From 01272386451cbd193bf9d2153b8d014078cec431 Mon Sep 17 00:00:00 2001
From: Tim Maffett <timmaffett@gmail.com>
Date: Fri, 29 Apr 2022 17:46:19 -0700
Subject: [PATCH] protect config.js from attempting to use invalid theme name

---
 src/config.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/config.js b/src/config.js
index a9fca15e8..7ae58cc32 100644
--- a/src/config.js
+++ b/src/config.js
@@ -27,7 +27,7 @@ export const updateCurrentConfig = (siteCfg, _directives) => {
 
   cfg = assignWithDepth(cfg, sumOfDirectives);
 
-  if (sumOfDirectives.theme) {
+  if (sumOfDirectives.theme && theme[sumOfDirectives.theme]) {
     const tmpConfigFromInitialize = assignWithDepth({}, configFromInitialize);
     const themeVariables = assignWithDepth(
       tmpConfigFromInitialize.themeVariables || {},
@@ -59,7 +59,7 @@ export const setSiteConfig = (conf) => {
   siteConfig = assignWithDepth({}, defaultConfig);
   siteConfig = assignWithDepth(siteConfig, conf);
 
-  if (conf.theme) {
+  if (conf.theme && theme[conf.theme]) {
     siteConfig.themeVariables = theme[conf.theme].getThemeVariables(conf.themeVariables);
   }