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Developer Tools

Prism provides a comprehensive set of tools for developing, testing, and deploying uncertainty-aware applications.

🛠️ Available Tools​

Command Line Interface (CLI)​

The primary way to run Prism programs and interact with the language.

npm install -g @prism-lang/cli
prism run my-script.prism

Features:

  • Execute .prism files
  • Evaluate expressions directly
  • Launch interactive REPL
  • Configure LLM providers

Interactive REPL​

Experiment with Prism code in real-time with immediate feedback.

prism repl
# or just
prism

Features:

  • Interactive evaluation
  • Variable persistence
  • Command history
  • Session statistics
  • Multi-line input

VS Code Extension​

Full language support in Visual Studio Code with syntax highlighting and themes.

# Install from GitHub release
curl -L https://github.com/HaruHunab1320/Prism-TS/releases/download/v0.1.0/prism-lang-0.1.0.vsix -o prism-lang.vsix
code --install-extension prism-lang.vsix

Features:

  • Syntax highlighting for all Prism features
  • Semantic colors for confidence operators
  • Light and dark themes
  • Auto-indentation and bracket matching

🚀 Quick Start​

  1. Install the CLI

    npm install -g @prism-lang/cli

  2. Install VS Code Extension

    curl -L https://github.com/HaruHunab1320/Prism-TS/releases/download/v0.1.0/prism-lang-0.1.0.vsix -o prism-lang.vsix
    code --install-extension prism-lang.vsix
    rm prism-lang.vsix

  3. Create your first program

    // hello.prism
    greeting = llm("Say hello!") ~> 0.9
    console.log(greeting)

  4. Run it

    prism run hello.prism

🔧 Configuration​

Environment Variables​

Configure LLM providers for AI capabilities:

# .env file
CLAUDE_API_KEY=your-claude-key
GEMINI_API_KEY=your-gemini-key
PRISM_DEFAULT_LLM=claude

VS Code Settings​

{
  "files.associations": {
    "*.prism": "prism"
  },
  "[prism]": {
    "editor.formatOnSave": true
  }
}

📚 Tool Integration​

The tools work seamlessly together:

  1. Write code in VS Code with syntax highlighting
  2. Test expressions in the REPL
  3. Run programs with the CLI
  4. Debug using console output and confidence tracking

🎯 Use Cases​

Development Workflow​

# 1. Start REPL for experimentation
prism

# 2