Stack Detector

Why This is Copilot-Exclusive

This skill is specific to the everything-copilot-cli collection: the recommendation table maps detected technologies to skill and rule file paths that only exist in this repository. Other AI agents can also inspect file systems, but this skill's value is the curated mapping to this specific collection's skills and rules — not the file-scanning mechanics itself.

When to Use

• At the start of a session on an unfamiliar codebase, before or alongside context-prime
• When you want focused recommendations for which skills and rules apply to this project (context-prime loads broad context; stack-detector targets specific recommendations)
• When onboarding a new contributor and recommending which skills to study
• When auditing a project to suggest missing tooling or practices

Workflow

1. Detect Runtime & Package Manager

# Check for Node.js project
if (Test-Path "package.json") {
    $pkg = Get-Content "package.json" | ConvertFrom-Json
    Write-Host "Node.js project detected"
    Write-Host "Name: $($pkg.name)"
}

# Detect package manager from lockfile
$lockfiles = @{
    "pnpm-lock.yaml"    = "pnpm"
    "yarn.lock"         = "yarn"
    "package-lock.json" = "npm"
    "bun.lockb"         = "bun"
}
foreach ($file in $lockfiles.Keys) {
    if (Test-Path $file) { Write-Host "Package manager: $($lockfiles[$file])"; break }
}

# Python
if ((Test-Path "pyproject.toml") -or (Test-Path "requirements.txt")) {
    Write-Host "Python project detected"
}

# Go
if (Test-Path "go.mod") { Write-Host "Go project detected" }

# Java / Kotlin
if ((Test-Path "build.gradle") -or (Test-Path "pom.xml")) {
    Write-Host "JVM project detected"
}

2. Detect Frameworks & Libraries

if (Test-Path "package.json") {
    $pkg = Get-Content "package.json" | ConvertFrom-Json
    $deps = @()
    if ($pkg.dependencies)    { $deps += $pkg.dependencies.PSObject.Properties.Name }
    if ($pkg.devDependencies) { $deps += $pkg.devDependencies.PSObject.Properties.Name }

    $frontendMap = @{
        "next"     = "Next.js"
        "react"    = "React"
        "vue"      = "Vue"
        "nuxt"     = "Nuxt"
        "@angular" = "Angular"
        "svelte"   = "Svelte"
        "astro"    = "Astro"
    }
    foreach ($key in $frontendMap.Keys) {
        if ($deps -match $key) { Write-Host "Framework: $($frontendMap[$key])" }
    }

    $backendMap = @{
        "express"  = "Express"
        "@nestjs"  = "NestJS"
        "hono"     = "Hono"
        "fastify"  = "Fastify"
    }
    foreach ($key in $backendMap.Keys) {
        if ($deps -match $key) { Write-Host "Backend: $($backendMap[$key])" }
    }

    $dbMap = @{
        "prisma"    = "Prisma"
        "drizzle"   = "Drizzle ORM"
        "@supabase" = "Supabase"
        "typeorm"   = "TypeORM"
    }
    foreach ($key in $dbMap.Keys) {
        if ($deps -match $key) { Write-Host "Database/ORM: $($dbMap[$key])" }
    }

    $testingMap = @{
        "vitest"     = "Vitest"
        "playwright" = "Playwright"
        "jest"       = "Jest"
        "cypress"    = "Cypress"
    }
    foreach ($key in $testingMap.Keys) {
        if ($deps -match $key) { Write-Host "Testing: $($testingMap[$key])" }
    }

    $cloudMap = @{
        "wrangler"  = "Cloudflare Workers"
        "vercel"    = "Vercel"
        "@aws-sdk"  = "AWS SDK"
    }
    foreach ($key in $cloudMap.Keys) {
        if ($deps -match $key) { Write-Host "Cloud: $($cloudMap[$key])" }
    }
}

3. Detect Config Files

$configMap = @{
    "next.config.*"       = "Next.js"
    "vite.config.*"       = "Vite"
    "tailwind.config.*"   = "Tailwind CSS"
    "vitest.config.*"     = "Vitest"
    "playwright.config.*" = "Playwright"
    "wrangler.toml"       = "Cloudflare Workers"
    "vercel.json"         = "Vercel"
    "astro.config.*"      = "Astro"
    "drizzle.config.*"    = "Drizzle ORM"
    "tsconfig.json"       = "TypeScript"
}

foreach ($pattern in $configMap.Keys) {
    if (Get-ChildItem -Filter $pattern -ErrorAction SilentlyContinue) {
        Write-Host "Config detected: $($configMap[$pattern])"
    }
}

4. Recommend Skills & Rules

Based on the detected stack, recommend the following from this repository:

Detected Technology	Recommended Skills	Recommended Rules
TypeScript	tdd-workflow, code-review	rules/languages/typescript.md
Next.js	commit-workflow, release	rules/frameworks/nextjs.md
React	code-review, refactor-clean	rules/frameworks/react.md
Prisma / Drizzle	evaluate-repository	rules/frameworks/prisma.md
Playwright	test-coverage, e2e-testing	rules/frameworks/playwright.md
Vitest	tdd-workflow, eval-harness	rules/frameworks/vitest.md
NestJS / Express	security-scan	rules/frameworks/nestjs.md
Cloudflare Workers	cost-audit	rules/frameworks/cloudflare-workers.md
Python	security-scan, evaluate-repository	rules/languages/python.md
Go	security-scan	rules/languages/golang.md
Java / JVM	security-scan, evaluate-repository	rules/languages/java.md
Any project	security-scan	rules/common/supply-chain-security.md
Next.js + Prisma	nextjs-prisma	rules/frameworks/nextjs.md, rules/frameworks/prisma.md
React + Vitest	react-vitest	rules/frameworks/react.md, rules/frameworks/vitest.md
NestJS + Prisma	nestjs-prisma	rules/frameworks/nestjs.md, rules/frameworks/prisma.md

Note: See README.md for the current full list of available skills and rules.

5. Output Summary

Write-Host ""
Write-Host "=== Stack Detection Complete ==="
Write-Host "Recommended skills for this project:"
Write-Host "  /context-prime      -- load live project context"
Write-Host "  /commit-workflow    -- if Git workflow needed"
Write-Host "  /security-scan      -- if security audit needed"
Write-Host "(Add detected framework-specific skills as available)"

Notes

• This skill reads files only — it makes no changes to the project
• Combine with context-prime for a complete session initialization
• The recommendation table above is updated as new framework-specific rules and combo skills are added in later phases of this repository's roadmap