JavaScript minimalistic solution

Author: tshemsedinov

JavaScript/maybe5.js

@@ -0,0 +1,11 @@
+'use strict';
+
+function maybe(x) {
+  return fn => maybe((x && fn) ? fn(x) : null);
+}
+
+maybe(5)(x => ++x)(console.log);
+maybe(5)(x => x * 2)(x => ++x)(console.log);
+
+maybe(5)(null)(console.log);
+maybe(null)(x => x * 2)(console.log);