replace customer query with viewer

Signed-off-by: Loan Laux <loan@outgrow.io>

framework/reactioncommerce/customer/use-customer.tsx

@@ -1,20 +1,19 @@
 import useCustomer, { UseCustomer } from '@commerce/customer/use-customer'
 import { Customer } from '@commerce/types'
 import { SWRHook } from '@commerce/utils/types'
-import { getCustomerQuery, getCustomerToken } from '../utils'
+import { viewerQuery } from '../utils'
 
 export default useCustomer as UseCustomer<typeof handler>
 
 export const handler: SWRHook<Customer | null> = {
   fetchOptions: {
-    query: getCustomerQuery,
+    query: viewerQuery,
   },
   async fetcher({ options, fetch }) {
     const data = await fetch<any | null>({
       ...options,
-      variables: { customerAccessToken: getCustomerToken() },
     })
-    return data.customer ?? null
+    return data.viewer ?? null
   },
   useHook: ({ useData }) => (input) => {
     return useData({