readline: simplify condition, accept any falsy value for undefined

nodejs · May 24, 2015 · 0b61cd5 · 0b61cd5
1 parent 48b5e5d
commit 0b61cd5
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/lib/readline.js b/lib/readline.js
@@ -47,9 +47,7 @@ function Interface(input, output, completer, terminal) {
   }
   historySize = historySize || kHistorySize;
 
-  completer = completer || undefined;
-
-  if (typeof completer !== 'function' && typeof completer !== 'undefined') {
+  if (completer && typeof completer !== 'function') {
     throw new TypeError('Argument \'completer\' must be a function');
   }