Prompt Library VS Code Extension

A minimal VS Code extension that provides a generic prompt library for GitHub Copilot Chat. The extension reads prompt/agent markdown files under .github/ and makes them available as chat commands.

Features

• Generic prompt library system that reads from markdown files
• Easy to extend with new prompts
• Integration with GitHub Copilot Chat

Available Commands

/code-review

Runs the code review prompt.

/Test

Generates test cases.

/ultimate-secure-fix

Scans the current file for security vulnerabilities.

/update-impl

Refactors code to use Java 8 features.

Project Structure

.
├── .github/
│   ├── agents/               # Agent instructions (YAML frontmatter)
│   └── prompts/              # Prompt templates
├── src/
│   └── extension.ts          # Main extension code
├── package.json              # Extension manifest
├── tsconfig.json            # TypeScript configuration
└── README.md

How to Use

1. Install dependencies:

   npm install
   

2. Compile the extension:

   npm run compile
   

3. Press F5 in VS Code to launch the extension in a new Extension Development Host window

4. Open GitHub Copilot Chat and use one of:

   • @prompt-library /code-review
   • @prompt-library /Test
   • @prompt-library /ultimate-secure-fix
   • @prompt-library /update-impl

Adding New Prompts

To add a new prompt:

1. Create a new markdown file in the prompts/ folder (e.g., prompts/my-prompt.md)
2. Write your prompt content in the markdown file
3. Add a new command in package.json under contributes.chatParticipants[0].commands
4. Add an entry to the COMMAND_PROMPT_MAP in src/extension.ts mapping the command name to the prompt file

Development

• Compile: npm run compile
• Watch mode: npm run watch

Requirements

• VS Code 1.106.0 or higher
• GitHub Copilot extension