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Measured entry

reui-alert

alertminimal-flat

A copy-in React alert primitive shipped as TypeScript through the ReUI shadcn registry. It provides alert, title, description, and action slots, with semantic alert behavior and several status variants. Styling comes from Tailwind utility classes and theme tokens; variant composition uses class-variance-authority and the component imports a local cn helper.

Specimen
Harness screenshot of reui-alert at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of reui-alert at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of reui-alert at 1440 pixels wide
Harness screenshot at 1440 pixels wide. No horizontal overflow recorded.

Measured

Every value below was written by the harness on the run that produced the frames above. None of it is derived from the prose.

Harness measurements recorded for reui-alert
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal29.9 KB (95.3 KB build, 65.4 KB baseline)
Bare modeFAIL
Provider requiredNO
Demo usedwritten from the component source API

What the harness recorded

BARE BUILD

✗ Build failed in 1m 41s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/cut/alert.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A solid fit for an existing ReUI or shadcn-based design system: the slot structure is practical, the variants cover common states, and the component behaves cleanly in the configured harness. It needs a shadcn-style setup and does not mount as a bare drop-in.

Use it if

  • You need an inline status banner with optional icon, title, description, and action content.
  • Your app already follows shadcn conventions for aliases, Tailwind theme tokens, and a shared cn helper.
  • You want consistent default, destructive, informational, success, warning, and inverted treatments from one primitive.

Skip it if

  • You need a standalone package that works without project-level aliases, utilities, or theme tokens.
  • Your message should not be announced immediately by assistive technology, since the root always uses alert semantics.
  • You need built-in dismissal, timing, stacking, or notification state rather than a presentational alert primitive.

Install

Installation record for reui-alert
Declared dependenciesclass-variance-authority
Missing on installnone
Bare installfails once the shadcn-style helpers are removed, so it needs that setup
Providerno provider required in the harness

For a non-shadcn project, add class-variance-authority, provide a cn class-merging helper at the expected alias or change the import, configure that alias, and supply Tailwind plus the referenced card, foreground, status, border, and inverted theme tokens.

Source and credit

This page is a review, not a copy. The component source lives with its author and this site does not republish it. Read the license before you use anything.

Author repository

github.com/keenthemes/reui
License
MIT
Record published
2026-08-14

Alternatives

Other published entries for the alert pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.