LIBUCL VS json5

Have you seen ucl? https://github.com/vstakhov/libucl

It seems very similar.

Structured configuration is the type of configuration language I wanted for Djinn, whereby parameters could be grouped together into blocks, and nested within each other. Hence, the structure. The language I came up with was heavily influenced by HCL, and libucl and has support for duration and size literal values. Below is what the language looks like,

Here you go: https://github.com/vstakhov/libucl

JSON5 support

Meanwhile, formats have been evolving (JSON5, YAML), config entry points are constantly changing. These fluctuations, fortunately, were covered by tools like the cosmiconfig.

I think JSON5 is fairly close to this: https://json5.org

I reckon the only thing it's missing to be truly accessible to non-techies is that string values still need to be quoted, i.e. you can't have:

key: this is my value

(I'm definitely not saying it would be a good idea to allow quotes to be dropped, just that that's the only potential stumbling block I see for non-techies.)

I believe that's JSON5.

https://github.com/json5/json5

It's my preferred configuration file format, it fixes all the problems I have with JSON (trailing commas, comments) without turning it into a mess full of gotchas like YAML.

JSON 5 support

I would like to see mention of JSON5 which is 11 years its elder. For comments in JSON, JSON5 is a good starting point.