[friendzis]

DSLs are awesome for what they are. DSLs let you ingest/load untrusted user code directly and have strong isolation barrier, allowing for very powerful user customizations with "native" implementations of certain features /functions.

Anything from programmable authorization to custom views becomes safely and relatively easily available. Say what you want about ESB pattern, but you can implement ESB transformers in a custom DSL.

Obviously not every piece of software needs these features, but when it does DSLs are very handy.

[hot_gril]

React and RN let users define views with JSX that are natively implemented. Not sure if that counts as a DSL, but it's JS extended to allow embedded HTML with custom tags, so it's not really a new thing to learn. Part of what made React popular was how vanilla it felt compared to other things that defined whole new languages or heavy-handed frameworks. And now that it exists, it doesn't need to be reinvented.

At work, we had two painful DSLs for monitoring queries. Our team changed monitoring systems entirely just to use SQL instead.