reactjs - Typescript React React.createElement: type should not be null, undefined, boolean, or number -


i using typescript(1.8.10) , learning react. using react-bootstrap build simple navigation example , getting following error. error prevents dom getting rendered. totally new react not sure doing wrong here. thank or pointers past error.

    // '.tsx' file enables jsx support in typescript compiler,  // more information see following page on typescript wiki: // https://github.com/microsoft/typescript/wiki/jsx /// <reference path="./../../../typings/index.d.ts" />  import * react 'react'; import * reactbootstrap 'react-bootstrap'; interface inavigationprops { }  let navbar = reactbootstrap.navbar; let navitem = reactbootstrap.navitem; let menuitem = reactbootstrap.menuitem; let navbarheader = reactbootstrap.navbarheader; const dropdownitems = [     { href: '#', name: 'overview' },     { href: '#', name: 'setup' },     { href: '#', name: 'usage' }, ];   export default class navigation extends react.component<inavigationprops, {}> {     render() {          return (             <navbar>                 <navbarheader href="homepage.html" name="website name"/>                 <navitem>                     <menuitem link="about.html" title="about" />                     <menuitem link="contact.html" title="contact" />                     <menuitem link="services.html" title="services" />                 </navitem>             </navbar>         );     } }      // '.tsx' file enables jsx support in typescript compiler,  // more information see following page on typescript wiki: // https://github.com/microsoft/typescript/wiki/jsx /// <reference path="./../../typings/index.d.ts" />  import * react "react"; import * reactdom "react-dom"; import * reactbootstrap 'react-bootstrap';  import headernavigation "./navigationcomponent/navigation"; import hello "./hellocomponent/hello";  reactdom.render(     <div>         <headernavigation />         <hello name="athraya" />    </div>,     document.getelementbyid("root") );

error

is react version compatible react-bootstrap version, or bootstrap nav facilities? according this, maybe versions cause error.

or did check react-router, because using link property.did check this?


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