Function validateFunctionComponentInDev

packages/react-server/src/ReactFizzServer.js:2630–2667

(Component: any)

}

function validateFunctionComponentInDev(Component: any): void {
  if (__DEV__) {
    if (Component && Component.childContextTypes) {
      console.error(
        'childContextTypes cannot be defined on a function component.\n' +
          '  %s.childContextTypes = ...',
        Component.displayName || Component.name || 'Component',
      );
    }

    if (typeof Component.getDerivedStateFromProps === 'function') {
      const componentName = getComponentNameFromType(Component) || 'Unknown';

      if (!didWarnAboutGetDerivedStateOnFunctionComponent[componentName]) {
        console.error(
          '%s: Function components do not support getDerivedStateFromProps.',
          componentName,
        );
        didWarnAboutGetDerivedStateOnFunctionComponent[componentName] = true;
      }
    }

    if (
      typeof Component.contextType === 'object' &&
      Component.contextType !== null
    ) {
      const componentName = getComponentNameFromType(Component) || 'Unknown';

      if (!didWarnAboutContextTypeOnFunctionComponent[componentName]) {
        console.error(
          '%s: Function components do not support contextType.',
          componentName,
        );
        didWarnAboutContextTypeOnFunctionComponent[componentName] = true;
      }
    }
  }
}

function renderForwardRef(
  request: Request,