> All async I/O functions have a corresponding sync version. They do, but they're widely frowned upon in most applications. They're completely frowned upon in

> All async I/O functions have a corresponding sync version. They do, but they're widely frowned upon in most applications. They're completely frowned upon in server-related applications. I've only really seen them used in cheap build scripts, and now with async/await (via Babel's regenerator transformation), I don't even see that much anymore.