Hjson

Hjson is an open source data notation created in 2014 by Christian Zangl.

Source code:

git clone https://github.com/hjson/hjson

#470on PLDB

10Years Old

Hjson is a syntax extension to JSON. It's NOT a proposal to replace JSON or to incorporate it into the JSON spec itself. It's intended to be used like a user interface for humans, to read and edit before passing the JSON data to the machine.

Hjson website
Hjson is developed on GitHub and has 2,414 stars
Hjson first developed in https://github.com/hjson
hjson.org was registered in 2015

Example from the web:

{
 # hash style comments
 # (because it's just one character)

 // line style comments
 // (because it's like C/JavaScript/...)

 /* block style comments because
    it allows you to comment out a block */

 # Everything you do in comments,
 # stays in comments ;-}
}

Feature	Supported	Token	Example
MultiLine Comments	✓	/* */	/* A comment */
Comments	✓		# A comment
Line Comments	✓	#	# A comment
Semantic Indentation	X

Hjson - Data notation

Language features