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Show HN: Duper – The Format That's Super

(duper.dev.br)
31 points epiceric | 2 comments | 01 Nov 25 23:41 UTC | HN request time: 0.416s | source

An MIT-licensed human-friendly extension of JSON with quality-of-life improvements (comments, trailing commas, unquoted keys), extra types (tuples, bytes, raw strings), and semantic identifiers (think type annotations).

Built in Rust, with bindings for Python and WebAssembly, as well as syntax highlighting in VSCode. I made it for those like me who hand-edit JSONs and want a breath of fresh air.

It's at a good enough point that I felt like sharing it, but there's still plenty I wanna work on! Namely, I want to add (real) Node support, make a proper LSP with auto-formatting, and get it out there before I start thinking about stabilization.

1. aappleby ◴[02 Nov 25 04:36 UTC] No.45787870[source]▶
Where the ** is the grammar specification? Prose is nice, but with a BNF I could plug this into my parsing expression grammar library right quick and give it a rundown.
replies(1): >>45788737 #
2. epiceric ◴[02 Nov 25 08:29 UTC] No.45788737[source]▶
Good point. I'll see about making one.