It's up to each team to decide how they want to write their code. TypeScript is the same with JS having a "vestigial" `class` (you can argue that "it's not the

It's up to each team to decide how they want to write their code. TypeScript is the same with JS having a "vestigial" `class` (you can argue that "it's not the same", but nevertheless, it is possible to write OOP style code in JS/TS and in fact, is the norm in many packages like Nest.js). The language is a tool; teams decide how to use the tool.