chatGPT node.js CLI chat interface - as simple as posible. npm install openai langchain, then node chatgpt-cli.js and youre there.

chatgpt-cli.js

//npm install openai langchain

async function loadModules() {
  const openaiModule = await import("langchain/chat_models/openai");
  const schemaModule = await import("langchain/schema");
  const { ChatOpenAI } = openaiModule;
  const { HumanChatMessage, SystemChatMessage } = schemaModule;
  const chat = new ChatOpenAI({ openAIApiKey: 'sk-YOURKEY', temperature: 0 });
  // Now you can use the chat object to interact with the model:
  
    

async function generateOutput(message) {
  const response = await chat.call([
    new HumanChatMessage(message)
  ]);
  return response;
}


//chat on a loop until ctrl-c
function chatloop() {
    const readline = require('readline');
    const rl = readline.createInterface({
      input: process.stdin,
      output: process.stdout
    });
    
    rl.prompt()
    rl.on('line', async (input) => {
      const response = await generateOutput(input);
      if ('text' in response) {
        console.log('\x1b[32m%s\x1b[0m',response.text);
      }
      if('error' in response) {
          console.log('Error:',response.error)
      }
      rl.prompt()
    });
    
    rl.on('SIGINT', () => {
      rl.close();
    });
} 
chatloop()

}//END
loadModules().catch(error => {
  console.error(`Failed to load modules: ${error}`);
});