From 21a002ad63b2a54d30244bd1b26d246c4472c654 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Samy=20Pess=C3=A9?= <samypesse@gmail.com>
Date: Thu, 28 Jul 2016 20:13:45 +0200
Subject: [PATCH] Only create data once in setBlockAtRange and prevent its
 deletion (#196)

---
 lib/models/transforms.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/models/transforms.js b/lib/models/transforms.js
index 8daa3458a..d0d9543ee 100644
--- a/lib/models/transforms.js
+++ b/lib/models/transforms.js
@@ -527,11 +527,15 @@ const Transforms = {
     if (typeof properties == 'string') {
       properties = { type: properties }
     }
+    if (properties.data) {
+        properties.data = Data.create(properties.data)
+    } else {
+        delete properties.data
+    }
 
     // Update each of the blocks.
     const blocks = node.getBlocksAtRange(range)
     blocks.forEach((block) => {
-      if (properties.data) properties.data = Data.create(properties.data)
       block = block.merge(properties)
       node = node.updateDescendant(block)
     })