From b506a6280aaef34d6eb6464602a67669efdd041c Mon Sep 17 00:00:00 2001
From: marcus8448 <marcus8448_devtools@outlook.com>
Date: Fri, 10 Mar 2023 19:30:18 +0000
Subject: [PATCH] fix: remapping of jars without a fabric.mod.json (#840)

* fix: remapping of jars without a fabric.mod.json
(jars that have `Fabric-Loom-Remap: true`)

* fix: checkstyle
---
 .../fabricmc/loom/configuration/mods/AccessWidenerUtils.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java b/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java
index 915404c1..725e4fb1 100644
--- a/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java
+++ b/src/main/java/net/fabricmc/loom/configuration/mods/AccessWidenerUtils.java
@@ -57,6 +57,10 @@ public class AccessWidenerUtils {
 	}
 
 	public static AccessWidenerData readAccessWidenerData(Path inputJar) throws IOException {
+		if (!FabricModJsonFactory.isModJar(inputJar)) {
+			return null;
+		}
+
 		final FabricModJson fabricModJson = FabricModJsonFactory.createFromZip(inputJar);
 		final List<String> classTweakers = List.copyOf(fabricModJson.getClassTweakers().keySet());