Browsers and Node.js have gone through an evolution with regard to their module systems. In Node we're in the middle of a transition between CommonJS Modules (CJS), the original Node module system, and EcmaScript Modules (ESM), the TC39 specification for a JavaScript module system. As it stands, ESM is something of a black box and this can make testing a challenge. In this talk, David Mark Clements explains the testing strategy and supporting libraries he developed for testing ESM implementations, particular when it comes to mocking ESM dependencies.
Join the speaker for live Q&A on Slack: Thursday, June 3 from 11:20 - 11:40 PDT / 20:20 - 20:40 CEST, channel - #openjs_world-development
