From b1eabfca2445f8603a2357b03c11aab9f3b48da9 Mon Sep 17 00:00:00 2001
From: Kevin Jahns <kevin.jahns@rwth-aachen.de>
Date: Fri, 6 Oct 2017 23:49:01 +0200
Subject: [PATCH] add toJSON method

---
 src/y-map.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/y-map.js b/src/y-map.js
index 268be2e..966e6e6 100644
--- a/src/y-map.js
+++ b/src/y-map.js
@@ -94,6 +94,21 @@ export default function extendYMap (Y) {
       this.os = null
       this.map = null
     }
+    toJSON () {
+      var obj = {}
+      for (let key in this.contents) {
+        obj[key] = this.contents[key]
+      }
+      for (let key in this.opContents) {
+        let type = this.os.getType(this.opContents[key])
+        if (type.toJSON != null) {
+          obj[key] = type.toJSON()
+        } else if (type.toString != null) {
+          obj[key] = type.toString()
+        }
+      }
+      return obj
+    }
     get (key) {
       // return property.
       // if property does not exist, return null