initial provider (#2)

framework/medusa/customer/use-customer.tsx

@@ -0,0 +1,27 @@
+import { SWRHook } from '@commerce/utils/types'
+import useCustomer, { UseCustomer } from '@commerce/customer/use-customer'
+import { normalizeCustomer } from '@framework/utils/normalizers/normalize-customer'
+
+export default useCustomer as UseCustomer<typeof handler>
+export const handler: SWRHook<any> = {
+  fetchOptions: {
+    query: 'auth',
+    method: 'getSession',
+  },
+  async fetcher({ options, fetch }) {
+    const data = await fetch({
+      ...options,
+    })
+    return normalizeCustomer(data?.customer) || null
+  },
+  useHook:
+    ({ useData }) =>
+    (input) => {
+      return useData({
+        swrOptions: {
+          revalidateOnFocus: false,
+          ...input?.swrOptions,
+        },
+      })
+    },
+}