fix(fold): Occasional NPE in LSP4IntellIJ

CHANGELOG.md

@@ -7,7 +7,10 @@
 ### Fixed
 
 #### Highlighting
-Last token in file not getting highlighted
+- Last token in file not getting highlighted
+
+#### Folding
+- Occasional NPE in LSP4IntellIJ
 
 ## [0.2.0]
 

src/main/java/com/falsepattern/zigbrains/lsp/ZLSRequestManager.java

@@ -93,4 +93,10 @@ public class ZLSRequestManager extends DefaultRequestManager {
         LOG.warn(e);
         getWrapper().crashed(e);
     }
+
+    @Override
+    public CompletableFuture<List<FoldingRange>> foldingRange(FoldingRangeRequestParams params) {
+        var future = super.foldingRange(params);
+        return future == null ? null : future.thenApply((range) -> range == null ? Collections.emptyList() : range);
+    }
 }