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2026-04-17 23:26:01 +00:00

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# Composables
## useToast
Show notifications. Requires `<UApp>` wrapper.
```ts
const toast = useToast()
toast.add({
title: 'Success',
description: 'Item saved',
color: 'success', // primary, success, error, warning, info
icon: 'i-lucide-check-circle',
duration: 5000, // 0 = never dismiss
actions: [{ label: 'Undo', onClick: () => {} }]
})
toast.remove('toast-id')
toast.clear()
```
## useOverlay
Programmatically create modals, slideovers, drawers.
```ts
const overlay = useOverlay()
// create() returns a reusable instance with open(), close(), patch()
const modal = overlay.create(MyComponent)
// open() accepts props and returns an object with .result (a Promise)
const { result } = modal.open({ title: 'Confirm' })
if (await result) {
// User confirmed
}
// Inside the overlay component, emit close with a value:
// emit('close', true) or emit('close', false)
// You can also close from outside:
modal.close(false)
```
## defineShortcuts
Define keyboard shortcuts.
```ts
defineShortcuts({
meta_k: () => openSearch(), // Cmd+K (Mac) / Ctrl+K (Win)
meta_shift_p: () => openPalette(), // Cmd+Shift+P
escape: () => close(),
ctrl_s: () => save(),
// With condition
meta_enter: {
handler: () => submit(),
whenever: [isFormValid]
}
})
```
| Key | Meaning |
|---|---|
| `meta` | Cmd (Mac) / Ctrl (Windows) |
| `ctrl` | Ctrl key |
| `alt` | Alt / Option key |
| `shift` | Shift key |
| `_` | Key separator |
## defineLocale / extendLocale
i18n locale definition.
```ts
import { fr } from '@nuxt/ui/locale'
// Use a built-in locale (50+ available)
// <UApp :locale="fr">
// Define custom locale
const locale = defineLocale({
name: 'Español',
code: 'es',
dir: 'ltr',
messages: {
select: { placeholder: 'Seleccionar...' }
}
})
// Extend existing locale
import { en } from '@nuxt/ui/locale'
const customEn = extendLocale(en, {
messages: { commandPalette: { placeholder: 'Search a component...' } }
})
```
```vue
<UApp :locale="fr"><NuxtPage /></UApp>
```
## extractShortcuts
Extract shortcut keys from a list of items (e.g., dropdown menu items) into a shortcuts map for `defineShortcuts`.
```ts
const items = [
{ label: 'New file', kbds: ['meta', 'n'], onSelect: () => newFile() },
{ label: 'Save', kbds: ['meta', 's'], onSelect: () => save() }
]
defineShortcuts(extractShortcuts(items))
```
## Quick reference
| Composable | Purpose |
|---|---|
| `useToast` | Show notifications |
| `useOverlay` | Programmatic modals/slideovers |
| `defineShortcuts` | Keyboard shortcuts |
| `defineLocale` / `extendLocale` | i18n locale |
| `extractShortcuts` | Parse shortcut definitions |