PPT-MCP

'use strict'; var $TypeError = require('es-errors/type'); var IteratorComplete = require('./IteratorComplete'); var IteratorNext = require('./IteratorNext'); var isIteratorRecord = require('../helpers/records/iterator-record'); // https://262.ecma-international.org/16.0/#sec-iteratorstep module.exports = function IteratorStep(iteratorRecord) { if (!isIteratorRecord(iteratorRecord)) { throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1 } var result = IteratorNext(iteratorRecord); // step 1 try { var done = IteratorComplete(result); // step 2 } catch (e) { // step 3 // eslint-disable-next-line no-param-reassign iteratorRecord['[[Done]]'] = true; // step 3.a throw e; // step 3.b } if (done) { // step 5 // eslint-disable-next-line no-param-reassign iteratorRecord['[[Done]]'] = true; // step 5.a return false; // step 5.b. should be `~done~` but `false` is more convenient here. } return result; // steps 6 };