Function precacheNode

docs/lib/react.js:7302–7306

* Populate `_nativeNode` on the rendered native/text component with the given * DOM node. The passed `inst` can be a composite.

(inst, node)

 * DOM node. The passed `inst` can be a composite.
 */
function precacheNode(inst, node) {
  var nativeInst = getRenderedNativeOrTextFromComponent(inst);
  nativeInst._nativeNode = node;
  node[internalInstanceKey] = nativeInst;
}

function uncacheNode(inst) {
  var node = inst._nativeNode;