I'm trying out the URLPattern class in Node v23.10, installed with nvm

When I ran the following in the cli or as an executable

const p = new URLPattern({pathname: 'annotations/:id'})

I got this

Uncaught ReferenceError: URLPattern is not defined

I understand this is an experimental feature, but there's no guidance in the docs and examples I've read as to what flag(s) to run this script with.

I'm trying out the URLPattern class in Node v23.10, installed with nvm

When I ran the following in the cli or as an executable

const p = new URLPattern({pathname: 'annotations/:id'})

I got this

Uncaught ReferenceError: URLPattern is not defined

I understand this is an experimental feature, but there's no guidance in the docs and examples I've read as to what flag(s) to run this script with.

• javascript
• node.js

• Have you checked node --help and see if there's a relevant flag? – Evert Commented Mar 14 at 17:17
• I've never done that. Thanks for the tip, @Evert – ፍፁም Commented Mar 14 at 17:28

1 Answer 1

Node.js' API documentation really doesn't seem to explain this, but the release notes for Node.js 23.8.0, where it was introduced, do:

The URLPattern constructor is exported from the node:url module and will be available as a global in Node.js 24.

I.e., in Node.js 23.8.0 and above, you can access it by requiring the node:url module:

const URLPattern = require('node:url').URLPattern;
const p = new URLPattern({pathname: 'annotations/:id'});