-> ๐ฌ๐ผ๐๐ฟ ๐ฐ๐ผ๐ฑ๐ฒ ๐๐ผ๐ฟ๐ธ๐ ๐ฝ๐ฒ๐ฟ๐ณ๐ฒ๐ฐ๐๐น๐ ๐ผ๐ป ๐๐ผ๐๐ฟ ๐น๐ฎ๐ฝ๐๐ผ๐ฝ. ๐ฆ๐ต๐ถ๐ฝ๐ ๐๐ผ ๐ฝ๐ฟ๐ผ๐ฑ๐๐ฐ๐๐ถ๐ผ๐ป ๐ผ๐ป ๐๐ฟ๐ถ๐ฑ๐ฎ๐. ๐๐ ๐ ๐ผ๐ป๐ฑ๐ฎ๐ ๐บ๐ผ๐ฟ๐ป๐ถ๐ป๐ด ๐๐ผ๐'๐๐ฒ ๐ด๐ผ๐ ๐ฑ๐ฌ ๐ฎ๐ป๐ด๐ฟ๐ ๐๐๐ฒ๐ฟ๐, ๐๐ฒ๐ฟ๐ผ ๐ฒ๐ฟ๐ฟ๐ผ๐ฟ ๐น๐ผ๐ด๐, ๐ฎ๐ป๐ฑ ๐ฎ๐ฏ๐๐ผ๐น๐๐๐ฒ๐น๐ ๐ป๐ผ ๐ถ๐ฑ๐ฒ๐ฎ ๐๐ต๐ฎ๐ ๐ต๐ฎ๐ฝ๐ฝ๐ฒ๐ป๐ฒ๐ฑ. ๐ฆ๐ผ๐๐ป๐ฑ ๐ณ๐ฎ๐บ๐ถ๐น๐ถ๐ฎ๐ฟ?
-> Errors aren't exceptionsโthey're data. Treat them with the same rigor as your actual data.
I built five layers:
๐ฆ๐๐ฒ๐ฝ ๐ญ: ๐ฆ๐๐ฟ๐๐ฐ๐๐๐ฟ๐ฒ๐ฑ ๐๐ฟ๐ฟ๐ผ๐ฟ ๐๐น๐ฎ๐๐- Created a custom error class with status codes, operational flags, and debugging details. This captures everything needed for proper error handling in one place.
๐ฆ๐๐ฒ๐ฝ ๐ฎ: ๐๐ฟ๐ฟ๐ผ๐ฟ ๐๐ฎ๐ป๐ฑ๐น๐ฒ๐ฟ ๐ ๐ถ๐ฑ๐ฑ๐น๐ฒ๐๐ฎ๐ฟ๐ฒ- Implemented middleware that logs all errors internally. Custom errors return directly to clients. Unexpected errors return generic messages without leaking internals.
๐ฆ๐๐ฒ๐ฝ ๐ฏ: ๐๐๐๐ป๐ฐ ๐๐ฟ๐ฟ๐ผ๐ฟ ๐ช๐ฟ๐ฎ๐ฝ๐ฝ๐ฒ๐ฟ - Created a wrapper that catches errors in async routes and passes them to the error handler, preventing crashes.
๐ฆ๐๐ฒ๐ฝ ๐ฐ: ๐๐๐๐ต ๐ฆ๐ฒ๐ฟ๐๐ถ๐ฐ๐ฒ - Validates input upfront. Uses generic error messages like "invalid email or password" instead of revealing which users exist. Catches database constraint violations gracefully.
๐ฆ๐๐ฒ๐ฝ ๐ฑ: ๐ ๐ถ๐ฑ๐ฑ๐น๐ฒ๐๐ฎ๐ฟ๐ฒ ๐ฆ๐๐ฎ๐ฐ๐ธ - Wired everything in correct order: logging first, routes in the middle, error handling last.
-> ๐ง๐ต๐ฒ ๐ฅ๐ฒ๐๐๐น๐๐
๐๐ฒ๐ณ๐ผ๐ฟ๐ฒ: Silent failures, no logs, 500 errors crash the app.
๐๐ณ๐๐ฒ๐ฟ: Clear errors, full context in logs, graceful degradation, error analytics.
Error handling is the difference between a professional app and a hobby project. Implement this pattern now. Your future self at 2 AM will thank you.
๐๐ต๐ข๐ณ๐ต ๐ต๐ฐ๐ฅ๐ข๐บ.
Code for reference: https://lnkd.in/gS9cCTGf
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