Adding MongoDB as a storage solution in LangChainJS

[ssumaiyaahmed]

Checked

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Feature request

Add a mongodb.js implementation to LangChainJS, inspired by the existing mongodb.py file in the langchain_community/storage folder of LangChain Python. This feature would enable users of LangChainJS to seamlessly integrate MongoDB as a storage solution.

Motivation

The LangChain Python repository includes a mongodb.py file that provides MongoDB storage functionality. However, LangChainJS currently lacks a similar integration. This is a limitation for users who prefer or require a JavaScript/TypeScript ecosystem for their projects but still want consistent MongoDB storage options. Adding mongodb.js would help keep the JavaScript/TypeScript version of the langchain version up to date with the Python version.

Proposal (If applicable)

Develop a mongodb.js file for the langchainjs_community/storage folder that mimics the functionality of mongodb.py.
We would create two classes: MongoDBByteStore and MongoDBStore, which provide interfaces for interacting with a MongoDB database. They would support operations like getting, setting, deleting, and iterating over keys.

[ssumaiyaahmed]

Hey @jacoblee93, we are a group of students from UofT and were wondering if this could be a potential issue that you would want us to work on?