Think I found it, if you change the sort in astar.ts to just return 1 or -1 based on the comparison it behaves like A-star.

   untraversedTiles.sort((a, b) => {
      if (heuristicCost[a.row][a.col] < heuristicCost[b.row][b.col]) {
        return-1;
       }
      return 1;
    });