AI saved a company $500k. The test suite did the actual work.

Many people are sharing the story of Reco that saved $500k a year using AI to rewrite a JavaScript JSONata implementation to Go. But most of those people are sharing the wrong lesson. The headline makes it sound like magic. Take some AI, point it at some old code, get new code, save half a mil. But if you actually read what went down, the magic part wasn't the AI. The Part Nobody Wants to Talk About Reco didn't just throw their codebase at an LLM and hope for the best. They adopted the jsonata-j