Merge pull request neetcode-gh#3737 from dmgodoy/feat/sleep-js

Create 2621-sleep.js

Author: Ykhan799

javascript/2621-sleep.js

@@ -0,0 +1,12 @@
+/**
+ * @param {number} millis
+ * @return {Promise}
+ */
+async function sleep(millis) {
+    return new Promise(resolve => setTimeout(() => resolve("Completed!"), millis));
+}
+
+/** 
+ * let t = Date.now()
+ * sleep(100).then(() => console.log(Date.now() - t)) // 100
+ */