From 03e4e948d6c4e0e8414472bd6475267d65660256 Mon Sep 17 00:00:00 2001
From: Angus MacDonald <amacdonald@google.com>
Date: Fri, 27 Nov 2020 11:16:48 -0600
Subject: [PATCH] Add arrayf.flatten function

---
 src/arrayf/arrayf.ts | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/arrayf/arrayf.ts b/src/arrayf/arrayf.ts
index c53ee4696a..5dbe5caeba 100644
--- a/src/arrayf/arrayf.ts
+++ b/src/arrayf/arrayf.ts
@@ -28,5 +28,13 @@ export class arrayf {
         return output;
     }
 
-
-}
\ No newline at end of file
+    /**
+     * Flattens a nested array.
+     * ```
+     * arrayf.flatten([[1,2],[3,4]]); // Returns [1,2,3,4]
+     * ```
+     */
+    static flatten<T>(values: T[][]): T[] {
+        return values.reduce((result, subArray) => result.concat(subArray), []);
+    }
+}