import Medusa from "@medusajs/medusa-js"
const medusa = new Medusa({ baseUrl: MEDUSA_BACKEND_URL, maxRetries: 3 })
// must be previously logged in or use api token
medusa.admin.shippingOptions.create({
  name: 'PostFake',
  region_id: "saasf",
  provider_id: "manual",
  data: {
  },
  price_type: 'flat_rate'
})
.then(({ shipping_option }) => {
  console.log(shipping_option.id);
});