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-rw-r--r--utils/comb.js3
1 files changed, 3 insertions, 0 deletions
diff --git a/utils/comb.js b/utils/comb.js
index f607790..dee97c1 100644
--- a/utils/comb.js
+++ b/utils/comb.js
@@ -10,3 +10,6 @@ function sub(char1, char2){
if (char1 == char2) return '';
else return char1;
}
+
+exports.add = add;
+exports.sub = sub;