From fe81a7dba929669bc1e28bac1fe226f331ad83eb Mon Sep 17 00:00:00 2001
From: Andrew Bastin <andrewbastin.k@gmail.com>
Date: Sat, 18 Jan 2020 04:14:10 -0500
Subject: [PATCH] Added debounce util function

---
 functions/utils/debounce.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 functions/utils/debounce.js

diff --git a/functions/utils/debounce.js b/functions/utils/debounce.js
new file mode 100644
index 000000000..09acda07d
--- /dev/null
+++ b/functions/utils/debounce.js
@@ -0,0 +1,15 @@
+// Debounce is a higher order function which makes its enclosed function be executed
+// only if the function wasn't called again till 'delay' time has passed, this helps reduce impact of heavy working
+// functions which might be called frequently
+// NOTE : Don't use lambda functions as this doesn't get bound properly in them, use the 'function (args) {}' format
+const debounce = (func, delay) => {
+  let inDebounce
+  return function() {
+    const context = this
+    const args = arguments
+    clearTimeout(inDebounce)
+    inDebounce = setTimeout(() => func.apply(context, args), delay)
+  }
+}
+
+export default debounce;