One of the key factors in rapid development is discarding as little state as possible. In Node.js, this means the new --watch flags are not that useful, since they throw everything away. The ideal is to simply invalidate a module when it changes or when a module it depends on changes. This way, all imports and data are always fresh, but only partial module trees get re-evaluated. Previously, immaculata did the same thing Vite does now: use the built-in node:vm functionality to create an ad hoc m...