+++ /dev/null
-'use strict';
-var path = require('../internals/path');
-var aFunction = require('../internals/a-function');
-var anObject = require('../internals/an-object');
-var create = require('../internals/object-create');
-var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
-var redefineAll = require('../internals/redefine-all');
-var wellKnownSymbol = require('../internals/well-known-symbol');
-var InternalStateModule = require('../internals/internal-state');
-var getBuiltIn = require('../internals/get-built-in');
-
-var Promise = getBuiltIn('Promise');
-
-var setInternalState = InternalStateModule.set;
-var getInternalState = InternalStateModule.get;
-
-var TO_STRING_TAG = wellKnownSymbol('toStringTag');
-
-var $return = function (value) {
- var iterator = getInternalState(this).iterator;
- var $$return = iterator['return'];
- return $$return === undefined
- ? Promise.resolve({ done: true, value: value })
- : anObject($$return.call(iterator, value));
-};
-
-var $throw = function (value) {
- var iterator = getInternalState(this).iterator;
- var $$throw = iterator['throw'];
- return $$throw === undefined
- ? Promise.reject(value)
- : $$throw.call(iterator, value);
-};
-
-module.exports = function (nextHandler, IS_ITERATOR) {
- var AsyncIteratorProxy = function AsyncIterator(state) {
- state.next = aFunction(state.iterator.next);
- state.done = false;
- setInternalState(this, state);
- };
-
- AsyncIteratorProxy.prototype = redefineAll(create(path.AsyncIterator.prototype), {
- next: function next(arg) {
- var state = getInternalState(this);
- if (state.done) return Promise.resolve({ done: true, value: undefined });
- try {
- return Promise.resolve(anObject(nextHandler.call(state, arg, Promise)));
- } catch (error) {
- return Promise.reject(error);
- }
- },
- 'return': $return,
- 'throw': $throw
- });
-
- if (!IS_ITERATOR) {
- createNonEnumerableProperty(AsyncIteratorProxy.prototype, TO_STRING_TAG, 'Generator');
- }
-
- return AsyncIteratorProxy;
-};