[patch] remove GetKeysIterator and its callable check

See tc39/proposal-set-methods#101

.eslintrc

@@ -10,7 +10,7 @@
 				"RequireObjectCoercible",
 				"GetIntrinsic",
 				"GetSetRecord",
-				"GetKeysIterator",
+				"GetIteratorFromMethod",
 				"IteratorStep",
 				"IteratorValue",
 				"SetDataHas",
@@ -21,7 +21,6 @@
 				"Get",
 				"ToNumber",
 				"Type",
-				// GetKeysIterator
 				"Type",
 				"Call",
 				"Get",

aos/GetIteratorFromMethod.js

@@ -0,0 +1,25 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var Call = require('es-abstract/2023/Call');
+var Get = require('es-abstract/2023/Get');
+var Type = require('es-abstract/2023/Type');
+
+// https://tc39.es/ecma262/#sec-getiteratorfrommethod
+
+module.exports = function GetIteratorFromMethod(obj, method) {
+	var iterator = Call(method, obj); // step 1
+
+	if (Type(iterator) !== 'Object') {
+		throw new $TypeError('iterator must return an object'); // step 2
+	}
+
+	var nextMethod = Get(iterator, 'next'); // step 3
+
+	var iteratorRecord = { '[[Iterator]]': iterator, '[[NextMethod]]': nextMethod, '[[Done]]': false }; // step 4
+
+	return iteratorRecord; // step 5
+};

implementation.js

@@ -6,7 +6,7 @@ var $TypeError = GetIntrinsic('%TypeError%');
 
 var $Set = require('es-set/polyfill')();
 
-var GetKeysIterator = require('./aos/GetKeysIterator');
+var GetIteratorFromMethod = require('./aos/GetIteratorFromMethod');
 var GetSetRecord = require('./aos/GetSetRecord');
 var IteratorStep = require('es-abstract/2023/IteratorStep');
 var IteratorValue = require('es-abstract/2023/IteratorValue');
@@ -28,7 +28,7 @@ module.exports = function union(other) {
 
 	var otherRec = GetSetRecord(other); // step 3
 
-	var keysIter = GetKeysIterator(otherRec); // step 4
+	var keysIter = GetIteratorFromMethod(otherRec['[[Set]]'], otherRec['[[Keys]]']); // step 4
 
 	// 5. Let resultSetData be a copy of O.[[SetData]]; // step 5
 	var result = new $Set();