This example goes over how to load conversations.json from your ChatGPT data export folder. You can get your data export by email by going to: ChatGPT -> (Profile) - Settings -> Export data -> Confirm export -> Check email.

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Usage, extracting all logs

Example code: 
import { ChatGPTLoader } from "@langchain/community/document_loaders/fs/chatgpt";

const loader = new ChatGPTLoader("./example_data/example_conversations.json");

const docs = await loader.load();

console.log(docs);

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Usage, extracting a single log

Example code: 
import { ChatGPTLoader } from "@langchain/community/document_loaders/fs/chatgpt";

const loader = new ChatGPTLoader(
  "./example_data/example_conversations.json",
  1
);

const docs = await loader.load();

console.log(docs);