GetIterator.jsā¢755 B
'use strict';
var $TypeError = require('es-errors/type');
var getIteratorMethod = require('../helpers/getIteratorMethod');
var AdvanceStringIndex = require('./AdvanceStringIndex');
var Call = require('./Call');
var GetMethod = require('./GetMethod');
var isObject = require('es-object-atoms/isObject');
var ES = {
AdvanceStringIndex: AdvanceStringIndex,
GetMethod: GetMethod
};
// https://262.ecma-international.org/6.0/#sec-getiterator
module.exports = function GetIterator(obj, method) {
var actualMethod = method;
if (arguments.length < 2) {
actualMethod = getIteratorMethod(ES, obj);
}
var iterator = Call(actualMethod, obj);
if (!isObject(iterator)) {
throw new $TypeError('iterator must return an object');
}
return iterator;
};