diff --git a/arrayLikeMethods.js b/arrayLikeMethods.js
index 4f1c8f2d29f6b240e1660afd768ecee4e9a03cf0..cc195bbeebf17f2a322158d755a8ba872bc97433 100644
--- a/arrayLikeMethods.js
+++ b/arrayLikeMethods.js
@@ -1,6 +1,6 @@
 /*!
 arrayLikeMethods.js
-date 1692547463377 [Mon Aug 21 2023 00:04:23 GMT+0800 (China Standard Time)]
+date 1693145244301 [Sun Aug 27 2023 22:07:24 GMT+0800 (China Standard Time)]
 (c) 2023 Bright_Leader
 Licensed under the Apache-2.0.
 */
@@ -163,9 +163,8 @@ ESLint [ http://eslint.org/ ] configurations
       require /* eslint-disable-line no-undef */
     ===typeFunction)&& /* NodeJS environment [ http://nodejs.org ] or some other environment that uses "module.exports" to import modules? */
     function(){
-      const exports_key="exports";
-      let exports;
-      isObjectType(exports=var0[exports_key])||(var0[exports_key]=exports=tryES5CreateNullPrototypeObject());
+      let key,exports;
+      isObjectType(exports=var0[key="exports"])||(var0[key]=exports=tryES5CreateNullPrototypeObject());
       exports[source_key]="module.exports";
       exports[isAsynchronous_key]=isAsynchronous;
       factory(exports,var1);
@@ -308,12 +307,12 @@ const isNotInfinity=function(value){
   return value!==infinity&&value!==negativeInfinity;
 };
 
-const isNormalNumber=function(value){
+const isFiniteNumber=function(value){
   return isNumber(value)&&isNotNaN(value)&&isNotInfinity(value);
 };
 
 const forceToInteger=function(value){
-  return isNormalNumber(value)?value-(value%1):value^0;
+  return isFiniteNumber(value)?value-(value%1):value^0;
 };
 
 const UNSIGNED_INT32_MAX=4294967295;
@@ -534,16 +533,14 @@ const definePropertyIsFunction=isFunction(defineProperty);
 
   return function(target,propertyName,propertyValue,isWritable,isEnumerable,isConfigurable){
     returnOrThrowObjectType(target);
-    definePropertyIsFunction?defineProperty(
-      target,
-      propertyName,
-      {
-        value:propertyValue,
-        writable:isWritable,
-        enumerable:isEnumerable,
-        configurable:isConfigurable
-      }
-    ):(target[propertyName]=propertyValue);
+    let tempObject;
+    if(definePropertyIsFunction){
+      (tempObject=new Object_constructor()).value=propertyValue;
+      tempObject.writable=isWritable;
+      tempObject.enumerable=isEnumerable;
+      tempObject.configurable=isConfigurable;
+      defineProperty(target,propertyName,tempObject);
+    }else target[propertyName]=propertyValue;
     return target;
   };
 }();
@@ -838,40 +835,34 @@ const nSymbol=(
   globalObject.Symbol /* http://262.ecma-international.org/6.0/#sec-symbol-objects */
 );
 
-const nSymbolIsFunction=(
-  isFunction(nSymbol)&&
-  isFunction(nSymbol["for"])&& /* http://262.ecma-international.org/6.0/#sec-symbol.for */
-  isFunction(nSymbol.keyFor) /* http://262.ecma-international.org/6.0/#sec-symbol.keyfor */
-);
-
 function isSymbol(value){
   return typeof value==="symbol"; /* http://262.ecma-international.org/6.0/#sec-typeof-operator-runtime-semantics-evaluation */
 }
 
-const tryES6AssignWellKnownSymbolProperty=function(target,symbolKeyName,propertyValue,writable,enumerable,configurable){
-  tryES5DefineProperty(
-    returnOrThrowObjectType(target),
+const iterator_key="iterator";
 
-    "@@"+symbolKeyName,
-    propertyValue,
+const nSymbolIsFunction=(
+  isFunction(nSymbol)&&
+  isSymbol(nSymbol[iterator_key]) /* http://262.ecma-international.org/6.0/#sec-symbol.iterator */
+);
 
-    writable,enumerable,configurable
-  );
+const retrieveWellKnownSymbol=function(symbolKeyName){
   let tempKey;
-  tryES5DefineProperty(
-    target,
+  return(
+    nSymbolIsFunction&&
+    symbolKeyName in nSymbol&&
+    isSymbol(tempKey=nSymbol[symbolKeyName]) /* http://262.ecma-international.org/6.0/#sec-well-known-symbols */
+  )?tempKey:"@@"+symbolKeyName;
+};
 
-    (
-      nSymbolIsFunction&&
-      symbolKeyName in nSymbol&&
-      isSymbol(tempKey=nSymbol[symbolKeyName]) /* http://262.ecma-international.org/6.0/#sec-well-known-symbols */
-    )?tempKey:"Symbol."+symbolKeyName,
-    propertyValue,
+const toStringTag_key="toStringTag",
+  isConcatSpreadable_key="isConcatSpreadable",
+  unscopables_key="unscopables";
 
-    writable,enumerable,configurable
-  );
-  return target;
-};
+const iterator_wellKnownSymbol=retrieveWellKnownSymbol(iterator_key),
+  toStringTag_wellKnownSymbol=retrieveWellKnownSymbol(toStringTag_key), /* http://262.ecma-international.org/6.0/#sec-symbol.tostringtag */
+  isConcatSpreadable_wellKnownSymbol=retrieveWellKnownSymbol(isConcatSpreadable_key), /* http://262.ecma-international.org/6.0/#sec-symbol.isconcatspreadable */
+  unscopables_wellKnownSymbol=retrieveWellKnownSymbol(unscopables_key); /* http://262.ecma-international.org/6.0/#sec-symbol.unscopables */
 
 function returnThis_makeFunction(){
   return function(){
@@ -879,8 +870,6 @@ function returnThis_makeFunction(){
   };
 }
 
-const iterator_key="iterator";
-
 const IterableIterator=function(){ /* http://262.ecma-international.org/6.0/#sec-iterator-interface */
 /* http://262.ecma-international.org/6.0/#sec-iterable-interface */
 
@@ -932,10 +921,10 @@ tryES5DefineProperty(
   False,False,False
 );
 
-tryES6AssignWellKnownSymbolProperty(
+tryES5DefineProperty(
   constructorFn_prototype,
 
-  iterator_key, /* http://262.ecma-international.org/6.0/#sec-symbol.iterator */
+  iterator_wellKnownSymbol,
   returnThis_makeFunction(), /* http://262.ecma-international.org/6.0/#sec-%iteratorprototype%-@@iterator */
 
   False,False,False
@@ -1026,10 +1015,10 @@ so we ignore this "if" case entirely and jump to step 9 directly.
   False,False,False
 );
 
-tryES6AssignWellKnownSymbolProperty(
+tryES5DefineProperty(
   ArrayIteratorPrototype,
 
-  "toStringTag", /* http://262.ecma-international.org/6.0/#sec-symbol.tostringtag */
+  toStringTag_wellKnownSymbol,
   "Array Iterator", /* http://262.ecma-international.org/6.0/#sec-%arrayiteratorprototype%-@@tostringtag */
 
   False,False,True
@@ -1344,30 +1333,30 @@ http://www.ecma-international.org/wp-content/uploads/ECMA-262_7th_edition_june_2
       useDefaultDefinePropertyConfig?True:configurable
     );
 
-    tryES6AssignWellKnownSymbolProperty(
+    tryES5DefineProperty(
       target,
 
-      "isConcatSpreadable", /* http://262.ecma-international.org/6.0/#sec-symbol.isconcatspreadable */
+      isConcatSpreadable_wellKnownSymbol,
       True,
 
       useDefaultDefinePropertyConfig?True:writable,
       useDefaultDefinePropertyConfig?False:enumerable,
       useDefaultDefinePropertyConfig?True:configurable
     );
-    tryES6AssignWellKnownSymbolProperty(
+    tryES5DefineProperty(
       target,
 
-      iterator_key,
+      iterator_wellKnownSymbol,
       arrayLikeValues,
 
       useDefaultDefinePropertyConfig?True:writable,
       useDefaultDefinePropertyConfig?False:enumerable,
       useDefaultDefinePropertyConfig?True:configurable
     );
-    tryES6AssignWellKnownSymbolProperty(
+    tryES5DefineProperty(
       target,
 
-      "unscopables", /* http://262.ecma-international.org/6.0/#sec-symbol.unscopables */
+      unscopables_wellKnownSymbol,
       getArraySymbolunscopables(tryES5CreateNullPrototypeObject()),
 
       useDefaultDefinePropertyConfig?False:writable,
@@ -1384,7 +1373,7 @@ const exportStaticMethods=function(){
 const assist=function(target){
   returnOrThrowObjectType(target).isInteger=isInteger;
   target.isNotInfinity=isNotInfinity;
-  target.isNormalNumber=isNormalNumber;
+  target.isFiniteNumber=isFiniteNumber;
   target.forceToInteger=forceToInteger;
   target.isUint32=isUint32;
   target.isSint32=isSint32;
@@ -1493,6 +1482,31 @@ temp0[key_plus_value_itemKind]=key_plus_value_itemKind;
 
 createArrayIterator.allowedKinds=temp0;
 
+(temp0=tryES5CreateNullPrototypeObject())[iterator_key]=iterator_wellKnownSymbol;
+temp0[toStringTag_key]=toStringTag_wellKnownSymbol;
+temp0[isConcatSpreadable_key]=isConcatSpreadable_wellKnownSymbol;
+temp0[unscopables_key]=unscopables_wellKnownSymbol;
+
+tryES5DefineProperty(
+  objectToExport,
+
+  "wellKnownSymbols",temp0,
+
+  True,True,True
+);
+
+(temp0=tryES5CreateNullPrototypeObject())[IteratedObject_doubleBracketString]=IteratedObject_internalSlot;
+temp0[ArrayIteratorNextIndex_doubleBracketString]=ArrayIteratorNextIndex_internalSlot;
+temp0[ArrayIterationKind_doubleBracketString]=ArrayIterationKind_internalSlot;
+
+tryES5DefineProperty(
+  objectToExport,
+
+  "uniqueSymbols",temp0,
+
+  True,True,True
+);
+
 (temp0=tryES5CreateNullPrototypeObject()).exportStaticMethods=exportStaticMethods;
 temp0.exportInstanceMethods=exportInstanceMethods;
 temp0.exportConstructors=exportConstructors;
@@ -1504,7 +1518,7 @@ mergeObject(
 );
 
 (temp0=tryES5CreateNullPrototypeObject()).author="Bright_Leader";
-temp0.date=1692547463377;
+temp0.date=1693145244301;
 
 mergeObject(
   objectToExport,