Function pushPrimaryTreeSuspenseHandler

docs/index.js:6964–6972

(handler)

var suspenseHandlerStackCursor = createCursor(null),
  shellBoundary = null;
function pushPrimaryTreeSuspenseHandler(handler) {
  var current = handler.alternate;
  push(suspenseStackCursor, suspenseStackCursor.current & 1);
  push(suspenseHandlerStackCursor, handler);
  null === shellBoundary &&
    (null === current || null !== currentTreeHiddenStackCursor.current
      ? (shellBoundary = handler)
      : null !== current.memoizedState && (shellBoundary = handler));
}
function pushOffscreenSuspenseHandler(fiber) {
  if (22 === fiber.tag) {
    if (