FAWK: LLMs can write a language interpreter

I've been working on my own web app DSL, with most of the typing done by Claude Code, eg,

  GET /hello/:world
    |> jq: `{ world: .params.world }`
    |> handlebars: `<p>hello, {{world}}</p>`
  
  describe "hello, world"
    it "calls the route"
      when calling GET /hello/world
      then status is 200
      and output equals `<p>hello, world</p>`

Here's a WIP article about the DSL:

https://williamcotton.com/articles/introducing-web-pipe

And the DSL itself (written in Rust):

https://github.com/williamcotton/webpipe

And an LSP for the language:

https://github.com/williamcotton/webpipe-lsp

And of course my blog is built on top of Web Pipe:

https://github.com/williamcotton/williamcotton.com/blob/mast...

It is absolutely amazing that a solo developer (with a demanding job, kids, etc) with just some spare hours here and there can write all of this with the help of these tools.