Uncaught TypeError: Super expression must either be null or a function, not undefined in React app

Posted on Updated on

Running a react app, nothing is showing up.

This is the error I am getting in console:

Uncaught TypeError: Super expression must either be null or a function, not undefined

From bundle.js:22486

In console, I  expand and click on the link to  bundle.js:22486

I get back this line, but the important part is at the end:

    function _inherits(subClass, superClass) { if (typeof superClass !== “function” && superClass !== null) { throw new TypeError(“Super expression must either be null or a function, not ” + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } // import React, {Componenet} from ‘react’

Can you see what was wrong?

I spelled Component wrong. But the error doesn’t directly say that, you need to dig a little.

One I fixed the error, I was able to see my app

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s