vendor tsgo

tools/tsgo/internal/project/dirty/util.go

@@ -0,0 +1,18 @@
+package dirty
+
+import "maps"
+
+func CloneMapIfNil[K comparable, V any, T any](dirty *T, original *T, getMap func(*T) map[K]V) map[K]V {
+	dirtyMap := getMap(dirty)
+	if dirtyMap == nil {
+		if original == nil {
+			return make(map[K]V)
+		}
+		originalMap := getMap(original)
+		if originalMap == nil {
+			return make(map[K]V)
+		}
+		return maps.Clone(originalMap)
+	}
+	return dirtyMap
+}