The trick of course if to create an array of JSON objects which are comma separated key, value pairs.

I don't think a tool like jq is designed to "think for you, as to how to create the array of JSON objects from raw data".

That's up to you to design, specific to this single application first.

Personally, I think you are jumping to tools like jq too quickly before you fully understand / design your algorithm to take your raw output and create an array of JSON objects.

If it was me, I would write this in PHP and it would only take a few lines of PHP code to take your input and create the desired JSON file.

Either way, bash or PHP or Javascript, it a simply matter:

I have done this 100s of time (using PHP) and there is generally no short-cut to writing your algorithm to take raw text as data and parsing it into a JSON object and then creating an array of JSON objects.

However, generally speaking I create an array of arrays and then convert the final array to JSON; but it really depends on the format of the final JSON object and if it needs to be stringified to be transmitted over the net.

Also, I would caution you not to try to create "one parser to rule them all" as the output of other commands will like need a different parser.

Then when you have done this for a number of different commands, you can consider if you want to build "the mother of all UNIX commands to JSON parser".

Reference:

PHP: json_encode - Manual