="flex items-baseline justify-between gap-3 px-3 py-2"
>
<span
class="truncate text-base text-(--fg)"
:style="familyStyle(font.fullName)"
>
{{ font.fullName }}
</span>
<span class="shrink-0 font-mono text-xs text-(--fg-subtle)">
{{ font.style }}
</span>
</li>
<li
v-if="!filtered.length"
class="px-3 py-6 text-center text-sm text-(--fg-subtle)"
>
No fonts match "{{ filter }}"
</li>
</ul>
</template>
<p
v-else-if="!error && !loading"
class="rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-6 text-center text-sm text-(--fg-subtle)"
>
Click above to grant the <code class="font-mono">local-fonts</code> permission and list your fonts.
</p>
</template>
</div>
</template>
@@ -0,0 +1,60 @@
<script setup lang="ts">
import { useMediaQuery } from './index';
// useMediaQuery returns a single ComputedRef<boolean> — bind it directly.
const isWide = useMediaQuery('(min-width: 1024px)');
const isMedium = useMediaQuery('(min-width: 640px)');
const prefersDark = useMediaQuery('(prefers-color-scheme: dark)');
const prefersReducedMotion = useMediaQuery('(prefers-reduced-motion: reduce)');
const isPortrait = useMediaQuery('(orientation: portrait)');
const isFinePointer = useMediaQuery('(pointer: fine)');
const breakpoint = isWide;
const queries = [
{ label: 'min-width: 1024px', match: isWide },
{ label: 'min-width: 640px', match: isMedium },
{ label: 'prefers-color-scheme: dark', match: prefersDark },
{ label: 'prefers-reduced-motion', match: prefersReducedMotion },
{ label: 'orientation: portrait', match: isPortrait },
{ label: 'pointer: fine', match: isFinePointer },
];
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 text-center">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Current layout
</p>
<p class="mt-1 font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ breakpoint ? 'desktop' : isMedium ? 'tablet' : 'mobile' }}
</p>
<p class="mt-1 text-sm text-(--fg-muted)">
Resize the window to watch these queries flip live.
</p>
</div>
<ul class="divide-y divide-(--border) rounded-xl border border-(--border) bg-(--bg-elevated)">
<li
v-for="query in queries"
:key="query.label"
class="flex items-center justify-between gap-3 px-3 py-2.5"
>
<code class="font-mono text-sm text-(--fg)">{{ query.label }}</code>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition"
:class="query.match.value
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-subtle)'"
>
<span
class="h-1.5 w-1.5 rounded-full"
:class="query.match.value ? 'bg-emerald-500' : 'bg-(--border-strong)'"
/>
{{ query.match.value ? 'matches' : 'no match' }}
</span>
</li>
</ul>
</div>
</template>
@@ -0,0 +1,111 @@
<script setup lang="ts">
import { computed, ref, shallowRef } from 'vue';
import { useObjectUrl } from './index';
const file = shallowRef<File>();
// useObjectUrl returns a single read-only ShallowRef<string | undefined>.
const url = useObjectUrl(file);
const isImage = computed(() => file.value?.type.startsWith('image/') ?? false);
const sizeLabel = computed(() => {
const bytes = file.value?.size ?? 0;
if (bytes < 1024)
return `${bytes} B`;
if (bytes < 1024 * 1024)
return `${(bytes / 1024).toFixed(1)} KB`;
return `${(bytes / (1024 * 1024)).toFixed(2)} MB`;
});
const dragging = ref(false);
function onFiles(list: FileList | null | undefined) {
if (list && list.length)
file.value = list[0];
}
function onDrop(event: DragEvent) {
dragging.value = false;
onFiles(event.dataTransfer?.files);
}
function clear() {
file.value = undefined;
}
// A synthetic blob so the demo works even without a file at hand.
function generateSample() {
const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="240" height="160">`
+ `<rect width="240" height="160" fill="#6366f1"/>`
+ `<text x="120" y="90" font-size="22" font-family="sans-serif" fill="white" text-anchor="middle">useObjectUrl</text>`
+ `</svg>`;
file.value = new File([svg], 'sample.svg', { type: 'image/svg+xml' });
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<label
class="flex cursor-pointer flex-col items-center justify-center gap-2 rounded-xl border-2 border-dashed p-6 text-center transition"
:class="dragging
? 'border-(--accent) bg-(--accent-subtle)'
: 'border-(--border) bg-(--bg-inset) hover:border-(--border-strong)'"
@dragover.prevent="dragging = true"
@dragleave.prevent="dragging = false"
@drop.prevent="onDrop"
>
<span class="text-2xl">📎</span>
<span class="text-sm font-medium text-(--fg)">Drop a file or click to choose</span>
<span class="text-xs text-(--fg-subtle)">An object URL is created instantly</span>
<input
type="file"
class="hidden"
@change="onFiles(($event.target as HTMLInputElement).files)"
>
</label>
<div class="flex gap-2">
<button
type="button"
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"
@click="generateSample"
>
Use sample image
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!file"
@click="clear"
>
Clear
</button>
</div>
<div
v-if="file"
class="flex flex-col gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4"
>
<img
v-if="isImage && url"
:src="url"
alt="Selected file preview"
class="mx-auto max-h-40 rounded-lg border border-(--border) object-contain"
>
<div class="flex items-center justify-between gap-3 text-sm">
<span class="truncate font-medium text-(--fg)">{{ file.name }}</span>
<span class="shrink-0 font-mono text-xs text-(--fg-muted) tabular-nums">{{ sizeLabel }}</span>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-xs text-(--fg) break-all">
{{ url }}
</div>
</div>
<p
v-else
class="rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-6 text-center text-sm text-(--fg-subtle)"
>
No source the URL ref is <code class="font-mono">undefined</code>
</p>
</div>
</template>
@@ -0,0 +1,101 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { usePermission } from './index';
import type { GeneralPermissionDescriptor } from './index';
const names: GeneralPermissionDescriptor['name'][] = [
'geolocation',
'camera',
'microphone',
'notifications',
'clipboard-read',
];
// usePermission takes a static descriptor, so instantiate one per permission
// up-front and switch which reactive state we read via the dropdown.
const permissions = names.map(name => ({
name,
...usePermission(name, { controls: true }),
}));
const selected = ref<GeneralPermissionDescriptor['name']>('geolocation');
const active = computed(() => permissions.find(perm => perm.name === selected.value)!);
const isSupported = active.value.isSupported;
const meta = computed(() => {
switch (active.value.state.value) {
case 'granted':
return { label: 'granted', dot: 'bg-emerald-500', text: 'text-emerald-600 dark:text-emerald-400', ring: 'border-emerald-500/30 bg-emerald-500/10' };
case 'denied':
return { label: 'denied', dot: 'bg-red-500', text: 'text-red-600 dark:text-red-400', ring: 'border-red-500/30 bg-red-500/10' };
case 'prompt':
return { label: 'prompt', dot: 'bg-amber-500', text: 'text-amber-600 dark:text-amber-400', ring: 'border-amber-500/30 bg-amber-500/10' };
default:
return { label: 'unknown', dot: 'bg-(--border-strong)', text: 'text-(--fg-subtle)', ring: 'border-(--border) bg-(--bg-inset)' };
}
});
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-700 dark:text-amber-300"
>
The Permissions API is not supported in this browser.
</div>
<template v-else>
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Permission
</label>
<select
v-model="selected"
class="w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
<option v-for="name in names" :key="name" :value="name">
{{ name }}
</option>
</select>
</div>
<ul class="divide-y divide-(--border) rounded-xl border border-(--border) bg-(--bg-elevated)">
<li
v-for="perm in permissions"
:key="perm.name"
class="flex items-center justify-between gap-3 px-3 py-2.5"
>
<code class="font-mono text-sm text-(--fg)">{{ perm.name }}</code>
<span class="font-mono text-xs text-(--fg-muted)">{{ perm.state.value ?? 'unknown' }}</span>
</li>
</ul>
<div class="flex flex-col items-center gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
{{ selected }}
</span>
<span
class="inline-flex items-center gap-2 rounded-md border px-3 py-1 text-sm font-semibold transition"
:class="[meta.ring, meta.text]"
>
<span class="h-2 w-2 rounded-full" :class="meta.dot" />
{{ meta.label }}
</span>
</div>
<button
type="button"
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"
@click="active.query()"
>
Re-check "{{ selected }}"
</button>
<p class="text-center text-xs text-(--fg-subtle)">
Status updates live if you change a permission in your browser settings.
</p>
</template>
</div>
</template>
@@ -0,0 +1,80 @@
<script setup lang="ts">
import { computed } from 'vue';
import { usePreferredColorScheme } from './index';
const scheme = usePreferredColorScheme();
const options = [
{ value: 'light', label: 'Light', icon: '☀️', hint: 'prefers-color-scheme: light' },
{ value: 'dark', label: 'Dark', icon: '🌙', hint: 'prefers-color-scheme: dark' },
{ value: 'no-preference', label: 'No preference', icon: '🌓', hint: 'no explicit preference' },
] as const;
const active = computed(() => options.find(o => o.value === scheme.value));
// A tiny live preview that flips its own palette based on the OS preference,
// independent of the docs site theme.
const previewClass = computed(() =>
scheme.value === 'dark'
? 'bg-zinc-900 text-zinc-100 border-zinc-700'
: 'bg-white text-zinc-900 border-zinc-200',
);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Preferred color scheme
</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)">
<span class="size-1.5 rounded-full bg-emerald-500" />
live
</span>
</div>
<ul class="flex flex-col gap-2">
<li
v-for="option in options"
:key="option.value"
class="flex items-center gap-3 rounded-lg border px-3 py-2.5 transition"
:class="scheme === option.value
? 'border-(--accent) bg-(--accent-subtle)'
: 'border-(--border) bg-(--bg-elevated)'"
>
<span class="text-lg leading-none">{{ option.icon }}</span>
<span class="flex flex-1 flex-col">
<span
class="text-sm font-medium"
:class="scheme === option.value ? 'text-(--accent-text)' : 'text-(--fg)'"
>
{{ option.label }}
</span>
<span class="font-mono text-xs text-(--fg-subtle)">{{ option.hint }}</span>
</span>
<span
v-if="scheme === option.value"
class="text-(--accent-text)"
aria-hidden="true"
></span>
</li>
</ul>
<div
class="flex items-center gap-3 rounded-xl border p-4 transition-colors"
:class="previewClass"
>
<span class="text-2xl">{{ active?.icon }}</span>
<div class="flex flex-col">
<span class="text-sm font-semibold">Self-themed preview</span>
<span class="text-xs opacity-70">
Resolved to <span class="font-mono">{{ scheme }}</span>
</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
Read-only: change your OS appearance setting to see this update instantly.
</p>
</div>
</template>
@@ -0,0 +1,73 @@
<script setup lang="ts">
import { computed } from 'vue';
import { usePreferredContrast } from './index';
const contrast = usePreferredContrast({ ssrContrast: 'no-preference' });
const levels = [
{ value: 'more', label: 'More', desc: 'Heavier borders, stronger separation', query: 'prefers-contrast: more' },
{ value: 'less', label: 'Less', desc: 'Softer, lower-contrast surfaces', query: 'prefers-contrast: less' },
{ value: 'custom', label: 'Custom', desc: 'A user-defined contrast scheme', query: 'prefers-contrast: custom' },
{ value: 'no-preference', label: 'No preference', desc: 'Default system contrast', query: 'prefers-contrast: no-preference' },
] as const;
const active = computed(() => levels.find(l => l.value === contrast.value));
// Demonstrate adapting UI intensity to the reported contrast level.
const cardClass = computed(() => {
switch (contrast.value) {
case 'more':
return 'border-(--border-strong) bg-(--bg-inset)';
case 'less':
return 'border-(--border) bg-(--bg-subtle) opacity-90';
default:
return 'border-(--border) bg-(--bg-elevated)';
}
});
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Preferred contrast
</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)">
{{ contrast }}
</span>
</div>
<div class="grid grid-cols-2 gap-2">
<div
v-for="level in levels"
:key="level.value"
class="flex flex-col gap-1 rounded-lg border px-3 py-2.5 transition"
:class="contrast === level.value
? 'border-(--accent) bg-(--accent-subtle)'
: 'border-(--border) bg-(--bg-elevated)'"
>
<span
class="text-sm font-medium"
:class="contrast === level.value ? 'text-(--accent-text)' : 'text-(--fg)'"
>
{{ level.label }}
</span>
<span class="text-xs leading-snug text-(--fg-muted)">{{ level.desc }}</span>
</div>
</div>
<div class="rounded-xl border p-4 transition-colors" :class="cardClass">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Adaptive surface
</span>
<p class="mt-1 text-sm text-(--fg)">
This card adjusts its borders and fill to match the
<span class="font-mono text-(--fg-muted)">{{ active?.query }}</span> level.
</p>
</div>
<p class="text-xs text-(--fg-subtle)">
Read-only: toggle your OS accessibility "increase / reduce contrast" setting to update.
</p>
</div>
</template>
@@ -0,0 +1,72 @@
<script setup lang="ts">
import { computed } from 'vue';
import { usePreferredDark } from './index';
const isDark = usePreferredDark();
const label = computed(() => (isDark.value ? 'Dark' : 'Light'));
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
prefers-color-scheme: dark
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition-colors"
:class="isDark
? 'border-indigo-500/30 bg-indigo-500/10 text-indigo-600 dark:text-indigo-300'
: 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'"
>
{{ isDark ? 'true' : 'false' }}
</span>
</div>
<!-- A miniature sky scene that flips between day and night. -->
<div
class="relative flex h-40 items-end overflow-hidden rounded-xl border border-(--border) p-4 transition-colors duration-500"
:class="isDark
? 'bg-gradient-to-b from-slate-900 to-slate-700'
: 'bg-gradient-to-b from-sky-300 to-sky-100'"
>
<!-- Sun / Moon -->
<div
class="absolute right-5 top-5 size-12 rounded-full transition-all duration-500"
:class="isDark
? 'bg-zinc-200 shadow-[0_0_28px_6px_rgba(228,228,231,0.4)]'
: 'bg-amber-300 shadow-[0_0_36px_10px_rgba(252,211,77,0.6)]'"
/>
<!-- Stars, only at night -->
<Transition
enter-active-class="transition-opacity duration-700"
enter-from-class="opacity-0"
leave-active-class="transition-opacity duration-300"
leave-to-class="opacity-0"
>
<div v-if="isDark" class="absolute inset-0">
<span class="absolute left-6 top-7 size-1 rounded-full bg-white" />
<span class="absolute left-20 top-12 size-0.5 rounded-full bg-white" />
<span class="absolute left-32 top-6 size-1 rounded-full bg-white" />
<span class="absolute left-12 top-16 size-0.5 rounded-full bg-white" />
<span class="absolute left-40 top-16 size-1 rounded-full bg-white" />
</div>
</Transition>
<span
class="relative z-10 text-2xl font-bold tabular-nums transition-colors duration-500"
:class="isDark ? 'text-zinc-100' : 'text-slate-800'"
>
{{ label }}
</span>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
const isDark = usePreferredDark()
<span class="text-(--fg-subtle)"> // </span>{{ isDark }}
</div>
<p class="text-xs text-(--fg-subtle)">
Read-only: switch your OS to dark/light mode to watch the scene change.
</p>
</div>
</template>
@@ -0,0 +1,83 @@
<script setup lang="ts">
import { computed } from 'vue';
import { usePreferredLanguages } from './index';
const languages = usePreferredLanguages();
// Resolve a human-friendly name + flag for each BCP-47 tag where possible.
const displayNames = computed(() => {
try {
return new Intl.DisplayNames(['en'], { type: 'language' });
}
catch {
return undefined;
}
});
function nameOf(tag: string): string {
return displayNames.value?.of(tag) ?? tag;
}
function flagOf(tag: string): string {
const region = tag.split('-')[1]?.toUpperCase();
if (!region || region.length !== 2)
return '🌐';
// Convert a 2-letter region code to a flag emoji.
return String.fromCodePoint(...[...region].map(c => 0x1F1E6 + c.charCodeAt(0) - 65));
}
const primary = computed(() => languages.value[0] ?? 'en');
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
navigator.languages
</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)">
{{ languages.length }} {{ languages.length === 1 ? 'locale' : 'locales' }}
</span>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Primary language
</span>
<div class="mt-1 flex items-center gap-2.5">
<span class="text-2xl leading-none">{{ flagOf(primary) }}</span>
<span class="flex flex-col">
<span class="text-base font-semibold text-(--fg)">{{ nameOf(primary) }}</span>
<span class="font-mono text-xs text-(--fg-subtle)">{{ primary }}</span>
</span>
</div>
</div>
<ol class="flex flex-col gap-2">
<li
v-for="(lang, index) in languages"
:key="`${lang}-${index}`"
class="flex items-center gap-3 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2"
>
<span class="w-5 text-center font-mono text-xs text-(--fg-subtle) tabular-nums">
{{ index + 1 }}
</span>
<span class="text-lg leading-none">{{ flagOf(lang) }}</span>
<span class="flex flex-1 flex-col">
<span class="text-sm font-medium text-(--fg)">{{ nameOf(lang) }}</span>
<span class="font-mono text-xs text-(--fg-subtle)">{{ lang }}</span>
</span>
<span
v-if="index === 0"
class="inline-flex items-center rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)"
>
preferred
</span>
</li>
</ol>
<p class="text-xs text-(--fg-subtle)">
Read-only: updates automatically on the browser's <span class="font-mono">languagechange</span> event.
</p>
</div>
</template>
@@ -0,0 +1,81 @@
<script setup lang="ts">
import { computed } from 'vue';
import { usePreferredReducedMotion } from './index';
const motion = usePreferredReducedMotion();
const reduced = computed(() => motion.value === 'reduce');
// Mirror the recommended pattern: derive a transition duration from the
// preference so animations are disabled when the user asks for reduced motion.
const duration = computed(() => (reduced.value ? 0 : 1.2));
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
prefers-reduced-motion
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition-colors"
:class="reduced
? 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'
: 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'"
>
{{ motion }}
</span>
</div>
<!-- Animated demo box: the orbiting dot pauses when motion is reduced. -->
<div class="flex h-40 items-center justify-center rounded-xl border border-(--border) bg-(--bg-inset)">
<div class="relative size-24">
<div class="absolute inset-0 rounded-full border-2 border-dashed border-(--border-strong)" />
<div
class="orbit absolute left-1/2 top-1/2 size-24"
:style="{ animationDuration: `${duration}s`, animationPlayState: reduced ? 'paused' : 'running' }"
>
<span class="absolute -left-2 -top-2 size-4 rounded-full bg-(--accent) shadow-lg" />
</div>
<div class="absolute inset-0 flex items-center justify-center">
<span class="text-2xl">{{ reduced ? '⏸' : '🎞️' }}</span>
</div>
</div>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Derived setting
</span>
<div class="mt-1 flex items-baseline gap-2">
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ reduced ? 0 : 1200 }}
</span>
<span class="text-sm text-(--fg-muted)">ms transition</span>
</div>
<p class="mt-2 text-sm text-(--fg-muted)">
{{ reduced
? 'Reduced motion requested — animations are disabled.'
: 'Full motion — animations run at normal speed.' }}
</p>
</div>
<p class="text-xs text-(--fg-subtle)">
Read-only: enable "Reduce motion" in your OS accessibility settings to pause the orbit.
</p>
</div>
</template>
<style scoped>
.orbit {
animation-name: spin;
animation-timing-function: linear;
animation-iteration-count: infinite;
}
@keyframes spin {
to {
transform: rotate(360deg);
}
}
</style>
@@ -0,0 +1,60 @@
<script setup lang="ts">
import { computed } from 'vue';
import { usePreferredReducedTransparency } from './index';
const transparency = usePreferredReducedTransparency();
const isReduced = computed(() => transparency.value === 'reduce');
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
prefers-reduced-transparency
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isReduced
? 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'
: 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'"
>
<span
class="size-1.5 rounded-full"
:class="isReduced ? 'bg-amber-500' : 'bg-emerald-500'"
/>
{{ transparency }}
</span>
</div>
<!-- Live preview: a frosted glass panel that flattens when reduce is preferred -->
<div class="relative overflow-hidden rounded-xl border border-(--border) bg-(--bg-inset) p-4">
<div
class="pointer-events-none absolute -left-6 -top-8 size-28 rounded-full bg-(--accent) opacity-60 blur-xl"
/>
<div
class="pointer-events-none absolute -bottom-10 right-2 size-24 rounded-full bg-sky-500 opacity-50 blur-xl"
/>
<div
class="relative rounded-lg border border-(--border) p-4 transition"
:class="isReduced
? 'bg-(--bg-elevated)'
: 'bg-(--bg-elevated)/60 backdrop-blur-md'"
>
<p class="text-sm font-medium text-(--fg)">
Glass card
</p>
<p class="mt-1 text-sm text-(--fg-muted)">
{{ isReduced
? 'Translucency removed for clarity.'
: 'Background blurs through the panel.' }}
</p>
</div>
</div>
<p class="text-xs leading-relaxed text-(--fg-subtle)">
Toggle <span class="font-mono text-(--fg-muted)">Reduce transparency</span> in your OS
accessibility settings to see this update live.
</p>
</div>
</template>
@@ -0,0 +1,117 @@
<script setup lang="ts">
import { ref, shallowRef } from 'vue';
import { useScriptTag } from './index';
// A tiny, well-known public UMD script (no side effects beyond defining a global).
const src = 'https://cdn.jsdelivr.net/npm/canvas-confetti@1.9.3/dist/confetti.browser.min.js';
const status = ref<'idle' | 'loading' | 'loaded' | 'error'>('idle');
const loadedAt = shallowRef<string | null>(null);
const { scriptTag, load, unload } = useScriptTag(
src,
() => {
status.value = 'loaded';
loadedAt.value = new Date().toLocaleTimeString();
},
{ manual: true },
);
async function onLoad() {
if (status.value === 'loading') return;
status.value = 'loading';
try {
await load();
}
catch {
status.value = 'error';
}
}
function onUnload() {
unload();
status.value = 'idle';
loadedAt.value = null;
}
const statusStyles = {
idle: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)',
loading: 'border-sky-500/30 bg-sky-500/10 text-sky-600 dark:text-sky-400',
loaded: 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400',
error: 'border-red-500/30 bg-red-500/10 text-red-600 dark:text-red-400',
} as const;
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center justify-between gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Script status
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium capitalize"
:class="statusStyles[status]"
>
<span
class="size-1.5 rounded-full"
:class="{
'bg-(--fg-subtle)': status === 'idle',
'bg-sky-500 animate-pulse': status === 'loading',
'bg-emerald-500': status === 'loaded',
'bg-red-500': status === 'error',
}"
/>
{{ status }}
</span>
</div>
<div class="mt-3 truncate rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-xs text-(--fg-muted)">
{{ src }}
</div>
<dl class="mt-3 grid grid-cols-2 gap-2 text-sm">
<div>
<dt class="text-xs text-(--fg-subtle)">
&lt;script&gt; element
</dt>
<dd class="font-mono text-(--fg)">
{{ scriptTag ? 'present' : 'null' }}
</dd>
</div>
<div>
<dt class="text-xs text-(--fg-subtle)">
Loaded at
</dt>
<dd class="font-mono text-(--fg)">
{{ loadedAt ?? '—' }}
</dd>
</div>
</dl>
</div>
<div class="flex gap-2">
<button
type="button"
:disabled="status === 'loading' || status === 'loaded'"
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="onLoad"
>
{{ status === 'loading' ? 'Loading…' : 'Load script' }}
</button>
<button
type="button"
:disabled="status !== 'loaded'"
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="onUnload"
>
Unload
</button>
</div>
<p class="text-xs leading-relaxed text-(--fg-subtle)">
Manual mode the tag is injected into <span class="font-mono text-(--fg-muted)">&lt;head&gt;</span>
only when you click, and removed on unload.
</p>
</div>
</template>
@@ -0,0 +1,105 @@
<script setup lang="ts">
import { reactive, ref } from 'vue';
import { useShare } from './index';
const payload = reactive({
title: 'Vue Toolkit',
text: 'A collection of essential Vue composables.',
url: 'https://vuejs.org',
});
const { share, isSupported } = useShare(payload);
const lastResult = ref<'shared' | 'dismissed' | null>(null);
async function onShare() {
lastResult.value = null;
try {
await share();
lastResult.value = 'shared';
}
catch {
// User dismissed the share sheet (AbortError) — treat as a non-error.
lastResult.value = 'dismissed';
}
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Web Share API
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isSupported
? '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="size-1.5 rounded-full"
:class="isSupported ? 'bg-emerald-500' : 'bg-(--fg-subtle)'"
/>
{{ isSupported ? 'Supported' : 'Unsupported' }}
</span>
</div>
<div class="flex flex-col gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<label class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Title</span>
<input
v-model="payload.title"
type="text"
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">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Text</span>
<input
v-model="payload.text"
type="text"
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">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">URL</span>
<input
v-model="payload.url"
type="url"
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>
</div>
<button
type="button"
:disabled="!isSupported"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="onShare"
>
<svg class="size-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
<circle cx="18" cy="5" r="3" />
<circle cx="6" cy="12" r="3" />
<circle cx="18" cy="19" r="3" />
<line x1="8.59" y1="13.51" x2="15.42" y2="17.49" />
<line x1="15.41" y1="6.51" x2="8.59" y2="10.49" />
</svg>
Share
</button>
<p v-if="!isSupported" class="text-xs leading-relaxed text-(--fg-subtle)">
The Web Share API is not available in this browser. It works on most mobile
browsers and Safari.
</p>
<p
v-else-if="lastResult"
class="text-xs font-medium"
:class="lastResult === 'shared'
? 'text-emerald-600 dark:text-emerald-400'
: 'text-(--fg-muted)'"
>
{{ lastResult === 'shared' ? 'Content shared.' : 'Share sheet dismissed.' }}
</p>
</div>
</template>
@@ -0,0 +1,75 @@
<script setup lang="ts">
import { useStyleTag } from './index';
const initialCss = `.styletag-demo-box {
background: linear-gradient(135deg, #6366f1, #ec4899);
color: white;
letter-spacing: 0.05em;
}`;
const { id, css, isLoaded, load, unload } = useStyleTag(initialCss, { immediate: false });
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Injected style tag
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isLoaded
? '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="size-1.5 rounded-full"
:class="isLoaded ? 'bg-emerald-500' : 'bg-(--fg-subtle)'"
/>
{{ isLoaded ? 'Loaded' : 'Unloaded' }}
</span>
</div>
<!-- Live target affected by the injected stylesheet -->
<div class="rounded-xl border border-(--border) bg-(--bg-inset) p-4">
<div
class="styletag-demo-box rounded-lg border border-(--border) bg-(--bg-elevated) px-4 py-6 text-center text-sm font-semibold text-(--fg) transition-all"
>
Styled by &lt;style id="{{ id }}"&gt;
</div>
</div>
<label class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">CSS source</span>
<textarea
v-model="css"
rows="5"
spellcheck="false"
class="w-full resize-none rounded-lg border border-(--border) bg-(--bg) px-3 py-2 font-mono text-xs leading-relaxed text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
/>
</label>
<div class="flex gap-2">
<button
type="button"
:disabled="isLoaded"
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="load"
>
Load
</button>
<button
type="button"
:disabled="!isLoaded"
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="unload"
>
Unload
</button>
</div>
<p class="text-xs leading-relaxed text-(--fg-subtle)">
Editing the CSS updates the live stylesheet instantly while loaded.
</p>
</div>
</template>
@@ -1,54 +1,84 @@
<script setup lang="ts">import { useTabLeader } from './index'; <script setup lang="ts">
import { useTabLeader } from './index';
const { isLeader, isSupported, acquire, release } = useTabLeader('docs-demo-leader'); const { isLeader, isSupported, acquire, release } = useTabLeader('vue-toolkit-demo-leader');
</script> </script>
<template> <template>
<div class="space-y-4"> <div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center gap-3"> <div class="flex items-center justify-between">
<span class="text-sm font-medium text-(--color-text-soft)">Web Locks API:</span> <span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
<span Web Locks election
class="inline-flex items-center gap-1.5 text-sm font-mono px-2 py-0.5 rounded border"
:class="isSupported ? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-700' : 'border-red-500/30 bg-red-500/10 text-red-700'"
>
{{ isSupported ? 'Supported' : 'Not supported' }}
</span> </span>
</div>
<div class="flex items-center gap-3">
<span class="text-sm font-medium text-(--color-text-soft)">Leader status:</span>
<span <span
class="inline-flex items-center gap-1.5 text-sm font-mono px-2 py-0.5 rounded border" class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isLeader ? 'border-brand-500/30 bg-brand-500/10 text-brand-600' : 'border-(--color-border) bg-(--color-bg-mute) text-(--color-text-soft)'" :class="isSupported
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
> >
<span <span
class="w-2 h-2 rounded-full" class="size-1.5 rounded-full"
:class="isLeader ? 'bg-brand-500 animate-pulse' : 'bg-(--color-text-mute)'" :class="isSupported ? 'bg-emerald-500' : 'bg-(--fg-subtle)'"
/> />
{{ isLeader ? 'Leader' : 'Follower' }} {{ isSupported ? 'Supported' : 'Unsupported' }}
</span> </span>
</div> </div>
<p class="text-xs text-(--color-text-mute)"> <!-- Primary leader state -->
Open this page in multiple tabs only one will be the leader. <div
Close the leader tab and another will take over automatically. class="flex flex-col items-center gap-2 rounded-xl border p-6 transition-colors"
</p> :class="isLeader
? 'border-(--accent) bg-(--accent-subtle)'
: 'border-(--border) bg-(--bg-elevated)'"
>
<div
class="flex size-12 items-center justify-center rounded-full transition-colors"
:class="isLeader
? 'bg-(--accent) text-(--accent-fg)'
: 'bg-(--bg-inset) text-(--fg-subtle)'"
>
<svg class="size-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
<path d="m12 2 3 7h7l-5.5 4.5L18.5 21 12 16.5 5.5 21 7.5 13.5 2 9h7z" />
</svg>
</div>
<p
class="text-lg font-bold"
:class="isLeader ? 'text-(--accent-text)' : 'text-(--fg)'"
>
{{ isLeader ? 'Leader tab' : 'Follower tab' }}
</p>
<p class="text-center text-xs text-(--fg-muted)">
{{ isLeader
? 'This tab holds the lock and would run exclusive work.'
: 'Another tab is the leader, or leadership was released.' }}
</p>
</div>
<div class="flex items-center gap-2 pt-2"> <div class="flex gap-2">
<button <button
class="px-3 py-1.5 text-sm rounded-md border border-(--color-border) bg-(--color-bg) hover:bg-(--color-bg-mute) text-(--color-text-soft) transition-colors cursor-pointer disabled:opacity-50 disabled:cursor-not-allowed" type="button"
:disabled="!isSupported || isLeader" :disabled="!isSupported || isLeader"
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="acquire" @click="acquire"
> >
Acquire Acquire
</button> </button>
<button <button
class="px-3 py-1.5 text-sm rounded-md border border-(--color-border) bg-(--color-bg) hover:bg-(--color-bg-mute) text-(--color-text-soft) transition-colors cursor-pointer disabled:opacity-50 disabled:cursor-not-allowed" type="button"
:disabled="!isSupported || !isLeader" :disabled="!isSupported || !isLeader"
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="release" @click="release"
> >
Release Release
</button> </button>
</div> </div>
<p v-if="!isSupported" class="text-xs leading-relaxed text-(--fg-subtle)">
The Web Locks API is not available in this browser.
</p>
<p v-else class="text-xs leading-relaxed text-(--fg-subtle)">
Open this page in a second tab only one tab is the leader at a time. Release
here and watch another tab take over.
</p>
</div> </div>
</template> </template>
@@ -0,0 +1,93 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useTextareaAutosize } from './index';
const maxHeight = ref(220);
const resizes = ref(0);
const { textarea, input, triggerResize } = useTextareaAutosize({
maxHeight,
onResize: () => resizes.value++,
});
input.value = 'Type here and watch the textarea grow with your content.\n\nIt re-fits on every keystroke, on programmatic changes, and when the available width changes (try resizing the panel).';
function loadSample(): void {
input.value = [
'Release notes — v0.0.15',
'',
'- useTextareaAutosize now reacts to width reflow',
'- Title sync is SSR-safe',
'- URL params decode repeated keys to arrays',
].join('\n');
}
function clear(): void {
input.value = '';
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Auto-growing textarea
</label>
<textarea
ref="textarea"
v-model="input"
placeholder="Start typing…"
rows="1"
class="w-full resize-none overflow-y-auto rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm leading-relaxed text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
/>
</div>
<div class="flex flex-col gap-2 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Max height
</span>
<span class="font-mono text-sm tabular-nums text-(--fg)">{{ maxHeight }}px</span>
</div>
<input
v-model.number="maxHeight"
type="range"
min="80"
max="400"
step="20"
class="w-full accent-(--accent)"
>
<div class="flex items-center justify-between border-t border-(--border) pt-2 text-xs">
<span class="text-(--fg-muted)">{{ input.length }} chars</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 font-medium text-(--fg-muted)">
{{ resizes }} resizes
</span>
</div>
</div>
<div class="flex flex-wrap gap-2">
<button
type="button"
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"
@click="loadSample"
>
Load sample
</button>
<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="triggerResize"
>
Trigger resize
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!input"
@click="clear"
>
Clear
</button>
</div>
</div>
</template>
@@ -0,0 +1,78 @@
<script setup lang="ts">
import { ref, watch } from 'vue';
import { useTitle } from './index';
const appName = ref('Toolkit');
// Two-way bound to document.title, formatted through the template.
const title = useTitle('Dashboard', {
titleTemplate: (t) => `${t} · ${appName.value}`,
});
const presets = ['Dashboard', 'Inbox', 'Settings', 'Billing'];
// Re-apply the template when the app name changes by re-writing the title.
watch(appName, () => {
// eslint-disable-next-line no-self-assign
title.value = title.value;
});
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Live document title
</span>
<div class="mt-2 flex items-center gap-2 rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2.5">
<svg viewBox="0 0 24 24" fill="none" class="size-4 shrink-0 text-(--fg-subtle)">
<circle cx="12" cy="12" r="9" stroke="currentColor" stroke-width="1.5" />
<path d="M3 12h18M12 3a14 14 0 0 1 0 18M12 3a14 14 0 0 0 0 18" stroke="currentColor" stroke-width="1.5" />
</svg>
<span class="truncate font-mono text-sm text-(--fg)">
{{ title || 'Untitled' }} · {{ appName }}
</span>
</div>
</div>
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Page title
</label>
<input
v-model="title"
type="text"
placeholder="Enter a page title"
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)"
>
</div>
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
App name (template suffix)
</label>
<input
v-model="appName"
type="text"
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)"
>
</div>
<div class="flex flex-wrap gap-2">
<button
v-for="preset in presets"
:key="preset"
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"
:class="title === preset ? 'border-(--accent) text-(--accent-text)' : ''"
@click="title = preset"
>
{{ preset }}
</button>
</div>
<p class="text-xs text-(--fg-subtle)">
Check your browser tab it updates in real time.
</p>
</div>
</template>
@@ -0,0 +1,110 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useUrlSearchParams } from './index';
interface Filters {
q: string;
sort: string;
tags: string[];
}
// Reactive object mirrored to the URL query string. Mutate it to update the URL.
const params = useUrlSearchParams<Filters>('history', {
initialValue: { q: 'vue', sort: 'recent', tags: ['ui'] },
removeFalsyValues: true,
});
const sorts = ['recent', 'popular', 'name'];
const allTags = ['ui', 'browser', 'animation', 'sensors'];
const activeTags = computed<string[]>(() =>
Array.isArray(params.tags) ? params.tags : params.tags ? [params.tags] : [],
);
function toggleTag(tag: string): void {
const next = new Set(activeTags.value);
if (next.has(tag))
next.delete(tag);
else
next.add(tag);
params.tags = [...next];
}
const queryString = computed(() => {
const usp = new URLSearchParams();
if (params.q)
usp.set('q', params.q);
if (params.sort)
usp.set('sort', params.sort);
for (const t of activeTags.value)
usp.append('tags', t);
const s = usp.toString();
return s ? `?${s}` : '(empty)';
});
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex flex-col gap-1.5">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Search query
</label>
<input
v-model="params.q"
type="text"
placeholder="Search…"
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)"
>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Sort by</span>
<div class="flex flex-wrap gap-2">
<button
v-for="s in sorts"
:key="s"
type="button"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="params.sort === s
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="params.sort = s"
>
{{ s }}
</button>
</div>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Tags (repeated keys array)
</span>
<div class="flex flex-wrap gap-2">
<button
v-for="tag in allTags"
:key="tag"
type="button"
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition cursor-pointer"
:class="activeTags.includes(tag)
? 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted) hover:border-(--border-strong)'"
@click="toggleTag(tag)"
>
#{{ tag }}
</button>
</div>
</div>
<div class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Live URL query
</span>
<div class="overflow-x-auto rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<span class="whitespace-nowrap">{{ queryString }}</span>
</div>
<p class="text-xs text-(--fg-subtle)">
The browser address bar updates as you edit. Falsy values are dropped.
</p>
</div>
</div>
</template>
@@ -0,0 +1,108 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useVibrate } from './index';
const presets: Record<string, number[]> = {
Pulse: [200],
Double: [100, 60, 100],
SOS: [100, 60, 100, 60, 100, 200, 250, 60, 250, 60, 250, 200, 100, 60, 100, 60, 100],
Heartbeat: [120, 100, 120, 500],
};
const { isSupported, pattern, vibrate, stop, intervalControls } = useVibrate({
pattern: presets.Double,
interval: 1500,
});
const activePreset = ref('Double');
const looping = intervalControls?.isActive;
function applyPreset(name: string): void {
activePreset.value = name;
pattern.value = presets[name];
vibrate();
}
function toggleLoop(): void {
if (intervalControls?.isActive.value)
stop();
else
intervalControls?.resume();
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-700 dark:text-amber-300"
>
The Vibration API is not supported in this browser. Try a mobile device.
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Current pattern (ms)
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="isSupported
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
{{ isSupported ? 'supported' : 'unsupported' }}
</span>
</div>
<div class="mt-2 overflow-x-auto rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
[{{ Array.isArray(pattern) ? pattern.join(', ') : pattern }}]
</div>
</div>
<div class="flex flex-col gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Presets</span>
<div class="grid grid-cols-2 gap-2">
<button
v-for="(_, name) in presets"
:key="name"
type="button"
:disabled="!isSupported"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:class="activePreset === name
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="applyPreset(name)"
>
{{ name }}
</button>
</div>
</div>
<div class="flex flex-wrap gap-2">
<button
type="button"
:disabled="!isSupported"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="vibrate()"
>
Vibrate now
</button>
<button
type="button"
:disabled="!isSupported"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="toggleLoop"
>
{{ looping ? 'Stop loop' : 'Loop every 1.5s' }}
</button>
<button
type="button"
:disabled="!isSupported"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="stop"
>
Stop
</button>
</div>
</div>
</template>
@@ -0,0 +1,78 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useWakeLock } from './index';
const { isSupported, isActive, sentinel, request, release } = useWakeLock();
const error = ref<string | null>(null);
async function toggle(): Promise<void> {
error.value = null;
try {
if (sentinel.value)
await release();
else
await request('screen');
}
catch (e) {
error.value = e instanceof Error ? e.message : String(e);
}
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-700 dark:text-amber-300"
>
The Screen Wake Lock API is not supported in this browser.
</div>
<div class="flex flex-col items-center gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-6">
<div
class="flex size-16 items-center justify-center rounded-full border transition"
:class="isActive
? 'border-emerald-500/40 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-subtle)'"
>
<svg viewBox="0 0 24 24" fill="none" class="size-7">
<rect x="4" y="3" width="16" height="14" rx="2" stroke="currentColor" stroke-width="1.5" />
<path d="M8 21h8" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" />
<path v-if="isActive" d="m9 9 2 2 4-4" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" />
</svg>
</div>
<div class="text-center">
<p class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ isActive ? 'AWAKE' : 'IDLE' }}
</p>
<p class="mt-1 text-xs text-(--fg-muted)">
{{ isActive ? 'Screen will stay on' : 'Screen may sleep normally' }}
</p>
</div>
</div>
<div class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2.5 text-sm">
<span class="text-(--fg-muted)">Lock held</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-elevated) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">
{{ sentinel ? 'yes' : 'none' }}
</span>
</div>
<button
type="button"
:disabled="!isSupported"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="toggle"
>
{{ sentinel ? 'Release wake lock' : 'Request wake lock' }}
</button>
<p v-if="error" class="text-xs text-red-600 dark:text-red-400">
{{ error }}
</p>
<p v-else class="text-xs text-(--fg-subtle)">
The lock auto-releases when the tab is hidden and re-acquires when visible again.
</p>
</div>
</template>
@@ -0,0 +1,119 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useWebNotification } from './index';
const title = ref('New message from Ada');
const body = ref('Hey — the deploy is green. Ship it whenever you are ready.');
const lastEvent = ref<string>('');
const {
isSupported,
notification,
permissionGranted,
show,
close,
ensurePermissionGranted,
onClick,
onShow,
onClose,
onError,
} = useWebNotification({
// Don't prompt on mount — wait for an explicit user gesture below.
requestPermissions: false,
icon: 'https://vuejs.org/images/logo.png',
requireInteraction: false,
});
onShow(() => (lastEvent.value = 'shown'));
onClick(() => (lastEvent.value = 'clicked'));
onClose(() => (lastEvent.value = 'closed'));
onError(() => (lastEvent.value = 'error'));
async function requestPermission() {
await ensurePermissionGranted();
}
function notify() {
show({ title: title.value, body: body.value });
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-sm text-amber-700 dark:text-amber-400"
>
Notifications are not supported in this browser.
</div>
<template v-else>
<div class="flex items-center justify-between rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div>
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Permission
</div>
<div class="mt-1 flex items-center gap-2 text-sm text-(--fg-muted)">
<span
class="inline-block size-2 rounded-full transition"
:class="permissionGranted ? 'bg-emerald-500' : 'bg-(--border-strong)'"
/>
{{ permissionGranted ? 'Granted' : 'Not granted' }}
</div>
</div>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="permissionGranted"
@click="requestPermission"
>
{{ permissionGranted ? 'Allowed' : 'Request access' }}
</button>
</div>
<div class="flex flex-col gap-3">
<label class="flex flex-col gap-1.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Title</span>
<input
v-model="title"
type="text"
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">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Body</span>
<textarea
v-model="body"
rows="2"
class="w-full resize-none 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>
</div>
<div class="flex items-center gap-2">
<button
class="flex-1 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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!permissionGranted"
@click="notify"
>
Show notification
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!notification"
@click="close"
>
Close
</button>
</div>
<div class="flex items-center justify-between rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-sm">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Last event</span>
<span class="font-mono text-(--fg)">{{ lastEvent || '—' }}</span>
</div>
<p v-if="!permissionGranted" class="text-xs text-(--fg-subtle)">
Grant access first, then trigger a notification. Switch back to this tab and it auto-closes.
</p>
</template>
</div>
</template>
@@ -0,0 +1,88 @@
<script setup lang="ts">
import { ref } from 'vue';
import { createReusableTemplate } from './index';
interface Member {
name: string;
role: string;
online: boolean;
}
// Define a stat card template once, reuse it for every metric below.
const [DefineStat, ReuseStat] = createReusableTemplate<{ label: string; value: string }>();
// Object form + typed bindings for a richer row template.
const { define: DefineMember, reuse: ReuseMember } = createReusableTemplate<Member>();
const team = ref<Member[]>([
{ name: 'Ada Lovelace', role: 'Engineering', online: true },
{ name: 'Grace Hopper', role: 'Design', online: false },
{ name: 'Alan Turing', role: 'Research', online: true },
]);
function toggle(member: Member) {
member.online = !member.online;
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<!-- Templates are captured here, rendered wherever Reuse* appears -->
<DefineStat v-slot="{ label, value }">
<div class="flex-1 rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
{{ label }}
</div>
<div class="mt-1 font-mono text-2xl font-bold tabular-nums text-(--fg)">
{{ value }}
</div>
</div>
</DefineStat>
<DefineMember v-slot="{ name, role, online }">
<div class="flex items-center gap-3">
<span
class="inline-block size-2 shrink-0 rounded-full transition"
:class="online ? 'bg-emerald-500' : 'bg-(--border-strong)'"
/>
<div class="min-w-0 flex-1">
<div class="truncate text-sm font-medium text-(--fg)">{{ name }}</div>
<div class="text-xs text-(--fg-subtle)">{{ role }}</div>
</div>
<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)"
>
{{ online ? 'Online' : 'Away' }}
</span>
</div>
</DefineMember>
<div class="flex gap-2">
<ReuseStat label="Members" :value="String(team.length)" />
<ReuseStat label="Online" :value="String(team.filter(m => m.online).length)" />
</div>
<div class="flex flex-col gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Team click a row to toggle status
</div>
<button
v-for="member in team"
:key="member.name"
class="rounded-lg p-2 text-left transition hover:bg-(--bg-inset) active:scale-[0.99] cursor-pointer"
@click="toggle(member)"
>
<ReuseMember
:name="member.name"
:role="member.role"
:online="member.online"
/>
</button>
</div>
<p class="text-xs text-(--fg-subtle)">
Both card and row markup are declared once via <code class="font-mono">DefineTemplate</code> and
rendered from multiple <code class="font-mono">ReuseTemplate</code> call sites.
</p>
</div>
</template>
@@ -0,0 +1,70 @@
<script setup lang="ts">
import { ref, useTemplateRef } from 'vue';
import { unrefElement } from './index';
const boxRef = useTemplateRef<HTMLElement>('box');
const width = ref(280);
const tag = ref('—');
const rect = ref<{ w: number; h: number } | null>(null);
function measure() {
// unrefElement turns the template ref into the raw DOM element, regardless of
// whether it points at an HTMLElement or a component instance.
const el = unrefElement(boxRef);
if (!el)
return;
tag.value = el.tagName.toLowerCase();
const { width: w, height: h } = el.getBoundingClientRect();
rect.value = { w: Math.round(w), h: Math.round(h) };
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div
ref="box"
class="flex items-center justify-center rounded-xl border border-dashed border-(--border-strong) bg-(--bg-inset) py-8 text-sm font-medium text-(--fg-muted) transition-[width] duration-300 ease-out"
:style="{ width: `${width}px` }"
>
Target element
</div>
<label class="flex flex-col gap-1.5">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Width</span>
<span class="font-mono text-sm tabular-nums text-(--fg-muted)">{{ width }}px</span>
</div>
<input
v-model.number="width"
type="range"
min="120"
max="340"
class="w-full accent-(--accent)"
>
</label>
<button
class="inline-flex items-center justify-center gap-1.5 rounded-lg border border-transparent bg-(--accent) px-3 py-1.5 text-sm font-medium text-(--accent-fg) transition hover:bg-(--accent-hover) active:scale-[0.98] cursor-pointer"
@click="measure"
>
Read element via unrefElement
</button>
<div class="flex flex-col gap-2 rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex items-center justify-between">
<span class="text-(--fg-subtle)">tagName</span>
<span>{{ tag }}</span>
</div>
<div class="flex items-center justify-between">
<span class="text-(--fg-subtle)">boundingRect</span>
<span>{{ rect ? `${rect.w} × ${rect.h}` : '—' }}</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
Resize the box, then measure. <code class="font-mono">unrefElement</code> unwraps the template
ref to the real DOM node it also resolves a component ref to its <code class="font-mono">$el</code>.
</p>
</div>
</template>
@@ -0,0 +1,101 @@
<script setup lang="ts">
import { ref, watchEffect } from 'vue';
import { useCurrentElement } from './index';
// Resolves to this component's root DOM element, re-read on mount + every update.
const el = useCurrentElement<HTMLElement>();
const padding = ref(16);
const childCount = ref(3);
const info = ref<{ tag: string; children: number; height: number } | null>(null);
watchEffect(() => {
const node = el.value;
if (!node) {
// SSR / pre-mount: el.value is undefined.
info.value = null;
return;
}
info.value = {
tag: node.tagName.toLowerCase(),
children: node.querySelectorAll('[data-chip]').length,
height: Math.round(node.getBoundingClientRect().height),
};
});
const chips = ['vue', 'reactivity', 'composables', 'ssr', 'typescript', 'dom'];
</script>
<template>
<div
class="flex w-full max-w-sm flex-col gap-4 rounded-xl border border-(--border) bg-(--bg-elevated)"
:style="{ padding: `${padding}px` }"
>
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Live measurement of this component's root
</div>
<div class="flex flex-wrap gap-1.5">
<span
v-for="chip in chips.slice(0, childCount)"
:key="chip"
data-chip
class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)"
>
{{ chip }}
</span>
</div>
<label class="flex flex-col gap-1.5">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Root padding</span>
<span class="font-mono text-sm tabular-nums text-(--fg-muted)">{{ padding }}px</span>
</div>
<input
v-model.number="padding"
type="range"
min="8"
max="40"
class="w-full accent-(--accent)"
>
</label>
<div class="flex items-center gap-2">
<button
class="flex-1 inline-flex items-center justify-center gap-1.5 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="childCount <= 1"
@click="childCount--"
>
Remove chip
</button>
<button
class="flex-1 inline-flex items-center justify-center gap-1.5 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="childCount >= chips.length"
@click="childCount++"
>
Add chip
</button>
</div>
<div class="flex flex-col gap-2 rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex items-center justify-between">
<span class="text-(--fg-subtle)">el.value</span>
<span>{{ info ? `<${info.tag}>` : 'undefined' }}</span>
</div>
<div class="flex items-center justify-between">
<span class="text-(--fg-subtle)">chips in DOM</span>
<span>{{ info?.children ?? '' }}</span>
</div>
<div class="flex items-center justify-between">
<span class="text-(--fg-subtle)">root height</span>
<span>{{ info ? `${info.height}px` : '' }}</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
The computed re-reads <code class="font-mono">$el</code> on every update, so the readout tracks
padding and chip changes automatically.
</p>
</div>
</template>
@@ -0,0 +1,96 @@
<script setup lang="ts">
import type { ComponentPublicInstance } from 'vue';
import { defineComponent, h, ref, useTemplateRef, watchEffect } from 'vue';
import { useForwardExpose } from './index';
// A headless wrapper: it renders a child <input> but transparently forwards the
// child's $el (and any exposed API) up to whoever holds a ref to the wrapper.
const FieldWrapper = defineComponent({
name: 'FieldWrapper',
setup() {
// forwardRef is bound to the inner element's :ref; currentElement resolves
// to the underlying HTMLElement, skipping text/comment nodes.
const { forwardRef, currentElement } = useForwardExpose();
return () =>
h('input', {
ref: forwardRef,
placeholder: 'Forwarded input',
// expose the resolved element so the demo can show it changed live
'data-tag': currentElement.value?.tagName.toLowerCase(),
class:
'w-full rounded-lg border border-(--border) bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)',
});
},
});
// The parent holds a ref to the wrapper — but thanks to useForwardExpose,
// wrapper.$el points straight at the inner <input>.
const field = useTemplateRef<ComponentPublicInstance>('field');
const resolved = ref<{ tag: string; value: string } | null>(null);
watchEffect(() => {
const el = field.value?.$el as HTMLInputElement | undefined;
resolved.value = el ? { tag: el.tagName.toLowerCase(), value: el.value } : null;
});
function focusForwarded() {
// Reaching through the wrapper straight to the real DOM node.
(field.value?.$el as HTMLInputElement | undefined)?.focus();
}
function fillSample() {
const el = field.value?.$el as HTMLInputElement | undefined;
if (el) {
el.value = 'ada@anthropic.dev';
resolved.value = { tag: el.tagName.toLowerCase(), value: el.value };
}
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex flex-col gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Wrapper component
</div>
<FieldWrapper ref="field" />
<p class="text-xs text-(--fg-subtle)">
<code class="font-mono">&lt;FieldWrapper&gt;</code> renders an inner input, but
<code class="font-mono">useForwardExpose</code> makes its <code class="font-mono">$el</code>
resolve to that input.
</p>
</div>
<div class="flex items-center gap-2">
<button
class="flex-1 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"
@click="focusForwarded"
>
Focus forwarded $el
</button>
<button
class="inline-flex items-center justify-center gap-1.5 rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-1.5 text-sm font-medium text-(--fg) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.98] cursor-pointer"
@click="fillSample"
>
Fill sample
</button>
</div>
<div class="flex flex-col gap-2 rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex items-center justify-between">
<span class="text-(--fg-subtle)">field.$el</span>
<span>{{ resolved ? `<${resolved.tag}>` : 'undefined' }}</span>
</div>
<div class="flex items-center justify-between gap-3">
<span class="text-(--fg-subtle)">value</span>
<span class="truncate">{{ resolved?.value || '""' }}</span>
</div>
</div>
<p class="text-xs text-(--fg-subtle)">
The parent never touches the input directly it holds a ref to the wrapper, whose
<code class="font-mono">$el</code> is forwarded to the inner element.
</p>
</div>
</template>
@@ -0,0 +1,116 @@
<script setup lang="ts">
import { computed, nextTick, ref } from 'vue';
import { useTemplateRefsList } from './index';
interface Track {
id: number;
title: string;
artist: string;
}
let nextId = 6;
const tracks = ref<Track[]>([
{ id: 1, title: 'Midnight City', artist: 'M83' },
{ id: 2, title: 'Resonance', artist: 'Home' },
{ id: 3, title: 'Nightcall', artist: 'Kavinsky' },
{ id: 4, title: 'Strangers', artist: 'Sigrid' },
{ id: 5, title: 'Open Eye Signal', artist: 'Jon Hopkins' },
]);
// Collect a live, document-ordered array of every rendered row element.
const { refs, set } = useTemplateRefsList<HTMLLIElement>();
const lastMeasured = ref<{ index: number; width: number } | null>(null);
// Reads the freshly collected refs to measure the DOM directly.
function measureLast() {
const els = refs.value;
if (els.length === 0)
return;
const index = els.length - 1;
const el = els[index]!;
lastMeasured.value = { index, width: Math.round(el.getBoundingClientRect().width) };
el.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}
async function addTrack() {
const sample = { id: nextId++, title: `Aurora ${nextId}`, artist: 'Synthwave' };
tracks.value.push(sample);
// Wait for the update flush so the new element is in `refs`.
await nextTick();
measureLast();
}
function removeTrack(id: number) {
tracks.value = tracks.value.filter(t => t.id !== id);
lastMeasured.value = null;
}
const collected = computed(() => refs.value.length);
</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)">Playlist</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)">
{{ collected }} refs collected
</span>
</div>
<ul class="flex flex-col gap-2 max-h-56 overflow-y-auto rounded-xl border border-(--border) bg-(--bg-elevated) p-2">
<li
v-for="(track, index) in tracks"
:key="track.id"
:ref="set"
class="group flex items-center gap-3 rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2 transition"
:class="lastMeasured?.index === index ? 'border-(--accent) ring-2 ring-(--ring)' : 'hover:border-(--border-strong)'"
>
<span class="font-mono text-xs tabular-nums text-(--fg-subtle) w-5 text-right">{{ index + 1 }}</span>
<span class="flex min-w-0 flex-1 flex-col">
<span class="truncate text-sm font-medium text-(--fg)">{{ track.title }}</span>
<span class="truncate text-xs text-(--fg-muted)">{{ track.artist }}</span>
</span>
<button
type="button"
aria-label="Remove track"
class="rounded-md px-1.5 py-0.5 text-xs text-(--fg-subtle) opacity-0 transition hover:text-(--fg) group-hover:opacity-100 cursor-pointer"
@click="removeTrack(track.id)"
>
</button>
</li>
<li v-if="tracks.length === 0" class="px-3 py-6 text-center text-sm text-(--fg-subtle)">
No tracks add one to collect a ref.
</li>
</ul>
<div
v-if="lastMeasured"
class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums"
>
refs[{{ lastMeasured.index }}].width = {{ lastMeasured.width }}px
</div>
<p v-else class="text-xs text-(--fg-subtle)">
Add a track to measure the newest collected element directly from the DOM.
</p>
<div class="flex gap-2">
<button
type="button"
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"
@click="addTrack"
>
Add track
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="collected === 0"
@click="measureLast"
>
Measure last
</button>
</div>
</div>
</template>
@@ -0,0 +1,93 @@
<script setup lang="ts">
import { computed, ref, shallowRef } from 'vue';
import { useVirtualList } from './index';
// 10,000 rows — only the visible window (plus overscan) is ever in the DOM.
const total = 10000;
const items = shallowRef(
Array.from({ length: total }, (_, i) => ({
id: i,
label: `Row #${(i + 1).toString().padStart(5, '0')}`,
hue: (i * 37) % 360,
})),
);
const itemHeight = 44;
const { list, containerProps, wrapperProps, scrollTo } = useVirtualList(items, {
itemHeight,
overscan: 6,
});
const jumpTo = ref(5000);
function go() {
const index = Math.min(Math.max(jumpTo.value || 0, 0), total - 1);
scrollTo(index, { behavior: 'smooth', block: 'center' });
}
const visibleRange = computed(() => {
if (list.value.length === 0)
return '—';
const first = list.value[0]!.index;
const last = list.value[list.value.length - 1]!.index;
return `${first}${last}`;
});
</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)">Virtual list</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)">
{{ total.toLocaleString() }} rows
</span>
</div>
<div
v-bind="containerProps"
class="h-64 rounded-xl border border-(--border) bg-(--bg-elevated)"
>
<div v-bind="wrapperProps">
<div
v-for="{ data, index } in list"
:key="index"
class="flex items-center gap-3 border-b border-(--border) px-3"
:style="{ height: `${itemHeight}px` }"
>
<span
class="size-6 shrink-0 rounded-md border border-(--border)"
:style="{ backgroundColor: `hsl(${data.hue} 65% 55%)` }"
/>
<span class="flex-1 truncate font-mono text-sm text-(--fg) tabular-nums">{{ data.label }}</span>
<span class="text-xs text-(--fg-subtle)">idx {{ index }}</span>
</div>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums flex items-center justify-between">
<span class="text-(--fg-muted)">rendered</span>
<span>{{ list.length }} nodes · idx {{ visibleRange }}</span>
</div>
<div class="flex items-end gap-2">
<label class="flex flex-1 flex-col gap-1">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Scroll to index</span>
<input
v-model.number="jumpTo"
type="number"
:min="0"
:max="total - 1"
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>
<button
type="button"
class="inline-flex items-center justify-center gap-1.5 rounded-lg border border-transparent bg-(--accent) px-3 py-2 text-sm font-medium text-(--accent-fg) transition hover:bg-(--accent-hover) active:scale-[0.98] cursor-pointer"
@click="go"
>
Jump
</button>
</div>
</div>
</template>
@@ -0,0 +1,50 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useRenderCount } from './index';
// Increments on mount and on every subsequent re-render of this component.
const renderCount = useRenderCount();
// Reactive state — touching any of these triggers a re-render, bumping the count.
const message = ref('Edit me to force a re-render');
const tint = ref(210);
function nudgeTint() {
tint.value = (tint.value + 40) % 360;
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col items-center gap-2">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Render count</span>
<span
class="font-mono text-3xl font-bold tabular-nums text-(--fg) transition-colors"
:style="{ color: `hsl(${tint} 70% 55%)` }"
>{{ renderCount }}</span>
<span class="text-xs text-(--fg-subtle)">renders since mount</span>
</div>
<label class="flex flex-col gap-1">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Bound input</span>
<input
v-model="message"
type="text"
placeholder="Type to re-render…"
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>
<p class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-sm text-(--fg)">
{{ message }}
</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="nudgeTint"
>
Force re-render (shift color)
</button>
</div>
</template>
@@ -0,0 +1,66 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useRenderInfo } from './index';
// `count` and `duration` are reactive refs; `component` and `lastRendered`
// are captured once at setup (component name/uid and the mount timestamp).
const { component, count, duration, lastRendered } = useRenderInfo();
// Reactive state — mutating it triggers re-renders that update count + duration.
const rows = ref(40);
const grid = computed(() => Array.from({ length: rows.value }, (_, i) => i));
const mountedAt = new Date(lastRendered).toLocaleTimeString();
</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)">Render info</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)">
{{ component ?? 'anonymous' }}
</span>
</div>
<div class="grid grid-cols-2 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ count }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">renders</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ duration.toFixed(2) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">last render ms</div>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums flex items-center justify-between">
<span class="text-(--fg-muted)">mounted at</span>
<span>{{ mountedAt }}</span>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="rows">Render workload</label>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ rows }} cells</span>
</div>
<input
id="rows"
v-model.number="rows"
type="range"
min="1"
max="400"
step="1"
class="w-full accent-(--accent) cursor-pointer"
>
<p class="text-xs text-(--fg-subtle)">Drag to re-render a larger DOM subtree and watch the render duration climb.</p>
</div>
<div class="grid grid-cols-10 gap-1">
<span
v-for="i in grid"
:key="i"
class="aspect-square rounded-sm bg-(--accent-subtle)"
/>
</div>
</div>
</template>
@@ -0,0 +1,82 @@
<script setup lang="ts">
import { ref, useTemplateRef } from 'vue';
import { onElementRemoval } from './index';
const watched = useTemplateRef<HTMLDivElement>('watched');
const mounted = ref(true);
const removals = ref(0);
const lastEvent = ref<string | null>(null);
// Fires whenever the watched element (or any ancestor containing it) leaves the DOM.
onElementRemoval(watched, (records) => {
removals.value++;
lastEvent.value = new Date().toLocaleTimeString();
// `records` are the raw MutationRecords describing the removal.
void records;
});
function toggle() {
mounted.value = !mounted.value;
}
function reset() {
removals.value = 0;
lastEvent.value = null;
}
</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)">DOM removal watcher</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)"
>
<span class="size-1.5 rounded-full transition" :class="mounted ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ mounted ? 'In DOM' : 'Removed' }}
</span>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 min-h-28 flex items-center justify-center">
<div
v-if="mounted"
ref="watched"
class="flex w-full flex-col items-center gap-1 rounded-lg border border-(--accent) bg-(--accent-subtle) px-4 py-6 text-center transition"
>
<span class="text-sm font-medium text-(--accent-text)">Watched element</span>
<span class="text-xs text-(--fg-muted)">Remove me and the callback fires</span>
</div>
<span v-else class="text-sm text-(--fg-subtle)">Element detached from the document</span>
</div>
<div class="grid grid-cols-2 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ removals }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">removals fired</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center flex flex-col justify-center">
<div class="font-mono text-sm font-medium tabular-nums text-(--fg)">{{ lastEvent ?? '—' }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">last fired</div>
</div>
</div>
<div class="flex gap-2">
<button
type="button"
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"
@click="toggle"
>
{{ mounted ? 'Remove element' : 'Mount element' }}
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="removals === 0"
@click="reset"
>
Reset
</button>
</div>
</div>
</template>
@@ -0,0 +1,67 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useActiveElement } from './index';
const activeElement = useActiveElement();
const fields = [
{ id: 'name', label: 'Full name', placeholder: 'Ada Lovelace', type: 'text' },
{ id: 'email', label: 'Email', placeholder: 'ada@analytical.engine', type: 'email' },
{ id: 'city', label: 'City', placeholder: 'London', type: 'text' },
];
const activeId = computed(() => activeElement.value?.id || null);
const activeTag = computed(() => activeElement.value?.tagName.toLowerCase() ?? null);
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="space-y-3">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Focus a field
</p>
<div
v-for="field in fields"
:key="field.id"
class="space-y-1"
>
<label
:for="field.id"
class="text-sm font-medium text-(--fg-muted)"
>{{ field.label }}</label>
<input
:id="field.id"
:type="field.type"
:placeholder="field.placeholder"
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)"
>
</div>
<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"
>
A focusable button
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="flex items-center justify-between gap-3">
<span class="text-(--fg-subtle)">activeElement</span>
<span
v-if="activeTag"
class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-elevated) px-2 py-0.5 text-xs font-medium text-(--accent-text)"
>
&lt;{{ activeTag }}&gt;
</span>
<span
v-else
class="text-xs text-(--fg-subtle)"
>none</span>
</div>
<div class="mt-2 flex items-center justify-between gap-3">
<span class="text-(--fg-subtle)">id</span>
<span class="truncate">{{ activeId ?? '—' }}</span>
</div>
</div>
</div>
</template>
@@ -0,0 +1,58 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useDocumentReadyState } from './index';
const readyState = useDocumentReadyState();
const stages: { state: DocumentReadyState; label: string; hint: string }[] = [
{ state: 'loading', label: 'loading', hint: 'Parsing the document' },
{ state: 'interactive', label: 'interactive', hint: 'DOM ready, assets pending' },
{ state: 'complete', label: 'complete', hint: 'Everything loaded' },
];
const activeIndex = computed(() => stages.findIndex(s => s.state === readyState.value));
</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)">
document.readyState
</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-emerald-500/30 bg-emerald-500/10 px-2 py-0.5 text-xs font-medium text-emerald-600 dark:text-emerald-400">
<span class="size-1.5 rounded-full bg-emerald-500" />
{{ readyState }}
</span>
</div>
<ol class="space-y-2">
<li
v-for="(stage, i) in stages"
:key="stage.state"
class="flex items-center gap-3 rounded-lg border p-3 transition"
:class="i <= activeIndex
? 'border-(--accent) bg-(--accent-subtle)'
: 'border-(--border) bg-(--bg-elevated)'"
>
<span
class="flex size-6 shrink-0 items-center justify-center rounded-full font-mono text-xs font-bold tabular-nums transition"
:class="i < activeIndex
? 'bg-(--accent) text-(--accent-fg)'
: i === activeIndex
? 'bg-(--accent) text-(--accent-fg) ring-4 ring-(--ring)'
: 'bg-(--bg-inset) text-(--fg-subtle)'"
>
{{ i + 1 }}
</span>
<div class="min-w-0">
<p class="font-mono text-sm font-medium text-(--fg)">
{{ stage.label }}
</p>
<p class="text-xs text-(--fg-subtle)">
{{ stage.hint }}
</p>
</div>
</li>
</ol>
</div>
</template>
@@ -0,0 +1,64 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useDocumentVisibility } from './index';
const switches = ref(0);
const lastHidden = ref<string | null>(null);
const visibility = useDocumentVisibility({
onChange: (state) => {
if (state === 'hidden') {
switches.value += 1;
lastHidden.value = new Date().toLocaleTimeString();
}
},
});
const isVisible = computed(() => visibility.value === 'visible');
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col items-center gap-3 text-center">
<span
class="flex size-14 items-center justify-center rounded-full text-2xl transition"
:class="isVisible
? 'bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'bg-amber-500/10 text-amber-600 dark:text-amber-400'"
>
{{ isVisible ? '👁️' : '💤' }}
</span>
<div>
<p class="font-mono text-2xl font-bold tabular-nums text-(--fg)">
{{ visibility }}
</p>
<p class="text-xs text-(--fg-subtle)">
{{ isVisible ? 'This tab is in the foreground' : 'This tab is hidden' }}
</p>
</div>
</div>
<p class="text-center text-xs text-(--fg-subtle)">
Switch to another tab or minimize the window to watch this update.
</p>
<div class="grid grid-cols-2 gap-3">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<p class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ switches }}
</p>
<p class="mt-0.5 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Times hidden
</p>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<p class="font-mono text-sm font-medium tabular-nums text-(--fg) truncate">
{{ lastHidden ?? '—' }}
</p>
<p class="mt-0.5 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Last hidden at
</p>
</div>
</div>
</div>
</template>
@@ -0,0 +1,66 @@
<script setup lang="ts">
import { useTemplateRef } from 'vue';
import { useDraggable } from './index';
const container = useTemplateRef<HTMLElement>('container');
const handle = useTemplateRef<HTMLElement>('handle');
const { x, y, isDragging, style } = useDraggable(
useTemplateRef<HTMLElement>('card'),
{
initialValue: { x: 24, y: 24 },
containerElement: container,
handle,
},
);
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div class="flex items-center justify-between gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Draggable, clamped to container
</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition"
:class="isDragging
? 'border-(--accent) bg-(--accent-subtle) text-(--accent-text)'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
<span
class="size-1.5 rounded-full transition"
:class="isDragging ? 'bg-(--accent)' : 'bg-(--fg-subtle)'"
/>
{{ isDragging ? 'dragging' : 'idle' }}
</span>
</div>
<div
ref="container"
class="relative h-56 w-full overflow-hidden rounded-xl border border-(--border) bg-(--bg-inset)"
>
<div
ref="card"
:style="style"
class="absolute w-36 select-none rounded-lg border border-(--border-strong) bg-(--bg-elevated) shadow-lg"
:class="isDragging ? 'ring-2 ring-(--ring)' : ''"
>
<div
ref="handle"
class="flex items-center gap-1.5 rounded-t-lg border-b border-(--border) bg-(--bg-subtle) px-3 py-2 cursor-grab active:cursor-grabbing"
>
<span class="text-(--fg-subtle)"></span>
<span class="text-xs font-medium text-(--fg-muted)">Drag me</span>
</div>
<div class="p-3 font-mono text-xs tabular-nums text-(--fg)">
<div>x: {{ Math.round(x) }}</div>
<div>y: {{ Math.round(y) }}</div>
</div>
</div>
</div>
<p class="text-center text-xs text-(--fg-subtle)">
Drag from the header. Movement is clamped to the container bounds.
</p>
</div>
</template>
@@ -0,0 +1,86 @@
<script setup lang="ts">
import { computed, useTemplateRef } from 'vue';
import { useDropZone } from './index';
const dropZone = useTemplateRef<HTMLElement>('dropZone');
const { isOverDropZone, files, isSupported } = useDropZone(dropZone, {
dataTypes: ['image/'],
onDrop: (dropped) => {
// eslint-disable-next-line no-console
console.log('dropped', dropped);
},
});
const fileList = computed(() => files.value ?? []);
function formatSize(bytes: number): string {
if (bytes < 1024)
return `${bytes} B`;
if (bytes < 1024 * 1024)
return `${(bytes / 1024).toFixed(1)} KB`;
return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div
v-if="!isSupported"
class="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4 text-center text-sm text-amber-700 dark:text-amber-300"
>
Drag and Drop is not supported in this browser.
</div>
<template v-else>
<div
ref="dropZone"
class="flex flex-col items-center justify-center gap-2 rounded-xl border-2 border-dashed p-8 text-center transition"
:class="isOverDropZone
? 'border-(--accent) bg-(--accent-subtle)'
: 'border-(--border-strong) bg-(--bg-elevated)'"
>
<span class="text-3xl transition" :class="isOverDropZone ? 'scale-110' : ''">
{{ isOverDropZone ? '📥' : '🖼️' }}
</span>
<p class="text-sm font-medium text-(--fg)">
{{ isOverDropZone ? 'Release to drop' : 'Drop image files here' }}
</p>
<p class="text-xs text-(--fg-subtle)">
Only <span class="font-mono">image/*</span> files are accepted
</p>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Dropped files
</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-elevated) px-2 py-0.5 text-xs font-medium text-(--fg-muted) tabular-nums">
{{ fileList.length }}
</span>
</div>
<p
v-if="fileList.length === 0"
class="mt-3 text-center text-sm text-(--fg-subtle)"
>
Nothing dropped yet.
</p>
<ul v-else class="mt-3 space-y-1.5">
<li
v-for="file in fileList"
:key="file.name"
class="flex items-center justify-between gap-3 rounded-md bg-(--bg-elevated) px-2.5 py-1.5"
>
<span class="truncate text-sm text-(--fg)">{{ file.name }}</span>
<span class="shrink-0 font-mono text-xs tabular-nums text-(--fg-subtle)">
{{ formatSize(file.size) }}
</span>
</li>
</ul>
</div>
</template>
</div>
</template>
@@ -0,0 +1,111 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useElementBounding } from './index';
type Timing = 'sync' | 'next-frame';
const timing = ref<Timing>('sync');
const target = ref<HTMLElement>();
// Two independent measurers so toggling the timing mode is visible live.
const sync = useElementBounding(target, { updateTiming: 'sync' });
const nextFrame = useElementBounding(target, { updateTiming: 'next-frame' });
const bounds = computed(() => (timing.value === 'sync' ? sync : nextFrame));
// Resizable, draggable-ish target driven by sliders so every field updates live.
const size = ref(56);
const metrics = computed(() => [
{ label: 'width', value: bounds.value.width.value },
{ label: 'height', value: bounds.value.height.value },
{ label: 'top', value: bounds.value.top.value },
{ label: 'left', value: bounds.value.left.value },
{ label: 'right', value: bounds.value.right.value },
{ label: 'bottom', value: bounds.value.bottom.value },
{ label: 'x', value: bounds.value.x.value },
{ label: 'y', value: bounds.value.y.value },
]);
function fmt(n: number) {
return Math.round(n);
}
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">getBoundingClientRect</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)">
{{ timing }}
</span>
</div>
<!-- The measured target. Resizing it mutates the reactive bounds. -->
<div class="relative h-40 overflow-hidden rounded-lg border border-(--border) bg-(--bg-inset)">
<div
ref="target"
class="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2 grid place-items-center rounded-lg bg-(--accent) text-(--accent-fg) shadow transition-[width,height] duration-150"
:style="{ width: `${size}px`, height: `${size}px` }"
>
<span class="font-mono text-xs font-semibold tabular-nums">{{ fmt(bounds.width.value) }}×{{ fmt(bounds.height.value) }}</span>
</div>
</div>
<div class="grid grid-cols-4 gap-2">
<div
v-for="m in metrics"
:key="m.label"
class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center"
>
<div class="font-mono text-sm font-bold tabular-nums text-(--fg)">{{ fmt(m.value) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">{{ m.label }}</div>
</div>
</div>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="bound-size">Size</label>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ size }}px</span>
</div>
<input
id="bound-size"
v-model.number="size"
type="range"
min="32"
max="140"
step="2"
class="w-full accent-(--accent) cursor-pointer"
>
</div>
<div class="flex items-center gap-2">
<button
v-for="opt in (['sync', 'next-frame'] as Timing[])"
:key="opt"
type="button"
class="flex-1 inline-flex items-center justify-center gap-1.5 rounded-lg border px-3 py-1.5 text-sm font-medium transition active:scale-[0.98] cursor-pointer"
:class="timing === opt
? 'border-transparent bg-(--accent) text-(--accent-fg) hover:bg-(--accent-hover)'
: 'border-(--border) bg-(--bg-elevated) text-(--fg) hover:bg-(--bg-inset) hover:border-(--border-strong)'"
@click="timing = opt"
>
{{ opt }}
</button>
<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="bounds.update()"
>
Update
</button>
</div>
<p class="text-xs text-(--fg-subtle)">
<span class="font-mono">next-frame</span> batches rapid scroll/resize reads into one measurement per animation frame.
</p>
</div>
</template>
@@ -0,0 +1,87 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useElementSize } from './index';
const target = ref<HTMLElement>();
// content-box vs border-box is the headline option, so observe it directly.
const { width, height, stop } = useElementSize(target, { width: 0, height: 0 }, { box: 'border-box' });
const padding = ref(16);
const observing = ref(true);
function toggleObserver() {
if (observing.value) {
stop();
observing.value = false;
}
// Re-observing requires a fresh composable instance; keep the demo honest by
// only offering "stop" once and noting it below.
}
function fmt(n: number) {
return n.toFixed(0);
}
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">ResizeObserver</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)">
<span class="size-1.5 rounded-full" :class="observing ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ observing ? 'Observing' : 'Stopped' }}
</span>
</div>
<!-- Native textarea resize handle makes the element user-resizable. -->
<textarea
ref="target"
readonly
:style="{ padding: `${padding}px` }"
class="w-full min-h-24 resize rounded-lg border border-(--border-strong) bg-(--bg-inset) text-sm leading-relaxed text-(--fg-muted) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>Drag the bottom-right corner to resize me. The width and height update live as the ResizeObserver fires. Border-box sizing includes the padding below.</textarea>
<div class="grid grid-cols-2 gap-3">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ fmt(width) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">width px</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ fmt(height) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">height px</div>
</div>
</div>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="size-padding">Padding (border-box)</label>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ padding }}px</span>
</div>
<input
id="size-padding"
v-model.number="padding"
type="range"
min="0"
max="40"
step="2"
class="w-full accent-(--accent) cursor-pointer"
>
</div>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!observing"
@click="toggleObserver"
>
{{ observing ? 'Stop observing' : 'Observer stopped' }}
</button>
<p class="text-xs text-(--fg-subtle)">
With <span class="font-mono">box: 'border-box'</span> the reported size includes padding, so the slider changes the numbers without resizing the element.
</p>
</div>
</template>
@@ -0,0 +1,79 @@
<script setup lang="ts">
import { ref, watch } from 'vue';
import { useElementVisibility } from './index';
const root = ref<HTMLElement>();
const target = ref<HTMLElement>();
// controls: true returns { isVisible, isSupported, isActive, pause, resume, stop }.
const { isVisible, isActive, pause, resume } = useElementVisibility(target, {
controls: true,
root,
threshold: 0.5,
});
const seenCount = ref(0);
// Count each time the card crosses into view (rising edge only).
watch(isVisible, (visible, was) => {
if (visible && !was)
seenCount.value++;
});
</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)">IntersectionObserver</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition"
:class="isVisible
? '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="size-1.5 rounded-full" :class="isVisible ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ isVisible ? 'In view' : 'Hidden' }}
</span>
</div>
<!-- Scrollable root; the target card sits below the fold until scrolled. -->
<div
ref="root"
class="h-44 overflow-y-auto rounded-xl border border-(--border) bg-(--bg-inset) p-3"
>
<p class="text-sm text-(--fg-subtle)">Scroll down inside this box</p>
<div class="h-40" />
<div
ref="target"
class="rounded-lg border border-(--border) bg-(--accent) p-4 text-center text-(--accent-fg) shadow transition"
:class="isVisible ? 'opacity-100 scale-100' : 'opacity-60 scale-95'"
>
<div class="text-sm font-semibold">Target element</div>
<div class="text-xs opacity-80">at least 50% visible to count</div>
</div>
<div class="h-24" />
<p class="text-sm text-(--fg-subtle)">and back up to hide it again.</p>
</div>
<div class="grid grid-cols-2 gap-3">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ seenCount }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">times seen</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center flex flex-col items-center justify-center">
<div class="text-sm font-semibold" :class="isActive ? 'text-emerald-600 dark:text-emerald-400' : 'text-(--fg-muted)'">
{{ isActive ? 'Active' : 'Paused' }}
</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">observer</div>
</div>
</div>
<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="isActive ? pause() : resume()"
>
{{ isActive ? 'Pause observer' : 'Resume observer' }}
</button>
</div>
</template>
@@ -0,0 +1,85 @@
<script setup lang="ts">
import { defineComponent, h, ref } from 'vue';
import { useFocusGuard } from './index';
// useFocusGuard() returns void: on mount it inserts a pair of invisible,
// focusable sentinel elements at the boundaries of the DOM tree. They keep
// focus order consistent (e.g. for modal/overlay focus management) and are
// removed when the last consumer unmounts.
// Mount the guard through a child so we can toggle it on/off in the demo.
const GuardHost = defineComponent({
name: 'GuardHost',
setup() {
useFocusGuard('demo-guard');
return () => h('span', { class: 'sr-only' }, 'focus guards mounted');
},
});
const enabled = ref(false);
const focused = ref<string | null>(null);
const fields = [
{ id: 'name', label: 'Name', value: 'Ada Lovelace' },
{ id: 'email', label: 'Email', value: 'ada@analytical.engine' },
];
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<component :is="GuardHost" v-if="enabled" />
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Focus guards</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium transition"
:class="enabled
? '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="size-1.5 rounded-full" :class="enabled ? 'bg-emerald-500' : 'bg-(--fg-subtle)'" />
{{ enabled ? 'Mounted' : 'Off' }}
</span>
</div>
<!-- A small focusable form to feel tab order with the guards active. -->
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-3">
<div v-for="f in fields" :key="f.id" class="flex flex-col gap-1">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" :for="f.id">{{ f.label }}</label>
<input
:id="f.id"
:value="f.value"
type="text"
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)"
@focus="focused = f.label"
@blur="focused = null"
>
</div>
<button
type="button"
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"
@focus="focused = 'Submit'"
@blur="focused = null"
>
Submit
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
focused: {{ focused ?? 'nothing' }}
</div>
<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="enabled = !enabled"
>
{{ enabled ? 'Remove focus guards' : 'Mount focus guards' }}
</button>
<p class="text-xs text-(--fg-subtle)">
Guards are invisible <span class="font-mono">tabindex="0"</span> sentinels inserted at the page boundaries. Tab past the last field with them on to feel focus wrap around for overlays and modals.
</p>
</div>
</template>
@@ -0,0 +1,114 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useIntersectionObserver } from './index';
const sections = [
{ id: 'intro', label: 'Introduction', color: 'bg-sky-500' },
{ id: 'install', label: 'Installation', color: 'bg-emerald-500' },
{ id: 'usage', label: 'Usage', color: 'bg-violet-500' },
{ id: 'api', label: 'API Reference', color: 'bg-amber-500' },
];
const root = ref<HTMLElement>();
const itemEls = ref<HTMLElement[]>([]);
// Reactive threshold + rootMargin demonstrate live re-observation.
const threshold = ref(0.5);
// Track which section is currently the most-visible "active" one (scroll-spy).
const ratios = ref<Record<string, number>>({});
useIntersectionObserver(
itemEls,
(entries) => {
for (const entry of entries) {
const id = (entry.target as HTMLElement).dataset.id;
if (id)
ratios.value = { ...ratios.value, [id]: entry.intersectionRatio };
}
},
{
root,
threshold: () => [0, 0.25, 0.5, 0.75, 1],
},
);
const activeId = computed(() => {
let best: string | null = null;
let bestRatio = threshold.value;
for (const s of sections) {
const r = ratios.value[s.id] ?? 0;
if (r >= bestRatio) {
bestRatio = r;
best = s.id;
}
}
return best;
});
</script>
<template>
<div class="w-full max-w-md flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Scroll spy</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)">
active: {{ activeId ?? '—' }}
</span>
</div>
<div class="flex gap-3">
<!-- Nav reflects which section dominates the viewport. -->
<nav class="flex w-32 shrink-0 flex-col gap-1">
<span
v-for="s in sections"
:key="s.id"
class="flex items-center gap-2 rounded-lg border px-2.5 py-1.5 text-xs font-medium transition"
:class="activeId === s.id
? 'border-(--border-strong) bg-(--bg-inset) text-(--fg)'
: 'border-transparent text-(--fg-muted)'"
>
<span class="size-2 rounded-full transition" :class="[s.color, activeId === s.id ? 'opacity-100' : 'opacity-30']" />
{{ s.label }}
</span>
</nav>
<!-- Scrollable content; each section is an observed target. -->
<div
ref="root"
class="h-56 flex-1 overflow-y-auto rounded-xl border border-(--border) bg-(--bg-inset) p-3 flex flex-col gap-3 scroll-smooth"
>
<section
v-for="s in sections"
:key="s.id"
ref="itemEls"
:data-id="s.id"
class="rounded-lg border border-(--border) bg-(--bg-elevated) p-4 transition"
:class="activeId === s.id ? 'ring-2 ring-(--ring)' : ''"
>
<h3 class="text-sm font-semibold text-(--fg)">{{ s.label }}</h3>
<p class="mt-1 text-xs text-(--fg-subtle)">
Visibility: {{ Math.round((ratios[s.id] ?? 0) * 100) }}%
</p>
<div class="mt-2 h-16 rounded bg-(--bg-inset)" />
</section>
</div>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between">
<label class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)" for="io-threshold">Active threshold</label>
<span class="font-mono text-xs tabular-nums text-(--fg-muted)">{{ Math.round(threshold * 100) }}%</span>
</div>
<input
id="io-threshold"
v-model.number="threshold"
type="range"
min="0.1"
max="0.9"
step="0.1"
class="w-full accent-(--accent) cursor-pointer"
>
<p class="text-xs text-(--fg-subtle)">A section becomes active once at least this much of it is visible inside the scroll root.</p>
</div>
</div>
</template>
@@ -0,0 +1,144 @@
<script setup lang="ts">
import { ref, shallowRef, useTemplateRef } from 'vue';
import { useMutationObserver } from './index';
const target = useTemplateRef<HTMLElement>('target');
// Mutable state that drives the observed element so changes are visible.
const labels = ref(['Inbox', 'Drafts', 'Archive']);
const accent = ref(false);
const fontSize = ref(14);
const mutationCount = shallowRef(0);
const lastType = shallowRef<MutationRecordType | ''>('—');
const log = ref<string[]>([]);
const { isSupported, isActive, pause, resume } = useMutationObserver(
target,
(records) => {
for (const record of records) {
mutationCount.value++;
lastType.value = record.type;
let detail = record.type as string;
if (record.type === 'attributes')
detail = `attribute "${record.attributeName}"`;
else if (record.type === 'childList')
detail = `children +${record.addedNodes.length} ${record.removedNodes.length}`;
log.value.unshift(detail);
if (log.value.length > 5)
log.value.pop();
}
},
{ attributes: true, childList: true, subtree: true, attributeFilter: ['style', 'class'] },
);
function addLabel() {
const pool = ['Spam', 'Sent', 'Starred', 'Trash', 'Snoozed', 'Important'];
labels.value.push(pool[labels.value.length % pool.length]);
}
function removeLabel() {
labels.value.pop();
}
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">MutationObserver</span>
<span class="inline-flex items-center gap-1.5 rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)">
<span class="size-1.5 rounded-full transition" :class="isActive ? 'bg-emerald-500' : 'bg-amber-500'" />
{{ isActive ? 'Observing' : 'Paused' }}
</span>
</div>
<p v-if="!isSupported" class="rounded-lg border border-amber-500/30 bg-amber-500/10 p-3 text-sm text-amber-600 dark:text-amber-400">
MutationObserver is not supported in this browser.
</p>
<template v-else>
<!-- Observed subtree: every attribute/child change fires the callback -->
<div
ref="target"
class="rounded-xl border p-4 transition"
:class="accent ? 'border-(--accent) bg-(--accent-subtle)' : 'border-(--border) bg-(--bg-elevated)'"
:style="{ fontSize: `${fontSize}px` }"
>
<div class="mb-2 text-xs font-medium uppercase tracking-wide" :class="accent ? 'text-(--accent-text)' : 'text-(--fg-subtle)'">
Observed element
</div>
<div class="flex flex-wrap gap-1.5">
<span
v-for="(label, i) in labels"
:key="`${label}-${i}`"
class="inline-flex items-center rounded-md border border-(--border) bg-(--bg-inset) px-2 py-0.5 text-xs font-medium text-(--fg-muted)"
>
{{ label }}
</span>
<span v-if="!labels.length" class="text-xs text-(--fg-subtle)">No labels</span>
</div>
</div>
<div class="grid grid-cols-2 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ mutationCount }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">mutations</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="truncate font-mono text-sm font-bold text-(--fg)">{{ lastType }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">last record type</div>
</div>
</div>
<div class="grid grid-cols-2 gap-2">
<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="addLabel"
>
Add child
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="!labels.length"
@click="removeLabel"
>
Remove child
</button>
<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="accent = !accent"
>
Toggle class
</button>
<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="fontSize = fontSize === 14 ? 18 : 14"
>
Toggle style
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<div class="mb-1.5 text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Recent records</div>
<ul v-if="log.length" class="flex flex-col gap-1 font-mono text-xs text-(--fg)">
<li v-for="(entry, i) in log" :key="i" class="truncate">{{ entry }}</li>
</ul>
<p v-else class="font-mono text-xs text-(--fg-subtle)">Mutate the element above to record changes.</p>
</div>
<button
type="button"
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"
@click="isActive ? pause() : resume()"
>
{{ isActive ? 'Pause observer' : 'Resume observer' }}
</button>
</template>
</div>
</template>
@@ -0,0 +1,98 @@
<script setup lang="ts">
import { computed, ref, useTemplateRef } from 'vue';
import { useParentElement } from './index';
const child = useTemplateRef<HTMLElement>('child');
// useParentElement returns a read-only shallow ref of the element's parent.
const parent = useParentElement(child);
// Reparent the child between two wrappers to watch the resolved parent change.
const inSecond = ref(false);
const parentInfo = computed(() => {
const el = parent.value;
if (!el)
return null;
return {
tag: el.tagName.toLowerCase(),
id: el.id || '—',
classes: el.className || '—',
width: Math.round(el.getBoundingClientRect().width),
height: Math.round(el.getBoundingClientRect().height),
};
});
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">parentElement</span>
<!-- Two candidate parents; the child is teleported between them via v-if -->
<div class="flex flex-col gap-3">
<div
id="wrapper-a"
class="rounded-xl border border-dashed p-3 transition"
:class="!inSecond ? 'border-(--accent) bg-(--accent-subtle)' : 'border-(--border) bg-(--bg-elevated)'"
>
<div class="mb-2 text-xs font-medium uppercase tracking-wide" :class="!inSecond ? 'text-(--accent-text)' : 'text-(--fg-subtle)'">
#wrapper-a
</div>
<div
v-if="!inSecond"
ref="child"
class="rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2 text-sm font-medium text-(--fg)"
>
Tracked child
</div>
<div v-else class="text-xs text-(--fg-subtle)">empty</div>
</div>
<div
id="wrapper-b"
class="rounded-xl border border-dashed p-3 transition"
:class="inSecond ? 'border-(--accent) bg-(--accent-subtle)' : 'border-(--border) bg-(--bg-elevated)'"
>
<div class="mb-2 text-xs font-medium uppercase tracking-wide" :class="inSecond ? 'text-(--accent-text)' : 'text-(--fg-subtle)'">
#wrapper-b
</div>
<div
v-if="inSecond"
ref="child"
class="rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2 text-sm font-medium text-(--fg)"
>
Tracked child
</div>
<div v-else class="text-xs text-(--fg-subtle)">empty</div>
</div>
</div>
<button
type="button"
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"
@click="inSecond = !inSecond"
>
Move child to #wrapper-{{ inSecond ? 'a' : 'b' }}
</button>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<div class="mb-2 font-sans text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Resolved parent</div>
<template v-if="parentInfo">
<div class="flex justify-between gap-2">
<span class="text-(--fg-subtle)">tag</span>
<span class="text-(--accent-text)">&lt;{{ parentInfo.tag }}&gt;</span>
</div>
<div class="flex justify-between gap-2">
<span class="text-(--fg-subtle)">id</span>
<span class="truncate">{{ parentInfo.id }}</span>
</div>
<div class="flex justify-between gap-2">
<span class="text-(--fg-subtle)">size</span>
<span>{{ parentInfo.width }} × {{ parentInfo.height }}</span>
</div>
</template>
<div v-else class="font-sans text-xs text-(--fg-subtle)">Resolving parent on the client</div>
</div>
</div>
</template>
@@ -0,0 +1,80 @@
<script setup lang="ts">
import { reactive, shallowRef, useTemplateRef } from 'vue';
import { useResizeObserver } from './index';
const target = useTemplateRef<HTMLElement>('target');
const size = reactive({ width: 0, height: 0 });
const callbacks = shallowRef(0);
const { isSupported, isActive, pause, resume } = useResizeObserver(
target,
([entry]) => {
if (!entry)
return;
const { width, height } = entry.contentRect;
size.width = Math.round(width);
size.height = Math.round(height);
callbacks.value++;
},
);
</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)">ResizeObserver</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)">
<span class="size-1.5 rounded-full transition" :class="isActive ? 'bg-emerald-500' : 'bg-amber-500'" />
{{ isActive ? 'Observing' : 'Paused' }}
</span>
</div>
<p v-if="!isSupported" class="rounded-lg border border-amber-500/30 bg-amber-500/10 p-3 text-sm text-amber-600 dark:text-amber-400">
ResizeObserver is not supported in this browser.
</p>
<template v-else>
<!-- Drag the bottom-right handle to resize; the observer reports new dimensions -->
<div
ref="target"
class="relative grid min-h-32 min-w-40 max-w-full resize overflow-auto rounded-xl border border-(--border) bg-(--bg-elevated) p-4 place-items-center"
style="width: 16rem; height: 8rem;"
>
<div class="pointer-events-none select-none text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ size.width }}<span class="text-(--fg-subtle)"> × </span>{{ size.height }}
</div>
<div class="mt-1 text-xs text-(--fg-subtle)">drag the bottom-right corner</div>
</div>
</div>
<div class="grid grid-cols-3 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center">
<div class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ size.width }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">width px</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center">
<div class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ size.height }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">height px</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-2 text-center">
<div class="font-mono text-lg font-bold tabular-nums text-(--fg)">{{ callbacks }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">callbacks</div>
</div>
</div>
<button
type="button"
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"
@click="isActive ? pause() : resume()"
>
{{ isActive ? 'Pause observer' : 'Resume observer' }}
</button>
<p class="text-xs text-(--fg-subtle)">
While paused, resizing won't update the readout until you resume.
</p>
</template>
</div>
</template>
@@ -0,0 +1,53 @@
<script setup lang="ts">
import { ref, watch } from 'vue';
import { useWindowFocus } from './index';
// useWindowFocus returns a single ShallowRef<boolean> — bind it directly.
const focused = useWindowFocus();
const blurCount = ref(0);
watch(focused, (isFocused) => {
if (!isFocused)
blurCount.value++;
});
</script>
<template>
<div class="w-full max-w-sm flex flex-col gap-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Window focus</span>
<div
class="rounded-xl border p-6 text-center transition"
:class="focused
? 'border-emerald-500/30 bg-emerald-500/10'
: 'border-(--border) bg-(--bg-inset)'"
>
<div
class="mx-auto flex size-14 items-center justify-center rounded-full transition"
:class="focused
? 'bg-emerald-500/15 text-emerald-600 dark:text-emerald-400'
: 'bg-(--bg-elevated) text-(--fg-subtle)'"
>
<span class="size-3 rounded-full transition" :class="focused ? 'bg-emerald-500 animate-pulse' : 'bg-(--fg-subtle)'" />
</div>
<div class="mt-3 text-lg font-semibold text-(--fg)">
{{ focused ? 'Window focused' : 'Window blurred' }}
</div>
<p class="mt-1 text-sm text-(--fg-muted)">
{{ focused ? 'Click outside or switch apps to blur.' : 'Click back into this window to refocus.' }}
</p>
</div>
<div class="grid grid-cols-2 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ focused ? 'on' : 'off' }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">focused</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ blurCount }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">times blurred</div>
</div>
</div>
</div>
</template>
@@ -0,0 +1,112 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useWindowScroll } from './index';
const { x, y, isScrolling, arrivedState, directions, measure } = useWindowScroll({
behavior: 'smooth',
});
const verticalDirection = computed(() => {
if (directions.bottom)
return 'down';
if (directions.top)
return 'up';
return 'idle';
});
function scrollToTop() {
y.value = 0;
}
function scrollToBottom() {
// Writing past the max is clamped by the browser, taking us to the bottom.
y.value = 1_000_000;
}
</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)">Window scroll</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)">
<span class="size-1.5 rounded-full transition" :class="isScrolling ? 'bg-emerald-500 animate-pulse' : 'bg-(--fg-subtle)'" />
{{ isScrolling ? 'Scrolling' : 'Idle' }}
</span>
</div>
<div class="grid grid-cols-2 gap-2">
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ Math.round(x) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">scroll x</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center">
<div class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ Math.round(y) }}</div>
<div class="text-[10px] uppercase tracking-wide text-(--fg-subtle)">scroll y</div>
</div>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 flex flex-col gap-3">
<div class="flex items-center justify-between">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Direction</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)">
{{ verticalDirection }}
</span>
</div>
<div class="flex flex-col gap-2">
<div class="flex items-center justify-between text-sm">
<span class="text-(--fg-muted)">Arrived at top</span>
<span
class="inline-flex items-center gap-1.5 rounded-md px-2 py-0.5 text-xs font-medium"
:class="arrivedState.top
? 'bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'bg-(--bg-inset) text-(--fg-subtle)'"
>
{{ arrivedState.top ? 'yes' : 'no' }}
</span>
</div>
<div class="flex items-center justify-between text-sm">
<span class="text-(--fg-muted)">Arrived at bottom</span>
<span
class="inline-flex items-center gap-1.5 rounded-md px-2 py-0.5 text-xs font-medium"
:class="arrivedState.bottom
? 'bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'bg-(--bg-inset) text-(--fg-subtle)'"
>
{{ arrivedState.bottom ? 'yes' : 'no' }}
</span>
</div>
</div>
</div>
<div class="grid grid-cols-2 gap-2">
<button
type="button"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="arrivedState.top"
@click="scrollToTop"
>
Scroll to top
</button>
<button
type="button"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="arrivedState.bottom"
@click="scrollToBottom"
>
Scroll to bottom
</button>
</div>
<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="measure"
>
Re-measure
</button>
<p class="text-xs text-(--fg-subtle)">
Scroll the documentation page to watch the position and arrived edges update live.
</p>
</div>
</template>
@@ -0,0 +1,70 @@
<script setup lang="ts">
import { computed } from 'vue';
import { useWindowSize } from './index';
const { width, height } = useWindowSize();
const orientation = computed(() => (width.value >= height.value ? 'landscape' : 'portrait'));
const aspect = computed(() => (height.value === 0 ? '' : (width.value / height.value).toFixed(2)));
const ratioPercent = computed(() => {
const total = width.value + height.value;
return total === 0 ? 50 : Math.round((width.value / total) * 100);
});
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="grid grid-cols-2 gap-3">
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 text-center">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Width
</p>
<p class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ width }}
</p>
<p class="text-xs text-(--fg-subtle)">
px
</p>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4 text-center">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Height
</p>
<p class="font-mono text-3xl font-bold tabular-nums text-(--fg)">
{{ height }}
</p>
<p class="text-xs text-(--fg-subtle)">
px
</p>
</div>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div
class="relative flex items-center justify-center overflow-hidden rounded-lg border border-(--border-strong) bg-(--bg-inset) transition-all"
:style="{ aspectRatio: `${Math.max(width, 1)} / ${Math.max(height, 1)}` }"
>
<div
class="absolute inset-y-0 left-0 bg-(--accent-subtle) transition-all"
:style="{ width: `${ratioPercent}%` }"
/>
<span class="relative font-mono text-xs text-(--fg-muted) tabular-nums">
{{ width }} × {{ height }}
</span>
</div>
</div>
<div class="flex flex-wrap items-center justify-center gap-2">
<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)">
{{ orientation }}
</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)">
ratio {{ aspect }}
</span>
</div>
<p class="text-center text-xs text-(--fg-subtle)">
Resize your browser window to watch the values update live.
</p>
</div>
</template>
@@ -0,0 +1,102 @@
<script setup lang="ts">
import { useField } from './index';
// Standalone mode: no useForm() ancestor, so the field owns its own value,
// errors, touched state, and validation.
const {
value,
errorMessage,
meta,
attrs,
validate,
reset,
} = useField<string>('email', {
initialValue: 'ada@example',
validateOn: 'value',
validate: (input) => {
if (!input)
return 'Email is required';
if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(input))
return 'Enter a valid email address';
return true;
},
});
const inputClass = 'w-full rounded-lg border bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:outline-none focus:ring-2 focus:ring-(--ring)';
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex flex-col gap-1.5">
<label
class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)"
:for="attrs.name"
>
Email address
</label>
<input
:id="attrs.name"
v-model="value"
v-bind="attrs"
type="email"
placeholder="you@example.com"
:class="[
inputClass,
meta.touched.value && errorMessage
? 'border-red-500/60 focus:border-red-500'
: 'border-(--border) focus:border-(--accent)',
]"
>
<p
v-if="meta.touched.value && errorMessage"
class="text-xs text-red-600 dark:text-red-400"
>
{{ errorMessage }}
</p>
<p
v-else
class="text-xs text-(--fg-subtle)"
>
Validates on every keystroke.
</p>
</div>
<div class="flex flex-wrap gap-2">
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="meta.valid.value
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-red-500/30 bg-red-500/10 text-red-600 dark:text-red-400'"
>
{{ meta.valid.value ? 'valid' : 'invalid' }}
</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)">
dirty: {{ meta.dirty.value }}
</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)">
touched: {{ meta.touched.value }}
</span>
</div>
<div class="flex gap-2">
<button
type="button"
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"
@click="validate()"
>
Validate
</button>
<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
</button>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
value: "{{ value }}"
</div>
</div>
</template>
@@ -0,0 +1,122 @@
<script setup lang="ts">
import { useForm } from '../useForm';
import { useFieldArray } from './index';
interface Task {
title: string;
done: boolean;
}
// useFieldArray needs a form. We pass it explicitly via the `form` option so
// the demo works as a single self-contained component.
const form = useForm<{ tasks: Task[] }>({
initialValues: {
tasks: [
{ title: 'Sketch wireframes', done: true },
{ title: 'Wire up the API', done: false },
{ title: 'Write release notes', done: false },
],
},
});
const { fields, push, remove, move, swap } = useFieldArray<Task>('tasks', { form });
function addTask(): void {
push({ title: '', done: false });
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-3">
<div class="flex items-center justify-between">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Tasks ({{ fields.length }})
</p>
<button
type="button"
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"
@click="addTask"
>
+ Add task
</button>
</div>
<TransitionGroup
tag="ul"
class="flex flex-col gap-2"
enter-active-class="transition duration-200 ease-out"
enter-from-class="opacity-0 -translate-y-1"
leave-active-class="transition duration-150 ease-in absolute"
leave-to-class="opacity-0 translate-x-2"
>
<li
v-for="(field, index) in fields"
:key="field.key"
class="flex items-center gap-2 rounded-xl border border-(--border) bg-(--bg-elevated) p-2"
>
<input
v-model="field.value.value.done"
type="checkbox"
class="size-4 shrink-0 cursor-pointer accent-(--accent)"
aria-label="Mark done"
>
<input
v-model="field.value.value.title"
type="text"
placeholder="Describe the task…"
class="min-w-0 flex-1 rounded-lg border border-(--border) bg-(--bg) px-3 py-1.5 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
:class="field.value.value.done ? 'line-through text-(--fg-subtle)' : ''"
>
<div class="flex shrink-0 items-center gap-1">
<button
type="button"
:disabled="field.isFirst"
class="inline-flex size-7 items-center justify-center rounded-md border border-(--border) bg-(--bg-elevated) text-(--fg-muted) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.95] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
aria-label="Move up"
@click="move(index, index - 1)"
>
</button>
<button
type="button"
:disabled="field.isLast"
class="inline-flex size-7 items-center justify-center rounded-md border border-(--border) bg-(--bg-elevated) text-(--fg-muted) transition hover:bg-(--bg-inset) hover:border-(--border-strong) active:scale-[0.95] cursor-pointer disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
aria-label="Move down"
@click="move(index, index + 1)"
>
</button>
<button
type="button"
class="inline-flex size-7 items-center justify-center rounded-md border border-red-500/30 bg-red-500/10 text-red-600 transition hover:bg-red-500/20 active:scale-[0.95] cursor-pointer dark:text-red-400"
aria-label="Remove"
@click="remove(index)"
>
×
</button>
</div>
</li>
</TransitionGroup>
<div
v-if="fields.length === 0"
class="rounded-xl border border-dashed border-(--border) bg-(--bg-inset) p-6 text-center text-sm text-(--fg-subtle)"
>
No tasks yet. Add one to get started.
</div>
<div class="flex items-center justify-between border-t border-(--border) pt-3">
<span class="text-xs text-(--fg-subtle)">
Stable keys survive reorders
</span>
<button
type="button"
:disabled="fields.length < 2"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
@click="swap(0, fields.length - 1)"
>
Swap first last
</button>
</div>
</div>
</template>
@@ -0,0 +1,153 @@
<script setup lang="ts">
import { ref } from 'vue';
import { useForm } from './index';
import type { FormErrors } from './index';
interface SignUp {
name: string;
email: string;
age: number;
}
const submitted = ref<SignUp | null>(null);
const {
errors,
meta,
isSubmitting,
submitCount,
defineField,
handleSubmit,
resetForm,
} = useForm<SignUp>({
initialValues: { name: '', email: '', age: 18 },
validateOn: 'blur',
revalidateOn: 'value',
// A custom resolver — no external schema library needed.
resolver: (values) => {
const errs: FormErrors = {};
if (!values.name.trim())
errs.name = ['Name is required'];
if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(values.email))
errs.email = ['Enter a valid email'];
if (values.age < 18)
errs.age = ['Must be 18 or older'];
return { errors: errs, values };
},
});
const [name, nameProps] = defineField('name');
const [email, emailProps] = defineField('email');
const [age, ageProps] = defineField('age');
const onSubmit = handleSubmit(async (values) => {
await new Promise(resolve => setTimeout(resolve, 600));
submitted.value = { ...values };
});
const baseInput = 'w-full rounded-lg border bg-(--bg) px-3 py-2 text-sm text-(--fg) placeholder:text-(--fg-subtle) transition focus:outline-none focus:ring-2 focus:ring-(--ring)';
function cls(path: keyof SignUp): string {
return errors[path]?.length
? `${baseInput} border-red-500/60 focus:border-red-500`
: `${baseInput} border-(--border) focus:border-(--accent)`;
}
</script>
<template>
<form
class="flex w-full max-w-sm flex-col gap-4"
novalidate
@submit.prevent="onSubmit"
>
<div class="flex flex-col gap-1.5">
<label for="uf-name" class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Name</label>
<input
id="uf-name"
v-model="name"
v-bind="nameProps"
:class="cls('name')"
placeholder="Ada Lovelace"
>
<p v-if="errors.name?.length" class="text-xs text-red-600 dark:text-red-400">
{{ errors.name[0] }}
</p>
</div>
<div class="flex flex-col gap-1.5">
<label for="uf-email" class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Email</label>
<input
id="uf-email"
v-model="email"
v-bind="emailProps"
type="email"
:class="cls('email')"
placeholder="ada@example.com"
>
<p v-if="errors.email?.length" class="text-xs text-red-600 dark:text-red-400">
{{ errors.email[0] }}
</p>
</div>
<div class="flex flex-col gap-1.5">
<label for="uf-age" class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Age</label>
<input
id="uf-age"
v-model.number="age"
v-bind="ageProps"
type="number"
:class="cls('age')"
>
<p v-if="errors.age?.length" class="text-xs text-red-600 dark:text-red-400">
{{ errors.age[0] }}
</p>
</div>
<div class="flex flex-wrap gap-2">
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="meta.valid
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
{{ meta.valid ? 'valid' : 'invalid' }}
</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)">
dirty: {{ meta.dirty }}
</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)">
submits: {{ submitCount }}
</span>
</div>
<div class="flex gap-2">
<button
type="submit"
:disabled="isSubmitting"
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"
>
{{ isSubmitting ? 'Submitting…' : 'Create account' }}
</button>
<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="resetForm(); submitted = null"
>
Reset
</button>
</div>
<div
v-if="submitted"
class="rounded-lg border border-emerald-500/30 bg-emerald-500/10 p-3 font-mono text-xs text-emerald-700 dark:text-emerald-300"
>
<p class="mb-1 font-semibold not-italic">
Submitted
</p>
<pre class="whitespace-pre-wrap">{{ JSON.stringify(submitted, null, 2) }}</pre>
</div>
<p v-else class="text-center text-xs text-(--fg-subtle)">
Validates on blur, then live on every change.
</p>
</form>
</template>
@@ -0,0 +1,91 @@
<script setup lang="ts">
import { defineComponent, h } from 'vue';
import { useForm } from '../useForm';
import { useFormContext } from './index';
interface Profile {
username: string;
bio: string;
}
// A descendant "field" component that reaches the form purely through context —
// it receives no props and is never told which form it belongs to.
const ContextField = defineComponent({
props: {
path: { type: String, required: true },
label: { type: String, required: true },
multiline: { type: Boolean, default: false },
},
setup(props) {
const form = useFormContext<Profile>();
// Graceful standalone behaviour when no form ancestor is present.
if (!form) {
return () =>
h('p', { class: 'text-xs text-amber-600 dark:text-amber-400' }, 'No form context found.');
}
const tag = props.multiline ? 'textarea' : 'input';
const inputClass
= '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)';
return () =>
h('div', { class: 'flex flex-col gap-1.5' }, [
h(
'label',
{ class: 'text-xs font-medium uppercase tracking-wide text-(--fg-subtle)' },
props.label,
),
h(tag, {
'class': inputClass,
'rows': props.multiline ? 2 : undefined,
'value': form.getFieldValue(props.path as keyof Profile),
'aria-invalid': form.getErrors(props.path as keyof Profile).length > 0 || undefined,
'onInput': (event: Event) =>
form.setFieldValue(
props.path as keyof Profile,
(event.target as HTMLInputElement).value,
{ shouldTouch: true },
),
}),
]);
},
});
const form = useForm<Profile>({
initialValues: { username: 'grace', bio: 'Compiler pioneer.' },
});
const { values, meta, isDirty } = form;
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex flex-col gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<p class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">
Profile (fields read context, not props)
</p>
<ContextField path="username" label="Username" />
<ContextField path="bio" label="Bio" multiline />
</div>
<div class="flex flex-wrap gap-2">
<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)">
dirty: {{ isDirty }}
</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)">
touched: {{ meta.touched }}
</span>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-xs text-(--fg)">
<p class="mb-1 text-(--fg-subtle)">
Shared form values:
</p>
<pre class="whitespace-pre-wrap">{{ JSON.stringify(values, null, 2) }}</pre>
</div>
<p class="text-center text-xs text-(--fg-subtle)">
Both inputs are nested children that locate the form via useFormContext().
</p>
</div>
</template>
@@ -0,0 +1,76 @@
<script setup lang="ts">
import { ref } from 'vue';
import { tryOnBeforeMount } from './index';
interface LogEntry {
id: number;
label: string;
phase: 'before-mount' | 'setup';
}
let seq = 0;
const log = ref<LogEntry[]>([]);
const order = ref<string[]>([]);
function push(label: string, phase: LogEntry['phase']) {
log.value.push({ id: ++seq, label, phase });
order.value.push(label);
}
// A marker we drop synchronously in setup so the relative ordering is visible.
push('setup body ran', 'setup');
// Synchronous hook: registers via onBeforeMount because we are inside a component.
tryOnBeforeMount(() => push('sync callback (onBeforeMount)', 'before-mount'));
// Async hook: deferred to the next tick.
tryOnBeforeMount(() => push('async callback (nextTick)', 'before-mount'), { sync: false });
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex flex-col gap-1">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">tryOnBeforeMount</span>
<p class="text-sm text-(--fg-muted)">
Registers a callback on <code class="font-mono text-(--fg)">onBeforeMount</code> when inside a component,
otherwise calls it directly. Watch the execution order below.
</p>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Execution timeline</span>
<ol class="mt-3 flex flex-col gap-2">
<li
v-for="(entry, index) in log"
:key="entry.id"
class="flex items-center gap-3"
>
<span
class="inline-flex h-6 w-6 shrink-0 items-center justify-center rounded-md border border-(--border) bg-(--bg-inset) font-mono text-xs font-medium text-(--fg-muted) tabular-nums"
>
{{ index + 1 }}
</span>
<span class="text-sm text-(--fg)">{{ entry.label }}</span>
<span
class="ml-auto inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="entry.phase === 'before-mount'
? 'border-sky-500/30 bg-sky-500/10 text-sky-600 dark:text-sky-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-muted)'"
>
{{ entry.phase }}
</span>
</li>
</ol>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 font-mono text-sm text-(--fg) tabular-nums">
<span class="text-(--fg-subtle)">order:</span> [{{ order.join(' → ') }}]
</div>
<p class="text-xs text-(--fg-subtle)">
The sync callback fires during the component's before-mount phase; the async one is queued to the next tick,
so it always lands last.
</p>
</div>
</template>
@@ -0,0 +1,76 @@
<script setup lang="ts">
import { ref } from 'vue';
import { tryOnMounted } from './index';
interface LogEntry {
id: number;
label: string;
at: number;
}
let seq = 0;
const start = Date.now();
const log = ref<LogEntry[]>([]);
const mounted = ref(false);
function push(label: string) {
log.value.push({ id: ++seq, label, at: Date.now() - start });
}
// Marker dropped synchronously while setup runs — before the DOM exists.
push('setup body executed');
// Sync callback: registered through onMounted because we're inside a component.
tryOnMounted(() => {
mounted.value = true;
push('sync callback (onMounted)');
});
// Async callback: deferred to the next tick, runs after the sync one.
tryOnMounted(() => push('async callback (nextTick)'), { sync: false });
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex items-center justify-between gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">tryOnMounted</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="mounted
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'"
>
<span
class="h-1.5 w-1.5 rounded-full"
:class="mounted ? 'bg-emerald-500' : 'bg-amber-500'"
/>
{{ mounted ? 'mounted' : 'pending' }}
</span>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Mount timeline</span>
<ol class="mt-3 flex flex-col gap-2">
<li
v-for="(entry, index) in log"
:key="entry.id"
class="flex items-center gap-3"
>
<span
class="inline-flex h-6 w-6 shrink-0 items-center justify-center rounded-md border border-(--border) bg-(--bg-inset) font-mono text-xs font-medium text-(--fg-muted) tabular-nums"
>
{{ index + 1 }}
</span>
<span class="text-sm text-(--fg)">{{ entry.label }}</span>
<span class="ml-auto font-mono text-xs text-(--fg-subtle) tabular-nums">+{{ entry.at }}ms</span>
</li>
</ol>
</div>
<p class="text-xs text-(--fg-subtle)">
Both callbacks are safely deferred until the component is mounted. The async variant is queued one extra tick,
so it consistently runs after the synchronous one.
</p>
</div>
</template>
@@ -0,0 +1,137 @@
<script setup lang="ts">
import { effectScope, ref } from 'vue';
import { tryOnScopeDispose } from './index';
interface LogEntry {
id: number;
label: string;
kind: 'create' | 'dispose' | 'noop';
}
let seq = 0;
const log = ref<LogEntry[]>([]);
const activeScopes = ref(0);
function push(label: string, kind: LogEntry['kind']) {
log.value.unshift({ id: ++seq, label, kind });
}
let current: ReturnType<typeof effectScope> | null = null;
// Create a fresh effect scope and register a dispose hook inside it.
function createScope() {
const id = activeScopes.value + 1;
const scope = effectScope();
scope.run(() => {
const registered = tryOnScopeDispose(() => {
activeScopes.value--;
push(`scope #${id} disposed → cleanup ran`, 'dispose');
});
push(
registered
? `scope #${id} created → hook registered`
: `scope #${id} created → no active scope (skipped)`,
registered ? 'create' : 'noop',
);
});
// Stop any previously open scope first so only one is live at a time.
current?.stop();
current = scope;
activeScopes.value = 1;
}
function disposeScope() {
current?.stop();
current = null;
}
// Demonstrates the graceful fallback: outside any scope it returns false.
function callOutsideScope() {
const registered = tryOnScopeDispose(() => {});
push(
registered
? 'unexpected: registered outside a scope'
: 'called outside scope → returned false (no-op)',
'noop',
);
}
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex items-center justify-between gap-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">tryOnScopeDispose</span>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2 py-0.5 text-xs font-medium"
:class="activeScopes > 0
? '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="activeScopes > 0 ? 'bg-emerald-500' : 'bg-(--fg-subtle)'"
/>
{{ activeScopes > 0 ? 'scope active' : 'no scope' }}
</span>
</div>
<div class="grid grid-cols-3 gap-2">
<button
type="button"
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"
@click="createScope"
>
Create scope
</button>
<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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
:disabled="activeScopes === 0"
@click="disposeScope"
>
Dispose
</button>
<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="callOutsideScope"
>
Outside
</button>
</div>
<div class="rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Event log</span>
<ul v-if="log.length" class="mt-3 flex flex-col gap-2">
<li
v-for="entry in log"
:key="entry.id"
class="flex items-center gap-2.5 text-sm"
>
<span
class="h-1.5 w-1.5 shrink-0 rounded-full"
:class="{
'bg-emerald-500': entry.kind === 'create',
'bg-rose-500': entry.kind === 'dispose',
'bg-(--fg-subtle)': entry.kind === 'noop',
}"
/>
<span class="text-(--fg)">{{ entry.label }}</span>
</li>
</ul>
<p v-else class="mt-3 text-sm text-(--fg-subtle)">
Create a scope to register a cleanup hook, then dispose it to watch the callback fire.
</p>
</div>
<p class="text-xs text-(--fg-subtle)">
Inside an active effect scope the cleanup is registered and runs on disposal. Called with no scope present, it
simply returns <code class="font-mono text-(--fg)">false</code> instead of throwing.
</p>
</div>
</template>
@@ -0,0 +1,50 @@
<script setup lang="ts">
import { useMounted } from './index';
// A readonly ref that flips to true once the component is mounted.
const isMounted = useMounted();
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex flex-col gap-1">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">useMounted</span>
<p class="text-sm text-(--fg-muted)">
Tracks whether the component has finished mounting handy for SSR-safe rendering and entry animations.
</p>
</div>
<div class="flex items-center justify-between rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex flex-col gap-0.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">isMounted</span>
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ isMounted }}</span>
</div>
<span
class="inline-flex items-center gap-1.5 rounded-md border px-2.5 py-1 text-xs font-medium transition"
:class="isMounted
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-amber-500/30 bg-amber-500/10 text-amber-600 dark:text-amber-400'"
>
<span
class="h-1.5 w-1.5 rounded-full"
:class="isMounted ? 'bg-emerald-500' : 'bg-amber-500'"
/>
{{ isMounted ? 'mounted' : 'mounting…' }}
</span>
</div>
<!-- Mount-gated reveal: only animates in once the client takes over. -->
<div
class="overflow-hidden rounded-lg border border-(--border) bg-(--bg-inset) p-4 transition-all duration-500 ease-out"
:class="isMounted ? 'translate-y-0 opacity-100' : 'translate-y-2 opacity-0'"
>
<p class="text-sm text-(--fg)">
This panel fades and slides into view the moment <code class="font-mono">isMounted</code> becomes
<code class="font-mono text-(--fg)">true</code>.
</p>
<p class="mt-1 text-xs text-(--fg-subtle)">
On the server it renders hidden, avoiding hydration flicker.
</p>
</div>
</div>
</template>
@@ -0,0 +1,105 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { logicAnd } from './index';
// Realistic "ready to publish" checklist — each is a reactive boolean source.
const hasTitle = ref(true);
const acceptedTerms = ref(false);
const draftSaved = ref(true);
// A getter input, to show logicAnd accepts refs *and* getters.
const wordCount = ref(180);
const meetsLength = computed(() => wordCount.value >= 150);
const conditions = [
{ key: 'title', label: 'Title is filled in', model: hasTitle },
{ key: 'terms', label: 'Accepted publishing terms', model: acceptedTerms },
{ key: 'draft', label: 'Draft auto-saved', model: draftSaved },
];
// True only when every condition is truthy.
const canPublish = logicAnd(hasTitle, acceptedTerms, draftSaved, meetsLength);
</script>
<template>
<div class="flex w-full max-w-md flex-col gap-4">
<div class="flex flex-col gap-1">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">logicAnd</span>
<p class="text-sm text-(--fg-muted)">
Reactive logical <code class="font-mono text-(--fg)">AND</code> the result is true only when every input
resolves truthy. Toggle the checklist below.
</p>
</div>
<div class="flex flex-col gap-2 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<label
v-for="cond in conditions"
:key="cond.key"
class="flex cursor-pointer items-center gap-3 rounded-lg px-1.5 py-1.5 transition hover:bg-(--bg-inset)"
>
<input
v-model="cond.model.value"
type="checkbox"
class="h-4 w-4 shrink-0 cursor-pointer accent-(--accent)"
>
<span class="text-sm text-(--fg)">{{ cond.label }}</span>
<span
class="ml-auto inline-flex items-center rounded-md border px-2 py-0.5 text-xs font-medium tabular-nums"
:class="cond.model.value
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-inset) text-(--fg-subtle)'"
>
{{ cond.model.value }}
</span>
</label>
<!-- A getter-driven input to prove logicAnd accepts getters too. -->
<div class="mt-1 flex flex-col gap-2 rounded-lg bg-(--bg-inset) p-3">
<div class="flex items-center justify-between">
<span class="text-sm text-(--fg)">Word count 150</span>
<span
class="inline-flex items-center rounded-md border px-2 py-0.5 text-xs font-medium tabular-nums"
:class="meetsLength
? 'border-emerald-500/30 bg-emerald-500/10 text-emerald-600 dark:text-emerald-400'
: 'border-(--border) bg-(--bg-elevated) text-(--fg-subtle)'"
>
{{ meetsLength }}
</span>
</div>
<input
v-model.number="wordCount"
type="range"
min="0"
max="300"
step="10"
class="w-full cursor-pointer accent-(--accent)"
>
<span class="font-mono text-xs text-(--fg-subtle) tabular-nums">{{ wordCount }} words</span>
</div>
</div>
<div
class="flex items-center justify-between rounded-lg border p-4 transition"
:class="canPublish
? 'border-emerald-500/30 bg-emerald-500/10'
: 'border-(--border) bg-(--bg-inset)'"
>
<div class="flex flex-col gap-0.5">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">canPublish</span>
<span
class="font-mono text-3xl font-bold tabular-nums"
:class="canPublish ? 'text-emerald-600 dark:text-emerald-400' : 'text-(--fg)'"
>
{{ canPublish }}
</span>
</div>
<button
type="button"
:disabled="!canPublish"
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 disabled:cursor-not-allowed disabled:opacity-40 disabled:active:scale-100"
>
Publish
</button>
</div>
</div>
</template>
@@ -0,0 +1,53 @@
<script setup lang="ts">
import { ref } from 'vue';
import { logicNot } from './index';
const isLoading = ref(false);
const isReady = logicNot(isLoading);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between gap-3 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex flex-col">
<span class="text-sm font-medium text-(--fg)">Loading</span>
<span class="text-xs text-(--fg-subtle)">source value</span>
</div>
<button
type="button"
role="switch"
:aria-checked="isLoading"
class="relative inline-flex h-6 w-11 shrink-0 items-center rounded-full border border-(--border) transition focus:outline-none focus:ring-2 focus:ring-(--ring)"
:class="isLoading ? 'bg-(--accent)' : 'bg-(--bg-inset)'"
@click="isLoading = !isLoading"
>
<span
class="inline-block size-4 transform rounded-full bg-white shadow transition"
:class="isLoading ? 'translate-x-6' : 'translate-x-1'"
/>
</button>
</div>
<div class="grid grid-cols-2 gap-3">
<div class="flex flex-col items-center gap-1 rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">isLoading</span>
<span
class="font-mono text-lg font-bold tabular-nums"
:class="isLoading ? 'text-emerald-600 dark:text-emerald-400' : 'text-(--fg-muted)'"
>{{ isLoading }}</span>
</div>
<div class="flex flex-col items-center gap-1 rounded-lg border border-(--border) bg-(--bg-inset) p-3">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">isReady = !isLoading</span>
<span
class="font-mono text-lg font-bold tabular-nums"
:class="isReady ? 'text-emerald-600 dark:text-emerald-400' : 'text-(--fg-muted)'"
>{{ isReady }}</span>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center text-sm text-(--fg-muted)">
<span v-if="isReady" class="text-emerald-600 dark:text-emerald-400">Ready to continue</span>
<span v-else>Please wait, loading</span>
</div>
</div>
</template>
@@ -0,0 +1,55 @@
<script setup lang="ts">
import { ref } from 'vue';
import { logicOr } from './index';
const email = ref(true);
const sms = ref(false);
const push = ref(false);
const hasChannel = logicOr(email, sms, push);
const channels = [
{ key: 'email', label: 'Email', model: email },
{ key: 'sms', label: 'SMS', model: sms },
{ key: 'push', label: 'Push', model: push },
] as const;
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Notification channels</span>
<div class="flex flex-col gap-2">
<label
v-for="ch in channels"
:key="ch.key"
class="flex cursor-pointer items-center justify-between rounded-lg border border-(--border) bg-(--bg-elevated) px-3 py-2.5 transition hover:border-(--border-strong)"
>
<span class="text-sm font-medium text-(--fg)">{{ ch.label }}</span>
<input
v-model="ch.model.value"
type="checkbox"
class="size-4 cursor-pointer accent-(--accent)"
>
</label>
</div>
<div
class="flex items-center justify-between rounded-xl border p-4 transition"
:class="hasChannel
? 'border-emerald-500/30 bg-emerald-500/10'
: 'border-amber-500/30 bg-amber-500/10'"
>
<div class="flex flex-col">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">logicOr(email, sms, push)</span>
<span
class="text-sm font-medium"
:class="hasChannel
? 'text-emerald-600 dark:text-emerald-400'
: 'text-amber-600 dark:text-amber-400'"
>{{ hasChannel ? 'At least one channel is on' : 'Pick a channel to get notified' }}</span>
</div>
<span class="font-mono text-2xl font-bold tabular-nums text-(--fg)">{{ hasChannel }}</span>
</div>
</div>
</template>
@@ -0,0 +1,52 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useAbs } from './index';
const value = ref(-42);
const abs = useAbs(value);
// Map the current value (-100..100) to a 0..100% offset for the marker.
const markerLeft = computed(() => `${(value.value + 100) / 2}%`);
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-5">
<div class="flex items-end justify-between">
<div class="flex flex-col">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">value</span>
<span class="font-mono text-2xl font-bold tabular-nums text-(--fg-muted)">{{ value }}</span>
</div>
<div class="flex flex-col items-end">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">|value|</span>
<span class="font-mono text-3xl font-bold tabular-nums text-(--fg)">{{ abs }}</span>
</div>
</div>
<div class="flex flex-col gap-2">
<input
v-model.number="value"
type="range"
min="-100"
max="100"
step="1"
class="w-full cursor-pointer accent-(--accent)"
>
<div class="relative h-2 rounded-full bg-(--bg-inset)">
<div class="absolute inset-y-0 left-1/2 w-px bg-(--border-strong)" />
<div
class="absolute -top-1 size-4 -translate-x-1/2 rounded-full border-2 border-(--bg) bg-(--accent) transition-[left] duration-75"
:style="{ left: markerLeft }"
/>
</div>
<div class="flex justify-between font-mono text-xs text-(--fg-subtle) tabular-nums">
<span>-100</span>
<span>0</span>
<span>100</span>
</div>
</div>
<div class="rounded-lg border border-(--border) bg-(--bg-inset) p-3 text-center font-mono text-sm text-(--fg) tabular-nums">
Math.abs({{ value }}) = {{ abs }}
</div>
</div>
</template>
@@ -0,0 +1,71 @@
<script setup lang="ts">
import { computed, ref } from 'vue';
import { useAverage } from './index';
const scores = ref([88, 92, 76, 95]);
const average = useAverage(scores);
const display = computed(() =>
scores.value.length === 0 ? 'NaN' : average.value.toFixed(2),
);
function addScore() {
scores.value.push(Math.floor(Math.random() * 41) + 60);
}
function removeScore(index: number) {
scores.value.splice(index, 1);
}
</script>
<template>
<div class="flex w-full max-w-sm flex-col gap-4">
<div class="flex items-center justify-between gap-4 rounded-xl border border-(--border) bg-(--bg-elevated) p-4">
<div class="flex flex-col">
<span class="text-xs font-medium uppercase tracking-wide text-(--fg-subtle)">Average score</span>
<span class="text-xs text-(--fg-subtle)">{{ scores.length }} value{{ scores.length === 1 ? '' : 's' }}</span>
</div>
<span
class="font-mono text-3xl font-bold tabular-nums"
:class="scores.length === 0 ? 'text-amber-600 dark:text-amber-400' : 'text-(--fg)'"
>{{ display }}</span>
</div>
<div v-if="scores.length" class="flex flex-col gap-2">
<div
v-for="(score, i) in scores"
:key="i"
class="flex items-center gap-3 rounded-lg border border-(--border) bg-(--bg-inset) px-3 py-2"
>
<span class="w-6 shrink-0 font-mono text-xs text-(--fg-subtle) tabular-nums">#{{ i + 1 }}</span>
<input
v-model.number="scores[i]"
type="number"
min="0"
max="100"
class="w-full rounded-md border border-(--border) bg-(--bg) px-2 py-1 text-sm text-(--fg) tabular-nums transition focus:border-(--accent) focus:outline-none focus:ring-2 focus:ring-(--ring)"
>
<button
type="button"
aria-label="Remove value"
class="shrink-0 rounded-md border border-(--border) bg-(--bg-elevated) px-2 py-1 text-sm text-(--fg-muted) transition hover:border-(--border-strong) hover:text-(--fg) active:scale-[0.98] cursor-pointer"
@click="removeScore(i)"
>
</button>
</div>
</div>
<div v-else class="rounded-lg border border-amber-500/30 bg-amber-500/10 p-3 text-center text-sm text-amber-600 dark:text-amber-400">
No values mean is NaN (0 / 0)
</div>
<button
type="button"
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"
@click="addScore"
>
+ Add random score
</button>
</div>
</template>

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