Function completeAll

packages/react-server/src/ReactFizzServer.js:4945–4965

(request: Request)

// transitioning to the next request stage and this transition can happen in multiple places in this
// implementation.
function completeAll(request: Request) {
  // During a render the shell must be complete if the entire request is finished
  // however during a Prerender it is possible that the shell is incomplete because
  // it postponed. We cannot use rootPendingTasks in the prerender case because
  // those hit zero even when the shell postpones. Instead we look at the completedRootSegment
  const shellComplete =
    request.trackedPostpones === null
      ? // Render, we assume it is completed
        true
      : // Prerender Request, we use the state of the root segment
        request.completedRootSegment === null ||
        request.completedRootSegment.status !== POSTPONED;
  safelyEmitEarlyPreloads(request, shellComplete);

  // When the shell is complete it will be possible to flush. We attempt to prepre
  // the Preamble here in case it is ready for flushing
  preparePreamble(request);

  const onAllReady = request.onAllReady;
  onAllReady();
}

function queueCompletedSegment(
  boundary: SuspenseBoundary,