Fixed #826: editor not allowing indentation `0`

HISTORY.md

@@ -7,6 +7,7 @@ https://github.com/josdejong/jsoneditor
 
 - Fixed #828: do not expand/collapse when clicking the text of a node in modes
   `view` or `form`.
+- Fixed #826: editor not allowing indentation `0`.
 
 
 ## 2019-10-23, version 7.2.0

src/js/previewmode.js

@@ -47,7 +47,7 @@ previewmode.create = function (container, options = {}) {
   this.options = options
 
   // indentation
-  if (options.indentation) {
+  if (typeof options.indentation === 'number') {
     this.indentation = Number(options.indentation)
   } else {
     this.indentation = 2 // number of spaces

src/js/textmode.js

@@ -49,7 +49,7 @@ textmode.create = function (container, options = {}) {
   this.options = options
 
   // indentation
-  if (options.indentation) {
+  if (typeof options.indentation === 'number') {
     this.indentation = Number(options.indentation)
   } else {
     this.indentation = 2 // number of spaces