Tech Stack Detection Skill

Name: tech-stack-detection
Rating: 92
Author: chaitanyame

Automatically detects project technology stack from configuration files for existing projects.

⚠️ For Existing Projects Only

This skill scans project files to detect what's already installed. For new projects where you need to choose a tech stack, use the stack-advisor skill instead.

When to Use

Scenario	Use This Skill?
Existing project with code	✅ Yes - detect installed stack
New project, user knows stack	❌ No - user provides to /speckit.plan
New project, user unsure	❌ No - use `stack-advisor` Q&A

Detection Patterns

Node.js / TypeScript

File	Indicates
`package.json`	Node.js project
`tsconfig.json`	TypeScript
`package-lock.json`	npm
`yarn.lock`	Yarn
`pnpm-lock.yaml`	pnpm
`bun.lockb`	Bun

Testing Frameworks

File	Framework
`playwright.config.ts`	Playwright
`playwright.config.js`	Playwright
`jest.config.js`	Jest
`jest.config.ts`	Jest
`vitest.config.ts`	Vitest
`cypress.config.js`	Cypress

Build Tools / Frameworks

File	Framework
`vite.config.ts`	Vite
`next.config.js`	Next.js
`nuxt.config.ts`	Nuxt
`astro.config.mjs`	Astro
`svelte.config.js`	SvelteKit
`angular.json`	Angular
`webpack.config.js`	Webpack

Python

File	Indicates
`pyproject.toml`	Modern Python
`setup.py`	Python package
`requirements.txt`	pip dependencies
`Pipfile`	pipenv
`poetry.lock`	Poetry
`pytest.ini`	pytest

Other Languages

File	Language/Framework
`Cargo.toml`	Rust
`go.mod`	Go
`Gemfile`	Ruby
`composer.json`	PHP
`pom.xml`	Java Maven
`build.gradle`	Java Gradle

Quick Detection Commands

bash

# Bash - Run detection script
./.github/skills/tech-stack-detection/scripts/detect-stack.sh

# PowerShell - Run detection script
.\.github\skills\tech-stack-detection\scripts\detect-stack.ps1

Output Format

Scripts output JSON:

json

{
  "language": "typescript",
  "runtime": "node",
  "package_manager": "npm",
  "frameworks": ["next.js", "react"],
  "testing": ["playwright", "jest"],
  "build_tools": ["webpack"],
  "detected_files": [
    "package.json",
    "tsconfig.json",
    "playwright.config.ts"
  ]
}

Skill Creation Based on Stack

After detection, create appropriate skills:

bash

# For React + TypeScript project
python .github/skills/skill-creator/scripts/init_skill.py react-patterns --path .github/skills

# For Next.js project
python .github/skills/skill-creator/scripts/init_skill.py nextjs-patterns --path .github/skills

Resources

•scripts/detect-stack.sh - Stack detection (Bash)
•scripts/detect-stack.ps1 - Stack detection (PowerShell)