I am trying to import the npm package superagent-throttle in my TypeScript project, but when I do so I get this message:

Uncaught TypeError: Class extends value #<Object> is not a constructor or null

If I use require it works fine:

const Throttle = require("superagent-throttle");

But, I've started using Vite which does not allow require so I have to use import instead.

The code where I reference it wants to instantiate a class ie:

        this.throttle = new Throttle({
            // set false to pause queue
            active: true,
            // how many requests can be sent every `ratePer`
            rate: 10000,
            // number of ms in which `rate` requests may be sent
            ratePer: 1000,
            // How many requests can be sent concurrently
            concurrent: 2
        });

I have tried different variations of the import statement, but none of these work for me:

import { Throttle } from "superagent-throttle";
import Throttle from "superagent-throttle";
import * as Throttle from "superagent-throttle";

They all give the same result - they compile ok but fail at runtime with the same error message (as above).

The code in the superagent-throttle JS file looks rather obscure, I have no idea what it's trying to do, so I'm struggling to try and understand how I could fix this issue:

Package file: node_modules/superagent-throttle/dist/index.js:

'use strict';

var _events = require('events');

var _events2 = _interopRequireDefault(_events);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
...
class Throttle extends _events2.default {
  constructor(options) {
    super();
    // instance properties
    this._options({
      _requestTimes: [0],
      _current: 0,
      _buffer: [],
      _serials: {},
      _timeout: false
    });
... etc ...