Code Block
Collapsed File
A long listing collapsed to its first lines, with the tail one click away. Suits documentation and help pages. Change the code and how many lines stay visible.
React + Tailwind, shadcn-compatible: press “Copy for AI” and your Cursor or Claude Code agent installs it with the shadcn CLI.
What you can change
- the listing rows through the lines array
- the file path through path
- the number of visible rows through visibleCount
A link for your AI agent: preview, code and instructions.
Preview

Use it with AI
- 1. Copy the link.
- 2. Write to your agent in your own words and drop the link into the sentence.
- 3. The agent opens the link and installs the component from the registry.
put this on the home page as the hero:
https://vibeui.club/c/codeblock-006?lang=en&theme=dark
Not sure where to paste it? Step-by-step guide
Show the full instructions
What the link says, spelled out. Use it when your agent cannot open links — paste this text instead.
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How to use
<Codeblock006
path="lib/load-user.ts"
visibleCount={4}
/>A sample call. The agent installs the component itself from the registry via the “Copy for AI” link.
Settings
- File
path· default: lib/load-user.ts- Visible rows
visibleCount· default: 4- Expand caption
moreText· default: Show {count} more lines- Collapse caption
lessText· default: Collapse- Background
background· default: theme colour
More in Code Block
FAQ
- How do I add Collapsed File with Cursor or Claude Code?
- Press “Copy for AI” on this page and paste it into your agent's chat. The instruction contains the shadcn CLI install command, the dependencies and what to keep, so the agent installs this exact component instead of recreating a lookalike.
- What does Collapsed File depend on?
- No npm packages beyond React and Tailwind CSS.
- What can I change in Collapsed File?
- Adapt: the listing rows through the lines array; the file path through path; the number of visible rows through visibleCount. Keep as installed: the local --vibeui-codeblock-006-* palette — do not swap it for your theme tokens; the native details: it gives expansion, find-in-page and no-JS behaviour for free; the visible first lines outside details — otherwise a collapsed block says nothing about itself.
- Is Collapsed File free?
- Yes. The preview is open without an account; with a free account you can copy up to 20 components a month.
For developers
npx shadcn@latest add https://vibeui.club/r/pro/codeblock-006.jsonThis command needs a signed link: sign in and open “Component source” below — it issues a working link valid for 30 minutes. All install options
Technical notes
The component is self-contained: one file, zero dependencies, its own palette in the local --vibeui-codeblock-006-* variables. Server component: the expansion is done by native details, no state is kept in JS. The visible part of the listing lies outside details and only the tail goes inside, so the first lines are always visible. The fade at the bottom edge is switched on by the :has(details:not([open])) selector on the root and lifts by itself once the block is expanded. The summary caption is swapped by a pair of spans, one of which is hidden by details[open]. The theme comes from the surrounding color-scheme through light-dark(): the block has no surface by default, and the header and the summary hover rest on translucent overlays.
Tags
- code
- details
- collapse
- no-js
Component source
The same file your agent installs. Here in case you would rather copy it by hand.
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