How to fix the “_reactRedux.connect) is not a function” error in React/Redux
Source: www.cajieh.com
Background
Recently a learner asked a question regarding how to fix the “_reactRedux.connect)
is not a function” error encountered in React/Redux. After guiding the learner on how to fix the issue, I decided to document the solution to aid others who might encounter the same error in the future.
Introduction
This tutorial demonstrates the likely cause of the “_reactRedux.connect)
is not a function” error in React/Redux, and how to fix the issue.
Pre-requisite:
- Basic knowledge of Javascript and React is required
- A computer system with Node.js runtime engine installed
- Proficient in the use of any modern code editors i.e. VS Code
Likely cause “_reactRedux.connect)
is not a function” error
Typically this error occurs when you're trying to use the connect
function from "react-redux" library, but it's not being imported correctly or it's not available. However, in the learner situation mentioned above, the actual cause was the use of version "^9.1.2" "react-redux" library in package.json which no longer supports the connect
function.
How to fix:
Option 1
A quick fix is to change the "react-redux" from "^9.1.2" to "^7.2.6" in "package.json", then delete node_modules and re-run npm install && npm start
. That should fix the issue.
Option 2:
A better approach would be to retain the "react-redux" dependency at "^9.1.2" and replace the "connect" function with the "useSelector" and "useDispatch" hooks. For example:
import { useSelector, useDispatch } from 'react-redux';
// Inside your component const data = useSelector(state => state.data);
const dispatch = useDispatch();
// Use dispatch to trigger actions dispatch(yourAction());
Replace state.data
and actionMethod
with the actual state and dispatch action.
That’s how simple it's to fix the "_reactRedux.connect)
is not a function” error in React/Redux.
I hope this helps! Go to the contact page and let me know if you have any further questions.
Happy coding!