Error message: "The function TypeError: Next Js Router.push is not defined"

Encountering an issue when attempting to redirect using the Router.push() method.

Error: TypeError: next_router__WEBPACK_IMPORTED_MODULE_3__.Router.push is not a function

In the process of transitioning from create-react-app to Next.js.

const navigateUser = () => {
        if (true) {
            Router.push('/');
        }
    };

Answer №1

To include, I had to perform the following steps:

// It functions well by importing Router from "next/router"
import Router from "next/router";
// However, importing { Router } from "next/router" does not work
import { Router } from "next/router";

Answer №2

Ensure you do not include curly brackets when importing the Router from next/router

Instead, use this format:

import Router from "next/router";

Answer №3

You can access the Router module exclusively on the client-side

Answer №4

It is important to remember when using next.js that redirects should be implemented within the getInitialProps method to prevent unnecessary rendering of components.

For instance:

const MyComponent = ()=>{
  return <tag> {/* ... */} </tag>
}
MyComponent.getInitialProps = ({res}) => {
  if (res) { 
    /* server-side */
    res.writeHead(302, {
    Location: 'http://example.com'
  })
  res.end()
  } else {      
   /* client-side */
    Router.push('http://example.com')
  }
  return {}
}

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