TypeError: React.createClass is not a function

#1

I just dropped the interop example into a create-react-app reason script boilerplate and im getting “TypeError: React.createClass is not a function” Any idea why that is? https://github.com/idkjs/notafunction/tree/master/src Thanks for any guidance.

#2

Lastest version of React (16.x) separated createClass to a package named https://www.npmjs.com/package/create-react-class

You can learn more here https://reactjs.org/docs/react-without-es6.html

#3

Eh we vendor our own createClass function and don’t use a third-party one. Is reason-scripts different?

#4

@chenglou not following exactly but the demo repo throws that error. Should it not?

How would we deal with that if its a different version of createClass?

#5

We don’t use React.createClass. You’re getting a regular JS error somewhere

#6

It looks like you’re using an older version of the demo repo?

If you update MyBanner.js to the new version it should work fine.

var ReactDOM = require('react-dom');
var React = require('react');

var App = function(props) {
  if (props.show) {
    return React.createElement('div', null,
      'Here\'s the message from the owner: ' + props.message
    );
  } else {
    return null;
  }
};
App.displayName = "MyBanner";

module.exports = App;
#7

@idkjs you’re simply accessing React.createClass which is unavailable in latest React.js distribution, use create-react-class instead.

#8

Works with that. Thank you. Updated example.