🔍 DEEP SCAN - V1 Pre-Launch Readiness Guide

March 30, 2026 · View on GitHub

Quick Start
Installation
Running Scans
Understanding Results
Pre-Launch Checklist
Troubleshooting
Tool Reference

Quick Start

🚀 Run Pre-Launch Deep Scan (Recommended for V1)

# Full comprehensive scan (2-4 hours)
npm run scan:pre-launch

# Quick mode (30-60 minutes)
npm run scan:pre-launch:quick

📊 Check Results

# Results are saved in:
deep-scan-reports/pre-launch-YYYY-MM-DDTHH-MM-SS/

# Read these files in order:
1. SUMMARY.md          - Overall pass/fail status
2. RECOMMENDATIONS.md  - What needs fixing
3. *.log               - Detailed logs of each check

Installation

Prerequisites

Node.js >= 18
npm >= 8
PowerShell 7+ (for Windows)

Install Dependencies

# Install all tools
npm install

# Verify installation
npm run scan:verify

Installed Tools

The following tools are automatically installed:

Tool	Purpose	Version
madge	Circular dependency detection	Latest
jscpd	Code duplication detection	Latest
@next/bundle-analyzer	Bundle size analysis	Latest
eslint-plugin-security	Security vulnerability detection	Latest
eslint-plugin-sonarjs	Code quality & bug detection	Latest
eslint-plugin-promise	Async/await best practices	Latest
eslint-plugin-import	Module organization	Latest
eslint-plugin-react-hooks	React Hooks rules	Latest

Running Scans

1. Pre-Launch Scan (V1 Readiness)

Use this before launching to production!

# Full scan (2-4 hours) - Recommended
npm run scan:pre-launch

# Quick scan (30-60 min) - For iteration
npm run scan:pre-launch:quick

# With verbose output
npm run scan:pre-launch -- --verbose

What it checks:

✅ Standard & Deep ESLint (security, quality, React)
✅ Strict TypeScript checking (ALL flags)
✅ Security audit (npm audit)
✅ Circular dependencies
✅ Code duplication (>5 lines)
✅ Custom deep code review
✅ Bug debugger deep scan
✅ Production build verification

Output:

deep-scan-reports/pre-launch-2026-03-29T10-30-18/
├── SUMMARY.md              # START HERE
├── RECOMMENDATIONS.md      # ACTION ITEMS
├── summary.json            # Machine-readable
├── standard-eslint.log
├── deep-eslint-all-rules.log
├── strict-typescript-check.log
├── npm-audit-production.log
├── circular-dependencies.log
├── code-duplication-detection.log
├── custom-deep-code-review.log
└── production-build.log

2. Daily Development Scans

Fast checks for daily commits:

# Standard linting (< 1 minute)
npm run lint

# Type checking (< 1 minute)
npm run type-check

3. Pre-PR Scans

Before creating a pull request:

# Deep linting with ALL rules (5-10 min)
npm run lint:deep

# Strict type checking (2-5 min)
npm run type-check:strict

# Check circular dependencies (1-2 min)
npm run analyze:deps

# Check code duplication (1-2 min)
npm run analyze:duplication

4. Weekly Deep Scans

Run on Sunday nights:

# True deep scan (1-2 hours)
npm run scan:deep

# Quick version (30 min)
npm run scan:quick

# Custom code review (1-2 hours)
npm run scan:code

Understanding Results

Exit Codes

Code	Meaning	Action
`0`	✅ All required checks passed	Safe to proceed
`1`	❌ Required checks failed	Must fix before launch

Result Files

1. SUMMARY.md

What it shows:

Overall pass/fail status
Duration of each check
Phase-by-phase breakdown
Which checks passed/failed

Example:

# Pre-Launch Deep Scan Summary

**Status:** ✅ PASSED

- **Duration:** 120.5 minutes
- **Passed:** 12/14 checks

## Phase 1: Static Analysis
✅ Standard ESLint (8.4s)
❌ Deep ESLint (18.2s) [optional]
✅ Strict TypeScript Check (45.1s)

2. RECOMMENDATIONS.md

What it shows:

Critical issues that MUST be fixed
Optional improvements
Pre-launch checklist
Next steps

Example:

# Pre-Launch Recommendations

## ⚠️ Critical Issues (MUST FIX)

### Deep ESLint (All Rules)
- Check log file: `deep-eslint-all-rules.log`
- Exit code: 1
- Found 15 security issues

## 📋 Optional Improvements
...

3. Individual Log Files

Each check saves detailed output:

standard-eslint.log - Standard lint errors/warnings
strict-typescript-check.log - Type errors
npm-audit-production.log - Dependency vulnerabilities
etc.

Pre-Launch Checklist

Phase 1: Run Scans (2-4 hours)

# Run full pre-launch scan
npm run scan:pre-launch

Wait for completion, then:

Check SUMMARY.md - Did scan pass?
Read RECOMMENDATIONS.md - Any critical issues?
Review failed check logs
Note all issues to fix

Phase 2: Fix Critical Issues

Address all REQUIRED check failures:

TypeScript Errors

# See errors
npm run type-check:strict

# Fix one by one
# Re-run to verify
npm run type-check:strict

Security Vulnerabilities

# Check severity
npm audit

# Fix high/critical
npm audit fix

# Manual fixes if needed
npm install package@latest

Circular Dependencies

# Find circles
npm run analyze:deps

# Refactor to break cycles
# Re-run to verify
npm run analyze:deps

Build Failures

# Try build
npm run build

# Fix errors
# Retry
npm run build

Phase 3: Re-Run Scan

# Verify all fixes
npm run scan:pre-launch

All required checks pass
No critical issues remain
Build succeeds

Phase 5: Configuration Verification

Check all environment variables:

# Required in .env
DATABASE_URL=
DIRECT_URL=
NEXTAUTH_URL=
NEXTAUTH_SECRET=
GOOGLE_CLIENT_ID=
GOOGLE_CLIENT_SECRET=
CLOUDINARY_API_KEY=
CLOUDINARY_API_SECRET=
NEXT_PUBLIC_CLOUDINARY_CLOUD_NAME=
RAZORPAY_KEY_ID=
RAZORPAY_KEY_SECRET=
NEXT_PUBLIC_RAZORPAY_KEY_ID=
RESEND_API_KEY=
TURNSTILE_SITE_KEY=
TURNSTILE_SECRET_KEY=
NEXT_PUBLIC_TURNSTILE_SITE_KEY=
UPSTASH_REDIS_REST_URL=
UPSTASH_REDIS_REST_TOKEN=
SENTRY_DSN=
NEXT_PUBLIC_SENTRY_DSN=

Verify configurations:

Phase 8: Monitoring & Backups

Sentry error tracking working
Vercel analytics enabled
Database backup scheduled (Supabase)
Log monitoring configured
Uptime monitoring (optional)
Alert channels configured

Phase 9: Staging Deployment

# Deploy to staging/preview
git push origin main

# Test in staging
# - All features work
# - No console errors
# - Performance acceptable
# - Mobile responsive

Phase 10: Production Launch! 🚀

Troubleshooting

Scan Takes Too Long

# Use quick mode
npm run scan:pre-launch:quick

# Or skip specific parts
npm run scan:pre-launch -- --skip-build
npm run scan:pre-launch -- --skip-optional

Out of Memory

# Increase Node.js memory (Windows PowerShell)
$env:NODE_OPTIONS="--max-old-space-size=4096"
npm run scan:pre-launch

# Linux/Mac
NODE_OPTIONS="--max-old-space-size=4096" npm run scan:pre-launch

Deep ESLint Fails Everywhere

This is expected! Deep ESLint is intentionally strict for pre-release audits.

For daily development:

npm run lint  # Use standard config

For pre-release only:

npm run lint:deep  # Use deep config

Deep config catches issues that standard config ignores:

Security vulnerabilities
Complex code (cognitive complexity)
Missing React cleanup
Promise handling issues
etc.

Strategy:

Run deep ESLint before release
Fix critical security issues
Ignore style/preference warnings (if acceptable)
Re-run to verify fixes

Circular Dependencies Found

# Visualize dependencies
npm run analyze:deps

# Generate graph image (requires Graphviz)
npx madge --image deps.png src

How to fix:

Identify the cycle (A → B → C → A)
Extract shared code to new file
Use dependency injection
Refactor to break cycle

Example:

// Before (circular)
// auth.ts imports user.ts
// user.ts imports auth.ts

// After (fixed)
// Create shared-types.ts
// auth.ts imports shared-types.ts
// user.ts imports shared-types.ts

Code Duplication Detected

# Find duplicates
npm run analyze:duplication

# Output shows:
# - Duplicated code blocks
# - Files with duplication
# - % of codebase duplicated

How to fix:

Extract duplicate code to shared function
Move to src/lib/utils.ts or component
Import and reuse

Target: < 5% duplication

Build Fails

# Try building
npm run build

# Common issues:
# 1. TypeScript errors → npm run type-check
# 2. Missing env vars → Check .env
# 3. Prisma not generated → npm run db:generate
# 4. Import errors → Check paths

Tool Reference

Scan Commands

Command	Duration	Use Case
`npm run scan:pre-launch`	2-4 hours	V1 launch readiness
`npm run scan:pre-launch:quick`	30-60 min	Faster iteration
`

ESLint Configurations

Standard (`eslint.config.mjs`)

Basic TypeScript rules
Fast (< 1 minute)
For daily development

npm run lint

Deep (`eslint.deep.config.mjs`)

ALL strict rules
Security + Quality + React
Slow (5-10 minutes)
For pre-release only

npm run lint:deep

Deep config includes:

50+ security patterns
20+ code quality patterns
15+ React patterns
10+ async/await patterns
Complexity limits
Function size limits
Nesting depth limits

Analysis Tools

Madge (Dependency Analysis)

# Find circular dependencies
npm run analyze:deps

# Generate dependency graph
npx madge --json src > deps.json
npx madge --image deps.png src  # Requires Graphviz

JSCPD (Duplication Detection)

# Find duplicated code
npm run analyze:duplication

# Custom thresholds
npx jscpd src --min-lines 10 --min-tokens 100

Best Practices

When to Run Each Scan

Daily (Before Commit):

npm run lint
npm run type-check

Before PR:

npm run lint:deep
npm run type-check:strict

Weekly (Sunday Night):

npm run scan:deep

Before Release:

npm run scan:pre-launch

Before V1 Launch:

npm run scan:pre-launch
# + Manual testing
# + Configuration check
# + Security audit
# + Performance testing

Recommended Workflow

Feature Development

# Develop feature
npm run lint
npm run type-check
git commit

Before PR

npm run lint:deep
npm run type-check:strict
# Fix issues
git push

Weekly Maintenance

npm run scan:deep
# Review results
# Fix critical issues

Pre-Release

npm run scan:pre-launch
# Fix all required checks
# Re-run until pass
# Deploy to staging
# Manual testing

V1 Launch

npm run scan:pre-launch
# Complete checklist
# Deploy to production
# Monitor 24 hours

FAQ

Q: How long does the pre-launch scan take?

A: 2-4 hours for full scan, 30-60 minutes for quick mode.

Q: Can I skip some checks?

A: Yes, use --skip-optional flag. Required checks cannot be skipped.

Q: What if a required check fails?

A: You must fix it before launching. Check the log file for details.

Q: Should I fix all ESLint deep warnings?

A: Fix all security issues. Other warnings are optional but recommended.

Q: How often should I run deep scans?

A: Weekly deep scan, full pre-launch scan before each release.

Q: Can I run scans in CI/CD?

A: Yes, use npm run scan:quick for PR checks.

Q: What's the difference between scan:deep and scan:pre-launch?

A: scan:pre-launch includes additional checks and generates actionable recommendations.

Q: Is it safe to commit with ESLint deep warnings?

A: Yes, if you've reviewed them. Deep config is very strict.

Q: How do I interpret circular dependency warnings?

A: Check analyze:deps output. Refactor to extract shared code.

Q: What if the scan crashes?

A: Check memory limits. Increase Node.js memory or use quick mode.

Support

Documentation

Full Guide: docs/DEEP_SCAN_GUIDE.md
Quick Reference: docs/DEEP_SCAN_QUICK_REF.md
This File: DEEPSCAN.md

Getting Help

Check troubleshooting section above
Review log files in deep-scan-reports/
Run npm run scan:verify to check setup
Check individual tool docs (ESLint, madge, etc.)

Version History

v1.0.0 (2026-03-29) - Initial release
- Pre-launch deep scan
- Deep ESLint config
- Analysis tools integration
- Comprehensive documentation

Last Updated: 2026-03-29
Maintainer: PGLife Team
Status: Production Ready ✅