var toInteger = require('../internals/to-integer'); | |
var toLength = require('../internals/to-length'); | |
// `ToIndex` abstract operation | |
// https://tc39.github.io/ecma262/#sec-toindex | |
module.exports = function (it) { | |
if (it === undefined) return 0; | |
var number = toInteger(it); | |
var length = toLength(number); | |
if (number !== length) throw RangeError('Wrong length or index'); | |
return length; | |
}; |