source: imaps-frontend/node_modules/es-abstract/2024/IteratorStepValue.js@ d565449

'use strict';

var $TypeError = require('es-errors/type');

var Get = require('./Get');
var IteratorComplete = require('./IteratorComplete');
var IteratorNext = require('./IteratorNext');

var isIteratorRecord = require('../helpers/records/iterator-record');

// https://262.ecma-international.org/15.0/#sec-iteratorstepvalue

module.exports = function IteratorStepValue(iteratorRecord) {
        if (!isIteratorRecord(iteratorRecord)) {
                throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record');
        }
        /* eslint no-param-reassign: 0 */

        var result;
        try {
                result = IteratorNext(iteratorRecord); // step 1
        } catch (e) { // step 2
                iteratorRecord['[[Done]]'] = true; // step 2.a
                throw e; // step 2.b
        }

        var done;
        try {
                done = IteratorComplete(result); // step 4
        } catch (e) { // step 5
                iteratorRecord['[[Done]]'] = true; // step 5.a
                throw e; // step 5.b
        }

        if (done) { // step 7
                iteratorRecord['[[Done]]'] = true; // step 7.a
                return 'DONE'; // step 7.b
        }

        var value;
        try {
                value = Get(result, 'value'); // step 8
        } catch (e) { // step 9
                iteratorRecord['[[Done]]'] = true; // step 9.a
                throw e; // step 10
        }

        return value; // step 10
};