1// https://tc39.github.io/ecma262/#sec-toindex
2var toInteger = require('./_to-integer');
3var toLength = require('./_to-length');
4module.exports = function (it) {
5  if (it === undefined) return 0;
6  var number = toInteger(it);
7  var length = toLength(number);
8  if (number !== length) throw RangeError('Wrong length!');
9  return length;
10};
11