Newest version breaks quickstart documentation

[bakkot]

Expected Behavior

The code on this page should work.

Actual Behavior

TypeError: Cannot use 'in' operator to search for 'text' in H
    at validateChatHistory ([...]@google/generative-ai/dist/index.mjs:758:25)

Steps to Reproduce the Problem

Run the code from the sample:

const { GoogleGenerativeAI } = require("@google/generative-ai");

// Access your API key as an environment variable (see "Set up your API key" above)
const genAI = new GoogleGenerativeAI(process.env.API_KEY);

async function run() {
  // For text-only input, use the gemini-pro model
  const model = genAI.getGenerativeModel({ model: "gemini-pro"});

  const chat = model.startChat({
    history: [
      {
        role: "user",
        parts: "Hello, I have 2 dogs in my house.",
      },
      {
        role: "model",
        parts: "Great to meet you. What would you like to know?",
      },
    ],
    generationConfig: {
      maxOutputTokens: 100,
    },
  });

  const msg = "How many paws are in my house?";

  const result = await chat.sendMessage(msg);
  const response = await result.response;
  const text = response.text();
  console.log(text);
}

run();

Specifications

• Version: @google/generative-ai": "^0.3.0
• Platform: node

---

Specifically, I believe this was broken by #32. It would be trivial to make that change backwards-compatible by having validateChatHistory branch on whether parts is a string or array (or otherwise error), but either way the documentation should be updated.

[AjBillel]

@bakkot yep right, it was an issue with the latest version

I try using an older version of gemini, it works for me

<script type="importmap"> { "imports": { "@google/generative-ai": "https://esm.run/@google/generative-ai@0.2.1" } } </script>

[khammami]

The documentation needs to be updated or as @bakkot said to make it backwards-compatible would be good too.
There's no need to use an older version, just update the JSON of chat history/prompt to match function calling new format.

const chat = model.startChat({
    history: [
      {
        role: "user",
        parts: {
                   "text": "Hello, I have 2 dogs in my house."
               },
      },
      {
        role: "model",
        parts: {
                   "text": "Great to meet you. What would you like to know?"
                },
      },
    ],
    generationConfig: {
      maxOutputTokens: 100,
    },
  });

[alx13]

Quick start documentation is now updated to reflect changes in PR