Add abstract wrap with before and after callbacks

Author: tshemsedinov

JavaScript/2-before-after.js

@@ -0,0 +1,25 @@
+'use strict';
+
+const wrap = (before, after, fn) => (
+  (...args) => after(fn(...before(...args)))
+);
+
+// Usage
+
+const func = (par1, par2) => {
+  console.dir({ method: { par1, par2 } });
+  return [par1, par2];
+};
+
+const before = (...args) => {
+  console.log('before');
+  return args;
+};
+
+const after = (...args) => {
+  console.log('after');
+  return args;
+};
+
+const cloned = wrap(before, after, func);
+cloned('Uno', 'Due');