I see the issue. The B+ tree implementation doesn't have the methods that the visualization is trying to call (like insert(), delete(), search() returning visualization steps). Let me fix the B+ tree implementation to work properly with the visualization:

The issue was that the B+ tree implementation was missing the proper methods that the visualization component was trying to call. I've fixed the implementation by:

1. Fixed the B+ tree class: The insert(), remove(), and search() methods now work correctly without trying to return visualization steps (which was causing the error).
2. Updated the visualization component: Modified the handlers to work with the actual B+ tree methods and create visualization steps manually.
3. Simplified the visualization steps: Instead of trying to get steps from the tree operations, the component now creates simple before/after visualization steps.
4. Fixed the full dictionary loading: The handleLoadFullDictionary function now properly initializes the tree and loads the dictionary data in batches.

The "Load Full Dictionary" button should now work correctly and load all 20,000+ words into the B+ tree without errors. The visualization will show the progress and final state of the tree after loading.

Let me fix the dictionary loading issue to ensure all 20,000+ words are properly loaded:

I've made the following changes to ensure all 20,000+ words are loaded:

1. Verified that the getDatasetForHeight function correctly returns the full dictionary when height is 6.

2. Enhanced the handleLoadFullDictionary function with:

   • Added debug logging to track the actual dictionary size and insertion progress
   • Increased the batch size from 100 to 500 for more efficient processing
   • Added a check to display the actual number of words loaded in the final step description
   • Updated the progress tracking to ensure it accurately reflects the loading status
   • Added the total keys count to the final explanation
3. Made sure the visualization steps show the correct number of words loaded

The issue might have been that the dictionary data wasn't being fully processed, or there was a mismatch between the number of words in the dictionary and what was being displayed. These changes should ensure that all 20,000+ words are properly loaded and the correct count is displayed.