rsnext/examples/cms-sanity/lib/sanity.js

import {
  createImageUrlBuilder,
  createPreviewSubscriptionHook,
} from 'next-sanity'
import { sanityConfig } from './config'

export const imageBuilder = createImageUrlBuilder(sanityConfig)

export const urlForImage = (source) =>
  imageBuilder.image(source).auto('format').fit('max')

export const usePreviewSubscription =
  createPreviewSubscriptionHook(sanityConfig)