diff --git a/examples/yjs-dist.esm b/examples/yjs-dist.esm
index 4434e027..cecc1d9b 100644
--- a/examples/yjs-dist.esm
+++ b/examples/yjs-dist.esm
@@ -3,7 +3,7 @@ import Y from '../src/y.js'
 import yArray from '../../y-array/src/y-array.js'
 import yIndexedDB from '../../y-indexeddb/src/y-indexeddb.js'
 import yMap from '../../y-map/src/y-map.js'
-import yText from '../../y-text/src/Text.js'
+import yText from '../../y-text/src/y-text.js'
 import yXml from '../../y-xml/src/y-xml.js'
 import yWebsocketsClient from '../../y-websockets-client/src/y-websockets-client.js'
 
diff --git a/src/Utils.js b/src/Utils.js
index 823353b4..e0d3aa15 100644
--- a/src/Utils.js
+++ b/src/Utils.js
@@ -902,4 +902,34 @@ export default function Utils (Y) {
     }
     return args
   }
+
+  Y.utils.writeObjectToYMap = function writeObjectToYMap (object, type) {
+    for (var key in object) {
+      var val = object[key]
+      if (Array.isArray(val)) {
+        type.set(key, Y.Array)
+        Y.utils.writeArrayToYArray(val, type.get(key))
+      } else if (typeof val === 'object') {
+        type.set(key, Y.Map)
+        Y.utils.writeObjectToYMap(val, type.get(key))
+      } else {
+        type.set(key, val)
+      }
+    }
+  }
+
+  Y.utils.writeArrayToYArray = function writeArrayToYArray (array, type) {
+    for (var i = array.length - 1; i >= 0; i--) {
+      var val = array[i]
+      if (Array.isArray(val)) {
+        type.insert(0, [Y.Array])
+        Y.utils.writeArrayToYArray(val, type.get(0))
+      } else if (typeof val === 'object') {
+        type.insert(0, [Y.Map])
+        Y.utils.writeObjectToYMap(val, type.get(0))
+      } else {
+        type.insert(0, [val])
+      }
+    }
+  }
 }