Unexpected type

[roj1512]

Describe the issue

The type of the .data of the response is the same type of what was submitted in the request.

Example Code

const form: FormData = new FormData();

const { data } = await axiosInstance.request({data: form});

// The type of data is `FormData`, why? It should be any or something else. The response is never FormData.

Expected behavior, if applicable

Type of data in the response should be any or something else.

Environment

• Axios Version: 0.22.0
• Adapter: HTTP
• Browser: N/A
• Browser Version: N/A
• Node.js Version: 16.9.1
• TypeScript Version: 4.4.3
• OS: Linux
• Additional Library Versions: N/A

Additional context/Screenshots

N/A

[mattfredericksen]

Seems to be related to #4111 / #4130. Appears to be fixed by #4116.

[roj1512]

Is it fixed or made a problem by #4116?

[balassanne]

I have a similar problem I think...
Previous to axios 0.22.0 I could use the following line of code:

const responseBody = <T> (response: AxiosResponse<T>) => response.data;

const requests = {
post: <T>(url: string, body: {}) => axios.post<T>(url, body).then(responseBody)
}

After updating, I get an error saying: "Argument of type '{}' is not assignable to parameter of type 'T' . 'T' could be instantiated with an arbitrary type which could be unrelated to '{}' .

There are a lot more broken in my axios code when moving from 0.21.4 to 0.22.0. I guess I will stick to 0.21.4 ...

[remcohaszing]

This is a duplicate of #4109 which was fixed by #4116

[karlhorky]

@rojserbest can you confirm that this is fixed now and if so, close this issue?

[roj1512]

It was fixed. I would prefer data was any instead of unknown, anyway.

[roj1512]

Closing this.

[karlhorky]

Thanks!