Game walk by path in array

let coord = { x: 0, y: 0 };

let myTimeout;

let goByPath = (path = [], coord = {}) => {
  let i = 0;
  clearTimeout(myTimeout); // stop previous calls
  pathIteration(i, path, coord);
}

let pathIteration = (i, path, coord) => {
  rect(coord);
  if (i++ < path.length) {
    myTimeout = setTimeout(() => { // store reference to timeout
      coord = path[i - 1];
      pathIteration(i, path, coord);
    }, 500);
  }
  return i;
};

/* canvas grid for display purposes */

var canvas = document.querySelector('canvas');
var ctx = canvas.getContext('2d');
var n = 10;
var size = Math.min(innerWidth, innerHeight);
var u = size / n;

var draw = function() {
  size = Math.min(innerWidth, innerHeight);
  u = size / n;
  canvas.width = size;
  canvas.height = size;

  for (var y = 0; y < n; y++) {
    for (var x = 0; x < n; x++) {
      ctx.strokeStyle = '#000';
      ctx.strokeRect(x * u, y * u, u, u);
    }
  }
};
draw();
var rect = (coord) => {
  ctx.fillStyle = '#888';
  ctx.fillRect(coord.x * u, coord.y * u, u, u);
};

/* example */

var path1 = [{x:0,y:1},{x:1,y:1},{x:1,y:2},{x:2,y:2}];
goByPath(path1, coord);


var path2 = [{x:1,y:3},{x:1,y:4},{x:1,y:5}];
setTimeout(() => { goByPath(path2, coord); }, 1600);

body {
  margin: 0;
  display: grid;
  place-content: center;
}

<canvas></canvas>