[verdverm]

runs a command in a bash for-loop without context, makes some performance claim...

how much are each of these commands actually doing? last I heard, bun is not yet doing all the complex esbuild operations (i.e. tree-shaking) that npx is

[panzerboiler]

You must be thinking of something else. `npx` is https://www.npmjs.com/package/npx.