Courses / Node.js
40. Error classification and custom Error types
Create and use custom Error subclasses to represent domain vs system errors for consistent handling.
JavaScript
Error classification and custom Error types
Creating specialized Error subclasses to distinguish domain (business) errors from system errors for consistent handling.
"I need to know whether an error is something the user did (domain) or something I should log and retry (system)."
Define custom Error subclasses (e.g., ValidationError, DatabaseError) so code can catch, inspect, and respond differently to known domain vs unexpected system failures.
"I need to know whether an error is something the user did (domain) or something I should log and retry (system)."
Define custom Error subclasses (e.g., ValidationError, DatabaseError) so code can catch, inspect, and respond differently to known domain vs unexpected system failures.