Haha, my Github has some projects of questionable usefulness, yeah. In that case, I was building a UI for an internal monitoring app at an internship. It had to

Haha, my Github has some projects of questionable usefulness, yeah. In that case, I was building a UI for an internal monitoring app at an internship. It had to make requests to lots of internal API and couldn't really ask for custom endpoints or changes. Having a declarative way to transform the responses into UI models was really useful. That also explains the '!json' operator, because inevitably in legacy systems there will be responses that contain stringified JSON that needs to be parsed.