function that returns if two coordinates are adjacent in javascript

areAdjacent.js

function areAdjacent(coord1, coord2) {
  const [x1, y1] = coord1;
  const [x2, y2] = coord2;
  
  const isHorizontallyAdjacent = Math.abs(x1 - x2) === 1 && y1 === y2;
  const isVerticallyAdjacent = x1 === x2 && Math.abs(y1 - y2) === 1;
  const isDiagonallyAdjacent =
    Math.abs(x1 - x2) === 1 && Math.abs(y1 - y2) === 1;
  
  return isHorizontallyAdjacent || isVerticallyAdjacent || isDiagonallyAdjacent;
}