| 'use strict'; |
| |
| var $TypeError = require('es-errors/type'); |
| |
| var IteratorStep = require('./IteratorStep'); |
| var IteratorValue = require('./IteratorValue'); |
| |
| var isIteratorRecord = require('../helpers/records/iterator-record'); |
| |
| // https://262.ecma-international.org/16.0/#sec-iteratorstepvalue |
| |
| module.exports = function IteratorStepValue(iteratorRecord) { |
| if (!isIteratorRecord(iteratorRecord)) { |
| throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); |
| } |
| |
| var result = IteratorStep(iteratorRecord); // step 1 |
| if (!result || result === 'DONE') { // step 2 |
| return result; // step 2.a |
| } |
| |
| var value; |
| try { |
| value = IteratorValue(result); // step 3 |
| } catch (e) { // step 4 |
| // eslint-disable-next-line no-param-reassign |
| iteratorRecord['[[Done]]'] = true; // step 4.a |
| throw e; // step 5 |
| } |
| |
| return value; // step 5 |
| }; |