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commit 3875af87636dd3e3a9e4e16ca132f1157e97b50e
parent 1f90b365180d74bf30d49815f2b78b01b81522c6
Author: John Resig <jeresig@gmail.com>
Date:   Thu, 30 Apr 2015 12:51:43 -0400

buildHTML's buildExpression is destructive, changing the tree object, this clones the object first before manipulating it.

Diffstat:
M
src/buildHTML.js
 | 
4
++++

1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/src/buildHTML.js b/src/buildHTML.js
@@ -1157,6 +1157,10 @@ var buildGroup = function(group, options, prev) {
  * nodes.
  */
 var buildHTML = function(tree, settings) {
+    // buildExpression is destructive, so we need to make a clone
+    // of the incoming tree so that it isn't accidentally changed
+    tree = JSON.parse(JSON.stringify(tree));
+
     var startStyle = Style.TEXT;
     if (settings.displayMode) {
         startStyle = Style.DISPLAY;