Koa JSON Response Pretty-Printer

koa-json is a Koa middleware designed to pretty-print JSON responses and convert Node.js object streams into binary output. While the package itself, currently at version `2.0.2`, was last updated in April 2016, it remains functional and compatible with recent Koa versions (2.x and 3.x) which utilize async/await middleware. It serves a specific utility by automatically formatting `ctx.body` objects into human-readable, indented JSON, offering options to control pretty-printing behavior via a query string parameter or global configuration. This differentiates it from `koa-bodyparser`, which handles parsing incoming JSON requests. Due to its long-standing stability and the specialized nature of its function, the project's release cadence is effectively dormant, but it continues to be a viable option for adding structured JSON output to Koa applications.