Function commitRootImpl

dash/deps/react-dom@16.14.0.js:22520–22814

(root, renderPriorityLevel)

  }

  function commitRootImpl(root, renderPriorityLevel) {
    do {
      // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which
      // means `flushPassiveEffects` will sometimes result in additional
      // passive effects. So we need to keep flushing in a loop until there are
      // no more pending effects.
      // TODO: Might be better if `flushPassiveEffects` did not automatically
      // flush synchronous work at the end, to avoid factoring hazards like this.
      flushPassiveEffects();
    } while (rootWithPendingPassiveEffects !== null);

    flushRenderPhaseStrictModeWarningsInDEV();

    if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
      {
        throw Error( "Should not already be working." );
      }
    }

    var finishedWork = root.finishedWork;
    var expirationTime = root.finishedExpirationTime;

    if (finishedWork === null) {
      return null;
    }

    root.finishedWork = null;
    root.finishedExpirationTime = NoWork;

    if (!(finishedWork !== root.current)) {
      {
        throw Error( "Cannot commit the same tree as before. This error is likely caused by a bug in React. Please file an issue." );
      }
    } // commitRoot never returns a continuation; it always finishes synchronously.
    // So we can clear these now to allow a new callback to be scheduled.


    root.callbackNode = null;
    root.callbackExpirationTime = NoWork;
    root.callbackPriority = NoPriority;
    root.nextKnownPendingLevel = NoWork;
    startCommitTimer(); // Update the first and last pending times on this root. The new first
    // pending time is whatever is left on the root fiber.

    var remainingExpirationTimeBeforeCommit = getRemainingExpirationTime(finishedWork);
    markRootFinishedAtTime(root, expirationTime, remainingExpirationTimeBeforeCommit);

    if (root === workInProgressRoot) {
      // We can reset these now that they are finished.
      workInProgressRoot = null;
      workInProgress = null;
      renderExpirationTime$1 = NoWork;
    } // This indicates that the last root we worked on is not the same one that
    // we're committing now. This most commonly happens when a suspended root
    // times out.
    // Get the list of effects.