From 52dd1146b59f17d6cc56ae90c58e5c0660e08806 Mon Sep 17 00:00:00 2001
From: DmitryScaletta <DmitryScaletta@users.noreply.github.com>
Date: Sun, 12 Nov 2023 16:21:52 +0300
Subject: [PATCH] Don't load submodules with not installed optional
 dependencies

See: https://github.com/metarhia/impress/issues/1937
---
 lib/deps.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/deps.js b/lib/deps.js
index 81fa996a..1cccbef4 100644
--- a/lib/deps.js
+++ b/lib/deps.js
@@ -54,8 +54,16 @@ const loadModule = (name) => {
   const subKeys = Object.keys(pkg.exports).map((key) => key.substring(2));
   const subNames = subKeys.filter(validSubmodules);
   for (const subName of subNames) {
-    const sub = appRequire(name + '/' + subName);
-    lib[subName] = sub;
+    try {
+      const sub = appRequire(name + '/' + subName);
+      lib[subName] = sub;
+    } catch (e) {
+      if (e.message.startsWith("Cannot find module '")) {
+        const moduleName = e.message.substring(20, e.message.indexOf("'\n"));
+        const optional = pkg.peerDependenciesMeta?.[moduleName].optional;
+        if (optional) continue; else throw e;
+      }
+    }
   }
   return lib;
 };