You have identified a problem with TypeScript, not with Node. TS has always been excruciatingly slow. Many are now switching over to JSDocs for type management. It has many benefits over the TS Language while still being completely compatible with the TS Engine and tsc. However there is no build or runtime cost. You can do enforcement of keeping your JSDoc comments up-to-date via a simple linting plugin. If you don't want to configure all the linting rules yourself, this is the easiest 2 step process to get started github.com/tjw-lint/eslint-config-...
You have identified a problem with TypeScript, not with Node. TS has always been excruciatingly slow. Many are now switching over to JSDocs for type management. It has many benefits over the TS Language while still being completely compatible with the TS Engine and
tsc. However there is no build or runtime cost. You can do enforcement of keeping your JSDoc comments up-to-date via a simple linting plugin. If you don't want to configure all the linting rules yourself, this is the easiest 2 step process to get started github.com/tjw-lint/eslint-config-...Bun still seems like a more elegant solution to my TypeScript problem though.
I'm personally not a big fan of JSDocs as a replacement for TypeScript in its current state.