This is a great endeavour. Recently I have been thinking about how to add syntax and metaprogramming extensions to programming languages without forking the compiler/interpreter. Source maps are needed there in order to have good editor support through e.g. an LSP server proxy. In researching it I was a bit let down I couldn't find too much research and specifications for the topic.

Source maps are one of those invisible pieces of infrastructure that developers rely on every day but rarely think about.

Standardizing them properly could remove a surprising amount of tooling friction across ecosystems.

Very cool to see so much work going on to make the web platform even more awesome - and in the open!

Stuff like this makes me believe open wins over closed in the end :)