Add delay

snippets/delay.md

@@ -0,0 +1,16 @@
+### defer
+
+Invokes the provided function after `wait` milliseconds.
+
+Use `setTimeout()` to delay execution of `fn`.
+Use the spread (`...`) operator to supply the function with an arbitrary number of arguments.
+
+```js
+const delay = (fn, wait, ...args) => setTimeout(fn, wait, ...args);
+```
+
+```js
+delay(function(text) {
+  console.log(text);
+}, 1000, 'later'); // Logs 'later' after one second.
+```