How to Fix 'The requested module does not provide an export named default' Error

Understanding the Error

The error "The requested module does not provide an export named 'default'" often occurs in React projects that use Vite as the build tool. This issue can be frustrating as it seems to appear randomly, even when the code is correctly structured.

In this article, we'll explore the causes of this error, practical solutions, and preventive measures.

Common Scenario

This error typically arises when:

1. Default vs Named Exports: Your module does not provide a default export but is being imported as if it does.

   // File: Component.tsx
   export default function Component() {
     return <div>Hello World</div>
   }
   

   Importing this module incorrectly will cause the error:

   // Incorrect
   import { Component } from './Component'
   
   // Correct
   import Component from './Component'
   

2. Vite's Caching System: Sometimes, Vite's hot module reloading (HMR) or dependency caching creates inconsistencies that trigger this issue.

3. Configuration Issues: Certain settings in tsconfig.json or vite.config.js can also lead to this behavior.

Solutions

1. Verify Your Exports and Imports

Ensure you are matching your export type (default or named) with the correct import syntax.

Default Export Example

// Component.tsx
export default function Component() {
  return <div>Hello from Default Export</div>
}

// App.tsx
import Component from './Component'

Named Export Example

// Component.tsx
export function Component() {
  return <div>Hello from Named Export</div>
}

// App.tsx
import { Component } from './Component'

2. Clear Vite's Cache

Vite caches dependencies in a .vite folder under node_modules. Corrupted or outdated cache can cause this error.

Steps to Clear Cache:

1. Delete the .vite folder inside node_modules.

2. Restart your development server:

   npm run dev
   

3. Update tsconfig.json

Add or ensure the following setting in your tsconfig.json file:

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true
  }
}

This allows you to import modules with a default export without issues.

4. Restart the Development Server

Sometimes, the error is resolved by simply restarting the Vite server.

npm run dev

5. Check for Module Updates

Outdated dependencies may be the root cause. Update Vite and related plugins:

npm install vite@latest

FAQs

Why does this error occur randomly?

Vite's hot module reloading (HMR) and dependency caching mechanisms can sometimes cause inconsistencies. Restarting the server or clearing the cache often resolves this.

Can this error occur in other frameworks?

Yes, similar issues may occur in other frameworks or build tools that use ES modules, such as Webpack or Rollup.

How do I prevent this error in the future?

• Consistently use the correct import/export syntax.
• Clear Vite's cache periodically during active development.
• Keep your build tool and dependencies up-to-date.