Undo Snackbar

A one-at-a-time bar for an action already taken — delete, archive, send — with a visible countdown and an Undo button that stays keyboard-reachable the whole window. Hovering or focusing it pauses the clock. Distinct from the toast queue: this holds exactly one reversible action, not a stream of notices.

Standard Overlays & Menus · React · Subscription · commercial licence · v1.0.1 · updated 2026-10-15 · Live demo

Install

velocityx add standard-undo-snackbar

Subscription component. Run velocityx login with your key first — get one.

---
import UndoSnackbar from '../components/velocity/standard-undo-snackbar/UndoSnackbar.jsx';
---
<UndoSnackbar client:visible />

Props

Prop	Type	Default	Description
state	—	—	—
onDismiss	—	—	—
windowMs	—	DEFAULT_WINDOW_MS	—
undoLabel	string	'Undo'	—

Files written

velocityx drops these into your project:

• components/velocity/standard-undo-snackbar/UndoSnackbar.jsx

Peer dependencies

react — nothing else. Zero external dependencies is the point.

Theming

Colours come from the primary-* / accent-* Tailwind scales, so this drops into a project that is not Velocity without dragging our brand in. Install the contract once:

velocityx theme

Then set your whole brand in one place — raw RGB channels, not hex (a hex here silently breaks every opacity variant):

:root {
  --vx-brand: custom;
  --vx-primary-600: 220 38 38;
}

There is no component-level font-family anywhere in the library — your font cascade wins.

Licence

Commercial, for the duration of an active Velocity X subscription. The source is served by the licence-gated endpoint, never by the public CDN.