Built-in Components
Sprig does not ship a Vue-style set of built-in component tags. Its core offers DOM helpers such as h, fragment, when, each, slot, component, mount, and visibleIsland. The router provides the <outlet :view="…" /> placeholder used by layouts.
Transition, TransitionGroup, KeepAlive, Teleport, and Suspense are not built-in Sprig components. The optional animation add-on supplies explicit and opt-in lifecycle transition helpers; it does not add those Vue components. See Animations.