[squeaky-clean]

The blue squares show the nodes it checked, and with A star the entire map shouldn't be blue on an empty maze.

[eknkc]

Yeah _0ffh's point makes sense on the path found. But even if it finds a path that is basically one horizontal one vertical line, it should still check the immediate neighbors only.

[_0ffh]

Yeah right, in that case there's something wrong there! Maybe in the way it queues up the options.

[squeaky-clean]

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;
    });