ERROR CLAP
Your code failed. The cat approves.
ERROR CLAP is a lightweight VS Code extension that listens to VS Code's official terminal shell-integration completion events. When a command ends with a non-zero exit code, it presents the supplied assets/meme.mp4 clapping-cat meme in a small dark webview.
Features
- Detects completed terminal commands through
onDidEndTerminalShellExecution.
- Plays the bundled MP4 without reading, uploading, or parsing terminal output.
- Cooldown protection, ignored command patterns, and configurable display time.
- Status bar toggle and Command Palette commands for testing and troubleshooting.
- Optional local synthesized applause sound; no external network requests.
Development
npm install
npm run compile
npm test
npx vsce package --allow-missing-repository
Press F5 in VS Code to launch an Extension Development Host. Run a failing command in its integrated terminal, or use ERROR CLAP: Test Applause from the Command Palette.
The packaged asset is assets/meme.mp4. To replace it, keep the filename and MP4 format, or update the resource path in src/webview/catPanel.ts. The current supplied video is 480×480 and approximately 1.6 seconds long. The Marketplace icon at assets/icon.png is a 128×128 frame derived from that supplied video.
Shell integration
The extension needs a VS Code version and integrated shell that provide shell integration. If it is unavailable, ERROR CLAP shows a warning and does not pretend it can detect every terminal failure. Exit codes that are undefined are ignored safely.
Settings
All settings are available under Settings → Extensions → ERROR CLAP:
errorClap.enabled — master switch, default true.errorClap.animationEnabled — show the MP4, default true.errorClap.soundEnabled — play local synthesized applause, default false.errorClap.cooldownSeconds — default 3.errorClap.displayDuration — default 6 seconds.errorClap.presentationMode — panel or notification.errorClap.minimumExitCode — default 1.errorClap.ignoreCommands — command fragments or * globs to skip.errorClap.ignoreShellIntegrationUnavailable — suppress the compatibility warning.
Commands
- ERROR CLAP: Toggle
- ERROR CLAP: Test Applause
- ERROR CLAP: Show Last Failure
- ERROR CLAP: Reset Cooldown
Privacy and limitations
Everything runs locally. ERROR CLAP does not execute commands, modify terminals, inspect terminal output, or send data to a server. VS Code's shell integration may not be available in every remote or customized shell session. The standard webview presentation opens beside the current editor and uses preserveFocus; VS Code controls the exact layout.
Marketplace preparation
The package is configured for publisher ID JenishPatel and includes assets/icon.png. No repository URL is declared because this workspace does not have a Git remote; add the public repository URL to package.json when one exists. Install locally with Extensions: Install from VSIX.... Publish only after signing in with vsce login JenishPatel and reviewing the generated package.
License
MIT. See the included LICENSE file.
