migrate to "export default"

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

src/ldapserver.js

@@ -1,4 +1,4 @@
-import * as addonConfigs from './addonconfigs.js';
+import addonConfigs from './addonconfigs.js';
 import assert from 'node:assert';
 import apps from './apps.js';
 import AuditSource from './auditsource.js';
@@ -6,11 +6,11 @@ import BoxError from './boxerror.js';
 import constants from './constants.js';
 import debugModule from 'debug';
 import eventlog from './eventlog.js';
-import * as groups from './groups.js';
+import groups from './groups.js';
 import ldap from 'ldapjs';
-import * as mail from './mail.js';
+import mail from './mail.js';
 import safe from 'safetydance';
-import * as users from './users.js';
+import users from './users.js';
 import util from 'node:util';
 
 const debug = debugModule('box:ldapserver');
@@ -21,12 +21,6 @@ function _setMockApp(app) {
     _MOCK_APP = app;
 }
 
-export {
-    start,
-    stop,
-    _MOCK_APP,
-    _setMockApp,
-};
 
 let gServer = null;
 
@@ -711,3 +705,10 @@ async function stop() {
     await util.promisify(gServer.close.bind(gServer))();
     gServer = null;
 }
+
+export default {
+    start,
+    stop,
+    _MOCK_APP,
+    _setMockApp,
+};