Clean up nock on demand, for example after each test. Helper function for mocha is provided.
npm install --save-dev nock-sandbox
// some-file.spec.js
const nockSandbox = require('nock-sandbox');
describe('Some suite', function() {
// sets up afterEach and beforeEach hooks
// beforeEach hook will prevent net connect except for localhost
// afterEach will check if all nocks have been used - if not, it will cause the test to fail
const nock = nockSandbox.setupForMocha(this);
/* use nock here how you would use normally */
/*
});