create-nodex/dist/templates/ai/openai/typescript/openai-example.ts

CLI tool to create modern Node.js projects with TypeScript, AI capabilities, and more

import { ChatOpenAI } from "@langchain/openai";
import { translateText, askLLM } from "../../common/typescript/ai-setup.js"; // ESM needs .js extension
import dotenv from "dotenv";

dotenv.config(); // Load environment variables from .env file

// Initialize the OpenAI model
// Make sure your OPENAI_API_KEY is set in your .env file or environment variables
const openaiApiKey = process.env.OPENAI_API_KEY;

if (!openaiApiKey) {
  console.error(
    "OPENAI_API_KEY not found. Please set it in your .env file or environment variables."
  );
  process.exit(1);
}

const model = new ChatOpenAI({
  apiKey: openaiApiKey,
  model: "gpt-3.5-turbo", // Or your preferred model like "gpt-4"
  temperature: 0, // Updated temperature
});

async function main() {
  console.log("Running OpenAI examples...");

  // Example 1: Translate text
  const languageToTranslateTo = "Spanish";
  const textToTranslate = "Hello, how are you doing today?";
  console.log(
    `\nTranslating '${textToTranslate}' to ${languageToTranslateTo}...`
  );
  const translation = await translateText(
    model,
    languageToTranslateTo,
    textToTranslate
  );
  if (translation) {
    console.log(`Translation: ${translation}`);
  } else {
    console.log("Translation failed.");
  }

  // Example 2: Ask the LLM a question
  const question = "What is the capital of France?";
  console.log(`\nAsking the LLM: '${question}'...`);
  const answer = await askLLM(model, question);
  if (answer) {
    console.log(`LLM Answer: ${answer}`);
  } else {
    console.log("LLM interaction failed.");
  }

  // Example 3: Ask with system context
  const systemContext =
    "You are a helpful assistant that speaks like a pirate.";
  const pirateQuestion = "Tell me a joke.";
  console.log(`\nAsking the LLM (as a pirate): '${pirateQuestion}'...`);
  const pirateAnswer = await askLLM(model, pirateQuestion, systemContext);
  if (pirateAnswer) {
    console.log(`Pirate LLM Answer: ${pirateAnswer}`);
  } else {
    console.log("Pirate LLM interaction failed.");
  }
}

main().catch(console.error);