Tracks whether the viewport is at least Tailwind's sm breakpoint (640px). Defaults to false during SSR and the first client paint so server markup matches hydration; syncs to matchMedia after mount.
sm
false
matchMedia
true when min-width: 640px matches.
true
min-width: 640px
Tracks whether the viewport is at least Tailwind's
smbreakpoint (640px). Defaults tofalseduring SSR and the first client paint so server markup matches hydration; syncs tomatchMediaafter mount.