PPT-MCP

'use strict'; var $TypeError = require('es-errors/type'); var isObject = require('es-object-atoms/isObject'); var Call = require('./Call'); var isIteratorRecord = require('../helpers/records/iterator-record'); // https://262.ecma-international.org/15.0/#sec-iteratornext module.exports = function IteratorNext(iteratorRecord) { if (!isIteratorRecord(iteratorRecord)) { throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1 } var result; if (arguments.length < 2) { // step 1 result = Call(iteratorRecord['[[NextMethod]]'], iteratorRecord['[[Iterator]]']); // step 1.a } else { // step 2 result = Call(iteratorRecord['[[NextMethod]]'], iteratorRecord['[[Iterator]]'], [arguments[1]]); // step 2.a } if (!isObject(result)) { throw new $TypeError('iterator next must return an object'); // step 3 } return result; // step 4 };