started implementing the garbage collector

src/Types/Array.spec.js

@@ -179,6 +179,27 @@ describe('Array Type', function () {
       await wait(50)
       done()
     })
+    it('garbage collects', async function (done) {
+      var l1, l2, l3
+      l1 = await y1.set('Array', Y.Array)
+      l1.insert(0, ['x', 'y', 'z'])
+      await flushAll()
+      yconfig1.disconnect()
+      l1.delete(0, 3)
+      l2 = await y2.get('Array')
+      await wait()
+      yconfig1.reconnect()
+      await wait()
+      l3 = await y3.get('Array')
+      await flushAll()
+      yconfig1.db.garbageCollect()
+      yconfig1.db.garbageCollect()
+      yconfig1.db.logTable()
+      expect(l1.toArray()).toEqual(l2.toArray())
+      expect(l2.toArray()).toEqual(l3.toArray())
+      expect(l2.toArray()).toEqual([])
+      done()
+    })
   })
   describe(`Random tests`, function () {
     var randomArrayTransactions = [

src/Types/Map.js

@@ -34,10 +34,18 @@
             if (op.left === null) {
               if (op.opContent != null) {
                 delete this.contents[key]
-                this.opContents[key] = op.opContent
+                if (op.deleted) {
+                  delete this.opContents[key]
+                } else {
+                  this.opContents[key] = op.opContent
+                }
               } else {
                 delete this.opContents[key]
-                this.contents[key] = op.content
+                if (op.deleted) {
+                  delete this.contents[key]
+                } else {
+                  this.contents[key] = op.content
+                }
               }
               this.map[key] = op.id
               var insertEvent = {
@@ -54,11 +62,8 @@
             }
           } else if (op.struct === 'Delete') {
             if (compareIds(this.map[key], op.target)) {
-              if (this.opContents[key] != null) {
-                delete this.opContents[key]
-              } else {
-                delete this.contents[key]
-              }
+              delete this.opContents[key]
+              delete this.contents[key]
               var deleteEvent = {
                 name: key,
                 object: this,