Function toIndex

lib/web/polyfill.js:310–313

(index, length)

  return it > 0 ? min(toInteger(it), MAX_SAFE_INTEGER) : 0;
}
function toIndex(index, length){
  var index = toInteger(index);
  return index < 0 ? max(index + length, 0) : min(index, length);
}
function lz(num){
  return num > 9 ? num : '0' + num;
}