Tree.

json(tree)

Render the contents of the map-based tree in JSON format.

The ori tool uses YAML as its default output format, so you can use the json function to reformat the output as JSON:

$ ori greetings.yaml
Alice: Hello, Alice.
Bob: Hello, Bob.
Carol: Hello, Carol.
$ ori Tree.json greetings.yaml
{
  "Alice": "Hello, Alice.",
  "Bob": "Hello, Bob.",
  "Carol": "Hello, Carol."
}

See also the more general Origami.json, which can render objects to JSON that aren’t trees.