Merge branch 'master' of github.com:HowProgrammingWorks/Wrapper

Author: tshemsedinov

JavaScript/3-callback.js

@@ -4,7 +4,7 @@
 
 // const wrapAsync = (before, after, beforeCb, afterCb, f) =>
 //   (...args) => {
-//     const callback = arrs[arrs.length -1];
+//     const callback = args[args.length - 1];
 //     if (typeof callback === 'function') {
 //       args[args.length - 1] = (...pars) =>
 //         afterCb(callback(...beforeCb(...pars)));

README.md

@@ -1,4 +1,5 @@
-# Wrapper
-Wrapper functions, Interface wrappers, etc.
+# Wrapper functions, Interface wrappers, etc.
+
+[![Примеси, обертки, декораторы, мемоизация ](https://img.youtube.com/vi/oRQ0kQr1N-U/0.jpg)](https://www.youtube.com/watch?v=oRQ0kQr1N-U)
 
 Task: rewrite wrapper function to have custom callbacks: `beforeCall, afterCall, beforeCallback, afterCallback` passed as parameters. Or implement wrapper using prototypes and/or classes.