Add append event support (#34)

* Add append event support

* Latest orbit-db-store version.

Author: vaultec81

package.json

@@ -1,6 +1,6 @@
 {
   "name": "orbit-db-eventstore",
-  "version": "1.8.0",
+  "version": "1.9.0",
   "description": "Eventlog for orbit-db",
   "main": "src/EventStore.js",
   "homepage": "https://github.com/orbitdb/orbit-db-eventstore",
@@ -21,7 +21,7 @@
   "author": "Haad",
   "license": "MIT",
   "dependencies": {
-    "orbit-db-store": "~3.1.0"
+    "orbit-db-store": "~3.3.0"
   },
   "devDependencies": {
     "standard": "^12.0.1"

src/EventStore.js

@@ -9,7 +9,10 @@ class EventStore extends Store {
   constructor (ipfs, id, dbname, options = {}) {
     if (options.Index === undefined) Object.assign(options, { Index: EventIndex })
     super(ipfs, id, dbname, options)
-    this._type = 'eventlog'
+    this._type = 'eventlog';
+    this.events.on("log.op.ADD", (address, hash, payload) => {
+      this.events.emit("db.append", payload.value)
+    })
   }
 
   add (data, options = {}) {
@@ -23,7 +26,6 @@ class EventStore extends Store {
   get (hash) {
     return this.iterator({ gte: hash, limit: 1 }).collect()[0]
   }
-
   iterator (options) {
     const messages = this._query(options)
     let currentIndex = 0