Function workLoopSync

docs/external/js/react-dom.development.js:22262–22267

@noinline

()

  function workLoopSync() {
    // Already timed out, so perform work without checking if we need to yield.
    while (workInProgress !== null) {
      workInProgress = performUnitOfWork(workInProgress);
    }
  }
  /** @noinline */