fixed part of split/merge logic

src/utils/DeleteSet.js

@@ -189,13 +189,11 @@ export const readDeleteSet = (decoder, transaction, store) => {
          * @type {AbstractItem}
          */
         // @ts-ignore
-        let struct = structs[index++]
-        if (!struct.deleted) {
-          if (struct.id.clock < clock) {
-            struct = struct.splitAt(store, clock - struct.id.clock)
-            structs.splice(index, 0, struct)
-          }
-          struct.delete(transaction)
+        let struct = structs[index]
+        // split the first item if necessary
+        if (!struct.deleted && struct.id.clock < clock) {
+          structs.splice(index + 1, 0, struct.splitAt(store, clock - struct.id.clock))
+          index++ // increase we now want to use the next struct
         }
         while (index < structs.length) {
           // @ts-ignore

src/utils/StructStore.js

@@ -98,7 +98,7 @@ export const addStruct = (store, struct) => {
  */
 export const findIndexSS = (structs, clock) => {
   let left = 0
-  let right = structs.length
+  let right = structs.length - 1
   while (left <= right) {
     const midindex = math.floor((left + right) / 2)
     const mid = structs[midindex]
@@ -112,6 +112,8 @@ export const findIndexSS = (structs, clock) => {
       right = midindex - 1
     }
   }
+  // Always check state before looking for a struct in StructStore
+  // Therefore the case of not finding a struct is unexpected
   throw error.unexpectedCase()
 }
 

src/utils/Y.js

@@ -62,6 +62,8 @@ export class Y extends Observable {
    * other peers.
    *
    * @param {function(Transaction):void} f The function that should be executed as a transaction
+   *
+   * @todo separate this into a separate function
    */
   transact (f) {
     let initialCall = false

src/utils/structEncoding.js

@@ -226,6 +226,9 @@ const execStructReaders = (transaction, store, localState, structReaders, stack)
       }
     }
   }
+  if (stack.length > 0) {
+    store.pendingStructReaders.add({ stack, structReaders, missing: stack[stack.length - 1].id })
+  }
 }
 
 /**