TypeScript 1.6 warning: Component XXX cannot be instantiated or called as a JSX element

var CommentList = React.createClass({
          render: function () {
        return (
            <div className="commentList">
                Hello there! I am the CommentList component.
                </div>
        );
          }
});

var CommentBox = React.createClass({
          render: function () {
        return (
            <div className="commentBox">
                <h1>User Comments</h1>
                <CommentList /> //ERROR
                </div>
        );
    }
});

React.render(
          React.createElement(CommentBox, null),
          document.getElementById('content')
);

This code snippet is causing an error message to be displayed: The JSX element type 'CommentList' does not have any construct or call signatures.

The same code runs successfully with plain HTML and JavaScript (based on this tutorial: https://facebook.github.io/react/docs/tutorial.html)

I am puzzled as to why TypeScript is not accepting it. I am using Visual Studio 2013 with TS 1.6 ()

Answer №1

Everything is running smoothly without any errors (as seen in the screenshot from atom-typescript) :

https://i.stack.imgur.com/R80HB.png

Here are some helpful suggestions:

  • Double-check that visual studio is indeed using typescript 1.6
  • Ensure that you have included `react.d.ts` and avoid using the global version
  • Verify that the `React` variable is accessible (e.g. by using `import React = require('react');`)

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