Function updateClassInstance

code/new-context-api/public/app.js:8033–8148

(current, workInProgress, renderExpirationTime)

  // Invokes the update life-cycles and returns false if it shouldn't rerender.
  function updateClassInstance(current, workInProgress, renderExpirationTime) {
    var ctor = workInProgress.type;
    var instance = workInProgress.stateNode;
    resetInputPointers(workInProgress, instance);

    var oldProps = workInProgress.memoizedProps;
    var newProps = workInProgress.pendingProps;
    var oldContext = instance.context;
    var newUnmaskedContext = getUnmaskedContext(workInProgress);
    var newContext = getMaskedContext(workInProgress, newUnmaskedContext);

    // Note: During these life-cycles, instance.props/instance.state are what
    // ever the previously attempted to render - not the "current". However,
    // during componentDidUpdate we pass the "current" props.

    // In order to support react-lifecycles-compat polyfilled components,
    // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
    if ((typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function') && typeof ctor.getDerivedStateFromProps !== 'function') {
      if (oldProps !== newProps || oldContext !== newContext) {
        callComponentWillReceiveProps(workInProgress, instance, newProps, newContext);
      }
    }

    // Compute the next state using the memoized state and the update queue.
    var oldState = workInProgress.memoizedState;
    // TODO: Previous state can be null.
    var newState = void 0;
    var derivedStateFromCatch = void 0;
    if (workInProgress.updateQueue !== null) {
      newState = processUpdateQueue(current, workInProgress, workInProgress.updateQueue, instance, newProps, renderExpirationTime);

      var updateQueue = workInProgress.updateQueue;
      if (updateQueue !== null && updateQueue.capturedValues !== null && enableGetDerivedStateFromCatch && typeof ctor.getDerivedStateFromCatch === 'function') {
        var capturedValues = updateQueue.capturedValues;
        // Don't remove these from the update queue yet. We need them in
        // finishClassComponent. Do the reset there.
        // TODO: This is awkward. Refactor class components.
        // updateQueue.capturedValues = null;
        derivedStateFromCatch = callGetDerivedStateFromCatch(ctor, capturedValues);
      }
    } else {
      newState = oldState;
    }

    var derivedStateFromProps = void 0;
    if (oldProps !== newProps) {
      // The prevState parameter should be the partially updated state.
      // Otherwise, spreading state in return values could override updates.
      derivedStateFromProps = callGetDerivedStateFromProps(workInProgress, instance, newProps, newState);
    }

    if (derivedStateFromProps !== null && derivedStateFromProps !== undefined) {
      // Render-phase updates (like this) should not be added to the update queue,
      // So that multiple render passes do not enqueue multiple updates.
      // Instead, just synchronously merge the returned state into the instance.
      newState = newState === null || newState === undefined ? derivedStateFromProps : _assign({}, newState, derivedStateFromProps);
    }
    if (derivedStateFromCatch !== null && derivedStateFromCatch !== undefined) {