Why I can't import the TExtLoader in Next.js ?

[Elindo586]

code:

import { TextLoader } from "langchain/document_loaders/fs/text";

Error:

import { TextLoader } from "langchain/document_loaders/fs/text";
^^^^^^

SyntaxError: Cannot use import statement outside a module

^^^ I am working with other items from Langchain in Next.js with no problem, but I don't understand why am I getting an error like this for this file?

[dosubot[bot]]

🤖

The error message you're seeing, SyntaxError: Cannot use import statement outside a module, is a common JavaScript error that occurs when you're trying to use ES6 import syntax in a context where it's not supported.

In your case, it seems like you're trying to import a Python module (TextLoader from langchain/document_loaders/fs/text) into a JavaScript (Next.js) context, which is not possible. Python and JavaScript are different programming languages and their modules/packages are not interchangeable.

If you're trying to use the functionality provided by TextLoader in your Next.js application, you would need to create a backend service using LangChain and then have your Next.js application communicate with this service via HTTP requests.

If you're already doing this and still facing the issue, it could be due to a misconfiguration in your Next.js project. Please provide more information about your setup, including the version of Next.js you're using and how you're integrating LangChain into your project.

Regarding the similar issues in the LangChain repository, they seem to be related to Python import errors within the LangChain project itself, not with importing LangChain modules into a JavaScript context. Therefore, they might not be directly applicable to your situation.

Sources

• Unable to import from langchain.document_loaders
• libs/langchain/langchain/document_loaders/text.py

---

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[Elindo586]

@dosu-bot. No, it isn't a python code... it works fine in a different node application... but I get the error when I transfer the code to Next.js

[dosubot[bot]]

🤖

Hello,

The error message you're seeing is typically related to how Node.js and JavaScript handle modules. However, it's important to note that LangChain, including the TextLoader module, is a Python framework and is not designed to be directly imported into a JavaScript or Next.js application.

The TextLoader class is written in Python and uses Python's built-in open function to read files. This is not compatible with JavaScript or Next.js. Here's a snippet from the TextLoader class for reference:

class TextLoader(BaseLoader):
    """Load text file.

    Args:
        file_path: Path to the file to load.

        encoding: File encoding to use. If `None`, the file will be loaded
        with the default system encoding.

        autodetect_encoding: Whether to try to autodetect the file encoding
            if the specified encoding fails.
    """

(Source: libs/langchain/langchain/document_loaders/text.py)

If you're trying to use LangChain in a Next.js application, you might need to set up a backend service with Python that uses LangChain, and then have your Next.js application communicate with that service.

If you're trying to load text files in Next.js, you might want to look into JavaScript or Node.js libraries that can handle file loading, such as fs in Node.js.

I hope this helps clarify the issue. If you have any other questions or need further clarification, feel free to ask.

Sources

• libs/langchain/langchain/document_loaders/text.py

---

This response is meant to be useful and save you time. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

If you want to continue the conversation, start your reply with @dosu-bot.