Templating DSLs are extremely common—JSX, ERB, HEEX, etc. So are router DSLs as you'll see in Rails, Phoenix and other frameworks. In Elixir, the Ecto query DS

Templating DSLs are extremely common—JSX, ERB, HEEX, etc. So are router DSLs as you'll see in Rails, Phoenix and other frameworks. In Elixir, the Ecto query DSL is a pretty big deal as well.