Move content and list iteration abstraction

tests/encoding.tests.js

@@ -12,6 +12,7 @@ import {
   readContentFormat,
   readContentAny,
   readContentDoc,
+  readContentMove,
   Doc,
   PermanentUserData,
   encodeStateAsUpdate,
@@ -24,7 +25,8 @@ import * as Y from '../src/index.js'
  * @param {t.TestCase} tc
  */
 export const testStructReferences = tc => {
-  t.assert(contentRefs.length === 11)
+  t.assert(contentRefs.length === 12)
+  // contentRefs[0] is reserved for GC
   t.assert(contentRefs[1] === readContentDeleted)
   t.assert(contentRefs[2] === readContentJSON) // TODO: deprecate content json?
   t.assert(contentRefs[3] === readContentBinary)
@@ -35,6 +37,7 @@ export const testStructReferences = tc => {
   t.assert(contentRefs[8] === readContentAny)
   t.assert(contentRefs[9] === readContentDoc)
   // contentRefs[10] is reserved for Skip structs
+  t.assert(contentRefs[11] === readContentMove)
 }
 
 /**