fixes #188: drop changes to %AsyncFromSyncIteratorPrototype% (#193)

spec.html

@@ -1032,72 +1032,5 @@ <h1>AsyncIterator.prototype [ @@toStringTag ]</h1>
         <p>This property has the attributes { [[Writable]]: *false*, [[Enumerable]]: *false*, [[Configurable]]: *true* }.</p>
       </emu-clause>
     </emu-clause>
-
-    <emu-clause id="sec-%asyncfromsynciteratorprototype%-object">
-      <h1>The %AsyncFromSyncIteratorPrototype% Object</h1>
-
-      <emu-clause id="sec-%asyncfromsynciteratorprototype%.next">
-        <h1>%AsyncFromSyncIteratorPrototype%.next ( _value_ )</h1>
-        <emu-alg>
-          1. Let _O_ be the *this* value.
-          1. <del>Assert: Type(_O_) is Object and _O_ has a [[SyncIteratorRecord]] internal slot.</del>
-          1. Let _promiseCapability_ be ! NewPromiseCapability(%Promise%).
-          1. <ins>Let _check_ be Completion(RequireInternalSlot(_O_, [[SyncIteratorRecord]])).</ins>
-          1. <ins>IfAbruptRejectPromise(_check_, _promiseCapability_).</ins>
-          1. Let _syncIteratorRecord_ be _O_.[[SyncIteratorRecord]].
-          1. Let _result_ be Completion(IteratorNext(_syncIteratorRecord_, _value_)).
-          1. IfAbruptRejectPromise(_result_, _promiseCapability_).
-          1. Return AsyncFromSyncIteratorContinuation(_result_, _promiseCapability_).
-        </emu-alg>
-      </emu-clause>
-
-      <emu-clause id="sec-%asyncfromsynciteratorprototype%.return">
-        <h1>%AsyncFromSyncIteratorPrototype%.return ( _value_ )</h1>
-
-        <emu-alg>
-          1. Let _O_ be the *this* value.
-          1. <del>Assert: Type(_O_) is Object and _O_ has a [[SyncIteratorRecord]] internal slot.</del>
-          1. Let _promiseCapability_ be ! NewPromiseCapability(%Promise%).
-          1. <ins>Let _check_ be Completion(RequireInternalSlot(_O_, [[SyncIteratorRecord]])).</ins>
-          1. <ins>IfAbruptRejectPromise(_check_, _promiseCapability_).</ins>
-          1. Let _return_ be Completion(GetMethod(_syncIterator_, *"return"*)).
-          1. IfAbruptRejectPromise(_return_, _promiseCapability_).
-          1. If _return_ is *undefined*, then
-            1. Let _iterResult_ be CreateIterResultObject(_value_, *true*).
-            1. Perform ! Call(_promiseCapability_.[[Resolve]], *undefined*, &laquo; _iterResult_ &raquo;).
-            1. Return _promiseCapability_.[[Promise]].
-          1. Let _result_ be Completion(Call(_return_, _syncIterator_, &laquo; _value_ &raquo;)).
-          1. IfAbruptRejectPromise(_result_, _promiseCapability_).
-          1. If Type(_result_) is not Object, then
-            1. Perform ! Call(_promiseCapability_.[[Reject]], *undefined*, &laquo; a newly created *TypeError* object &raquo;).
-            1. Return _promiseCapability_.[[Promise]].
-          1. Return AsyncFromSyncIteratorContinuation(_result_, _promiseCapability_).
-        </emu-alg>
-      </emu-clause>
-
-      <emu-clause id="sec-%asyncfromsynciteratorprototype%.throw">
-        <h1>%AsyncFromSyncIteratorPrototype%.throw ( _value_ )</h1>
-
-        <emu-alg>
-          1. Let _O_ be the *this* value.
-          1. <del>Assert: Type(_O_) is Object and _O_ has a [[SyncIteratorRecord]] internal slot.</del>
-          1. Let _promiseCapability_ be ! NewPromiseCapability(%Promise%).
-          1. <ins>Let _check_ be Completion(RequireInternalSlot(_O_, [[SyncIteratorRecord]])).</ins>
-          1. <ins>IfAbruptRejectPromise(_check_, _promiseCapability_).</ins>
-          1. Let _syncIterator_ be _O_.[[SyncIteratorRecord]].[[Iterator]].
-          1. Let _throw_ be Completion(GetMethod(_syncIterator_, *"throw"*)).
-          1. IfAbruptRejectPromise(_throw_, _promiseCapability_).
-          1. If _throw_ is *undefined*, then
-            1. Perform ! Call(_promiseCapability_.[[Reject]], *undefined*, &laquo; _value_ &raquo;).
-            1. Return _promiseCapability_.[[Promise]].
-          1. Let _result_ be Completion(Call(_throw_, _syncIterator_, &laquo; _value_ &raquo;)).
-          1. IfAbruptRejectPromise(_result_, _promiseCapability_).
-          1. If Type(_result_) is not Object, then
-            1. Perform ! Call(_promiseCapability_.[[Reject]], *undefined*, &laquo; a newly created *TypeError* object &raquo;).
-            1. Return _promiseCapability_.[[Promise]].
-          1. Return AsyncFromSyncIteratorContinuation(_result_, _promiseCapability_).
-        </emu-alg>
-      </emu-clause>
-    </emu-clause>
   </emu-clause>
 </emu-clause>