TypeError: _react2.default.createClass is not a function

[formio]

TypeError: _react2.default.createClass is not a function

[chamindasion]

This is due to react version 16 not supporting for createclass. I could overcome by downgrading react and reactdom to version 15. Basically update you package.json file for react and reactdom to version 15. And run npm install again

[harrowm]

The code needs to be changed for React v16 .. the create class has moved to a separate require.

EDIT: spotting the error is much easier than correcting it ! I did a clone and took a look at the code. The files that need changing on my installation are in

node_modules/react-formio/lib/components/FormComponents/

e.g. button.js: the line

module.exports = _react2.default.createClass({

needs to change to

var createReactClass = require('create-react-class')
module.exports = createReactClass({

or similar. The trouble is when I clone the code, the lib directory doesn't contain these files. Can anyone explain ?

Malcolm

@harrowm That's because the lib folder that you get when you npm install --save formio-react is already a built version (transpiled to ES5 by Babel). So the babel plugin or preset needs to be updated and not necessarily the source code you have on this repo.

[prycec]

What is the status of this issue?

[bionicvapourboy]

Downgrade is not an option because in my app I make use of fragments, portals and so on.

[randallknutson]

Use react-formio v2.0 or higher which supports react 16. The react-formio v1.x uses createClass extensively which won't work in react 16.