'headers' does not exist in type 'Partial<APIParameters>'

[obochurkin]

The issue is with the api.d.ts file itself. It is not allowed to pass headers as there is a RequestInit interface not reachable.
Here is a code example:

const createPagerDutyIncident = (pd: PartialCall, incidentData: IncidentDataType) => {
    return pd.post('/incidents', {
        headers: {
            From: '**@**.**'
        },
        data: incidentData
    });
}

and here is the TS error:

Argument of type '{ headers: { From: string; }; data: IncidentDataType; }' is not assignable to parameter of type 'Partial<APIParameters>'.
  Object literal may only specify known properties, and 'headers' does not exist in type 'Partial<APIParameters>'.ts(2345)

RequestInit interface should be inside npm package.

[UPD] this issue occurs if you not using lib dom in tsconfig file.