Function scheduleUpdateOnFiber

dash/deps/react-dom@18.3.1.js:25523–25593

(root, fiber, lane, eventTime)

  }

  function scheduleUpdateOnFiber(root, fiber, lane, eventTime) {
    checkForNestedUpdates();

    {
      if (isRunningInsertionEffect) {
        error('useInsertionEffect must not schedule updates.');
      }
    }

    {
      if (isFlushingPassiveEffects) {
        didScheduleUpdateDuringPassiveEffects = true;
      }
    } // Mark that the root has a pending update.


    markRootUpdated(root, lane, eventTime);

    if ((executionContext & RenderContext) !== NoLanes && root === workInProgressRoot) {
      // This update was dispatched during the render phase. This is a mistake
      // if the update originates from user space (with the exception of local
      // hook updates, which are handled differently and don't reach this
      // function), but there are some internal React features that use this as
      // an implementation detail, like selective hydration.
      warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase
    } else {
      // This is a normal update, scheduled from outside the render phase. For
      // example, during an input event.
      {
        if (isDevToolsPresent) {
          addFiberToLanesMap(root, fiber, lane);
        }
      }

      warnIfUpdatesNotWrappedWithActDEV(fiber);

      if (root === workInProgressRoot) {
        // Received an update to a tree that's in the middle of rendering. Mark
        // that there was an interleaved update work on this root. Unless the
        // `deferRenderPhaseUpdateToNextBatch` flag is off and this is a render
        // phase update. In that case, we don't treat render phase updates as if
        // they were interleaved, for backwards compat reasons.
        if ( (executionContext & RenderContext) === NoContext) {
          workInProgressRootInterleavedUpdatedLanes = mergeLanes(workInProgressRootInterleavedUpdatedLanes, lane);
        }

        if (workInProgressRootExitStatus === RootSuspendedWithDelay) {
          // The root already suspended with a delay, which means this render
          // definitely won't finish. Since we have a new update, let's mark it as
          // suspended now, right before marking the incoming update. This has the
          // effect of interrupting the current render and switching to the update.
          // TODO: Make sure this doesn't override pings that happen while we've
          // already started rendering.
          markRootSuspended$1(root, workInProgressRootRenderLanes);
        }
      }

      ensureRootIsScheduled(root, eventTime);