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node-domexception

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node-domexception

An implementation of the DOMException class from NodeJS


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What is node-domexception?

The node-domexception package provides a way to handle DOMException objects in Node.js environments, similar to how they are handled in web browsers. This package is useful for projects that need to simulate browser-like handling of exceptions, particularly in testing environments or server-side applications that interact with web APIs.

What are node-domexception's main functionalities?

Creating DOMException objects

This feature allows developers to create instances of DOMException with a custom message and name, mimicking the behavior seen in web browsers. It is particularly useful for throwing and catching specific types of exceptions in Node.js applications.

const DOMException = require('node-domexception');

const exception = new DOMException('An error occurred', 'NotFoundError');
console.log(exception.name); // Outputs: NotFoundError
console.log(exception.message); // Outputs: An error occurred

Checking instance of DOMException

This feature enables developers to check if an object is an instance of DOMException. This is useful for error handling and control flow in applications that need to differentiate between exception types.

const DOMException = require('node-domexception');

const exception = new DOMException('Failed operation', 'SecurityError');
if (exception instanceof DOMException) {
  console.log('Caught a DOMException');
}

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Package last updated on 17 Jul 2023

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