migrate to "export default"

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

src/dns/namecheap.js

@@ -2,9 +2,9 @@ import assert from 'node:assert';
 import BoxError from '../boxerror.js';
 import constants from '../constants.js';
 import debugModule from 'debug';
-import * as dig from '../dig.js';
-import * as dns from '../dns.js';
-import * as network from '../network.js';
+import dig from '../dig.js';
+import dns from '../dns.js';
+import network from '../network.js';
 import safe from 'safetydance';
 import superagent from '@cloudron/superagent';
 import timers from 'timers/promises';
@@ -14,15 +14,6 @@ import xml2js from 'xml2js';
 
 const debug = debugModule('box:dns/namecheap');
 
-export {
-    removePrivateFields,
-    injectPrivateFields,
-    upsert,
-    get,
-    del,
-    verifyDomainConfig,
-    wait
-};
 
 const ENDPOINT = 'https://api.namecheap.com/xml.response';
 
@@ -285,3 +276,12 @@ async function verifyDomainConfig(domainObject) {
     return credentials;
 }
 
+export default {
+    removePrivateFields,
+    injectPrivateFields,
+    upsert,
+    get,
+    del,
+    verifyDomainConfig,
+    wait
+};