Courses / Node.js
23. Error-handling middleware in Express
Create middleware with four arguments (err, req, res, next) to centralize error responses.
JavaScript
Error-handling middleware in Express
A special middleware function with signature (err, req, res, next) that centralizes how an Express app responds to errors.
"I want one place to format and log every server error instead of sprinkling try/catch everywhere."
Error-handling middleware is an Express middleware function with four arguments (err, req, res, next) that receives errors passed via next(err) or thrown in async handlers and decides how to respond and log them.
"I want one place to format and log every server error instead of sprinkling try/catch everywhere."
Error-handling middleware is an Express middleware function with four arguments (err, req, res, next) that receives errors passed via next(err) or thrown in async handlers and decides how to respond and log them.