The MockTracker API in Node.js provides a means of tracking and managing mock objects in a test
environment.
import { mock } from 'node:test';
const fn = mock.fn();
fn(1,2,3); // does nothing... but
console.log(fn.mock.callCount()); // Records how many times it was called
console.log(fn.mock.calls[0].arguments); // Records the arguments that were passed each callThe full MockTracker API is documented in the Node.js documentation for MockTracker ↗︎.
The Workers implementation of MockTracker currently does not include an implementation of the Node.js mock timers API ↗︎.