From f337e22a645e85715cfe14ef9a9f4229369fe1e0 Mon Sep 17 00:00:00 2001
From: Henning Dieterichs <henning.dieterichs@hediet.de>
Date: Mon, 7 Jun 2021 01:07:35 +0200
Subject: [PATCH] Makes themes lazy so they can load on nodejs.

---
 visualization-core/src/Theme.ts | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/visualization-core/src/Theme.ts b/visualization-core/src/Theme.ts
index 42e7694..928a74b 100644
--- a/visualization-core/src/Theme.ts
+++ b/visualization-core/src/Theme.ts
@@ -1,6 +1,19 @@
 export class Theme {
-	public static readonly light = new Theme("light", "light");
-	public static readonly dark = new Theme("dark", "dark");
+	private static _light: Theme;
+	public static get light(): Theme {
+		if (!this._light) {
+			this._light = new Theme("light", "light");
+		}
+		return this._light;
+	}
+
+	private static _dark: Theme;
+	public static get dark(): Theme {
+		if (!this._dark) {
+			this._dark = new Theme("dark", "dark");
+		}
+		return this._dark;
+	}
 
 	private readonly divElement = document.createElement("div");