From a3a064b4a5454a77208c13003bed3b495021c7be Mon Sep 17 00:00:00 2001
From: "andy.patterson" <andy.patterson@genesys.com>
Date: Sat, 2 Jun 2018 18:09:18 -0400
Subject: [PATCH] perf: create single shared none instance

Because all nones are equivalent, we can share a single instance. This
should save a decent amount of memory and cpu cycles from not building
the `None` class constantly.
---
 src/none.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/none.ts b/src/none.ts
index f648f51..83c6b60 100644
--- a/src/none.ts
+++ b/src/none.ts
@@ -51,4 +51,5 @@ export default class None<T> extends Maybe<T> {
     asNullable(): T | null { return null; }
 }
 
-export const none: <T>() => Maybe<T> = None.none;
+const _noneSingleton = None.none<any>();
+export const none = <T>(): Maybe<T> => _noneSingleton;