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Specify framework versions
e.g., 'Next.js 14', 'Python 3.11' for accurate, up-to-date code
Request error handling & types
Ask for TypeScript definitions and try-catch blocks
Get step-by-step breakdowns
Request explanations before code for complex logic
Profile and optimize performance. Tools: 1. Chrome DevTools (Performance, Lighthouse). 2. React DevTools Profiler. 3. Node.js --prof and clinic.js. 4. Bundle analysis (webpack-bundle-analyzer). 5. Database query analysis (EXPLAIN). 6. APM tools (New Relic, DataDog). Focus on: render performance, bundle size, API latency, memory usage. Measure before optimizing. Profile in production-like environments.