react_toastify__WEBPACK_IMPORTED_MODULE_3__.toast.configure is not a function

2 min read 05-10-2024

"react-toastify__WEBPACK_IMPORTED_MODULE_3__.toast.configure is not a function": Unraveling the Mystery

Have you encountered the frustrating error "react-toastify__WEBPACK_IMPORTED_MODULE_3__.toast.configure is not a function" while working with React Toastify? This error usually indicates that you're trying to use the configure() method incorrectly or that there's an issue with how React Toastify is imported or initialized.

Let's dive into the common causes of this error and how to resolve them.

Scenario and Original Code

Imagine you're building a React application where you want to display toast notifications using React Toastify. You have the library installed and have imported it into your component:

import React from 'react';
import { toast } from 'react-toastify';
import 'react-toastify/dist/ReactToastify.css';

const MyComponent = () => {
  const handleClick = () => {
    toast.configure({
      position: toast.POSITION.TOP_RIGHT
    }); // Error: react-toastify__WEBPACK_IMPORTED_MODULE_3__.toast.configure is not a function
    toast('Hello, World!'); 
  };

  return (
    <button onClick={handleClick}>Show Toast</button>
  );
};

In this example, you're attempting to configure the toast settings using toast.configure() before displaying a toast message.

Understanding the Problem

The error arises because configure() is not a method on the toast object in React Toastify. Instead, toast.configure() is a function for globally configuring the toast settings outside of your component's logic.

Here's the breakdown:

React Toastify's Global Configuration: React Toastify requires a single, global configuration of its settings. This configuration happens outside your component's render function and typically at the top level of your application.
The ToastContainer Component: React Toastify leverages a <ToastContainer> component to render your toasts. It's crucial to wrap your application's root element with <ToastContainer> to allow React Toastify to manage the toast rendering.

Resolving the Error

Let's fix the code by properly configuring React Toastify:

import React from 'react';
import { ToastContainer, toast } from 'react-toastify';
import 'react-toastify/dist/ReactToastify.css';

const MyComponent = () => {
  const handleClick = () => {
    toast('Hello, World!'); 
  };

  return (
    <>
      <ToastContainer /> {/* Wrap your app with the ToastContainer */}
      <button onClick={handleClick}>Show Toast</button>
    </>
  );
};

// Global configuration outside of the component
toast.configure({
  position: toast.POSITION.TOP_RIGHT
});

Explanation:

Import ToastContainer: We import both ToastContainer and toast from react-toastify.
Wrap with <ToastContainer>: The <ToastContainer> component is used to render the toasts.
Global Configuration: The toast.configure() call now happens outside the component's code. This ensures that React Toastify's settings are configured globally for your entire application.

Additional Tips and Best Practices

Import the CSS: Ensure that you import 'react-toastify/dist/ReactToastify.css' in your main application file to load the styles for the toast notifications.
Customize Toasts: React Toastify offers numerous customization options. Refer to their official documentation for a comprehensive guide.
Error Handling: Handle errors gracefully by using error handling mechanisms (e.g., try-catch blocks) when working with React Toastify.
Test Thoroughly: Verify that your toast notifications are displayed correctly in various scenarios and user interactions.

Conclusion

By understanding the proper way to configure React Toastify and leveraging the ToastContainer component, you can avoid the "react-toastify__WEBPACK_IMPORTED_MODULE_3__.toast.configure is not a function" error and seamlessly integrate toast notifications into your React applications. Remember, global configuration is key to making React Toastify work correctly!

react_toastify__WEBPACK_IMPORTED_MODULE_3__.toast.configure is not a function