From 9eb4e9f9f79eedc0c8f7322c6ef9d48c7c6ba689 Mon Sep 17 00:00:00 2001
From: Grzegorz Kucmierz <gkucmierz@gmail.com>
Date: Wed, 29 Jan 2020 09:23:55 +0100
Subject: [PATCH] String insert values

---
 string-insert-values/index.js | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 string-insert-values/index.js

diff --git a/string-insert-values/index.js b/string-insert-values/index.js
new file mode 100644
index 0000000..a1e71b2
--- /dev/null
+++ b/string-insert-values/index.js
@@ -0,0 +1,6 @@
+// https://www.codewars.com/kata/529b54d9aba78c924d00088e/javascript
+
+const format = function (str, obj) {
+  const truthy = (val, def) => typeof val === 'undefined' ? def : val;
+  return str.replace(/\{\w+\}/g, a => truthy(obj[a.slice(1, a.length-1)], a));
+};