Fix external login scopes

app/soapbox/utils/scopes.ts

@@ -1,13 +1,14 @@
-import { RootState } from 'soapbox/store';
 
 import { PLEROMA, parseVersion } from './features';
 
+import type { RootState } from 'soapbox/store';
+import type { Instance } from 'soapbox/types/entities';
+
 /**
  * Get the OAuth scopes to use for login & signup.
  * Mastodon will refuse scopes it doesn't know, so care is needed.
  */
-const getScopes = (state: RootState) => {
-  const instance = state.instance;
+const getInstanceScopes = (instance: Instance) => {
   const v = parseVersion(instance.version);
 
   switch (v.software) {
@@ -18,6 +19,13 @@ const getScopes = (state: RootState) => {
   }
 };
 
+/** Convenience function to get scopes from instance in store. */
+const getScopes = (state: RootState) => {
+  return getInstanceScopes(state.instance);
+};
+
+
 export {
+  getInstanceScopes,
   getScopes,
 };