Solving the Mysterious “Nextjs tRPC Error: (0 , react__WEBPACK_IMPORTED_MODULE_3__.createContext) is not a function” Error

Are you tired of staring at the frustrating “Nextjs tRPC Error: (0 , react__WEBPACK_IMPORTED_MODULE_3__.createContext) is not a function” error message? Do you feel like you’ve tried every possible solution, but none of them seem to work? Fear not, dear developer, for you’re not alone! In this article, we’ll delve into the depths of this error, explore its causes, and provide a step-by-step guide to resolve it once and for all.

What is tRPC and How Does it Relate to Nextjs?

tRPC is a popular framework for building APIs with TypeScript, and Nextjs is a popular React-based framework for building server-rendered, statically generated, and performance-optimized web applications. When you combine these two powerful technologies, you get a robust and scalable API-driven application. However, with great power comes great responsibility, and sometimes, errors can arise.

The (0 , react__WEBPACK_IMPORTED_MODULE_3__.createContext) is not a function Error

This error typically occurs when there’s a mismatch between the versions of React and tRPC. Yes, you read that right – version conflicts can be a real pain! When tRPC tries to use the createContext function from React, but can’t find it, the error is thrown. But don’t worry, we’ll explore the possible causes and solutions in detail.

Possible Causes of the Error

Before we dive into the solutions, let’s identify the potential causes of the error:

• Incompatible versions of React and tRPC: As mentioned earlier, version conflicts can be a major culprit.
• Incorrect imports or exports: Make sure you’re importing and exporting the correct modules and functions.
• Mismatched dependencies: Check your package.json file for any mismatched or outdated dependencies.
• Conflicting plugins or middleware: Certain plugins or middleware can interfere with the normal functioning of tRPC and Nextjs.

Solution 1: Verify and Update Your Dependencies

To ensure you’re using compatible versions of React and tRPC, follow these steps:

1. Check your package.json file for the versions of React and tRPC:

{
  "dependencies": {
    "react": "^17.0.2",
    "trpc": "^9.12.0",
    ...
  }
}

2. Run the following command to update your dependencies:

npm install react@latest trpc@latest

3. Verify that the versions are updated by running:

npm ls react trpc

Solution 2: Review Your Imports and Exports

Double-check your imports and exports to ensure they’re correct:

// server/api/trpc/[trpc].ts
import { createContext } from 'react';

export function createTRPCContext() {
  return createContext({});
}

In the above example, we’re importing the createContext function from ‘react’ and exporting the createTRPCContext function.

Solution 3: Check for Conflicting Plugins or Middleware

If you’re using plugins or middleware that might be interfering with tRPC, try disabling them temporarily to see if the error resolves:

// next.config.js
module.exports = {
  // Disable plugins or middleware temporarily
  plugins: [],
  middleware: [],
}

Solution 4: Create a Minimal Reproducible Example (MRE)

If the above solutions don’t work, it’s time to create an MRE to isolate the issue:

// Create a new Nextjs project
npx create-next-app my-app

// Install tRPC
npm install trpc

// Create a minimal example
// pages/_app.tsx
import { createTRPCContext } from '../server/api/trpc/[trpc]';

function MyApp({ Component, pageProps }) {
  return (
    <TRPCContext.Provider value={createTRPCContext()}>
      <Component {...pageProps} />
    </TRPCContext.Provider>
  );
}

If the error still persists, try to reproduce the issue in this MRE. If it doesn’t occur, then the issue is likely specific to your original project.

Conclusion

Solving the “Nextjs tRPC Error: (0 , react__WEBPACK_IMPORTED_MODULE_3__.createContext) is not a function” error requires patience, persistence, and a systematic approach. By following the solutions outlined in this article, you should be able to identify and resolve the root cause of the error.

Remember to verify your dependencies, review your imports and exports, check for conflicting plugins or middleware, and create an MRE if necessary. With these steps, you’ll be well on your way to resolving the error and getting your Nextjs and tRPC application up and running smoothly.

Cause	Solution
Incompatible versions of React and tRPC	Verify and update dependencies
Incorrect imports or exports	Review imports and exports
Mismatched dependencies	Verify and update dependencies
Conflicting plugins or middleware	Check for conflicting plugins or middleware

By following this comprehensive guide, you’ll be able to overcome the “Nextjs tRPC Error: (0 , react__WEBPACK_IMPORTED_MODULE_3__.createContext) is not a function” error and focus on building an amazing API-driven application with Nextjs and tRPC!

Frequently Asked Questions

Got stuck with the infamous “Nextjs tRPC Error: (0 , react__WEBPACK_IMPORTED_MODULE_3__.createContext) is not a function” error? Don’t worry, we’ve got you covered! Below are the most frequently asked questions and answers to help you troubleshoot and resolve this pesky issue.