A long long time ago TypeScript 4.1 brought major change - introduced Template Literal Types. After this release examples like type-based parser or type-based SQL engine spawned like crazy. In the next releases, we get even more Template Literal Types features!

Cool. But it doesn’t answer our question - “Who needs it anyway?”

I’ll talk about Template Literal Types, and we’ll check more real-life use cases for them than the mentioned type-based SQL engine :)