- return this.pieces(color, x, y)[piece || this.getPieceType(x, y)];
+ let pieceType = piece;
+ const allSpecs = this.pieces(color, x, y);
+ if (!piece)
+ pieceType = this.getPieceType(x, y);
+ else if (allSpecs[piece].moveas)
+ pieceType = allSpecs[piece].moveas;
+ return allSpecs[pieceType];