From 345eaade221fb15b0777ff07f74219d06ce61d41 Mon Sep 17 00:00:00 2001
From: "Ashley Engelund (weedySeaDragon @ github)" <ashley.engelund@gmail.com>
Date: Mon, 14 Nov 2022 11:39:58 -0800
Subject: [PATCH] stateDB classes must be a {} not []

---
 packages/mermaid/src/diagrams/state/stateDb.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/mermaid/src/diagrams/state/stateDb.js b/packages/mermaid/src/diagrams/state/stateDb.js
index d0877847c..914ac7410 100644
--- a/packages/mermaid/src/diagrams/state/stateDb.js
+++ b/packages/mermaid/src/diagrams/state/stateDb.js
@@ -31,9 +31,15 @@ const FILL_KEYWORD = 'fill';
 const BG_FILL = 'bgFill';
 const STYLECLASS_SEP = ',';
 
+// Returns a new list of classes.
+// In the future, this can be replaced with a class common to all diagrams.
+function newClassesList() {
+  return {};
+}
+
 let direction = DEFAULT_DIAGRAM_DIRECTION;
 let rootDoc = [];
-let classes = []; // style classes defined by a classDef
+let classes = newClassesList(); // style classes defined by a classDef
 
 const newDoc = () => {
   return {
@@ -274,7 +280,7 @@ export const clear = function (saveCommon) {
 
   // number of start and end nodes; used to construct ids
   startEndCount = 0;
-  classes = [];
+  classes = newClassesList();
   if (!saveCommon) {
     commonClear();
   }