Check refmaps exist before adding them to mixin configs (#971)

FabricMC · Dec 15, 2023 · f2e8ff2 · f2e8ff2
1 parent 014a6fc
commit f2e8ff2
Showing 1 changed file with 9 additions and 7 deletions.
diff --git a/src/main/java/net/fabricmc/loom/task/RemapJarTask.java b/src/main/java/net/fabricmc/loom/task/RemapJarTask.java
@@ -345,13 +345,15 @@ private void addRefmaps() throws IOException {
 			}
 
 			for (RemapParams.RefmapData refmapData : getParameters().getMixinData().get()) {
-				int transformed = ZipUtils.transformJson(JsonObject.class, outputFile, refmapData.mixinConfigs().stream().collect(Collectors.toMap(s -> s, s -> json -> {
-					if (!json.has("refmap")) {
-						json.addProperty("refmap", refmapData.refmapName());
-					}
-
-					return json;
-				})));
+				if (ZipUtils.contains(outputFile, refmapData.refmapName())) {
+					int transformed = ZipUtils.transformJson(JsonObject.class, outputFile, refmapData.mixinConfigs().stream().collect(Collectors.toMap(s -> s, s -> json -> {
+						if (!json.has("refmap")) {
+							json.addProperty("refmap", refmapData.refmapName());
+						}
+
+						return json;
+					})));
+				}
 			}
 		}
 	}