Quick Run JS/TS

A VS Code extension that lets you run JavaScript and TypeScript files with a single click, including unsaved scratch files. Automatically detects your Node.js version and uses native TypeScript support when available.

Features

• One-click execution via the play button in the editor title bar
• Untitled file support — run unsaved JavaScript/TypeScript scratch files without saving first
• Automatic Node.js version detection:
  • Node.js >= 23.6: Runs TypeScript files natively
  • Node.js >= 22.6: Uses --experimental-strip-types flag
  • Older versions: Falls back to tsx (configurable)
• Supports .js, .mjs, .cjs, .ts, .mts, .cts files
• Output displayed in a dedicated terminal panel

Installation

Install from the VS Code Marketplace by searching for Quick Run JS/TS, or install via the command line:

code --install-extension banlify.quick-run-js-ts

Usage

1. Open a .js, .mjs, .cjs, .ts, .mts, or .cts file (or create an untitled file and set the language to JavaScript/TypeScript)
2. Click the play button in the editor title bar
3. The file runs in a terminal panel

Tip: For untitled files, the content is written to a temporary file, executed, and cleaned up automatically.

Configuration

Development

Prerequisites

• Node.js >= 22.18.0 (required by tsdown at build time)

Commands

# Install dependencies
npm install

# Build the extension
npm run build

# Watch mode for development
npm run watch

# Lint with oxlint
npm run lint

# Format with oxfmt
npm run format

# Run lint + format check
npm run check

# Package for publishing
npm run package

Project Structure

├── src/
│   └── extension.ts    # Extension entry point
├── playground/         # Sample JS/TS files for testing
├── tsconfig.json       # TypeScript configuration
├── tsdown.config.ts    # tsdown bundler configuration
├── .oxlintrc.json      # oxlint linter configuration
├── .oxfmtrc.json       # oxfmt formatter configuration
└── package.json        # Extension manifest

License

MIT