Describe the bug

When using axios's getUri function with a callback provided to paramsSerializer configuration option, the callback is not respected.

There is a minimal reproducible code snippet attached to this bug report.

See full example on codesandbox:

https://codesandbox.io/p/sandbox/l4q5g3

To Reproduce

Create an axios instance and attempt to call getUri with a CustomParamsSerializer callback provided to paramsSerializer.

Code snippet

const AXIOS = new Axios({});

return AXIOS.getUri({
  url: "https://www.example.com/api",
  params: {hello: "world"},
  paramsSerializer: () => "foo=bar"
});

Expected behavior

URI should be:

https://www.example.com/api?foo=bar

URI is instead:

https://www.example.com/api?hello=world

Axios Version

1.7.7

Adapter Version

No response

Browser

Chrome

Browser Version

130

Node.js Version

No response

OS

No response

Additional Library Versions

React 18

Additional context/Screenshots

No response