Production QA Validator

Run phases in order. Fix failures before moving to next.

When to Use

• Use before shipping or promoting a fullstack Next.js app to production.
• Use after large UI, SEO, auth, API, database, or dependency changes need a concrete launch-readiness pass.
• Use when you need a compact command-driven checklist for build, route, metadata, performance, security, and cleanup checks.

export PROD_URL="https://yourdomain.com"
export QA_AUTH_HEADER=""       # optional: "Bearer eyJ..."
export PAGESPEED_API_KEY=""    # optional: for auto PageSpeed API

Consolidated Runner

qa:all() { qa:code && qa:build && qa:routes / /about /contact /privacy /terms /faq /sitemap.xml /robots.txt /api/health && qa:seo && qa:api /api/health /api/tools && qa:git && qa:smoke; }
qa:full() { qa:all && qa:auth && qa:auth:cookies && qa:lazyload && qa:heavyload && qa:vulns && qa:cleanup && qa:ux:cards && qa:ux:boundaries && qa:ux:animation && qa:database && qa:secure; }

Phase 1: Code Integrity

• npx tsc --noEmit
• npx eslint . --ext .js,.jsx,.ts,.tsx --max-warnings 0
• npm test -- --runInBand --passWithNoTests

qa:code() { npx tsc --noEmit && npx eslint . --ext .js,.jsx,.ts,.tsx --max-warnings 0 && npm test -- --runInBand --passWithNoTests; }

Phase 2: Build Verification

• npm run build succeeds
• SEO pages show ○/● not λ
• Build log has no errors

qa:build() { local log; log="$(mktemp "${TMPDIR:-/tmp}/qa-build.XXXXXX.log")" || return 1; set -o pipefail; npm run build 2>&1 | tee "$log"; local rc=$?; set +o pipefail; [ "$rc" -eq 0 ] && ! grep -qi "error\|failed" "$log"; local ok=$?; rm -f "$log"; return "$ok"; }

Phase 3: API Session & Authentication

• Auth endpoints respond (login, session, logout)
• Protected routes return 401/403
• Session cookie: HttpOnly + Secure + SameSite
• Cookie not expired, Path/Domain correct
• No rate limiting bypass

qa:auth() {
  local F=0
  for ep in /api/auth/login /api/auth/session /api/auth/logout; do
    curl -so /dev/null -w "%{http_code}" "$PROD_URL$ep" | grep -q "200\|401" || { echo "  ✗ $ep unreachable"; ((F++)); }
  done
  curl -so /dev/null -w "%{http_code}" "$PROD_URL/api/protected" | grep -q "401\|403" || echo "  ⚠ Protected route not denying unauthenticated"
  return $F
}
qa:auth:cookies() {
  for ep in /api/auth/session /api/auth/login; do
    curl -sI "$PROD_URL$ep" | grep -i "^set-cookie:" | while IFS= read -r c; do
      echo "  $ep: $(echo "$c" | cut -d= -f1)"
      echo "$c" | grep -qi "HttpOnly" || echo "    ✗ Missing HttpOnly"
      echo "$c" | grep -qi "Secure" || echo "    ✗ Missing Secure"
      echo "$c" | grep -qi "SameSite" || echo "    ⚠ Missing SameSite"
    done
  done
}

Phase 4: Route Regression

• Core pages, sitemap, robots.txt all 200
• URLs use kebab-case, no duplicate slugs
• robots.txt allows indexing
• Sitemap XML valid, all URLs resolve 200

qa:routes() { local F=0; for p; do local C=$(curl -so /dev/null -w "%{http_code}" "$PROD_URL$p"); echo "$C $p"; [ "$C" = "200" ] || ((F++)); done; return $F; }
qa:robots() { curl -s "$PROD_URL/robots.txt" | grep -qi "Disallow: /$" && echo "  ✗ Blocks all crawlers" || echo "  ✓ OK"; }
qa:sitemap() { curl -s "$PROD_URL/sitemap.xml" | python3 -c "import sys,xml.etree.ElementTree as ET; ET.parse(sys.stdin); print('✓ Valid XML')"; }

Phase 5: SEO — Tags, Images, Favicon, Slugs

• <title> 30–60 chars, unique per page
• <meta name="description"> in raw HTML
• og:title matches <title>, og:url matches canonical
• og:image ≥ 1200×630px, absolute URL, loads 200
• twitter:card = summary_large_image
• Canonical self-referencing, no duplicates
• /favicon.ico 200, apple-touch-icon present
• hreflang tags if multilingual
• JSON-LD structured data present
• Slugs: kebab-case, < 80 chars, no stop words

qa:seo() {
  local H=$(curl -s "$PROD_URL"); local F=0
  for t in "og:title" "og:description" "og:image" "twitter:card" "canonical" "description"; do echo "$H" | grep -qi "$t" || { echo "  ✗ $t"; ((F++)); }; done
  echo "$H" | grep -qi "<title>" || { echo "  ✗ <title>"; ((F++)); }
  local T=$(echo "$H" | grep -oP '<title>\K[^<]+'); local L=${#T}; [ $L -ge 30 -a $L -le 60 ] || echo "  ⚠ Title ${L}chars (target 30-60)"
  curl -so /dev/null -w "%{http_code}" "$PROD_URL/favicon.ico" | grep -q 200 || echo "  ⚠ No favicon.ico"
  return $F
}
qa:seo:ogimage() {
  local I=$(curl -s "$PROD_URL" | grep -oP 'og:image" content="\K[^"]+'); [[ "$I" =~ ^http ]] || I="$PROD_URL$I"
  curl -so /dev/null -w "%{http_code}" "$I" | grep -q 200 || { echo "  ✗ og:image returns non-200"; return 1; }
  command -v identify &>/dev/null && curl -s "$I" | identify -format "%wx%h" - 2>/dev/null | grep -qP "12\d{2}x6\d{2}" && echo "  ✓ ≥ 1200x630" || echo "  ⚠ Install imagemagick to check dimensions"
}

Phase 6: API Route Behavior

• Correct status codes + Content-Type
• Errors return consistent JSON { error, message }
• Response times < 200ms
• CORS headers correct (if cross-origin)

qa:api() {
  for p; do
    local R=$(curl -so /dev/null -w "%{http_code} %{content_type}" "$PROD_URL$p")
    echo "  $p → $R"
  done
  local E=$(curl -s "$PROD_URL/api/nonexistent")
  echo "$E" | python3 -c "import sys,json; d=json.load(sys.stdin); assert 'error' in d; print('✓ Consistent errors')" 2>/dev/null || echo "  ⚠ Inconsistent error shape"
}

Phase 7: Git Hygiene

• No secrets/credentials in diff
• No .next/node_modules staged
• Commit: type(scope): message

qa:git() {
  local S=$(git diff HEAD 2>/dev/null | grep -i "password\|secret\|api_key\|localhost:3000" | grep "^+")
  [ -n "$S" ] && { echo "  ✗ Secrets in diff!"; echo "$S"; return 1; } || echo "  ✓ No secrets"
  local A=$(git status --short 2>/dev/null | grep -E "\.next|node_modules" | head -3)
  [ -n "$A" ] && echo "  ⚠ Build artifacts:" && echo "$A" || echo "  ✓ No artifacts"
}

Phase 8: Post-Deployment Smoke Test

• Homepage 200, key pages 200
• OG image loads 200
• No console errors (manual)
• Auth flow works (manual)

qa:smoke() {
  curl -sI "$PROD_URL" | head -1 | grep -q "200" && echo "  ✓ Homepage" || echo "  ✗ Homepage"
  curl -sI "$PROD_URL/sitemap.xml" | head -1 | grep -q "200" && echo "  ✓ Sitemap" || echo "  ✗ Sitemap"
}

Phase 9: Page Speed, Lazy Load & Bundles

• Lighthouse ≥ 90 (Perf, A11y, SEO)
• FCP < 2.5s, LCP < 4.0s, CLS < 0.1
• Images lazy-loaded (loading="lazy"), WebP/AVIF
• Dynamic imports for heavy components
• Largest JS chunk < 200KB gzipped
• font-display: swap, no FOIT
• Total page weight < 1MB

qa:lazyload() {
  local N=$(grep -r "loading=" app/ --include="*.tsx" 2>/dev/null | grep -c "lazy" || true)
  echo "  Lazy images: $N"
  grep -rn "next/dynamic\|dynamic((" app/ --include="*.tsx" 2>/dev/null | head -5 | grep . || echo "  ⚠ No dynamic imports"
}
qa:heavyload() {
  ls -lhS .next/static/chunks/*.js 2>/dev/null | head -5
  local W=$(curl -so /dev/null -w "%{size_download}" "$PROD_URL" 2>/dev/null || echo 0)
  echo "  HTML weight: ~$((W/1024))KB"
  echo "  ⚠ Run 'npx lighthouse $PROD_URL --view' for full weight analysis"
}
# PageSpeed: open "https://pagespeed.web.dev/?url=$PROD_URL"

Phase 10: Cleanup & Vulnerability Scan

• npm prune, depcheck — no unused deps
• No console.log/debugger in staged code
• npm audit — zero critical/high vulnerabilities
• No eval/new Function/document.write
• TODOs resolved

qa:vulns() {
  npm audit 2>/dev/null | grep -E "critical|high" | grep . && echo "  ✗ Vulnerabilities!" || echo "  ✓ No critical/high vulns"
  npm outdated 2>/dev/null | head -5 | grep . || echo "  ✓ All up to date"
  local D=$(grep -rn "eval(\|new Function(\|document.write(" app/ src/ --include="*.ts" --include="*.tsx" 2>/dev/null | head -5)
  [ -n "$D" ] && echo "  ⚠ Dangerous patterns:" && echo "$D" || echo "  ✓ No dangerous patterns"
}
qa:cleanup() {
  local D=$(git diff --cached 2>/dev/null | grep "^+" | grep -i "console\.log\|debugger" | head -5)
  [ -n "$D" ] && echo "  ✗ Debug artifacts:" && echo "$D" || echo "  ✓ No debug artifacts"
  local T=$(git diff --cached 2>/dev/null | grep "^+" | grep -i "TODO\|FIXME\|HACK" | head -5)
  [ -n "$T" ] && echo "  ⚠ TODOs remain:" && echo "$T"
}

Phase 11: UI/UX — Cards, Animation, Error Boundaries

• Cards: equal height grid, no overlap, text ellipsis, responsive (1→2→3 col)
• No horizontal scroll at any viewport (320–1440px)
• Images: consistent aspect-ratio + object-fit: cover
• Touch targets ≥ 44×44px
• Animations use transform+opacity only (not layout props)
• prefers-reduced-motion respected
• Error boundaries at root + route level (app/error.tsx, app/global-error.tsx)
• app/not-found.tsx and app/loading.tsx exist
• All client fetches show loading + error + empty states
• Buttons: hover, focus-visible, active, disabled, loading states
• Forms disable submit on click (no double-submit)

qa:ux:cards() {
  local E=$(grep -rn "text-overflow\|line-clamp\|truncate" app/ --include="*.css" --include="*.tsx" 2>/dev/null | head -3)
  [ -n "$E" ] && echo "  ✓ Text overflow handling" || echo "  ⚠ No text overflow handling"
  local A=$(grep -rn "aspect-\|object-fit" app/ --include="*.css" --include="*.tsx" 2>/dev/null | head -3)
  [ -n "$A" ] && echo "  ✓ aspect-ratio/object-fit used" || echo "  ⚠ No aspect-ratio set"
}
qa:ux:boundaries() {
  for f in app/error.tsx app/global-error.tsx app/not-found.tsx app/loading.tsx; do
    [ -f "$f" ] && echo "  ✓ $f" || echo "  ⚠ Missing $f"
  done
}
qa:ux:animation() {
  local A=$(grep -rn "animation.*width\|transition.*height\|@keyframes.*top\|@keyframes.*margin" app/ --include="*.css" --include="*.tsx" 2>/dev/null | head -5)
  [ -n "$A" ] && echo "  ⚠ Layout-triggering animations:" && echo "$A" || echo "  ✓ No layout-triggering animations"
  local P=$(grep -r "@media.*prefers-reduced-motion" app/ --include="*.css" --include="*.tsx" 2>/dev/null | head -3)
  [ -n "$P" ] && echo "  ✓ prefers-reduced-motion found in CSS" || echo "  ⚠ No prefers-reduced-motion in CSS"
}

Phase 12: Database & Data Layer

• Connection pool configured (no starvation)
• Schema in sync with migrations
• Indexes on all queried columns, no N+1
• No hardcoded DB credentials in source
• No raw SQL injection risk
• No sensitive data leaked in API responses
• Migrations are idempotent

qa:database() {
  local H=$(grep -rn "postgres://\|mysql://\|mongodb://" app/ src/ --include="*.ts" --include="*.tsx" 2>/dev/null | grep -v ".env" | head -5)
  [ -n "$H" ] && { echo "  ✗ Hardcoded DB URL:"; echo "$H"; } || echo "  ✓ No hardcoded DB URLs"
  local R=$(grep -rn "\$queryRaw\|\.raw(" app/ src/ --include="*.ts" --include="*.tsx" 2>/dev/null | head -5)
  [ -n "$R" ] && echo "  ⚠ Raw SQL:" && echo "$R" || echo "  ✓ No raw SQL"
  local N=$(grep -rn "\.findMany\|\.findUnique" app/ src/ --include="*.ts" --include="*.tsx" 2>/dev/null | grep -v "include:" | head -5)
  [ -n "$N" ] && echo "  ⚠ Possible N+1:" && echo "$N" || echo "  ✓ No N+1 patterns"
}
qa:db:migrations() {
  [ -d "prisma/migrations" ] && echo "  ✓ Prisma: $(ls prisma/migrations 2>/dev/null | wc -l) migrations" || echo "  - No prisma migrations dir"
  local M=$(ls db/migrations/*.sql 2>/dev/null | head -5); [ -n "$M" ] && echo "  ✓ SQL migrations:" && echo "$M" || echo "  - No SQL migration files"
}

Phase 13: Secure Data Rendering

• No secrets/tokens in client source or localStorage
• No dangerouslySetInnerHTML without DOMPurify
• API errors don't leak stack traces
• Internal IDs use UUIDs not auto-increment
• User emails masked in UI
• NEXT_PUBLIC_ vars contain no secrets

qa:secure() {
  local S=$(git grep -n "api_key\|API_KEY\|secret_key\|PRIVATE_KEY" -- ':!*.env*' ':!*test*' 2>/dev/null | head -5)
  [ -n "$S" ] && echo "  ✗ Secrets in source:" && echo "$S" || echo "  ✓ No hardcoded secrets"
  local D=$(grep -rn "dangerouslySetInnerHTML" app/ src/ --include="*.tsx" 2>/dev/null | head -5)
  [ -n "$D" ] && echo "  ⚠ XSS risk — use DOMPurify:" && echo "$D" || echo "  ✓ No dangerouslySetInnerHTML"
  local T=$(grep -rn "localStorage\|sessionStorage" app/ src/ --include="*.ts" --include="*.tsx" 2>/dev/null | grep -i "token\|jwt\|secret" | head -5)
  [ -n "$T" ] && echo "  ⚠ Tokens in storage — use httpOnly cookies:" && echo "$T" || echo "  ✓ No tokens in storage"
  curl -s "$PROD_URL/api/nonexistent" 2>/dev/null | grep -qi "stack\|Error:" && echo "  ✗ Stack trace leak" || echo "  ✓ No stack leak"
}

Pre-Commit Hook

cat > .git/hooks/pre-commit << 'EOF'
#!/bin/sh
npx tsc --noEmit || exit 1
npx eslint . --ext .js,.jsx,.ts,.tsx --max-warnings 0 || exit 1
EOF
chmod +x .git/hooks/pre-commit

CI/CD (GitHub Actions)

name: QA
on: [push, pull_request]
jobs:
  qa:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
      - run: npm ci
      - run: npx tsc --noEmit
      - run: npx eslint . --ext .js,.jsx,.ts,.tsx --max-warnings 0
      - run: npm test -- --runInBand --passWithNoTests
      - run: npm run build

Best Practices

Common Pitfalls

Security Notes

• All qa:* functions are read-only (tsc, lint, test, build, curl, grep)
• PROD_URL and QA_AUTH_HEADER only for environments you own
• Basic secret scanning in git diff — for prod, use trufflehog/git-secrets
• Auth tests with real credentials against prod is destructive — use staging

Limitations

• Passing all phases reduces risk but doesn't eliminate production bugs
• Some checks depend on project-specific tooling (Prisma, NextAuth, etc.)
• Manual UX testing still required for critical user journeys
• SEO checks verify raw HTML only — not social preview rendering
• Route checks verify status codes, not content correctness

Master Checklist

Phase 1: Code

• tsc --noEmit, eslint, npm test pass

Phase 2: Build

• npm run build succeeds, no errors, pages static

Phase 3: Auth

• Endpoints respond, protected routes denied, secure cookies

Phase 4: Routes

• All core pages 200, sitemap valid, robots.txt correct

Phase 5: SEO

• title, description, og:*, twitter:card, canonical, favicon, slugs

Phase 6: API

• Status, Content-Type, consistent errors, timing

Phase 7: Git

• No secrets, no artifacts, conventional commit

Phase 8: Smoke

• Homepage + key pages 200, og:image loads

Phase 9: Speed

• Lighthouse ≥ 90, lazy images, dynamic imports, font-display: swap

Phase 10: Clean

• No vulns, no debug artifacts, unused deps pruned

Phase 11: UI/UX

• Cards responsive, error boundaries, button states, reduced-motion

Phase 12: Database

• Indexes, no N+1, no hardcoded URLs, no sensitive leaks

Phase 13: Secure Rendering

• No secrets in client, no XSS, no stack leaks, UUIDs