gron is a tool for working with JSON. It chunks things into key-value pairs where the key is a dot-separated hierarchy. This allows you then to use grep or ack to search for strings of interest.

It can also reassemble these back into JSON. This can be useful for adding or removing portions of a JSON structure. It becomes really interesting then when you pair it with jq in order to retrieve data back out.

As an example, I can get the list of development requirements from a composer.json with the following:

gron composer.json | ack "require-dev" | gron -u | jq '."require-dev" | keys[]'

(They'll still be in quotes, but that's easier to deal with than JSON keys!)

Davey does a stellar job here of detailing a number of different tools he uses to cobble together an optimal terminal experience for himself. I personally found starship, eza, and fd to be great finds, and have incorporated them in my own terminal setup.