app.ts

import { OpenAI, PromptTemplate } from "langchain";
import { StructuredOutputParser } from "langchain/output_parsers";
import fs from 'fs';
import { ChatOpenAI } from "langchain/chat_models";
import { HumanChatMessage, SystemChatMessage } from "langchain/schema";

//Load environment variables (populate process.env from .env file)
import * as dotenv from "dotenv";
dotenv.config();


const chat = new ChatOpenAI({ temperature: 0 });

export const run = async () => {
  const response = await chat.call([
    new HumanChatMessage(
      "give me a nextjs component that renders an h1 tag with the text Starmorph'"
    ),
  ]);

  try {
    await fs.promises.writeFile('response.txt', JSON.stringify(response, null, 2));
    console.log('File saved successfully.');
  } catch (err) {
    console.error('Error writing file:', err);
  }


  const removeEscapedCharacters = (str: string) => {
    return str.replace(/\\n/g, '\n');
  };
  
  const processFile = async () => {
    try {
      // Read the JSON file
      const fileContent = await fs.promises.readFile('response.txt', 'utf8');
  
      // Parse the JSON content
      const jsonData = JSON.parse(fileContent);
  
      // Extract the 'text' property and remove escaped characters
      const text = removeEscapedCharacters(jsonData.text);
  
      // Save the result to a new file
      await fs.promises.writeFile('output.txt', text);
      console.log('File processed successfully.');
    } catch (err) {
      console.error('Error processing file:', err);
    }
  };
  
  processFile();

  
  console.log(response);
};
run();