Refactor the add function to make it pure

The task is to clean up the add function by removing everything that violates the principles of a pure function.

let x = 2;

const add = async (params, y) => {
  params.value = y;
  y += y + Math.random(params.value);
  x += y;

  console.log('doubling', x);

  const { data } = await axios({ method: 'get', url: '/' });

  const elem = document.getElementById('elem');
  const width = elem.getBoundingClientRect().width;

  return x + data + width;
};

add({ value: 4 }, 1);