Clamping a value between a given min and max i.e. never more than the max and never less than min

clamp.js

const clamp = (val, min = 0, max = 1) => {
  // if provided min is somehow greater than max, exchange the values
  if (min > max) {
    [min, max] = [max, min];
  }
  
  // get the maximum of two minimized values
  return Math.max(min, Math.min(max, val));
}