I started writing my own language in JavaScript last Summer but gave up after only writing the Lexer because I didn't know how to continue. I would LOVE to read this blog post!
Agreed, it's an excellent resource. One of the best PL tutorials I've ever read.
But if you use the OCaml version with a recent version of OCaml, you'll run into a few issues. I sent in a patch with a few simple updates to the path mailing list earlier this year, but last I checked it wasn't merged.
Patch is here (it's a text file, despite the "bin" extension):
I wrote a tutorial some time back — http://lisperator.net/pltut/ — also targeted at JS. It walks you through parsing, evaluating, continuations and CPS compiling.
Parsing, evaluating, continuations and CPS... it seems similar to this language: https://curiosity-driven.org/continuations#interpreter but the syntax is clearly different. Also, that interpreter is implemented in ~320 lines of JS.