Why does TypeScript report 'Cannot find module "@wxflows/sdk/langchain"' despite installing the dependency?

When you see the error

BASHCopied
Cannot find module '@wxflows/sdk/langchain' or its corresponding type declarations.

it typically means that TypeScript cannot resolve the module, and it’s usually due to one or more of the following reasons:

1. Incorrect Package Installation or Version

   • Ensure that the package is correctly installed in your project. Run:

     BASHCopied
     npm install @wxflows/sdk

     or

     BASHCopied
     yarn add @wxflows/sdk

   • Verify that the installed package version actually includes the “langchain” entry point. Sometimes documentation might reference a version that hasn’t yet been published or requires a specific version.

2. Missing or Incomplete Type Declarations

   • Some packages do not ship with TypeScript types. In this case, you have a couple of options:
     • Check if there is a separate package, such as @types/wxflows__sdk available on npm.
     • If not, you can create a custom declaration file (e.g., src/types/wxflows.d.ts or global.d.ts) with the following content:

       TYPESCRIPTCopied
       declare module '@wxflows/sdk/langchain' {
         // Optionally, add specific type declarations here if you have any reference,
         // otherwise use any:
         const content: any;
         export default content;
       }

     • Include this file in your tsconfig.json under the include array if it's not in a place already picked up by TypeScript.

3. Incorrect Import Path or Module Resolution

   • Confirm that the package’s documentation shows the correct import path. Sometimes the actual module path might differ slightly.
   • If you’re using advanced bundler configurations (like Webpack or TypeScript path aliases), verify that your configuration resolves node modules correctly.

4. Rebuild/Restart Your Development Server

   • Sometimes TypeScript or your IDE might cache module resolution information. Try restarting your development server or IDE to clear any cached module metadata.

Following these steps should help resolve the module-not-found error. If problems persist, consider checking the repository or documentation for any notes on TypeScript integration or asking the package maintainers for assistance.