domains: remove SECRET_PLACEHOLDER from responses

src/dns/inwx.js

@@ -1,15 +1,5 @@
 'use strict';
 
-exports = module.exports = {
-    removePrivateFields,
-    injectPrivateFields,
-    upsert,
-    get,
-    del,
-    wait,
-    verifyDomainConfig
-};
-
 const { ApiClient, Language } = require('domrobot-client'),
     assert = require('node:assert'),
     BoxError = require('../boxerror.js'),
@@ -25,12 +15,12 @@ function formatError(response) {
 }
 
 function removePrivateFields(domainObject) {
-    domainObject.config.password = constants.SECRET_PLACEHOLDER;
+    delete domainObject.config.password;
     return domainObject;
 }
 
 function injectPrivateFields(newConfig, currentConfig) {
-    if (newConfig.password === constants.SECRET_PLACEHOLDER) newConfig.password = currentConfig.password;
+    if (!Object.hasOwn(newConfig, 'password')) newConfig.password = currentConfig.password;
 }
 
 // https://www.inwx.com/en/help/apidoc/f/ch04.html
@@ -217,3 +207,13 @@ async function verifyDomainConfig(domainObject) {
 
     return credentials;
 }
+
+exports = module.exports = {
+    removePrivateFields,
+    injectPrivateFields,
+    upsert,
+    get,
+    del,
+    wait,
+    verifyDomainConfig
+};