// Takes a list of coordinate pairs (like the keys from a fetch block) and returns a dimension

function dims(coords){
  ext = [[Infinity, Infinity], [-Infinity, -Infinity]]
  for (let i=0; i<coords.length; i++){
    let coord = coords[i];
    if (coord[0] < ext[0][0]) ext[0][0] = coord[0];
    if (coord[1] < ext[0][1]) ext[0][1] = coord[1];
    if (coord[0] > ext[1][0]) ext[1][0] = coord[0];
    if (coord[1] > ext[1][1]) ext[1][1] = coord[1];
  }
  return ext;
}

module.exports = dims