The second you’ve “engineered” yourself into losing good IDE support half the benefit or using a strongly typed language goes out the window in my opinion. Though maybe some bias because I make an IDE! :)

Happily with TS it’s possible to have DI and IInstantiationService’s and all that and still maintain good IDE support —- in no small part because the IDE is built with all those, in TS... if it was unusable we’d fix it.