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

If you are working with ReactJS, you might have come across the error message “Uncaught TypeError: Super expression must either be null or a function, not undefined”. This error usually occurs when you are using the extends keyword to create a class component and there is an issue with the inheritance.

There can be a few reasons why you might be encountering this error. Let’s explore some possible solutions:

1. Check the import statement

One common reason for this error is an incorrect import statement. Make sure you are importing the necessary modules correctly. Check if you are importing the React module and the component you are extending properly.

Here is an example of a correct import statement:

import React, { Component } from 'react';

class MyComponent extends Component {
  // Component code here
}

2. Verify the component name

Another reason for this error could be a typo or an incorrect component name. Make sure the name of the component you are extending matches the name you are importing.

Here is an example of a correct component name:

class MyComponent extends React.Component {
  // Component code here
}

3. Check for circular dependencies

If you have circular dependencies in your project, it can cause this error. Circular dependencies occur when two or more modules depend on each other. To fix this, you can try restructuring your code to avoid circular dependencies.

4. Verify the version of ReactJS

If you are using an older version of ReactJS, it might not support the syntax you are using. Make sure you are using a compatible version of ReactJS. You can check the ReactJS documentation for the correct syntax and version compatibility.

Here is an example of a working ReactJS component:

import React, { Component } from 'react';

class MyComponent extends Component {
  render() {
    return (
      

        
Hello, World!
      
    );
  }
}

export default MyComponent;

By following these steps, you should be able to resolve the “Uncaught TypeError: Super expression must either be null or a function, not undefined” error in ReactJS. Remember to check your import statements, verify the component name, avoid circular dependencies, and use a compatible version of ReactJS.