import { window } from 'ssr-window';

function unique(arr) {
  const uniqueArray = [];
  for (let i = 0; i < arr.length; i += 1) {
    if (uniqueArray.indexOf(arr[i]) === -1) uniqueArray.push(arr[i]);
  }
  return uniqueArray;
}
function toCamelCase(string) {
  return string.toLowerCase().replace(/-(.)/g, (match, group1) => group1.toUpperCase());
}

function requestAnimationFrame(callback) {
  if (window.requestAnimationFrame) return window.requestAnimationFrame(callback);
  else if (window.webkitRequestAnimationFrame) return window.webkitRequestAnimationFrame(callback);
  return window.setTimeout(callback, 1000 / 60);
}
function cancelAnimationFrame(id) {
  if (window.cancelAnimationFrame) return window.cancelAnimationFrame(id);
  else if (window.webkitCancelAnimationFrame) return window.webkitCancelAnimationFrame(id);
  return window.clearTimeout(id);
}

export {
  unique,
  toCamelCase,
  requestAnimationFrame,
  cancelAnimationFrame,
};