ReactJs: What should the PropTypes be for this.props.children?

Question

Given a simple component that renders its children:

class ContainerComponent extends Component {
  static propTypes = {
    children: PropTypes.object.isRequ         


        

Answer 1

Try a custom propTypes :

 const  childrenPropTypeLogic = (props, propName, componentName) => {
          const prop = props[propName];
          return React.Children
                   .toArray(prop)
                   .find(child => child.type !== 'div') && new Error(`${componentName} only accepts "div" elements`);
 };


static propTypes = {

   children : childrenPropTypeLogic

}

Fiddle

const {Component, PropTypes} = React;

 const  childrenPropTypeLogic = (props, propName, componentName) => {
             var error;
          var prop = props[propName];
    
          React.Children.forEach(prop, function (child) {
            if (child.type !== 'div') {
              error = new Error(
                '`' + componentName + '` only accepts children of type `div`.'
              );
            }
          });
    
          return error;
    };
    
  

class ContainerComponent extends Component {
  static propTypes = {
    children: childrenPropTypeLogic,
  }

  render() {
    return (
      

        {this.props.children}
      
    );
  }
}



class App extends Component {
   render(){
    return (
    
        
1
        
2
      
    )
   }
}

ReactDOM.render( , document.querySelector('section'))