vibecodng.com

Free MCP betaIndex and tools live

Measured entry

fancy-screensaver

background-effectdark-futuristicmotion on file

A client-side React wrapper that bounces arbitrary child content within a referenced container. It ships through a shadcn registry and uses Motion, a registry-supplied dimension hook, a class-name utility, and the project alias expected by shadcn-style apps.

Specimen
Motion capture of the mounted demo, recorded by the harness. No audio track.
Harness screenshot of fancy-screensaver at 375 pixels wide
Harness screenshot at 375 pixels wide. This viewport scrolled sideways.
Harness screenshot of fancy-screensaver at 768 pixels wide
Harness screenshot at 768 pixels wide. No horizontal overflow recorded.
Harness screenshot of fancy-screensaver 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 fancy-screensaver
BuildOK
MountOK
Console errors0
Uncaught page errors0
Horizontal overflowflagged at 375
Axe critical0
Axe serious0
Axe moderate0
Axe minor0
Gzip marginal67.0 KB (132.4 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 31.99s
error during build:
[vite:load-fallback] Could not load <sandbox>/src/lib/utils (imported by src/cut/fancy/blocks/screensaver.tsx): ENOENT: no such file or directory, open '<sandbox>/src/lib/utils'

Verdict

A focused, usable novelty effect with clean mounting and no detected accessibility violations, but it carries a meaningful Motion cost and needs responsive care. Bare installation fails because it needs a shadcn-style setup, including the expected utility alias and registry helper.

Use it if

  • You want a DVD-logo-style bouncing element inside a bounded hero, kiosk, or idle-state panel.
  • Your app already uses React client components and Motion.
  • You can provide a positioned container ref and ensure the moving child fits inside it.

Skip it if

  • You need a dependency-light decorative effect and do not otherwise use Motion.
  • Your layout must work unchanged in narrow viewports, since the supplied demo overflows there.
  • You need reduced-motion behavior or pause controls without adding them yourself.
  • The moving content can be larger than its container or change size unpredictably.

Install

Installation record for fancy-screensaver
Declared dependenciesmotion
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, install Motion, copy or replace the dimension-measurement hook, add a compatible class-name merge utility, and either configure the expected source alias or rewrite those imports. Render it as a client component inside a positioned, overflow-clipped container.

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/danielpetho/fancy
License
MIT
Record published
2026-08-14

Alternatives

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