[btown]

Did anyone think to make languages that compile to those? I imagine that it would make an incredible amount of sense for Epic, at its scale, to write the equivalent of Typescript to reduce errors and improve productivity. Or do they just not have any sort of dev tools/research department?

[roywiggins]

They built their MUMPS IDE themselves, and their change tracking / bug management system. And effectively the database code is also entirely written by Epic- the business logic and database are both written in MUMPS and live side-by-side.

So they have quite a lot on their plate when it comes to tooling. When I was there, there was a truly horrible attempt at a DSL for code-generation that would build database querying code, but I found it both unwritable and unreadable.