this[kClient].connect is not a function about corepack HOT 6 CLOSED

import {afterAll, beforeAll, describe, expect, it} from '@jest/globals';
import process from 'node:process';

import { createProxy } from 'proxy'; // Need `yarn add proxy --dev`.
import type { ProxyServer } from 'proxy';

import { fetchAsJson } from '../sources/httpUtils';

describe(`reproduce issue #444`, () => {

  let proxy: ProxyServer;

  beforeAll((done) => {
    proxy = createProxy();
    proxy.listen(done);
  })

  afterAll((done) => {
    proxy.close(done);
  })

  it(`without proxy settings`, async () => {
    await expect(fetchAsJson(`https://registry.npmjs.org/yarn`)).resolves.toEqual(expect.anything());
  });

  it(`with proxy settings`, async () => {
    process.env.HTTPS_PROXY = `http://localhost:${proxy.address().port}`;

    await expect(fetchAsJson(`https://registry.npmjs.org/yarn`)).resolves.toEqual(expect.anything());
    // TODO: Test fails.
    // Received promise rejected instead of resolved
    // Rejected to value: [Error: Error when performing the request to https://registry.npmjs.org/yarn; for troubleshooting help, see https://github.com/nodejs/corepack#troubleshooting]
  });

});