Sanitize strings

Calling String on an object with a toString property would throw an error

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/util.js b/lib/util.js
index 731cc82..c5584ee 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -93,6 +93,16 @@ u.toLinkArray = function (x) {
   return u.toArray(x).map(u.toLink).filter(u.linkDest)
 }
 
+u.toString = function (str) {
+  switch (typeof str) {
+    case 'string': return str
+    case 'object':
+      if (str !== null) return JSON.stringify(str)
+    default:
+      return String(str)
+  }
+}
+
 u.renderError = function(err) {
   return h('div.error',
     h('h3', err.name),