Measured entry
8bitcn-advanced3
A retro newsletter signup card with a badge, email field, call to action, and reassurance copy. It ships as a shadcn registry block with a retro stylesheet and custom wrappers around shadcn primitives. It relies on the cn utility, Tailwind theme classes, class-variance-authority, Radix, and a Google-hosted pixel font.



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.
| Build | OK |
|---|---|
| Mount | OK |
| Console errors | 0 |
| Uncaught page errors | 0 |
| Horizontal overflow | clean at 375, 768, 1440 |
| Axe critical | 0 |
| Axe serious | 0 |
| Axe moderate | 0 |
| Axe minor | 0 |
| Gzip marginal | 33.3 KB (98.7 KB build, 65.4 KB baseline) |
| Bare mode | FAIL |
| Provider required | NO |
| Demo used | written from the component source API |
What the harness recorded
BARE BUILD
✗ Build failed in 1.32s error during build: [vite]: Rollup failed to resolve import "class-variance-authority" from "<sandbox>re-cad82cab3519/src/components/ui/8bit/badge.tsx".
Verdict
The supplied registry install does not build because its retro Input wrapper imports a base shadcn Input file that is not present. It needs a shadcn-style setup before use. Avoid it for drop-in delivery; consider it only if you will supply and verify the expected primitives.
Use it if
- You already use shadcn conventions and want a pixel-art newsletter card.
- You are prepared to connect the email field and button to your own subscription flow.
- Your design system can accommodate the bundled retro font and squared decorative borders.
Skip it if
- You need a registry block that builds in a project without preinstalled shadcn primitives.
- You need a complete signup form with submission, validation, loading, and success states.
- Your product cannot load a font from Google or does not suit a pixel-art visual style.
Install
| Declared dependencies | radix-ui, clsx, tailwind-merge |
|---|---|
| Missing on install | none |
| Bare install | fails once the shadcn-style helpers are removed, so it needs that setup |
| Provider | no provider required in the harness |
Add the cn utility, Tailwind theme tokens, shadcn Badge, Button, Card, and Input primitives, class-variance-authority and Radix support. Preserve the configured path aliases, include the retro stylesheet, allow or replace the hosted font, and wire the form to a real submit handler.
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/TheOrcDev/8bitcn-uiAlternatives
Other published entries for the auth-form pattern, ordered by what they measured: mounts first, then clean axe scans, then bare-mode passes, then the smaller bundle.
- meraki-auth-sign-in-card-with-side-imageminimal-flat
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- YES
- A11y
- 0
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- 18.9KB
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- NO
- shadcn-block-login-01minimal-flat
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- YES
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- shadcn-block-login-02minimal-flat
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- shadcn-block-login-05minimal-flat
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- 8bitcn-login-formskeuomorphism
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- YES
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- tripled-social-login-button-shadcnuiminimal-flat
- Renders
- YES
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- NO