This gotta be the weirdest kata I've ever done. It's like creating your own data format by combining string, array, object, and JSON format together.|

As a result you'll have a string you may just copy-paste whenever you feel like defining a list of objects - now without the need to put in names, IDs, curly brackets, colon signs, screw up everything, fail searching for a typo and begin anew. This might come in handy with large lists.

No offense, but I don't see how creating your own format can be handy when there is already a standard format like JSON, in which you can convert and export it to various formats using dozens of tools available online.

Ruby 3.0 should be enabled.

So just confirming... we're creating a string that's kinda like JSON but slightly different? I think most people will probably glance over the description and assume a) we need to make an array of objects, or b) return a JSON string. This is because objects are useful, JSON is useful... having JSON with weird formatting isn't so useful ;P

Technically this is fine, but you may want to warn coders that this is neither a JavaScript object nor JSON.