diff --git a/package.json b/package.json
index cb39e534..5137c067 100644
--- a/package.json
+++ b/package.json
@@ -76,7 +76,7 @@
   },
   "homepage": "https://docs.yjs.dev",
   "dependencies": {
-    "lib0": "^1.0.0-rc.5"
+    "lib0": "^1.0.0-rc.7"
   },
   "devDependencies": {
     "@types/node": "^22.14.1",
diff --git a/src/index.js b/src/index.js
index d81bc5e8..97d9f447 100644
--- a/src/index.js
+++ b/src/index.js
@@ -122,7 +122,10 @@ export {
   intersectUpdateWithContentIds,
   intersectUpdateWithContentIdsV2,
   createDocFromUpdate,
-  createDocFromUpdateV2
+  createDocFromUpdateV2,
+  $ytype,
+  $ytypeAny,
+  $attributionManager
 } from './internals.js'
 
 export * from './utils/meta.js'
diff --git a/src/utils/AttributionManager.js b/src/utils/AttributionManager.js
index d7500fc8..aecd42ed 100644
--- a/src/utils/AttributionManager.js
+++ b/src/utils/AttributionManager.js
@@ -143,6 +143,8 @@ export class AbstractAttributionManager extends ObservableV2 {
   }
 }
 
+export const $attributionManager = AbstractAttributionManager.prototype.$type = s.$type('y:am', AbstractAttributionManager)
+
 /**
  * @implements AbstractAttributionManager
  *
@@ -159,6 +161,8 @@ export class TwosetAttributionManager extends ObservableV2 {
     this.deletes = deletes
   }
 
+  get $type () { return $attributionManager }
+
   /**
    * @param {Array<AttributedContent<any>>} contents - where to write the result
    * @param {number} client
@@ -204,6 +208,8 @@ export class TwosetAttributionManager extends ObservableV2 {
  * @extends {ObservableV2<{change:(idset:IdSet,origin:any,local:boolean)=>void}>}
  */
 export class NoAttributionsManager extends ObservableV2 {
+  get $type () { return $attributionManager }
+
   /**
    * @param {Array<AttributedContent<any>>} contents - where to write the result
    * @param {number} _client
@@ -449,6 +455,8 @@ export class DiffAttributionManager extends ObservableV2 {
     prevDoc.on('destroy', this._destroyHandler)
   }
 
+  get $type () { return $attributionManager }
+
   destroy () {
     super.destroy()
     this._nextDoc.off('destroy', this._destroyHandler)
@@ -602,6 +610,8 @@ export class SnapshotAttributionManager extends ObservableV2 {
     this.attrs = mergeIdMaps([diffIdMap(inserts, prevSnapshot.ds), deletes])
   }
 
+  get $type () { return $attributionManager }
+
   /**
    * @param {Array<AttributedContent<any>>} contents - where to write the result
    * @param {number} client
diff --git a/src/ytype.js b/src/ytype.js
index ef98d0ef..bac8c382 100644
--- a/src/ytype.js
+++ b/src/ytype.js
@@ -23,7 +23,6 @@ import {
 } from './internals.js'
 
 import * as contentType from './structs/ContentType.js'
-
 import * as traits from 'lib0/traits'
 import * as delta from 'lib0/delta'
 import * as array from 'lib0/array'
@@ -1437,6 +1436,14 @@ export class YType {
   }
 }
 
+/**
+ * @template {import('lib0/delta').ReadableDeltaConf} DConf
+ * @param {DConf} _dconf
+ * @return {s.Schema<YType<import('lib0/delta').ReadDeltaConf<DConf>>>}
+ */
+export const $ytype = _dconf => s.$instanceOf(YType)
+export const $ytypeAny = s.$instanceOf(YType)
+
 /**
  * @param {import('./utils/UpdateDecoder.js').UpdateDecoderV1 | import('./utils/UpdateDecoder.js').UpdateDecoderV2} decoder
  * @return {YType}
diff --git a/tests/snapshot.tests.js b/tests/snapshot.tests.js
index d64205ee..501de1c3 100644
--- a/tests/snapshot.tests.js
+++ b/tests/snapshot.tests.js
@@ -232,7 +232,8 @@ export const testContainsUpdate = _tc => {
  * @param {t.TestCase} _tc
  */
 export const testContainsUpdate2 = _tc => {
-  const local = new Y.Doc(), remote = new Y.Doc()
+  const local = new Y.Doc()
+  const remote = new Y.Doc()
   local.get('t').insert(0, 'abcdefghij')
   local.get('t').delete(0, 3)
   Y.applyUpdate(remote, Y.encodeStateAsUpdate(local))