ClientFunction: _axios2 is not defined - automated-tests

Question

I'm running TestCafe for UI automation, using ClientFunctions to trigger API requests (so that I can pass along session cookies).
Currently I have a ClientFunction with fetch which works fine... except we're now testing IE 11 and Fetch is unsupported.
Fetch code:
const fetchRequestClientFunction = ClientFunction((details, endpoint, auth, method) => {
return window
.fetch(endpoint, {
method,
credentials: 'include',
headers: new Headers({
accept: 'application/json',
'Content-Type': 'application/json',
}),
body: JSON.stringify(details),
})
.then(httpResponse => {
if (httpResponse.ok) {
return httpResponse.json();
}
return {
err: true,
errorMessage: `There was an error trying to send the data ${JSON.stringify(
details
)} to the API endpoint ${endpoint}. Status: ${httpResponse.status}; Status text: ${httpResponse.statusText}`,
};
});
});
However when I try to switch it to axios... not so much:
import axios from 'axios';
const axiosRequest = ClientFunction((details, endpoint, auth, method) => {
return axios({
method,
auth,
url: endpoint,
data: details,
headers: {
Accept: 'application/json',
'Content-Type': 'application/json',
},
timeout: 3000,
})
.then(httpResponse => {
if (httpResponse.status < 300) return httpResponse;
return {
err: true,
errorMessage: `There was an error trying to send the data ${JSON.stringify(
details
)} to the API endpoint ${endpoint}. Status: ${httpResponse.status}; Status text: ${httpResponse.statusText}`,
};
});
});
Tried using window.axios, and also passing axios as a dependency. I've also tried making the axios request without the ClientFunction... and despite getting response of 200, the website wasn't updated as expected.
Each time I either get _axios2 is not defined or window.axios is not a function. I would greatly appreciate some guidance here.

Answer 1

TestCafe ClientFunctions allow only serializable objects as dependencies. You need to have axios on the client side to send such a request.