Merge pull request Automattic#15131 from Automattic/vkarpov15/Automatticgh-15071-2

fix(document): avoid using childSchemas.path for compatibility with pre-Mongoose-8.8 schemas

Author: vkarpov15

lib/document.js

@@ -3703,8 +3703,10 @@ Document.prototype.$getAllSubdocs = function(options) {
   const subDocs = [];
   function getSubdocs(doc) {
     const newSubdocs = [];
-    for (const { path } of doc.$__schema.childSchemas) {
-      const val = doc.$__getValue(path);
+
+    for (const { model } of doc.$__schema.childSchemas) {
+      // Avoid using `childSchemas.path` to avoid compatibility versions with pre-8.8 versions of Mongoose
+      const val = doc.$__getValue(model.path);
       if (val == null) {
         continue;
       }
@@ -3726,6 +3728,7 @@ Document.prototype.$getAllSubdocs = function(options) {
         }
       }
     }
+
     for (const subdoc of newSubdocs) {
       getSubdocs(subdoc);
     }

lib/utils.js

@@ -631,6 +631,9 @@ exports.getValue = function(path, obj, map) {
 const mapGetterOptions = Object.freeze({ getters: false });
 
 function getValueLookup(obj, part) {
+  if (part === '$*' && obj instanceof Map) {
+    return obj;
+  }
   let _from = obj?._doc || obj;
   if (_from != null && _from.isMongooseArrayProxy) {
     _from = _from.__array;