Add .toJSON() to subdocs

Author: hesselbom

package.json

@@ -1,6 +1,6 @@
 {
   "name": "crdtmap",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "license": "MIT",
   "main": "./dist/crdtmap.cjs",
   "scripts": {

src/index.js

@@ -188,6 +188,17 @@ function CrdtMap (options) {
           })
 
           return results
+        },
+        toJSON: function () {
+          const obj = {}
+
+          map.forEach((value, key) => {
+            if (value.data !== null && key.startsWith(prefix)) {
+              obj[key.substr(prefix.length)] = value.data
+            }
+          })
+
+          return obj
         }
       }
       subMaps.set(name, subMap)

src/index.test.js

@@ -622,6 +622,25 @@ describe('subdocs', () => {
     expect(subMap2.entries()).toEqual([['key3', 'data3']])
   })
 
+  test('subdoc toJSON()', () => {
+    const doc = CrdtMap()
+    const subMap1 = doc.getMap('sub1')
+    const subMap2 = doc.getMap('sub2')
+
+    doc.set('key1', 'data1')
+    subMap1.set('key2', 'data2')
+    subMap2.set('key3', 'data3')
+    subMap1.set('key2-2', 'data2-2')
+    subMap1.set('removed-key', 'data', 1000)
+    subMap1.delete('removed-key', 1001)
+
+    expect(subMap1.toJSON()).toEqual({
+      key2: 'data2',
+      'key2-2': 'data2-2'
+    })
+    expect(subMap2.toJSON()).toEqual({ key3: 'data3' })
+  })
+
   test('getting same subdoc multiple times should result in same subdoc object', () => {
     const doc = CrdtMap()
     const subMap1 = doc.getMap('sub1')