Cypress PollyJS fetch mock

mockVisit.js

const uuidV4 = require('uuid/v4');
import { Polly } from '@pollyjs/core';
import FetchAdapter from '@pollyjs/adapter-fetch';
import LocalStoragePersister from '@pollyjs/persister-local-storage';

Polly.register(FetchAdapter);
Polly.register(LocalStoragePersister);

Cypress.Commands.add('mockVisit', (url, mocks = () => null, options) => {
  return cy.visit(
    url,
    Object.assign({}, options, {
      onBeforeLoad: win => {
        const polly = new Polly(`polly-recording-${uuidV4()}`, {
          persister: 'local-storage',
          adapters: ['fetch'],
          adapterOptions: {
            fetch: {
              context: win
            }
          },
          persisterOptions: {
            'local-storage': {
              context: win
            }
          }
        });
        mocks(polly);
      }
    })
  );
});