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Measured entry

shadcn-alert-dialog

dialogunclassified

A registry-delivered React and TypeScript alert dialog built on Radix UI primitives. It ships as source code rather than a standalone package and composes a portal, overlay, content, title, description, media, and action controls. Its styling relies on Tailwind theme tokens and animations, plus shadcn's shared class utility and Button component.

Specimen
Harness screenshot of shadcn-alert-dialog at 375 pixels wide
Harness screenshot at 375 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-alert-dialog at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of shadcn-alert-dialog 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 shadcn-alert-dialog
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowclean at 375, 768, 1440
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal41.5 KB (106.9 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 32.51s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/cut/components/ui/alert-dialog.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A dependable choice for an existing shadcn codebase, with sensible composition and Radix behavior. It is not portable as copied source: the bare mount fails, so it needs a shadcn-style setup and should be treated as a design-system component rather than an isolated dialog.

Use it if

  • You need a modal confirmation flow for destructive or consequential actions.
  • Your app already follows shadcn conventions and has the shared Button and class utility in place.
  • You want Radix-managed dialog behavior while retaining direct ownership of the component source.

Skip it if

  • You need a drop-in package that brings its own styling and has no project-local imports.
  • Your design system does not use Tailwind theme tokens or shadcn component conventions.
  • You only need an informational modal where explicit confirmation semantics would be misleading.

Install

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

In a non-shadcn project, add Radix UI, provide a compatible class-merging utility and Button component, configure the expected import aliases, and supply Tailwind theme tokens plus the state-based animation utilities used by the source.

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/shadcn-ui/ui
License
MIT
Record published
2026-08-14

Alternatives

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