Devtools is only available in cjs and esm, which is fine for bundled apps, but doesn't work well for browser based vue code.
Foe example, pinia doesn't include devtools api since 3.0.1 (vuejs/pinia#2914), so browser based vue code using pinia 3.0.1+ debug build can't use debug at all.
An iife version of devtoolsApi would solve this problem.