AI_NoObjectGeneratedError

This error occurs when the AI provider fails to generate a parsable object that conforms to the schema. It can arise due to the following reasons:

• The model failed to generate a response.
• The model generated a response that could not be parsed.
• The model generated a response that could not be validated against the schema.

Properties

• message: The error message (optional, defaults to 'No object generated.').
• text: The text that was generated by the model. This can be the raw text or the tool call text, depending on the object generation mode (optional).
• response: Metadata about the language model response, including response id, timestamp, and model (required in constructor).
• usage: Request token usage (required in constructor).
• finishReason: Request finish reason. For example 'length' if model generated maximum number of tokens, this could result in a JSON parsing error (required in constructor).
• cause: The cause of the error (e.g. a JSON parsing error). You can use this for more detailed error handling (optional).

Checking for this Error

You can check if an error is an instance of AI_NoObjectGeneratedError using:

import { generateText, NoObjectGeneratedError, Output } from 'ai';

try {
  await generateText({ model, output: Output.object({ schema }), prompt });
} catch (error) {
  if (NoObjectGeneratedError.isInstance(error)) {
    console.log('NoObjectGeneratedError');
    console.log('Cause:', error.cause);
    console.log('Text:', error.text);
    console.log('Response:', error.response);
    console.log('Usage:', error.usage);
    console.log('Finish Reason:', error.finishReason);
  }
}