migrate to "export default"

also, set no-use-before-define in linter

src/groups.js

@@ -3,30 +3,12 @@ import assert from 'node:assert';
 import BoxError from './boxerror.js';
 import constants from './constants.js';
 import crypto from 'node:crypto';
-import * as database from './database.js';
+import database from './database.js';
 import eventlog from './eventlog.js';
 import safe from 'safetydance';
 
 const _getMembership = getMembership;
 
-export {
-    add,
-    del,
-    get,
-    getByName,
-    update,
-    setName,
-    getWithMembers,
-    list,
-    listWithMembers,
-    getMemberIds,
-    setMembers,
-    isMember,
-    setLocalMembership,
-    resetSources,
-    setAllowedApps,
-    _getMembership,
-};
 
 const GROUPS_FIELDS = [ 'id', 'name', 'source' ].join(',');
 
@@ -307,3 +289,22 @@ async function setAllowedApps(group, appIds, auditSource) {
         await apps.update(app.id, { accessRestriction });
     }
 }
+
+export default {
+    add,
+    del,
+    get,
+    getByName,
+    update,
+    setName,
+    getWithMembers,
+    list,
+    listWithMembers,
+    getMemberIds,
+    setMembers,
+    isMember,
+    setLocalMembership,
+    resetSources,
+    setAllowedApps,
+    _getMembership,
+};