- let shift = (color == "w" ? -1 : 1);
- let startRank = (color == "w" ? sizeY-2 : 1);
- let lastRank = (color == "w" ? 0 : sizeY-1);
+ const shift = (color == "w" ? -1 : 1);
+ const firstRank = (color == 'w' ? sizeY-1 : 0);
+ const startRank = (color == "w" ? sizeY-2 : 1);
+ const lastRank = (color == "w" ? 0 : sizeY-1);