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- '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
- };
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