Zod parsing error on DONE token

[jbergs-dsit]

It seems that Zod struggles to parse API responses at times.

Unexpected token 'D', \"[DONE]\" is not valid JSON",
I've only stumbled across this in our server logs and have not been able to properly reproduce this error.

Has anyone else come across this?

---

client

      const mistral = new Mistral({ apiKey: apiKey, serverURL: customBaseURL });

      const result = await mistral.chat.stream({
        model,
        messages: messages as MistralMessage[],
        maxTokens,
      });

error

 {
    "code": "custom",
    "message": "malformed json: SyntaxError: Unexpected token 'D', \"[DONE]\" is not valid JSON",
    "path": [
      "data"
    ]
  }
]
ZodError: [
  {
    "code": "custom",
    "message": "malformed json: SyntaxError: Unexpected token 'D', \"[DONE]\" is not valid JSON",
    "path": [
      "data"
    ]
  }
]
    at get error [as error] (/usr/src/app/apps/someApp/dist/index.js:36801:27)
    at _ZodObject.parse (/usr/src/app/apps/someApp/dist/index.js:36905:22)
    at decoder (/usr/src/app/apps/someApp/dist/index.js:48267:27)
    at parseEvent (/usr/src/app/apps/someApp/dist/index.js:41444:14)
    at [Symbol.asyncIterator] (/usr/src/app/apps/someApp/dist/index.js:41341:29)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Object.start (/usr/src/app/apps/someApp/dist/index.js:56920:26)

[GaspardBT]

Hey thanks for reporting the issue.
Could you provide more info, if possible:

• model name
• queries samples
• time window
  So we can look if it correlate with a specific change in our API (if you want to not release those info publicly you can go through our platform help center here)

[jbergs-dsit]

we're using Large 2507 deployed on Azure.
I see in your docs that streams are expected to send back data: 'DONE' completion events [here] but again in CompletionResponse that doesn't seem to be accounted for [here]

[jbergs-dsit]

Maybe could there at least be some callback handlers added in the code e.g. onError etc so we can handle the ZOD error the code throws a bit better?