viz primitives for data structures

frontend/src/components/visualization/index.ts

@@ -8,4 +8,11 @@ export { StepDescription } from "./step-description";
 export { VariablesPane } from "./variables-pane";
 export { StructureRenderer } from "./structure-renderer";
 export { PatternVisualization } from "./pattern-visualization";
-export { ArrayVisualizer } from "./visualizers";
+export { CodePane } from "./code-pane";
+export {
+  ArrayVisualizer,
+  HistogramVisualizer,
+  LinkedListVisualizer,
+  StackVisualizer,
+  TreeVisualizer,
+} from "./visualizers";