Error: Named export '...' not found in Next.js: Causes and How to Fix

Understanding the Error

• This error often arises in Next.js when you're trying to import a named export from a module, but that export does not exist in the module’s source file. This can happen due to a misspelling in the export or because the export you're attempting to use has not been defined or incorrectly defined.

 

• Another common cause can be an incorrect path or a mismatched module structure. When this happens, the module you're trying to access doesn't export the named item at all, perhaps due to file restructuring or incorrect import statements.

JavaScript/TypeScript Module Issues

• Named exports must be defined explicitly in JavaScript or TypeScript modules. If an export is missing, it might be due to forgetting the explicit export statement in the module file. For instance:

  \`\`\`javascript
  // myModule.js
  const someFunction = () => {};
  
  // The error would occur if you try to import this like such:
  export { anotherFunction }; // but anotherFunction isn't defined
  
  // Correct export would be:
  export { someFunction };
  \`\`\`
  

 

• This error can also occur due to changes in the module that were not updated across the application. Such changes could include renaming an export or forgetting to update all usage locations after a refactor.

Improper Import Statements

• When importing, the syntax used can cause this error if misunderstood. For instance, attempting to import a default export as a named export will result in this error:

  \`\`\`javascript
  // myModule.js
  const defaultExport = () => {};
  
  export default defaultExport;
  
  // Incorrect import leading to the error:
  import { defaultExport } from './myModule';
  
  // Correct import:
  import defaultExport from './myModule';
  \`\`\`
  

Module Pathing Issues

• Incorrect pathing also leads to this error, usually typographical errors or misunderstandings about directory structure. Next.js module resolution might expect a specific path, and any deviation can lead to missing exports being perceived, resulting in this error.

 

• Changes in project structure without corresponding updates to import paths can cause existing imports to break, leading to mismatches and export errors.

Third-Party Libraries

• When importing named exports from third-party libraries, ensure that the library indeed has the named export in its version you are using. Sometimes, library documentation might be for a different version than what you have installed, leading to this disconnect.

 

• Review the library’s release notes or changelog to verify if the named exports you intend to use have been deprecated or renamed.

Build Configuration Issues

• Sometimes, issues in build configurations can obscure the available exports. If a module export is gated by a certain configuration setup or depends on specific build tools or versions, any misconfiguration could lead to exports not being available at the time of app execution.

These are the usual suspects when you encounter the "Named export '...' not found" error in Next.js. Carefully reviewing your code's export definitions, paths, and any third-party dependencies will help in understanding why this might occur in your situation.