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Custom Error Classes - Error Handling | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Custom Error Classes

Create domain-specific errors

Extend the Error class to create custom error types for your application. This helps callers handle specific error cases.

class ValidationError extends Error {
  constructor(message) {
    super(message);
    this.name = "ValidationError";
  }
}

throw new ValidationError("Email is invalid");

Custom errors make your API clearer and debugging easier.