Places a nested React root's tunnel content at this point in tree order.
Unanchored roots have no defined order.
One nested root per anchor; it must bridge context. Function children
receive a bridge: render the root's children in ContextBridge so
bridged Ins share the providers above the anchor. r3f's <Canvas>
copies context itself; bridge it as well when it holds Ins.
A root whose Ins all sit inside bridged content needs no anchor: that
content orders at its In.
Hiding it (Suspense, Activity) keeps the root's content in the Out.
Places a nested React root's tunnel content at this point in tree order. Unanchored roots have no defined order. One nested root per anchor; it must bridge context. Function children receive a bridge: render the root's children in ContextBridge so bridged Ins share the providers above the anchor. r3f's
<Canvas>copies context itself; bridge it as well when it holds Ins.A root whose Ins all sit inside bridged content needs no anchor: that content orders at its In.
Hiding it (Suspense, Activity) keeps the root's content in the Out.