Function processChildContext

dash/deps/react-dom@18.2.0.js:11888–11923

(fiber, type, parentContext)

  }

  function processChildContext(fiber, type, parentContext) {
    {
      var instance = fiber.stateNode;
      var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future.
      // It has only been added in Fiber to match the (unintentional) behavior in Stack.

      if (typeof instance.getChildContext !== 'function') {
        {
          var componentName = getComponentNameFromFiber(fiber) || 'Unknown';

          if (!warnedAboutMissingGetChildContext[componentName]) {
            warnedAboutMissingGetChildContext[componentName] = true;

            error('%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName);
          }
        }

        return parentContext;
      }

      var childContext = instance.getChildContext();

      for (var contextKey in childContext) {
        if (!(contextKey in childContextTypes)) {
          throw new Error((getComponentNameFromFiber(fiber) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes.");
        }
      }

      {
        var name = getComponentNameFromFiber(fiber) || 'Unknown';
        checkPropTypes(childContextTypes, childContext, 'child context', name);
      }

      return assign({}, parentContext, childContext);
    }
  }

  function pushContextProvider(workInProgress) {
    {