Implemented support for composite type, fixed insert type issues for y-array

package.json

@@ -1,6 +1,6 @@
 {
   "name": "yjs",
-  "version": "9.0.4",
+  "version": "9.1.0",
   "description": "A framework for real-time p2p shared editing on arbitrary complex data types",
   "main": "./src/y.js",
   "scripts": {

src/Database.js

@@ -205,9 +205,7 @@ module.exports = function (Y /* :any */) {
       this.userIdPromise.then(f)
     }
     getNextOpId () {
-      if (this._nextUserId != null) {
+      if (this.userId == null) {
-        return this._nextUserId
-      } else if (this.userId == null) {
         throw new Error('OperationStore not yet initialized!')
       } else {
         return [this.userId, this.opClock++]

src/Struct.js

@@ -64,7 +64,7 @@ module.exports = function (Y/* :any */) {
         if (op.parentSub != null) {
           e.parentSub = op.parentSub
         }
-        if (op.opContent != null) {
+        if (op.hasOwnProperty('opContent')) {
           e.opContent = op.opContent
         } else {
           e.content = op.content

src/Transaction.js

@@ -99,9 +99,9 @@ module.exports = function (Y/* :any */) {
       }
       return t
     }
-    * createType (typedefinition) {
+    * createType (typedefinition, id) {
       var structname = typedefinition.struct
-      var id = this.store.getNextOpId()
+      id = id || this.store.getNextOpId()
       var op = Y.Struct[structname].create(id)
       op.type = typedefinition.name
       yield* this.applyCreatedOperations([op])
@@ -653,14 +653,20 @@ module.exports = function (Y/* :any */) {
       if (o != null || id[0] !== '_') {
         return o
       } else {
-        // need to generate this operation
+        // generate this operation?
-        if (this.store._nextUserId == null) {
+        if (typeof id[1] === 'string') {
-          var struct = id[1].split('_')[0]
+          var comp = id[1].split('_')
-          // this.store._nextUserId = id
+          if (comp.length > 1) {
-          var op = Y.Struct[struct].create(id)
+            var struct = comp[0]
-          yield* this.setOperation(op)
+            var op = Y.Struct[struct].create(id)
-          // delete this.store._nextUserId
+            yield* this.setOperation(op)
-          return op
+            return op
+          } else {
+            // won't be called. but just in case..
+            console.error('Unexpected case. How can this happen?')
+            debugger // eslint-disable-line
+            return null
+          }
         } else {
           // Can only generate one operation at a time
           return null