This crate implements WebIDL for Deno. It consists of infrastructure to do ECMA -> WebIDL conversions.

Spec: https://webidl.spec.whatwg.org/

From javascript, include the extension's source, and assign the following to the global scope:

import * as webidl from "ext:deno_webidl/00_webidl.js";
Object.defineProperty(globalThis, webidl.brand, {
  value: webidl.brand,
  enumerable: false,
  configurable: true,
  writable: true,
});

Then from rust, provide init_webidl::init_webidl::init_ops_and_esm() in the extensions field of your RuntimeOptions