new blog post https://www.phpied.com/do-it-yourself-code-coverage-and-testing/ part 3 (of 3, so far) about going package.json-free
Do It Yourself: code coverage and testing

This is what turns out to be a part 3 of a series about building sightread.org with minimal tooling: Part 1: Import JavaScript like it's 2026 Part 2: Maximally Minimal Build Process The previous posts covered how I structure js modules for parallel loading and how to build a production-ready a

phpied.com

@stoyan You may have already seen it but recent versions of Node have built-in testing and assertion utilities and a `node --test` flag that runs all test files.

https://nodejs.org/en/learn/test-runner/using-test-runner

Node.js — Using Node.js's test runner

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.