getHeaders.js

async function getHeaders() {
  const headers = {}
  const jwt = // whatever logic you need to fetch your JWT, possible from pinia etc

  if (jwt) {
    headers['Authorization'] = `Bearer ${jwt}`
  }

  headers['Content-Type'] = 'application/json'
  return headers
}

const defaultOptions = {
  query: {
    errorPolicy: 'all',
  },
  mutate: {
    errorPolicy: 'all',
  },
}