ds-express-errorsInstallation
Get started with ds-express-errors in seconds.
Install via NPM
npm install ds-express-errorsCurrent latest version:
Basic Setup
Integrate the global error handler into your Express application.
Warning
The errorHandler middleware must be defined last, after all other routes and middleware.
About Environment and Prod vs Dev Responses
By default, the library relies on the NODE_ENV environment variable to format error responses.
If NODE_ENV is not defined, you will receive sanitised error messages, as the library behaves as if the environment were set to production.
To see how Production and Development responses differ, visit the Configuration part
See the devEnvironments property to customize which environments should display full error information (stack traces and full error messages)
Good to know
If you use only errorHandler the library would perform only duck-typing checks.
Want strict checks? Visit Configuration part. There you will find config property errorClasses.
import express from 'express'
import { errorHandler } from 'ds-express-errors'
const app = express();
// ... define your routes here ...
// Add Error Handler at the very end
app.use(errorHandler);
app.listen(3000, () => {
console.log('Server is running');
});Have some ideas? Find something missing? or Bug?
Share your suggestions with us!Want to see ds-express-errors in actions? Watch the video tutorial on YouTube.
The video covers:
- Global Express.js error handling with
errorHandler - Automatic error recognition
- Duck typing and strict error detection
- Selecting library mappers with
needMappers - Passing original library objects through
errorClasses - Strict Prisma and Zod error handling
- Custom API response structures with
formatError - Creating a JSON:API-style error response
- Using the
err,req, andisDevparameters - Configuring development environments with
devEnvironments - Protecting sensitive error details in production
- Development and production error responses
Good to know
This video was recorded before version 1.9.2, which reduced excessive production response sanitization. This does not affect the video or its relevance. Just keep in mind that production error responses are now clearer and more informative than they were at the time of recording.