kast: fix undefinedness error

dapphub · Jan 30, 2019 · 4d8e719 · 4d8e719
1 parent b24eab9
commit 4d8e719
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/kast.js b/lib/kast.js
@@ -256,12 +256,14 @@ const format = (o, isRaw = false) => {
 }
 
 const prettify = str => {
+  if (str) {
     str = str.replace(/ \.IntList/g, "");
     str = str.replace(/ _\-Int__INT /g, " - ");
     str = str.replace(/ _\+Int__INT /g, " + ");
     str = str.replace(/ _\/Int__INT /g, " / ");
     str = str.replace(/ _\*Int__INT /g, " * ");
-    return str;
+  }
+  return str;
 }
 
 const get = (term, path) => {