Cleaning Stack Traces in Custom Errors

Snippet

Cleaning Stack Traces in Custom Errors

In Node.js (V8), Error.captureStackTrace allows you to hide the internal implementation details of your custom error classes from the stack trace, making logs cleaner and more relevant to the caller.

snippet.js
javascript
class DatabaseError extends Error {
  constructor(message, query) {
    super(message);
    this.query = query;
    if (Error.captureStackTrace) {
      Error.captureStackTrace(this, DatabaseError);
    }
  }
}
 
throw new DatabaseError('Connection lost', 'SELECT * FROM users');

nodejs

Breakdown

Error.captureStackTrace(this, DatabaseError);

Captures the stack trace but excludes the constructor of DatabaseError from the output.

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Cleaning Stack Traces in Custom Errors

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