在 ES6 模块中使用新的实验性 Node 的 EventTarget 类

Question

I'd like to try the new DOM-compatible EventTarget class which is available as of Node.js 14.7.0 .

I'm only able to do so if I use it from a CommonJS module, but not from an ES6 module. For example:

Running node --expose-internals test.js works, where test.js is:

const { Event, EventTarget } = require('internal/event_target');

const et = new EventTarget();

If I use it from an ES6 module, I'm getting an error:

test.mjs :

import { Event, EventTarget } from 'internal/event_target';

const et = new EventTarget();

Running node --expose-internals test.mjs fails with:

SyntaxError: The requested module 'internal/event_target' does not provide an export named 'Event'

Is there a way to make it work with ES6?

Answer 1

It looks like it only exposes a default export which is an object, not named exports. So you have to import the default and then use destructuring:

import event_target from 'internal/event_target';
const { Event, EventTarget } = event_target;

const et = new EventTarget();