added comb.mask

1 files changed, 5 insertions, 0 deletions

diff --git a/utils/comb.js b/utils/comb.js
index 9ffcb86..607343a 100644
--- a/utils/comb.js
+++ b/utils/comb.js
@@ -10,3 +10,8 @@ exports.sub = function(char1, char2){
   if (char1 == char2) return '';
   else return char1;
 }
+
+exports.mask = function(char1, char2){ // Meant for hiding text (if char1 is valid, mask char2 with null character)
+  if (char1 == '') return char2;
+  else return '';
+}