method used to determine knight moves on a chess board

knightMoves.js

function knightChecks(boardAndPiece, candidateMoves) {
    const newMoves = [];

    for (const m of candidateMoves.moves) {
        const p = boardAndPiece.board.pieceAt(m)
        if (!p) {
            newMoves.push(m)
        } else if (p.color !== boardAndPiece.piece.color) {
            m.hasCaptured = p;
            newMoves.push(m)
        }
    }
    return {
        moves: newMoves,
        moveVectors: [newMoves]
    };
}