JavaScript powers Observable, but you may encounter subtle surprises due to the reactive runtime. Keep your JS notebook-friendly with these techniques.

Mike Bostock

Observable

Introduction to generators

Invalidation

Introduction to promises

Tom MacWright

Introduction to require

Jeremy Ashkenas

Introduction to mutable state

Learn how Observable works, from first edit to publish.

Documentation

JavaScript in Observable

Andrew Wooldridge

Yes, fixed. Also added a note that this is an antipattern since new versions can introduce breaking changes exactly like this.

Now I kind of want to publish a npm module named "not-a-real-npm-module". 😁