Function createHostRootFiber

code/new-context-api/public/app.js:6311–6314

(isAsync)

}

function createHostRootFiber(isAsync) {
  var mode = isAsync ? AsyncMode | StrictMode : NoContext;
  return createFiber(HostRoot, null, null, mode);
}

function createFiberFromElement(element, mode, expirationTime) {
  var owner = null;