Error Handling in Node.js
summary
Practical rules and concrete code: use Express middleware and the Callback pattern everywhere, use error objects not strings so stack traces travel, wrap JSON.parse in try catch, build custom error classes that carry metadata and i18n via the Kraken Babel-style getMessage, log and aggregate client and server errors, normalize responses with a single response handler, call next(err) and return from middleware, and on process.on('uncaughtException') always process.exit after logging to avoid leaked connections.
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chapters (12)
- 0:00Start
- 7:30Best Practices for Handling Errors
- 8:48Try Catch
- 9:42Callback Pattern
- 11:57Creating Custom Error Objects
- 12:37Custom Errors
- 13:38Conventions
- 14:02Deal with Error Objects
- 16:13Helper Function
- 19:07Basic Error Handler
- 20:23Custom Error Objects
- 21:18Error Handler
