Normative: remove IsCallable check in GetKeysIterator (#101)

package.json

@@ -9,8 +9,8 @@
     "format": "emu-format --write 'spec/*.html'"
   },
   "devDependencies": {
-    "@tc39/ecma262-biblio": "^2.1.2407",
-    "ecmarkup": "^15.0.0"
+    "@tc39/ecma262-biblio": "2.1.2599",
+    "ecmarkup": "^17.0.2"
   },
   "version": "1.0.0",
   "repository": {

spec/index.html

@@ -14,7 +14,7 @@ <h1>Set.prototype.union ( _other_ )</h1>
     1. Let _O_ be the *this* value.
     1. Perform ? RequireInternalSlot(_O_, [[SetData]]).
     1. Let _otherRec_ be ? GetSetRecord(_other_).
-    1. Let _keysIter_ be ? GetKeysIterator(_otherRec_).
+    1. Let _keysIter_ be ? GetIteratorFromMethod(_otherRec_.[[Set]], _otherRec_.[[Keys]]).
     1. Let _resultSetData_ be a copy of _O_.[[SetData]].
     1. Let _next_ be *true*.
     1. Repeat, while _next_ is not *false*,
@@ -54,7 +54,7 @@ <h1>Set.prototype.intersection ( _other_ )</h1>
           1. NOTE: The number of elements in _O_.[[SetData]] may have increased during execution of _otherRec_.[[Has]].
           1. Set _thisSize_ to the number of elements of _O_.[[SetData]].
     1. Else,
-      1. Let _keysIter_ be ? GetKeysIterator(_otherRec_).
+      1. Let _keysIter_ be ? GetIteratorFromMethod(_otherRec_.[[Set]], _otherRec_.[[Keys]]).
       1. Let _next_ be *true*.
       1. Repeat, while _next_ is not *false*,
         1. Set _next_ to ? IteratorStep(_keysIter_).
@@ -91,7 +91,7 @@ <h1>Set.prototype.difference ( _other_ )</h1>
           1. If _inOther_ is *true*, then
             1. Set _resultSetData_[_index_] to ~empty~.
     1. Else,
-      1. Let _keysIter_ be ? GetKeysIterator(_otherRec_).
+      1. Let _keysIter_ be ? GetIteratorFromMethod(_otherRec_.[[Set]], _otherRec_.[[Keys]]).
       1. Let _next_ be *true*.
       1. Repeat, while _next_ is not *false*,
         1. Set _next_ to ? IteratorStep(_keysIter_).
@@ -113,7 +113,7 @@ <h1>Set.prototype.symmetricDifference ( _other_ )</h1>
     1. Let _O_ be the *this* value.
     1. Perform ? RequireInternalSlot(_O_, [[SetData]]).
     1. Let _otherRec_ be ? GetSetRecord(_other_).
-    1. Let _keysIter_ be ? GetKeysIterator(_otherRec_).
+    1. Let _keysIter_ be ? GetIteratorFromMethod(_otherRec_.[[Set]], _otherRec_.[[Keys]]).
     1. Let _resultSetData_ be a copy of _O_.[[SetData]].
     1. Let _next_ be *true*.
     1. Repeat, while _next_ is not *false*,
@@ -162,7 +162,7 @@ <h1>Set.prototype.isSupersetOf ( _other_ )</h1>
     1. Let _otherRec_ be ? GetSetRecord(_other_).
     1. Let _thisSize_ be the number of elements in _O_.[[SetData]].
     1. If _thisSize_ &lt; _otherRec_.[[Size]], return *false*.
-    1. Let _keysIter_ be ? GetKeysIterator(_otherRec_).
+    1. Let _keysIter_ be ? GetIteratorFromMethod(_otherRec_.[[Set]], _otherRec_.[[Keys]]).
     1. Let _next_ be *true*.
     1. Repeat, while _next_ is not *false*,
       1. Set _next_ to ? IteratorStep(_keysIter_).
@@ -194,7 +194,7 @@ <h1>Set.prototype.isDisjointFrom ( _other_ )</h1>
           1. NOTE: The number of elements in _O_.[[SetData]] may have increased during execution of _otherRec_.[[Has]].
           1. Set _thisSize_ to the number of elements of _O_.[[SetData]].
     1. Else,
-      1. Let _keysIter_ be ? GetKeysIterator(_otherRec_).
+      1. Let _keysIter_ be ? GetIteratorFromMethod(_otherRec_.[[Set]], _otherRec_.[[Keys]]).
       1. Let _next_ be *true*.
       1. Repeat, while _next_ is not *false*,
         1. Set _next_ to ? IteratorStep(_keysIter_).
@@ -296,23 +296,6 @@ <h1>
   </emu-alg>
 </emu-clause>
 
-<emu-clause id="sec-getkeysiterator" type="abstract operation">
-  <h1>
-    GetKeysIterator (
-      _setRec_: a Set Record,
-    ): either a normal completion containing an Iterator Record or a throw completion
-  </h1>
-  <dl class="header">
-  </dl>
-  <emu-alg>
-    1. Let _keysIter_ be ? Call(_setRec_.[[Keys]], _setRec_.[[Set]]).
-    1. If _keysIter_ is not an Object, throw a *TypeError* exception.
-    1. Let _nextMethod_ be ? Get(_keysIter_, *"next"*).
-    1. If IsCallable(_nextMethod_) is *false*, throw a *TypeError* exception.
-    1. Return a new Iterator Record { [[Iterator]]: _keysIter_, [[NextMethod]]: _nextMethod_, [[Done]]: *false* }.
-  </emu-alg>
-</emu-clause>
-
 <emu-clause id="sec-setdatahas" type="abstract operation">
   <h1>
     SetDataHas (