From f7cdba6935bf58b81a4d855e18bc45de8cad99b1 Mon Sep 17 00:00:00 2001
From: Matej Focko <mfocko@redhat.com>
Date: Fri, 12 May 2023 17:32:50 +0200
Subject: [PATCH] =?UTF-8?q?problems(js):=20add=20=E2=80=9C2629.=20Function?=
 =?UTF-8?q?=20Composition=E2=80=9D?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Matej Focko <mfocko@redhat.com>
---
 problems/function-composition.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 problems/function-composition.js

diff --git a/problems/function-composition.js b/problems/function-composition.js
new file mode 100644
index 0000000..67453e4
--- /dev/null
+++ b/problems/function-composition.js
@@ -0,0 +1,17 @@
+/**
+ * @param {Function[]} functions
+ * @return {Function}
+ */
+var compose = function(functions) {
+	return function(x) {
+        return functions.reduceRight(
+            (val, f) => f(val),
+            x,
+        );
+    };
+};
+
+/**
+ * const fn = compose([x => x + 1, x => 2 * x])
+ * fn(4) // 9
+ */