changes put to return key and value passed

index.js

@@ -761,6 +761,9 @@ class Batch {
   }
 
   _append (root, seq, key, value) {
+    const ret = { seq, key: null, value: null }
+    if (key) ret.key = (this.keyEncoding) ? this.keyEncoding.decode(key) : key
+    if (value) ret.value = (this.valueEncoding) ? this.valueEncoding.decode(value) : value
     const index = []
     root.indexChanges(index, seq)
     index[0] = new Child(seq, 0, root)
@@ -771,14 +774,14 @@ class Batch {
       this.root = root
       this.length++
       this.blocks.set(seq, block)
-      return
+      return ret
     }
 
     return this._appendBatch(Node.encode({
       key,
       value,
       index: deflate(index)
-    }))
+    })).then(() => ret)
   }
 
   async _appendBatch (raw) {

test/all.js

@@ -407,3 +407,29 @@ tape('feed is unwrapped in getter', async t => {
   t.same(feed, db.feed)
   t.end()
 })
+
+tape('put returns key & value', async t => {
+
+  const db0 = create({ keyEncoding: 'utf8', valueEncoding: 'json' })
+  const k0 = 'key'
+  const v0 = { value: 'value' }
+  const res0 = await db0.put(k0, v0)
+  t.equals(res0.key, k0)
+  t.deepEquals(res0.value, v0)
+
+  const db1 = create({ keyEncoding: 'utf8', valueEncoding: 'utf8' })
+  const k1 = 'key'
+  const v1 = 'value'
+  const res1 = await db1.put(k1, v1)
+  t.equals(res1.key, k1)
+  t.equals(res1.value, v1)
+
+  const db2 = create({ keyEncoding: 'binary', valueEncoding: 'binary' })
+  const k2 = Buffer.from('key')
+  const v2 = Buffer.from('value')
+  const res2 = await db2.put(k2, v2)
+  t.equals(Buffer.compare(res2.key, k2), 0)
+  t.equals(Buffer.compare(res2.value, v2), 0)
+
+  t.end()
+})