An Express library for centralized error handling
Express apps often end up with scattered error handling. Try catch in routes, inconsistent responses, duplicated logic. Centralizing this logic can make apps more predictable and easier to maintain.
I published a open source error handling library called ds-express-errors that tries to address these issues in a structured, minimal way.
Here is what it provides:
Centralized error middleware added after all routes, so error handling logic is not duplicated across the app.
Preset standard HTTP error classes like 4xx, 5xx that can be thrown directly from handlers.
Automatic mapping of common library errors such as Zod, Joi, Prisma, Mongoose, Sequelize and JWT into consistent HTTP responses.
Support for async and await errors so rejected promises are handled safely.
Built-in logging with optional integration of external loggers like Winston or Pino.
Full customization of error responses and formats to match any API standard or project requirements.
Global handlers for `uncaughtException` and `unhandledRejection`, with support for graceful shutdown including cleanup logic and server closure.
Basic usage is minimal. Install the package and register a single error middleware at the end of the Express app.
π Official website & documentation: ds-express-errors
I am curious how others structure error handling in Express applications.
Do you prefer using centralized middleware or individual try/catch in routes?
How do you structure logging and responses for async errors in your apps?
How do you usually handle error handling in larger Express apps?
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