From 5b4dcd0dbf47b42144c8afa6149129280d9013cb Mon Sep 17 00:00:00 2001
From: Tony Brix <tony@brix.ninja>
Date: Fri, 11 Aug 2023 21:50:38 -0600
Subject: [PATCH] use nullish coalescing

Co-authored-by: Steven <steven@ceriously.com>
---
 src/Instance.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Instance.ts b/src/Instance.ts
index 6ff7be0af8..48d81810bf 100644
--- a/src/Instance.ts
+++ b/src/Instance.ts
@@ -64,8 +64,9 @@ export class Marked {
         }
         default: {
           const genericToken = token as Tokens.Generic;
-          if (this.defaults.extensions && this.defaults.extensions.childTokens && this.defaults.extensions.childTokens[genericToken.type]) { // Walk any extensions
-            this.defaults.extensions.childTokens[genericToken.type].forEach((childTokens) => {
+          const array = this.defaults.extensions?.childTokens?.[genericToken.type] ?? []
+          // Walk any extensions
+          array.forEach((childTokens) => {
               values = values.concat(this.walkTokens(genericToken[childTokens], callback));
             });
           } else if (genericToken.tokens) {