ran npm run build on diff and no sharp warning, uninstalled sharp and got warning

apart from the lack of warning, I don't see any difference in the build size.

.next/static/media after each build, the svg and png files are the same size

.... so... not entirely clear if this provides any benefit at this time (mb it only helps with jpgs?)

However, next docs do recommend it as better for prod, and it does make sense that they would select other tradeoffs for npm run dev vs deployments (spend less time optimizing assets as you are kind of redeploying every second or so in the dev environment, more important to see behavior / feature changes in real time than loaded images).