Nock

Nock 13.x → 14.x ​

Nock 14 adds support for intercepting Node.js native fetch and drops support for Node.js versions earlier than 18. See the v14.0.0 release notes.

Requirements ​

Nock 14 requires Node.js >=18. Upgrade Node before upgrading Nock if your project uses an older version.

Install Nock 14 with your package manager:

sh
npm install --save-dev nock@14

Native fetch Support ​

Nock 14 can intercept Node.js native fetch requests as well as requests made through Node's HTTP APIs. Existing fetch calls can now be tested with Nock interceptors:

js
import nock from 'nock'

const scope = nock('https://api.example.test')
  .get('/users')
  .reply(200, [{ id: 1, name: 'Ada' }])

const response = await fetch('https://api.example.test/users')
const users = await response.json()

scope.done()

If your tests need a real network request, configure Nock's network-connect rules explicitly. See Network Controls.

Verify the Upgrade ​

  • Run the test suite on Node.js 18 or later.
  • Add or update tests that use native fetch to confirm those requests are intercepted.
  • Check integrations that expect fetch to bypass Nock; Nock 14 now intercepts it.

For the next major upgrade, see Nock 14.x to 15.x.