function contains(list, elem) {
    return list.indexOf(elem) !== -1;
}

module.exports = {
    contains: contains
}

@@ -2,17 +2,21 @@
 unction 
-c
+fastC
 ontains(
@@ -70,16 +70,261 @@
  -1;%0A%7D%0A%0A
+function slowContains(list, elem) %7B%0A    for (var i = 0; i %3C list.length; i++) %7B%0A        if (list%5Bi%5D === elem) %7B%0A            return true;%0A        %7D%0A    %7D%0A    return false;%0A%7D%0A%0Avar contains = Array.prototype.indexOf ? fastContains : slowContains;%0A%0A
 module.e

Make contains() actually work in IE8