Merge branch 'jakob/admin-period-result' of https://github.com/uzh-bf…

…/gbl-uzh into jakob/admin-period-result

packages/platform/src/lib/apollo.ts

@@ -15,10 +15,19 @@ function createIsomorphLink() {
     credentials: 'same-origin',
   })
 
-  if (!process.env.NEXT_PUBLIC_API_URL) {
+function createIsomorphLink() {
+  const isBrowser = typeof window !== 'undefined'
+
+  const apiUrl = process.env.NEXT_PUBLIC_API_URL
+  if (typeof apiUrl !== 'string' || !apiUrl) {
     throw new Error('NEXT_PUBLIC_API_URL is not set')
   }
 
+  let httpLink: ApolloLink = new HttpLink({
+    uri: apiUrl,
+    credentials: 'same-origin',
+  })
+
   // on the client, differentiate between links for query/mutation and subscriptions
   if (isBrowser) {
     const sseLink = new SSELink({