generateStream has empty (await response).text

[handihow]

Affected plugin(s)

• Anthropic
• Azure OpenAI
• Cohere
• Convex
• Groq
• Mistral
• [ x ] OpenAI

Describe the bug
generateStream has empty (await response).text when using OpenAI models

To Reproduce
Steps to reproduce the behavior:

const { stream, response } = await aiInstance.generateStream(
generateConfig
);

for await (const chunk of stream) {
console.log(chunk.text) // works fine
}
const result = await response;
console.log(result.text); // string is empty

Expected behavior
When using Anthropic models or Groq models, the text property on the response is the concatenated string of the chunks as expected

Screenshots

Plugin(s) version:
"genkitx-anthropic": "^0.12.0",
"genkitx-groq": "^0.12.0",
"genkitx-openai": "^0.12.0",
Genkit version:
"genkit": "^0.9.12",

Additional context
Add any other context about the problem here.

[xavidop]

@Dabolus can you take a look at this one?