Find matrix point neighbors

getNeighboors.js

const getNeighboors = (matrix, row,col) => {

    let isTopBorder = row === 0;
    let isRightBorder = col === matrix[row].length - 1;
    let isBottomBorder = row === matrix.length - 1;
    let isLeftBorder = col === 0;

    let top = isTopBorder ? row : row - 1;
    let left = isLeftBorder ? col : col - 1;
    let bottom = isBottomBorder ? row : row + 1;
    let right = isRightBorder ? col : col + 1;

    const neighboors = [];

    for(let r = top; r <= bottom; r++) {
        for(let c = left; c <= right; c++){            
            if(!(row === r && col === c)) {
                neighboors.push(matrix[r][c]);
            }
        }
    }
    console.log(neighboors);
}

const matrixTest = [
    [1,2,3,4,5,6],
    [4,5,6,7,8,9],
    [7,8,9,3,4,2],
];

getNeighboors(matrixTest, 0, 5)