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Code Block

Runtime Trace

A runtime error with its stack: your own code is shown in full with an excerpt of the failing line, while node_modules frames are folded into details.

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 stack frames through the frames array
  • the error type through errorName
  • the error text through message

A link for your AI agent: preview, code and instructions.

Preview

1440pxHost theme
Runtime Trace — A runtime error with its stack: your own code is shown in full with an excerpt of the failing line, while node_modules frames are folded into details.

Use it with AI

  1. 1. Copy the link.
  2. 2. Write to your agent in your own words and drop the link into the sentence.
  3. 3. The agent opens the link and installs the component from the registry.
AI
1Pick it here

put this on the home page as the hero:

https://vibeui.club/c/codeblock-027?lang=en&theme=dark

2Paste into the chat
3Get it in your project

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

<Codeblock027
  errorName="TypeError"
  message="Cannot read properties of undefined (reading 'price')"
/>

A sample call. The agent installs the component itself from the registry via the “Copy for AI” link.

Settings

Error type
errorName · default: TypeError
Error text
message · default: Cannot read properties of undefined (reading 'price')
Fold caption
vendorLabel · default: Frames from node_modules ({count})
Error hue
accent · default: theme colour
Background
background · default: theme colour

More in Code Block

FAQ

How do I add Runtime Trace 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 Runtime Trace depend on?
No npm packages beyond React and Tailwind CSS.
What can I change in Runtime Trace?
Adapt: the stack frames through the frames array; the error type through errorName; the error text through message. Keep as installed: the local --vibeui-codeblock-027-* palette — do not swap it for your theme tokens; the split between own and vendor frames: fifteen node_modules lines hide what to fix; the source excerpt on the first frame only — otherwise the stack turns into a listing.
Is Runtime Trace 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-027.json

This 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-027-* variables. Server component: folding the vendor frames is done by native details, there is no state in JS. The frames are split by the vendor flag in the data rather than by parsing the path: a directory name is an unreliable signal, and the decision stays with the calling code. A source excerpt is shown only for the first frame, because there is nothing to fix in the other lines; the header is set off by a red bar on the left, and the error type and its text are put on separate lines.

Tags

  • error
  • stack
  • trace
  • debug
Component source

The same file your agent installs. Here in case you would rather copy it by hand.

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