From 8aec3886a773413b877ce45c8128d97afaf53343 Mon Sep 17 00:00:00 2001
From: Dominik Moritz <domoritz@gmail.com>
Date: Fri, 3 Mar 2023 11:48:15 -0500
Subject: [PATCH] feat: reuse circular map

---
 factory/parser.ts                  | 6 +++++-
 src/CircularReferenceNodeParser.ts | 7 ++++---
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/factory/parser.ts b/factory/parser.ts
index 212820f6f..599b58dd3 100644
--- a/factory/parser.ts
+++ b/factory/parser.ts
@@ -58,6 +58,7 @@ import { UnknownTypeNodeParser } from "../src/NodeParser/UnknownTypeNodeParser";
 import { VoidTypeNodeParser } from "../src/NodeParser/VoidTypeNodeParser";
 import { SubNodeParser } from "../src/SubNodeParser";
 import { TopRefNodeParser } from "../src/TopRefNodeParser";
+import { BaseType } from "../src/Type/BaseType";
 
 export type ParserAugmentor = (parser: MutableParser) => void;
 
@@ -83,8 +84,11 @@ export function createParser(program: ts.Program, config: Config, augmentor?: Pa
             return nodeParser;
         }
     }
+
+    const circular: Map<string, BaseType> = new Map();
+
     function withCircular(nodeParser: SubNodeParser): SubNodeParser {
-        return new CircularReferenceNodeParser(nodeParser);
+        return new CircularReferenceNodeParser(nodeParser, circular);
     }
 
     if (augmentor) {
diff --git a/src/CircularReferenceNodeParser.ts b/src/CircularReferenceNodeParser.ts
index 28c033568..71be4154e 100644
--- a/src/CircularReferenceNodeParser.ts
+++ b/src/CircularReferenceNodeParser.ts
@@ -6,9 +6,10 @@ import { ReferenceType } from "./Type/ReferenceType";
 import { getKey } from "./Utils/nodeKey";
 
 export class CircularReferenceNodeParser implements SubNodeParser {
-    protected circular: Map<string, BaseType> = new Map();
-
-    public constructor(protected childNodeParser: SubNodeParser) {}
+    public constructor(
+        protected childNodeParser: SubNodeParser,
+        protected circular: Map<string, BaseType> = new Map()
+    ) {}
 
     public supportsNode(node: ts.Node): boolean {
         return this.childNodeParser.supportsNode(node);