make-error-cause

Creating Custom Error Classes

This feature allows you to create custom error classes that can encapsulate an original error. The custom error class extends from `makeErrorCause.BaseError`, which helps in maintaining the original error's stack trace and context.

const makeErrorCause = require('make-error-cause');

class MyCustomError extends makeErrorCause.BaseError {
  constructor(message, cause) {
    super(message, cause);
    this.name = 'MyCustomError';
  }
}

try {
  throw new Error('Original error');
} catch (err) {
  throw new MyCustomError('Custom error message', err);
}

Preserving Original Error Cause

This feature demonstrates how to preserve the original error cause when throwing a new custom error. This is useful for debugging and logging, as it provides a complete error stack trace.

const makeErrorCause = require('make-error-cause');

class DatabaseError extends makeErrorCause.BaseError {
  constructor(message, cause) {
    super(message, cause);
    this.name = 'DatabaseError';
  }
}

try {
  throw new Error('Connection failed');
} catch (err) {
  throw new DatabaseError('Database operation failed', err);
}