source: imaps-frontend/node_modules/es-abstract/2019/AsyncFromSyncIteratorContinuation.js@ 79a0317

'use strict';

var GetIntrinsic = require('get-intrinsic');

var $SyntaxError = require('es-errors/syntax');
var $TypeError = require('es-errors/type');
var $Promise = GetIntrinsic('%Promise%', true);

var callBound = require('call-bound');

var CreateIterResultObject = require('./CreateIterResultObject');
var IteratorComplete = require('./IteratorComplete');
var IteratorValue = require('./IteratorValue');
var PromiseResolve = require('./PromiseResolve');

var isObject = require('../helpers/isObject');

var $then = callBound('Promise.prototype.then', true);

// https://262.ecma-international.org/10.0/#sec-asyncfromsynciteratorcontinuation

module.exports = function AsyncFromSyncIteratorContinuation(result) {
        if (!isObject(result)) {
                throw new $TypeError('Assertion failed: Type(O) is not Object');
        }

        if (arguments.length > 1) {
                throw new $SyntaxError('although AsyncFromSyncIteratorContinuation should take a second argument, it is not used in this implementation');
        }

        if (!$Promise) {
                throw new $SyntaxError('This environment does not support Promises.');
        }

        return new $Promise(function (resolve) {
                var done = IteratorComplete(result); // step 2
                var value = IteratorValue(result); // step 4
                var valueWrapper = PromiseResolve($Promise, value); // step 6

                // eslint-disable-next-line no-shadow
                var onFulfilled = function (value) { // steps 8-9
                        return CreateIterResultObject(value, done); // step 8.a
                };
                resolve($then(valueWrapper, onFulfilled)); // step 11
        }); // step 12
};