Merge autoland to mozilla-central. a=merge

dom/webidl/CSSConditionRule.webidl

@@ -10,6 +10,5 @@
 // https://drafts.csswg.org/css-conditional/#the-cssconditionrule-interface
 [Exposed=Window]
 interface CSSConditionRule : CSSGroupingRule {
-  [SetterThrows]
+  readonly attribute UTF8String conditionText;
-  attribute UTF8String conditionText;
 };

dom/webidl/CSSContainerRule.webidl

@@ -0,0 +1,14 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://drafts.csswg.org/css-contain-3/#the-csscontainerrule-interface
+ */
+
+// https://drafts.csswg.org/css-contain-3/#the-csscontainerrule-interface
+[Exposed=Window, Pref="layout.css.container-queries.enabled"]
+interface CSSContainerRule : CSSConditionRule {
+};
+

dom/webidl/CaretStateChangedEvent.webidl

@@ -11,7 +11,8 @@ enum CaretChangedReason {
   "taponcaret",
   "presscaret",
   "releasecaret",
-  "scroll"
+  "scroll",
+  "dragcaret"
 };
 
 dictionary CaretStateChangedEventInit : EventInit {
@@ -23,6 +24,8 @@ dictionary CaretStateChangedEventInit : EventInit {
   boolean selectionVisible = false;
   boolean selectionEditable = false;
   DOMString selectedTextContent = "";
+  long clientX = 0;
+  long clientY = 0;
 };
 
 [ChromeOnly,
@@ -40,4 +43,8 @@ interface CaretStateChangedEvent : Event {
   readonly attribute boolean selectionVisible;
   readonly attribute boolean selectionEditable;
   readonly attribute DOMString selectedTextContent;
+  [Pref="layout.accessiblecaret.magnifier.enabled"]
+  readonly attribute long clientX;
+  [Pref="layout.accessiblecaret.magnifier.enabled"]
+  readonly attribute long clientY;
 };

dom/webidl/moz.build

@@ -475,6 +475,7 @@ WEBIDL_FILES = [
     "CSS.webidl",
     "CSSAnimation.webidl",
     "CSSConditionRule.webidl",
+    "CSSContainerRule.webidl",
     "CSSCounterStyleRule.webidl",
     "CSSFontFaceRule.webidl",
     "CSSFontFeatureValuesRule.webidl",

js/src/tests/jstests.list

@@ -606,6 +606,34 @@ fails-if(!xulRuntime.shell) script test262/language/statements/class/subclass-bu
 # https://bugzilla.mozilla.org/show_bug.cgi?id=1648202
 skip script test262/built-ins/RegExp/named-groups/non-unicode-property-names-valid.js
 
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1761989
+skip script test262/built-ins/TypedArrayConstructors/ctors/no-species.js
+
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1763605
+skip script test262/built-ins/TypedArray/prototype/set/array-arg-targetbuffer-detached-on-get-src-value-no-throw.js
+
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1763606
+skip script test262/built-ins/TypedArray/prototype/sort/sort-tonumber.js
+
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1763607
+skip script test262/intl402/NumberFormat/constructor-roundingIncrement-invalid.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-priority-less-precision.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-500.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-50.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-5.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-20.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-250.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-25.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-5000.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-10.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-200.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-2000.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-100.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-2500.js
+skip script test262/intl402/NumberFormat/prototype/format/format-rounding-increment-1000.js
+skip script test262/intl402/PluralRules/prototype/selectRange/nan-arguments-throws.js
+skip script test262/intl402/PluralRules/prototype/selectRange/undefined-arguments-throws.js
+
 
 ###########################################################
 # Tests disabled due to issues in test262 importer script #
@@ -637,112 +665,12 @@ skip script test262/language/module-code/top-level-await/await-dynamic-import-re
 # https://github.com/tc39/ecma402/issues/402
 skip script test262/intl402/DateTimeFormat/prototype/resolvedOptions/hourCycle-default.js
 
-# https://github.com/tc39/test262/issues/3139
+# Not yet updated for https://github.com/tc39/proposal-intl-numberformat-v3/pull/92
-skip script test262/intl402/DisplayNames/prototype/of/type-calendar-valid.js
-
-# Tests not yet updated for https://github.com/tc39/proposal-intl-numberformat-v3
-skip script test262/intl402/NumberFormat/prototype/resolvedOptions/order.js
 skip script test262/intl402/NumberFormat/test-option-useGrouping.js
-skip script test262/intl402/NumberFormat/prototype/resolvedOptions/basic.js
+skip script test262/intl402/NumberFormat/test-option-useGrouping-extended.js
-skip script test262/intl402/PluralRules/prototype/resolvedOptions/order.js
 
-# https://github.com/tc39/test262/pull/3199
+# Missing "SharedArrayBuffer" features tag
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Mark.js
+fails-if(!xulRuntime.shell) script test262/built-ins/SharedArrayBuffer/prototype/prop-desc.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Arabic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Currency_Symbol.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Letter.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Balinese.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Dash.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Kannada.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Cased.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Changes_When_Casefolded.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Changes_When_Titlecased.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Emoji_Modifier_Base.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Diacritic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Han.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Kannada.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Modifier_Symbol.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Telugu.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Ethiopic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Katakana.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Canadian_Aboriginal.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Takri.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Unassigned.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Kaithi.js
-skip script test262/built-ins/RegExp/property-escapes/generated/ID_Continue.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Terminal_Punctuation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Ideographic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Katakana.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Balinese.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Changes_When_Lowercased.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Bidi_Mirrored.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Lowercase.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Cased_Letter.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Alphabetic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Other_Symbol.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Spacing_Mark.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Format.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Symbol.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Inherited.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Grapheme_Base.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Uppercase_Letter.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Kaithi.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Adlam.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Canadian_Aboriginal.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Brahmi.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Assigned.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Variation_Selector.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Ahom.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Soft_Dotted.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Ethiopic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Uppercase.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Default_Ignorable_Code_Point.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Decimal_Number.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Modifier_Letter.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Sentence_Terminal.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Dash_Punctuation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Ahom.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Nko.js
-skip script test262/built-ins/RegExp/property-escapes/generated/XID_Continue.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Hiragana.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Arabic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Extender.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Grapheme_Extend.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Unified_Ideograph.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Common.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Number.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Emoji_Presentation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Mongolian.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Changes_When_Casemapped.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Close_Punctuation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/ID_Start.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Latin.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Takri.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Other_Punctuation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Common.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Glagolitic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Brahmi.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Changes_When_Uppercased.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Emoji.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Telugu.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Glagolitic.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Open_Punctuation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Han.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Lowercase_Letter.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Mongolian.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Nonspacing_Mark.js
-skip script test262/built-ins/RegExp/property-escapes/generated/XID_Start.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Other_Letter.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Inherited.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Tagalog.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Punctuation.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Hiragana.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Syriac.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_-_Latin.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Script_Extensions_-_Tagalog.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Case_Ignorable.js
-skip script test262/built-ins/RegExp/property-escapes/generated/General_Category_-_Other.js
-skip script test262/built-ins/RegExp/property-escapes/generated/Changes_When_NFKC_Casefolded.js
 
 
 ##############################################

js/src/tests/test262-update.py

@@ -25,13 +25,16 @@ UNSUPPORTED_FEATURES = set(
         "Intl.DateTimeFormat-quarter",
         "Intl.Segmenter",
         "Intl.Locale-info",
+        "Intl.DurationFormat",
         "Atomics.waitAsync",
         "legacy-regexp",
         "json-modules",
         "resizable-arraybuffer",
         "Temporal",
-        "callable-boundary-realms",
+        "ShadowRealm",
         "array-find-from-last",
+        "array-grouping",
+        "regexp-v-flag",
     ]
 )
 FEATURE_CHECK_NEEDED = {
@@ -40,7 +43,11 @@ FEATURE_CHECK_NEEDED = {
     "SharedArrayBuffer": "!this.hasOwnProperty('SharedArrayBuffer')",
     "WeakRef": "!this.hasOwnProperty('WeakRef')",
 }
-RELEASE_OR_BETA = set([])
+RELEASE_OR_BETA = set(
+    [
+        "Intl.NumberFormat-v3",
+    ]
+)
 SHELL_OPTIONS = {
     "import-assertions": "--enable-import-assertions",
 }
@@ -852,7 +859,7 @@ if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Update the test262 test suite.")
     parser.add_argument(
         "--url",
-        default="git://github.com/tc39/test262.git",
+        default="https://github.com/tc39/test262.git",
         help="URL to git repository (default: %(default)s)",
     )
     parser.add_argument(

js/src/tests/test262/GIT-INFO

@@ -1,9 +1,8 @@
-commit 45a913c057892bdd26f7bc06a59a0c7420f2d3ec
+commit d7c0a2076c2b0c1531aef7069d4abe70eec44ee3
-Author: Philip Chimento <pchimento@igalia.com>
+Author: Shu-yu Guo <syg@chromium.org>
-Date:   Wed Aug 11 12:31:23 2021 -0700
+Date:   Mon Apr 4 16:36:56 2022 -0700
 
-    Add branding tests from Temporal (#3138)
+    Remove check for per-comparator call detach check in TypedArray.prototype.sort
     
-    Closes: #3137
+    This updates tests in line with the normative change in
-    
+    https://github.com/tc39/ecma262/pull/2723
-    Co-authored-by: Ms2ger <Ms2ger@igalia.com>

js/src/tests/test262/annexB/built-ins/RegExp/prototype/compile/this-cross-realm-instance.js

@@ -21,7 +21,7 @@ assert.throws(
 );
 
 assert.throws(
-  TypeError,
+  other.TypeError,
   function () {
     other.RegExp.prototype.compile.call(regexp);
   },

js/src/tests/test262/built-ins/Array/S15.4.1_A1.1_T1.js

@@ -12,7 +12,6 @@ description: >
     this property
 ---*/
 
-//CHECK#1
 Array.prototype.myproperty = 42;
 var x = Array();
 assert.sameValue(x.myproperty, 42, 'The value of x.myproperty is expected to be 42');

js/src/tests/test262/built-ins/Array/S15.4.1_A1.1_T2.js

@@ -10,12 +10,10 @@ es5id: 15.4.1_A1.1_T2
 description: Array.prototype.toString = Object.prototype.toString
 ---*/
 
-//CHECK#1
 Array.prototype.toString = Object.prototype.toString;
 var x = Array();
 assert.sameValue(x.toString(), "[object Array]", 'x.toString() must return "[object Array]"');
 
-//CHECK#2
 Array.prototype.toString = Object.prototype.toString;
 var x = Array(0, 1, 2);
 assert.sameValue(x.toString(), "[object Array]", 'x.toString() must return "[object Array]"');

js/src/tests/test262/built-ins/Array/S15.4.1_A1.2_T1.js

@@ -7,12 +7,10 @@ es5id: 15.4.1_A1.2_T1
 description: Checking use Object.prototype.toString
 ---*/
 
-//CHECK#1
 var x = Array();
 x.getClass = Object.prototype.toString;
 assert.sameValue(x.getClass(), "[object Array]", 'x.getClass() must return "[object Array]"');
 
-//CHECK#2
 var x = Array(0, 1, 2);
 x.getClass = Object.prototype.toString;
 assert.sameValue(x.getClass(), "[object Array]", 'x.getClass() must return "[object Array]"');

js/src/tests/test262/built-ins/Array/S15.4.1_A2.2_T1.js

@@ -12,7 +12,6 @@ es5id: 15.4.1_A2.2_T1
 description: Checking correct work this algorithm
 ---*/
 
-//CHECK#
 var x = Array(
   0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
   10, 11, 12, 13, 14, 15, 16, 17, 18, 19,

js/src/tests/test262/built-ins/Array/S15.4.2.1_A1.1_T1.js

@@ -12,7 +12,6 @@ description: >
     this property
 ---*/
 
-//CHECK#1
 Array.prototype.myproperty = 1;
 var x = new Array();
 assert.sameValue(x.myproperty, 1, 'The value of x.myproperty is expected to be 1');

js/src/tests/test262/built-ins/Array/S15.4.2.1_A1.1_T2.js

@@ -10,12 +10,10 @@ es5id: 15.4.2.1_A1.1_T2
 description: Array.prototype.toString = Object.prototype.toString
 ---*/
 
-//CHECK#1
 Array.prototype.toString = Object.prototype.toString;
 var x = new Array();
 assert.sameValue(x.toString(), "[object Array]", 'x.toString() must return "[object Array]"');
 
-//CHECK#2
 Array.prototype.toString = Object.prototype.toString;
 var x = new Array(0, 1, 2);
 assert.sameValue(x.toString(), "[object Array]", 'x.toString() must return "[object Array]"');

js/src/tests/test262/built-ins/Array/S15.4.2.1_A1.2_T1.js

@@ -7,12 +7,10 @@ es5id: 15.4.2.1_A1.2_T1
 description: Checking use Object.prototype.toString
 ---*/
 
-//CHECK#1
 var x = new Array();
 x.getClass = Object.prototype.toString;
 assert.sameValue(x.getClass(), "[object Array]", 'x.getClass() must return "[object Array]"');
 
-//CHECK#2
 var x = new Array(0, 1, 2);
 x.getClass = Object.prototype.toString;
 assert.sameValue(x.getClass(), "[object Array]", 'x.getClass() must return "[object Array]"');

js/src/tests/test262/built-ins/Array/S15.4.2.1_A2.2_T1.js

@@ -12,7 +12,6 @@ es5id: 15.4.2.1_A2.2_T1
 description: Checking correct work this algorithm
 ---*/
 
-//CHECK#
 var x = new Array(
   0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
   10, 11, 12, 13, 14, 15, 16, 17, 18, 19,

js/src/tests/test262/built-ins/Array/S15.4.3_A1.1_T2.js

@@ -9,7 +9,6 @@ es5id: 15.4.3_A1.1_T2
 description: Function.prototype.toString = Object.prototype.toString
 ---*/
 
-//CHECK#1
 Function.prototype.toString = Object.prototype.toString;
 
 assert.sameValue(

js/src/tests/test262/built-ins/Array/S15.4.5.1_A1.2_T2.js

@@ -11,12 +11,10 @@ es5id: 15.4.5.1_A1.2_T2
 description: Checking an inherited property
 ---*/
 
-//CHECK#1
 Array.prototype[2] = -1;
 var x = [0, 1, 2];
 assert.sameValue(x[2], 2, 'The value of x[2] is expected to be 2');
 
-//CHECK#2
 x.length = 2;
 assert.sameValue(x[2], -1, 'The value of x[2] is expected to be -1');
 

js/src/tests/test262/built-ins/Array/S15.4.5.1_A2.1_T1.js

@@ -9,19 +9,16 @@ es5id: 15.4.5.1_A2.1_T1
 description: P in [4294967295, -1, true]
 ---*/
 
-//CHECK#1
 var x = [];
 x[4294967295] = 1;
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 assert.sameValue(x[4294967295], 1, 'The value of x[4294967295] is expected to be 1');
 
-//CHECK#2
 x = [];
 x[-1] = 1;
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 assert.sameValue(x[-1], 1, 'The value of x[-1] is expected to be 1');
 
-//CHECK#3
 x = [];
 x[true] = 1;
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');

js/src/tests/test262/built-ins/Array/S15.4.5.1_A2.2_T1.js

@@ -9,16 +9,13 @@ es5id: 15.4.5.1_A2.2_T1
 description: length === 100, P in [0, 98, 99]
 ---*/
 
-//CHECK#1
 var x = Array(100);
 x[0] = 1;
 assert.sameValue(x.length, 100, 'The value of x.length is expected to be 100');
 
-//CHECK#2
 x[98] = 1;
 assert.sameValue(x.length, 100, 'The value of x.length is expected to be 100');
 
-//CHECK#3
 x[99] = 1;
 assert.sameValue(x.length, 100, 'The value of x.length is expected to be 100');
 

js/src/tests/test262/built-ins/Array/S15.4.5.1_A2.3_T1.js

@@ -9,12 +9,10 @@ es5id: 15.4.5.1_A2.3_T1
 description: length = 100, P in [100, 199]
 ---*/
 
-//CHECK#1
 var x = Array(100);
 x[100] = 1;
 assert.sameValue(x.length, 101, 'The value of x.length is expected to be 101');
 
-//CHECK#2
 x[199] = 1;
 assert.sameValue(x.length, 200, 'The value of x.length is expected to be 200');
 

js/src/tests/test262/built-ins/Array/S15.4.5.2_A1_T1.js

@@ -10,23 +10,18 @@ es5id: 15.4.5.2_A1_T1
 description: Checking boundary points
 ---*/
 
-//CHECK#1
 var x = [];
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 
-//CHECK#2
 x[0] = 1;
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#3
 x[1] = 1;
 assert.sameValue(x.length, 2, 'The value of x.length is expected to be 2');
 
-//CHECK#4
 x[2147483648] = 1;
 assert.sameValue(x.length, 2147483649, 'The value of x.length is expected to be 2147483649');
 
-//CHECK#5
 x[4294967294] = 1;
 assert.sameValue(x.length, 4294967295, 'The value of x.length is expected to be 4294967295');
 

js/src/tests/test262/built-ins/Array/S15.4.5.2_A1_T2.js

@@ -10,12 +10,10 @@ es5id: 15.4.5.2_A1_T2
 description: P = "2^32 - 1" is not index array
 ---*/
 
-//CHECK#1
 var x = [];
 x[4294967295] = 1;
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 
-//CHECK#2
 var y = [];
 y[1] = 1;
 y[4294967295] = 1;

js/src/tests/test262/built-ins/Array/S15.4.5.2_A2_T1.js

@@ -9,19 +9,15 @@ es5id: 15.4.5.2_A2_T1
 description: Checking length property
 ---*/
 
-//CHECK#1
 var x = [];
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 
-//CHECK#2
 x[0] = 1;
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#3
 x[1] = 1;
 assert.sameValue(x.length, 2, 'The value of x.length is expected to be 2');
 
-//CHECK#4
 x[9] = 1;
 assert.sameValue(x.length, 10, 'The value of x.length is expected to be 10');
 

js/src/tests/test262/built-ins/Array/S15.4.5.2_A3_T1.js

@@ -11,12 +11,10 @@ description: >
     is an array index
 ---*/
 
-//CHECK#1
 var x = [];
 x.length = 1;
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#2
 x[5] = 1;
 x.length = 10;
 assert.sameValue(x.length, 10, 'The value of x.length is expected to be 10');

js/src/tests/test262/built-ins/Array/S15.4.5.2_A3_T2.js

@@ -11,7 +11,6 @@ description: >
     is an array index
 ---*/
 
-//CHECK#1
 var x = [];
 x[1] = 1;
 x[3] = 3;
@@ -21,15 +20,12 @@ assert.sameValue(x.length, 4, 'The value of x.length is expected to be 4');
 assert.sameValue(x[5], undefined, 'The value of x[5] is expected to equal undefined');
 assert.sameValue(x[3], 3, 'The value of x[3] is expected to be 3');
 
-//CHECK#4
 x.length = new Number(6);
 assert.sameValue(x[5], undefined, 'The value of x[5] is expected to equal undefined');
 
-//CHECK#5
 x.length = 0;
 assert.sameValue(x[0], undefined, 'The value of x[0] is expected to equal undefined');
 
-//CHECK#6
 x.length = 1;
 assert.sameValue(x[1], undefined, 'The value of x[1] is expected to equal undefined');
 

js/src/tests/test262/built-ins/Array/S15.4.5.2_A3_T3.js

@@ -9,12 +9,10 @@ es5id: 15.4.5.2_A3_T3
 description: "[[Put]] (length, 4294967296)"
 ---*/
 
-//CHECK#1
 var x = [];
 x.length = 4294967295;
 assert.sameValue(x.length, 4294967295, 'The value of x.length is expected to be 4294967295');
 
-//CHECK#2
 try {
   x = [];
   x.length = 4294967296;

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T10.js

@@ -9,7 +9,6 @@ es5id: 15.4_A1.1_T10
 description: Array index is power of two
 ---*/
 
-//CHECK#
 var x = [];
 var k = 1;
 for (var i = 0; i < 32; i++) {

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T4.js

@@ -9,12 +9,10 @@ es5id: 15.4_A1.1_T4
 description: Checking for string primitive
 ---*/
 
-//CHECK#1
 var x = [];
 x["0"] = 0;
 assert.sameValue(x[0], 0, 'The value of x[0] is expected to be 0');
 
-//CHECK#2
 var y = [];
 y["1"] = 1;
 assert.sameValue(y[1], 1, 'The value of y[1] is expected to be 1');

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T5.js

@@ -9,13 +9,11 @@ es5id: 15.4_A1.1_T5
 description: Checking for null and undefined
 ---*/
 
-//CHECK#1
 var x = [];
 x[null] = 0;
 assert.sameValue(x[0], undefined, 'The value of x[0] is expected to equal undefined');
 assert.sameValue(x["null"], 0, 'The value of x["null"] is expected to be 0');
 
-//CHECK#3
 var y = [];
 y[undefined] = 0;
 assert.sameValue(y[0], undefined, 'The value of y[0] is expected to equal undefined');

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T6.js

@@ -9,13 +9,11 @@ es5id: 15.4_A1.1_T6
 description: Checking for Boolean object
 ---*/
 
-//CHECK#1
 var x = [];
 x[new Boolean(true)] = 1;
 assert.sameValue(x[1], undefined, 'The value of x[1] is expected to equal undefined');
 assert.sameValue(x["true"], 1, 'The value of x["true"] is expected to be 1');
 
-//CHECK#3
 x[new Boolean(false)] = 0;
 assert.sameValue(x[0], undefined, 'The value of x[0] is expected to equal undefined');
 assert.sameValue(x["false"], 0, 'The value of x["false"] is expected to be 0');

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T7.js

@@ -9,17 +9,14 @@ es5id: 15.4_A1.1_T7
 description: Checking for Number object
 ---*/
 
-//CHECK#1
 var x = [];
 x[new Number(0)] = 0;
 assert.sameValue(x[0], 0, 'The value of x[0] is expected to be 0');
 
-//CHECK#2
 var y = [];
 y[new Number(1)] = 1;
 assert.sameValue(y[1], 1, 'The value of y[1] is expected to be 1');
 
-//CHECK#3
 var z = [];
 z[new Number(1.1)] = 1;
 assert.sameValue(z["1.1"], 1, 'The value of z["1.1"] is expected to be 1');

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T8.js

@@ -9,17 +9,14 @@ es5id: 15.4_A1.1_T8
 description: Checking for Number object
 ---*/
 
-//CHECK#1
 var x = [];
 x[new String("0")] = 0;
 assert.sameValue(x[0], 0, 'The value of x[0] is expected to be 0');
 
-//CHECK#2
 var y = [];
 y[new String("1")] = 1;
 assert.sameValue(y[1], 1, 'The value of y[1] is expected to be 1');
 
-//CHECK#3
 var z = [];
 z[new String("1.1")] = 1;
 assert.sameValue(z["1.1"], 1, 'The value of z["1.1"] is expected to be 1');

js/src/tests/test262/built-ins/Array/S15.4_A1.1_T9.js

@@ -9,7 +9,6 @@ es5id: 15.4_A1.1_T9
 description: If Type(value) is Object, evaluate ToPrimitive(value, String)
 ---*/
 
-//CHECK#1
 var x = [];
 var object = {
   valueOf: function() {
@@ -19,7 +18,6 @@ var object = {
 x[object] = 0;
 assert.sameValue(x["[object Object]"], 0, 'The value of x["[object Object]"] is expected to be 0');
 
-//CHECK#2
 x = [];
 var object = {
   valueOf: function() {
@@ -32,7 +30,6 @@ var object = {
 x[object] = 0;
 assert.sameValue(x[0], 0, 'The value of x[0] is expected to be 0');
 
-//CHECK#3
 x = [];
 var object = {
   valueOf: function() {
@@ -45,7 +42,6 @@ var object = {
 x[object] = 0;
 assert.sameValue(x[1], 0, 'The value of x[1] is expected to be 0');
 
-//CHECK#4
 try {
   x = [];
   var object = {
@@ -63,7 +59,6 @@ catch (e) {
   assert.notSameValue(e, "error", 'The value of e is not "error"');
 }
 
-//CHECK#5
 x = [];
 var object = {
   toString: function() {
@@ -73,7 +68,6 @@ var object = {
 x[object] = 0;
 assert.sameValue(x[1], 0, 'The value of x[1] is expected to be 0');
 
-//CHECK#6
 x = [];
 var object = {
   valueOf: function() {
@@ -86,7 +80,6 @@ var object = {
 x[object] = 0;
 assert.sameValue(x[1], 0, 'The value of x[1] is expected to be 0');
 
-//CHECK#7
 try {
   x = [];
   var object = {
@@ -104,7 +97,6 @@ catch (e) {
   assert.sameValue(e, "error", 'The value of e is expected to be "error"');
 }
 
-//CHECK#8
 try {
   x = [];
   var object = {

js/src/tests/test262/built-ins/Array/from/Array.from-descriptor.js

@@ -3,8 +3,7 @@
 
 /*---
 description: Testing descriptor property of Array.from
-includes:
+includes: [propertyHelper.js]
-    - propertyHelper.js
 esid: sec-array.from
 ---*/
 

js/src/tests/test262/built-ins/Array/from/array-like-has-length-but-no-indexes-with-values.js

@@ -0,0 +1,41 @@
+// Copyright (c) 2021 Rick Waldron.  All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-array.from
+description: >
+    Creates an array with length that is equal to the value of the
+    length property of the given array-like, regardless of
+    the presence of corresponding indices and values.
+info: |
+    Array.from ( items [ , mapfn [ , thisArg ] ] )
+
+    7. Let arrayLike be ! ToObject(items).
+    8. Let len be ? LengthOfArrayLike(arrayLike).
+    9. If IsConstructor(C) is true, then
+      a. Let A be ? Construct(C, « 𝔽(len) »).
+    10. Else,
+      a. Let A be ? ArrayCreate(len).
+
+includes: [compareArray.js]
+---*/
+
+const length = 5;
+
+const newlyCreatedArray = Array.from({ length });
+assert.sameValue(
+  newlyCreatedArray.length,
+  length,
+  "The newly created array's length is equal to the value of the length property for the provided array like object"
+);
+assert.compareArray(newlyCreatedArray, [undefined, undefined, undefined, undefined, undefined]);
+
+const newlyCreatedAndMappedArray = Array.from({ length }).map(x => 1);
+assert.sameValue(
+  newlyCreatedAndMappedArray.length,
+  length,
+  "The newly created and mapped array's length is equal to the value of the length property for the provided array like object"
+);
+assert.compareArray(newlyCreatedAndMappedArray, [1, 1, 1, 1, 1]);
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/isArray/descriptor.js

@@ -3,8 +3,7 @@
 
 /*---
 description: Testing descriptor property of Array.isArray
-includes:
+includes: [propertyHelper.js]
-    - propertyHelper.js
 esid: sec-array.isarray
 ---*/
 

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A1.1_T1.js

@@ -13,7 +13,6 @@ description: >
     this property
 ---*/
 
-//CHECK#1
 Array.prototype.myproperty = 1;
 var x = new Array(0);
 assert.sameValue(x.myproperty, 1, 'The value of x.myproperty is expected to be 1');

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A1.1_T2.js

@@ -11,7 +11,6 @@ es5id: 15.4.2.2_A1.1_T2
 description: Array.prototype.toString = Object.prototype.toString
 ---*/
 
-//CHECK#1
 Array.prototype.toString = Object.prototype.toString;
 var x = new Array(0);
 assert.sameValue(x.toString(), "[object Array]", 'x.toString() must return "[object Array]"');

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A1.2_T1.js

@@ -8,7 +8,6 @@ es5id: 15.4.2.2_A1.2_T1
 description: Checking use Object.prototype.toString
 ---*/
 
-//CHECK#1
 var x = new Array(0);
 assert.sameValue(Object.prototype.toString.call(x), "[object Array]", 'Object.prototype.toString.call(new Array(0)) must return "[object Array]"');
 

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A2.1_T1.js

@@ -10,15 +10,12 @@ es5id: 15.4.2.2_A2.1_T1
 description: Array constructor is given one argument
 ---*/
 
-//CHECK#1
 var x = new Array(0);
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 
-//CHECK#2
 var x = new Array(1);
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#3
 var x = new Array(4294967295);
 assert.sameValue(x.length, 4294967295, 'The value of x.length is expected to be 4294967295');
 

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A2.2_T1.js

@@ -10,7 +10,6 @@ es5id: 15.4.2.2_A2.2_T1
 description: Use try statement. len = -1, 4294967296, 4294967297
 ---*/
 
-//CHECK#1
 try {
   new Array(-1);
   throw new Test262Error('#1.1: new Array(-1) throw RangeError. Actual: ' + (new Array(-1)));
@@ -22,7 +21,6 @@ try {
   );
 }
 
-//CHECK#2
 try {
   new Array(4294967296);
   throw new Test262Error('#2.1: new Array(4294967296) throw RangeError. Actual: ' + (new Array(4294967296)));
@@ -34,7 +32,6 @@ try {
   );
 }
 
-//CHECK#3
 try {
   new Array(4294967297);
   throw new Test262Error('#3.1: new Array(4294967297) throw RangeError. Actual: ' + (new Array(4294967297)));

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A2.2_T2.js

@@ -10,7 +10,6 @@ es5id: 15.4.2.2_A2.2_T2
 description: Use try statement. len = NaN, +/-Infinity
 ---*/
 
-//CHECK#1
 try {
   new Array(NaN);
   throw new Test262Error('#1.1: new Array(NaN) throw RangeError. Actual: ' + (new Array(NaN)));
@@ -22,7 +21,6 @@ try {
   );
 }
 
-//CHECK#2
 try {
   new Array(Number.POSITIVE_INFINITY);
   throw new Test262Error('#2.1: new Array(Number.POSITIVE_INFINITY) throw RangeError. Actual: ' + (new Array(Number.POSITIVE_INFINITY)));
@@ -34,7 +32,6 @@ try {
   );
 }
 
-//CHECK#3
 try {
   new Array(Number.NEGATIVE_INFINITY);
   throw new Test262Error('#3.1: new Array(Number.NEGATIVE_INFINITY) throw RangeError. Actual: ' + (new Array(Number.NEGATIVE_INFINITY)));

js/src/tests/test262/built-ins/Array/length/S15.4.2.2_A2.2_T3.js

@@ -10,7 +10,6 @@ es5id: 15.4.2.2_A2.2_T3
 description: Use try statement. len = 1.5, Number.MAX_VALUE, Number.MIN_VALUE
 ---*/
 
-//CHECK#1
 try {
   new Array(1.5);
   throw new Test262Error('#1.1: new Array(1.5) throw RangeError. Actual: ' + (new Array(1.5)));
@@ -22,7 +21,6 @@ try {
   );
 }
 
-//CHECK#2
 try {
   new Array(Number.MAX_VALUE);
   throw new Test262Error('#2.1: new Array(Number.MAX_VALUE) throw RangeError. Actual: ' + (new Array(Number.MAX_VALUE)));
@@ -34,7 +32,6 @@ try {
   );
 }
 
-//CHECK#3
 try {
   new Array(Number.MIN_VALUE);
   throw new Test262Error('#3.1: new Array(Number.MIN_VALUE) throw RangeError. Actual: ' + (new Array(Number.MIN_VALUE)));

js/src/tests/test262/built-ins/Array/length/S15.4.5.1_A1.1_T1.js

@@ -8,7 +8,6 @@ es5id: 15.4.5.1_A1.1_T1
 description: length in [4294967296, -1, 1.5]
 ---*/
 
-//CHECK#1
 try {
   var x = [];
   x.length = 4294967296;
@@ -21,7 +20,6 @@ try {
   );
 }
 
-//CHECK#2
 try {
   x = [];
   x.length = -1;
@@ -34,7 +32,6 @@ try {
   );
 }
 
-//CHECK#3
 try {
   x = [];
   x.length = 1.5;

js/src/tests/test262/built-ins/Array/length/S15.4.5.1_A1.1_T2.js

@@ -8,7 +8,6 @@ es5id: 15.4.5.1_A1.1_T2
 description: length in [NaN, Infinity, -Infinity, undefined]
 ---*/
 
-//CHECK#1
 try {
   var x = [];
   x.length = NaN;
@@ -21,7 +20,6 @@ try {
   );
 }
 
-//CHECK#2
 try {
   x = [];
   x.length = Number.POSITIVE_INFINITY;
@@ -34,7 +32,6 @@ try {
   );
 }
 
-//CHECK#3
 try {
   x = [];
   x.length = Number.NEGATIVE_INFINITY;
@@ -47,7 +44,6 @@ try {
   );
 }
 
-//CHECK#4
 try {
   x = [];
   x.length = undefined;

js/src/tests/test262/built-ins/Array/length/S15.4.5.1_A1.2_T1.js

@@ -12,12 +12,10 @@ es5id: 15.4.5.1_A1.2_T1
 description: Change length of array
 ---*/
 
-//CHECK#1
 var x = [0, , 2, , 4];
 x.length = 4;
 assert.sameValue(x[4], undefined, 'The value of x[4] is expected to equal undefined');
 
-//CHECK#2
 x.length = 3;
 assert.sameValue(x[3], undefined, 'The value of x[3] is expected to equal undefined');
 assert.sameValue(x[2], 2, 'The value of x[2] is expected to be 2');

js/src/tests/test262/built-ins/Array/length/S15.4.5.1_A1.2_T3.js

@@ -12,13 +12,11 @@ es5id: 15.4.5.1_A1.2_T3
 description: Checking an inherited property
 ---*/
 
-//CHECK#1
 Array.prototype[2] = 2;
 var x = [0, 1];
 x.length = 3;
 assert.sameValue(x.hasOwnProperty('2'), false, 'x.hasOwnProperty("2") must return false');
 
-//CHECK#2
 x.length = 2;
 assert.sameValue(x[2], 2, 'The value of x[2] is expected to be 2');
 

js/src/tests/test262/built-ins/Array/length/S15.4.5.1_A1.3_T1.js

@@ -8,32 +8,26 @@ es5id: 15.4.5.1_A1.3_T1
 description: length is object or primitve
 ---*/
 
-//CHECK#1
 var x = [];
 x.length = true;
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#2
 x = [0];
 x.length = null;
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 
-//CHECK#3
 x = [0];
 x.length = new Boolean(false);
 assert.sameValue(x.length, 0, 'The value of x.length is expected to be 0');
 
-//CHECK#4
 x = [];
 x.length = new Number(1);
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#5
 x = [];
 x.length = "1";
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#6
 x = [];
 x.length = new String("1");
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');

js/src/tests/test262/built-ins/Array/length/S15.4.5.1_A1.3_T2.js

@@ -8,7 +8,6 @@ es5id: 15.4.5.1_A1.3_T2
 description: Uint32 use ToNumber and ToPrimitve
 ---*/
 
-//CHECK#1
 var x = [];
 x.length = {
   valueOf: function() {
@@ -17,7 +16,6 @@ x.length = {
 };
 assert.sameValue(x.length, 2, 'The value of x.length is expected to be 2');
 
-//CHECK#2
 x = [];
 x.length = {
   valueOf: function() {
@@ -29,7 +27,6 @@ x.length = {
 };
 assert.sameValue(x.length, 2, 'The value of x.length is expected to be 2');
 
-//CHECK#3
 x = [];
 x.length = {
   valueOf: function() {
@@ -41,7 +38,6 @@ x.length = {
 };
 assert.sameValue(x.length, 2, 'The value of x.length is expected to be 2');
 
-//CHECK#4
 try {
   x = [];
   x.length = {
@@ -58,7 +54,6 @@ catch (e) {
   assert.notSameValue(e, "error", 'The value of e is not "error"');
 }
 
-//CHECK#5
 x = [];
 x.length = {
   toString: function() {
@@ -67,7 +62,6 @@ x.length = {
 };
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#6
 x = [];
 x.length = {
   valueOf: function() {
@@ -79,7 +73,6 @@ x.length = {
 }
 assert.sameValue(x.length, 1, 'The value of x.length is expected to be 1');
 
-//CHECK#7
 try {
   x = [];
   x.length = {
@@ -97,7 +90,6 @@ catch (e) {
   assert.sameValue(e, "error", 'The value of e is expected to be "error"');
 }
 
-//CHECK#8
 try {
   x = [];
   x.length = {

js/src/tests/test262/built-ins/Array/length/S15.4.5.2_A3_T4.js

@@ -12,7 +12,6 @@ description: >
     is an array index
 ---*/
 
-//CHECK#1
 var x = [0, 1, 2];
 x[4294967294] = 4294967294;
 x.length = 2;

js/src/tests/test262/built-ins/Array/prototype/Symbol.unscopables/array-find-from-last.js

@@ -0,0 +1,34 @@
+// |reftest| skip -- array-find-from-last is not supported
+// Copyright (C) 2022 Microsoft. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype-@@unscopables
+description: >
+    Initial value of `Symbol.unscopables` property
+info: |
+    22.1.3.32 Array.prototype [ @@unscopables ]
+
+    ...
+    7. Perform CreateDataProperty(unscopableList, "findLast", true).
+    8. Perform CreateDataProperty(unscopableList, "findLastIndex", true).
+    ...
+
+includes: [propertyHelper.js]
+features: [Symbol.unscopables, array-find-from-last]
+---*/
+
+var unscopables = Array.prototype[Symbol.unscopables];
+
+assert.sameValue(Object.getPrototypeOf(unscopables), null);
+
+assert.sameValue(unscopables.findLast, true, '`findLast` property value');
+verifyEnumerable(unscopables, 'findLast');
+verifyWritable(unscopables, 'findLast');
+verifyConfigurable(unscopables, 'findLast');
+
+assert.sameValue(unscopables.findLastIndex, true, '`findLastIndex` property value');
+verifyEnumerable(unscopables, 'findLastIndex');
+verifyWritable(unscopables, 'findLastIndex');
+verifyConfigurable(unscopables, 'findLastIndex');
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/Symbol.unscopables/array-grouping.js

@@ -0,0 +1,34 @@
+// |reftest| skip -- array-grouping is not supported
+// Copyright (C) 2022 Chengzhong Wu. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype-@@unscopables
+description: >
+    Initial value of `Symbol.unscopables` property
+info: |
+    22.1.3.32 Array.prototype [ @@unscopables ]
+
+    ...
+    10. Perform ! CreateDataPropertyOrThrow(unscopableList, "groupBy", true).
+    11. Perform ! CreateDataPropertyOrThrow(unscopableList, "groupByToMap", true).
+    ...
+
+includes: [propertyHelper.js]
+features: [Symbol.unscopables, array-grouping]
+---*/
+
+var unscopables = Array.prototype[Symbol.unscopables];
+
+assert.sameValue(Object.getPrototypeOf(unscopables), null);
+
+assert.sameValue(unscopables.groupBy, true, '`groupBy` property value');
+verifyEnumerable(unscopables, 'groupBy');
+verifyWritable(unscopables, 'groupBy');
+verifyConfigurable(unscopables, 'groupBy');
+
+assert.sameValue(unscopables.groupByToMap, true, '`groupByToMap` property value');
+verifyEnumerable(unscopables, 'groupByToMap');
+verifyWritable(unscopables, 'groupByToMap');
+verifyConfigurable(unscopables, 'groupByToMap');
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/Symbol.unscopables/value.js

@@ -1,4 +1,3 @@
-// |reftest| skip -- array-find-from-last is not supported
 // Copyright (C) 2015 Mike Pennisi. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
@@ -14,17 +13,16 @@ info: |
     4. Perform CreateDataProperty(unscopableList, "fill", true).
     5. Perform CreateDataProperty(unscopableList, "find", true).
     6. Perform CreateDataProperty(unscopableList, "findIndex", true).
-    7. Perform CreateDataProperty(unscopableList, "findLast", true).
+    7. Perform CreateDataProperty(unscopableList, "flat", true).
-    8. Perform CreateDataProperty(unscopableList, "findLastIndex", true).
+    8. Perform CreateDataProperty(unscopableList, "flatMap", true).
-    9. Perform CreateDataProperty(unscopableList, "flat", true).
+    9. Perform CreateDataProperty(unscopableList, "includes", true).
-    10. Perform CreateDataProperty(unscopableList, "flatMap", true).
+    10. Perform CreateDataProperty(unscopableList, "keys", true).
-    11. Perform CreateDataProperty(unscopableList, "includes", true).
+    11. Perform CreateDataProperty(unscopableList, "values", true).
-    12. Perform CreateDataProperty(unscopableList, "keys", true).
+    12. Assert: Each of the above calls returns true.
-    13. Perform CreateDataProperty(unscopableList, "values", true).
+    13. Return unscopableList.
-    14. Assert: Each of the above calls returns true.
+
-    15. Return unscopableList.
 includes: [propertyHelper.js]
-features: [Symbol.unscopables, array-find-from-last]
+features: [Symbol.unscopables]
 ---*/
 
 var unscopables = Array.prototype[Symbol.unscopables];
@@ -56,17 +54,6 @@ verifyEnumerable(unscopables, 'findIndex');
 verifyWritable(unscopables, 'findIndex');
 verifyConfigurable(unscopables, 'findIndex');
 
-
-assert.sameValue(unscopables.findLast, true, '`findLast` property value');
-verifyEnumerable(unscopables, 'findLast');
-verifyWritable(unscopables, 'findLast');
-verifyConfigurable(unscopables, 'findLast');
-
-assert.sameValue(unscopables.findLastIndex, true, '`findLastIndex` property value');
-verifyEnumerable(unscopables, 'findLastIndex');
-verifyWritable(unscopables, 'findLastIndex');
-verifyConfigurable(unscopables, 'findLastIndex');
-
 assert.sameValue(unscopables.flat, true, '`flat` property value');
 verifyEnumerable(unscopables, 'flat');
 verifyWritable(unscopables, 'flat');

js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_large-typed-array.js

@@ -16,22 +16,13 @@ function concatTypedArray(type, elems, modulo) {
     ta_by_len[i] = items[i] = modulo === false ? i : elems % modulo;
   }
   var ta = new type(items);
-  assert(
+  assert.compareArray([].concat(ta, ta), [ta, ta]);
-    compareArray([].concat(ta, ta), [ta, ta]),
-    'compareArray([].concat(ta, ta), [ta, ta]) must return true'
-  );
   ta[Symbol.isConcatSpreadable] = true;
-  assert.compareArray([].concat(ta), items, '[].concat(new type(items)) returns items');
+  assert.compareArray([].concat(ta), items);
 
-  assert(
+  assert.compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]);
-    compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]),
-    'compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]) must return true'
-  );
   ta_by_len[Symbol.isConcatSpreadable] = true;
-  assert(
+  assert.compareArray([].concat(ta_by_len), items);
-    compareArray([].concat(ta_by_len), items),
-    'compareArray([].concat(ta_by_len), items) must return true'
-  );
 
   // TypedArray with fake `length`.
   ta = new type(1);
@@ -43,7 +34,7 @@ function concatTypedArray(type, elems, modulo) {
     value: 4000
   });
   ta[Symbol.isConcatSpreadable] = true;
-  assert.compareArray([].concat(ta), expected, '[].concat(new type(1)) returns expected');
+  assert.compareArray([].concat(ta), expected);
 }
 
 var max = [Math.pow(2, 8), Math.pow(2, 16), Math.pow(2, 32), false, false];

js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_small-typed-array.js

@@ -16,22 +16,13 @@ function concatTypedArray(type, elems, modulo) {
     ta_by_len[i] = items[i] = modulo === false ? i : elems % modulo;
   }
   var ta = new type(items);
-  assert(
+  assert.compareArray([].concat(ta, ta), [ta, ta]);
-    compareArray([].concat(ta, ta), [ta, ta]),
-    'compareArray([].concat(ta, ta), [ta, ta]) must return true'
-  );
   ta[Symbol.isConcatSpreadable] = true;
-  assert.compareArray([].concat(ta), items, '[].concat(new type(items)) returns items');
+  assert.compareArray([].concat(ta), items);
 
-  assert(
+  assert.compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]);
-    compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]),
-    'compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]) must return true'
-  );
   ta_by_len[Symbol.isConcatSpreadable] = true;
-  assert(
+  assert.compareArray([].concat(ta_by_len), items);
-    compareArray([].concat(ta_by_len), items),
-    'compareArray([].concat(ta_by_len), items) must return true'
-  );
 
   // TypedArray with fake `length`.
   ta = new type(1);
@@ -43,7 +34,7 @@ function concatTypedArray(type, elems, modulo) {
     value: 4000
   });
   ta[Symbol.isConcatSpreadable] = true;
-  assert.compareArray([].concat(ta), expected, '[].concat(new type(1)) returns expected');
+  assert.compareArray([].concat(ta), expected);
 }
 var max = [Math.pow(2, 8), Math.pow(2, 16), Math.pow(2, 32), false, false];
 [

js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_T1.js

@@ -16,7 +16,6 @@ var y = new Array(0, 1);
 var z = new Array(2, 3, 4);
 var arr = x.concat(y, z);
 
-//CHECK#0
 arr.getClass = Object.prototype.toString;
 assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
 assert.sameValue(arr[0], 0, 'The value of arr[0] is expected to be 0');

js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_T2.js

@@ -16,7 +16,6 @@ var y = new Object();
 var z = new Array(1, 2);
 var arr = x.concat(y, z, -1, true, "NaN");
 
-//CHECK#0
 arr.getClass = Object.prototype.toString;
 assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
 assert.sameValue(arr[0], 0, 'The value of arr[0] is expected to be 0');

js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_T3.js

@@ -14,7 +14,6 @@ description: Checking this algorithm with no items
 var x = [0, 1];
 var arr = x.concat();
 
-//CHECK#0
 arr.getClass = Object.prototype.toString;
 assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
 assert.sameValue(arr[0], 0, 'The value of arr[0] is expected to be 0');

js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A1_T4.js

@@ -14,7 +14,6 @@ description: Checking this algorithm, items are [], [,]
 var x = [, 1];
 var arr = x.concat([], [, ]);
 
-//CHECK#0
 arr.getClass = Object.prototype.toString;
 assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
 assert.sameValue(arr[0], undefined, 'The value of arr[0] is expected to equal undefined');

js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A2_T1.js

@@ -16,7 +16,6 @@ var y = new Object();
 var z = new Array(1, 2);
 var arr = x.concat(y, z, -1, true, "NaN");
 
-//CHECK#0
 arr.getClass = Object.prototype.toString;
 assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
 assert.sameValue(arr[0], x, 'The value of arr[0] is expected to equal the value of x');

js/src/tests/test262/built-ins/Array/prototype/concat/S15.4.4.4_A2_T2.js

@@ -14,7 +14,6 @@ var x = {};
 x.concat = Array.prototype.concat;
 var arr = x.concat();
 
-//CHECK#0
 arr.getClass = Object.prototype.toString;
 assert.sameValue(arr.getClass(), "[object Array]", 'arr.getClass() must return "[object Array]"');
 assert.sameValue(arr[0], x, 'The value of arr[0] is expected to equal the value of x');

js/src/tests/test262/built-ins/Array/prototype/copyWithin/coerced-values-target.js

@@ -55,4 +55,9 @@ assert.compareArray(
   '[0, 1, 2, 3].copyWithin(1.5, 0) must return [0, 0, 1, 2]'
 );
 
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin({}, 1), [1, 2, 3, 3],
+  '[0, 1, 2, 3].copyWithin({}, 1) must return [1, 2, 3, 3]'
+);
+
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/copyWithin/non-negative-target-and-start.js

@@ -31,20 +31,24 @@ info: |
 includes: [compareArray.js]
 ---*/
 
-assert(compareArray(
+assert.compareArray(
-  ['a', 'b', 'c', 'd', 'e', 'f'].copyWithin(0, 0), ['a', 'b', 'c', 'd', 'e', 'f']
+  ['a', 'b', 'c', 'd', 'e', 'f'].copyWithin(0, 0),
-), 'compareArray( ["a", "b", "c", "d", "e", "f"].copyWithin(0, 0), ["a", "b", "c", "d", "e", "f"] ) must return true');
+  ['a', 'b', 'c', 'd', 'e', 'f']
+);
 
-assert(compareArray(
+assert.compareArray(
-  ['a', 'b', 'c', 'd', 'e', 'f'].copyWithin(0, 2), ['c', 'd', 'e', 'f', 'e', 'f']
+  ['a', 'b', 'c', 'd', 'e', 'f'].copyWithin(0, 2),
-), 'compareArray( ["a", "b", "c", "d", "e", "f"].copyWithin(0, 2), ["c", "d", "e", "f", "e", "f"] ) must return true');
+  ['c', 'd', 'e', 'f', 'e', 'f']
+);
 
-assert(compareArray(
+assert.compareArray(
-  ['a', 'b', 'c', 'd', 'e', 'f'].copyWithin(3, 0), ['a', 'b', 'c', 'a', 'b', 'c']
+  ['a', 'b', 'c', 'd', 'e', 'f'].copyWithin(3, 0),
-), 'compareArray( ["a", "b", "c", "d", "e", "f"].copyWithin(3, 0), ["a", "b", "c", "a", "b", "c"] ) must return true');
+  ['a', 'b', 'c', 'a', 'b', 'c']
+);
 
-assert(compareArray(
+assert.compareArray(
-  [0, 1, 2, 3, 4, 5].copyWithin(1, 4), [0, 4, 5, 3, 4, 5]
+  [0, 1, 2, 3, 4, 5].copyWithin(1, 4),
-), 'compareArray( [0, 1, 2, 3, 4, 5].copyWithin(1, 4), [0, 4, 5, 3, 4, 5] ) must return true');
+  [0, 4, 5, 3, 4, 5]
+);
 
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/every/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,74 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.every
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.every.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(2 * BPE);
+        expectedElements = [0, 0];
+        expectedIndices = [0, 1];
+        expectedArrays = [sample, sample];
+      } catch (_) {
+        expectedElements = [0, 0, 0];
+        expectedIndices = [0, 1, 2];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return true;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (shrink)');
+  assert.compareArray(indices, expectedIndices, 'indices (shrink)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (shrink)');
+  assert.sameValue(result, true, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.every.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return true;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.sameValue(result, true, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/every/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/filter/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,74 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.filter
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.filter.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(2 * BPE);
+        expectedElements = [0, 0];
+        expectedIndices = [0, 1];
+        expectedArrays = [sample, sample];
+      } catch (_) {
+        expectedElements = [0, 0, 0];
+        expectedIndices = [0, 1, 2];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return true;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (shrink)');
+  assert.compareArray(indices, expectedIndices, 'indices (shrink)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (shrink)');
+  assert.compareArray(result, expectedElements, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.filter.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return true;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.compareArray(result, expectedElements, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/filter/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/find/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,76 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.find
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var finalElement, expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.find.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(2 * BPE);
+        finalElement = undefined;
+        expectedElements = [0, 0];
+        expectedIndices = [0, 1];
+        expectedArrays = [sample, sample];
+      } catch (_) {
+        finalElement = 0;
+        expectedElements = [0, 0, 0];
+        expectedIndices = [0, 1, 2];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, [0, 0, finalElement], 'elements (shrink)');
+  assert.compareArray(indices, [0, 1, 2], 'indices (shrink)');
+  assert.compareArray(arrays, [sample, sample, sample], 'arrays (shrink)');
+  assert.sameValue(result, undefined, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.find.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.sameValue(result, undefined, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/find/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/findIndex/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,76 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.findindex
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var finalElement, expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.findIndex.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(2 * BPE);
+        finalElement = undefined;
+        expectedElements = [0, 0];
+        expectedIndices = [0, 1];
+        expectedArrays = [sample, sample];
+      } catch (_) {
+        finalElement = 0;
+        expectedElements = [0, 0, 0];
+        expectedIndices = [0, 1, 2];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, [0, 0, finalElement], 'elements (shrink)');
+  assert.compareArray(indices, [0, 1, 2], 'indices (shrink)');
+  assert.compareArray(arrays, [sample, sample, sample], 'arrays (shrink)');
+  assert.sameValue(result, -1, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.findIndex.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.sameValue(result, -1, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/findIndex/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/findLast/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,76 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.findlast
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var secondElement, expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.findLast.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(BPE);
+        secondElement = undefined;
+        expectedElements = [0];
+        expectedIndices = [0];
+        expectedArrays = [sample];
+      } catch (_) {
+        secondElement = 0;
+        expectedElements = [0, 0, 0];
+        expectedIndices = [2, 1, 0];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, [0, secondElement, 0], 'elements (shrink)');
+  assert.compareArray(indices, [2, 1, 0], 'indices (shrink)');
+  assert.compareArray(arrays, [sample, sample, sample], 'arrays (shrink)');
+  assert.sameValue(result, undefined, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.findLast.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.sameValue(result, undefined, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/findLast/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/findLastIndex/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,76 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.findlastindex
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var secondElement, expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.findLastIndex.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(BPE);
+        secondElement = undefined;
+        expectedElements = [0];
+        expectedIndices = [0];
+        expectedArrays = [sample];
+      } catch (_) {
+        secondElement = 0;
+        expectedElements = [0, 0, 0];
+        expectedIndices = [2, 1, 0];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, [0, secondElement, 0], 'elements (shrink)');
+  assert.compareArray(indices, [2, 1, 0], 'indices (shrink)');
+  assert.compareArray(arrays, [sample, sample, sample], 'arrays (shrink)');
+  assert.sameValue(result, -1, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.findLastIndex.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+    return false;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.sameValue(result, -1, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/findLastIndex/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/forEach/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,72 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.forEach
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.forEach.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(2 * BPE);
+        expectedElements = [0, 0];
+        expectedIndices = [0, 1];
+        expectedArrays = [sample, sample];
+      } catch (_) {
+        expectedElements = [0, 0, 0];
+        expectedIndices = [0, 1, 2];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (shrink)');
+  assert.compareArray(indices, expectedIndices, 'indices (shrink)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (shrink)');
+  assert.sameValue(result, undefined, 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.forEach.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.sameValue(result, undefined, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/forEach/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A1.1_T1.js

@@ -7,13 +7,11 @@ esid: sec-array.prototype.join
 description: Checking this use new Array() and []
 ---*/
 
-//CHECK#1
 var x = new Array();
 if (x.join() !== "") {
   throw new Test262Error('#1: x = new Array(); x.join() === "". Actual: ' + (x.join()));
 }
 
-//CHECK#2
 x = [];
 x[0] = 1;
 x.length = 0;

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A1.2_T1.js

@@ -7,13 +7,11 @@ esid: sec-array.prototype.join
 description: Checking this use new Array() and []
 ---*/
 
-//CHECK#1
 var x = new Array(0, 1, 2, 3);
 if (x.join() !== "0,1,2,3") {
   throw new Test262Error('#1: x = new Array(0,1,2,3); x.join() === "0,1,2,3". Actual: ' + (x.join()));
 }
 
-//CHECK#2
 x = [];
 x[0] = 0;
 x[3] = 3;
@@ -21,7 +19,6 @@ if (x.join() !== "0,,,3") {
   throw new Test262Error('#2: x = []; x[0] = 0; x[3] = 3; x.join() === "0,,,3". Actual: ' + (x.join()));
 }
 
-//CHECK#3
 x = [];
 x[0] = 0;
 if (x.join() !== "0") {

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A1.2_T2.js

@@ -7,13 +7,11 @@ esid: sec-array.prototype.join
 description: Checking this use new Array() and []
 ---*/
 
-//CHECK#1
 var x = new Array(0, 1, 2, 3);
 if (x.join(undefined) !== "0,1,2,3") {
   throw new Test262Error('#1: x = new Array(0,1,2,3); x.join(undefined) === "0,1,2,3". Actual: ' + (x.join(undefined)));
 }
 
-//CHECK#2
 x = [];
 x[0] = 0;
 x[3] = 3;
@@ -21,7 +19,6 @@ if (x.join(undefined) !== "0,,,3") {
   throw new Test262Error('#2: x = []; x[0] = 0; x[3] = 3; x.join(undefined) === "0,,,3". Actual: ' + (x.join(undefined)));
 }
 
-//CHECK#3
 x = [];
 x[0] = 0;
 if (x.join(undefined) !== "0") {

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A1.3_T1.js

@@ -7,21 +7,18 @@ esid: sec-array.prototype.join
 description: Checking this use new Array() and []
 ---*/
 
-//CHECK#1
 var x = [];
 x[0] = undefined;
 if (x.join() !== "") {
   throw new Test262Error('#1: x = []; x[0] = undefined; x.join() === "". Actual: ' + (x.join()));
 }
 
-//CHECK#2
 x = [];
 x[0] = null;
 if (x.join() !== "") {
   throw new Test262Error('#2: x = []; x[0] = null; x.join() === "". Actual: ' + (x.join()));
 }
 
-//CHECK#3
 x = Array(undefined, 1, null, 3);
 if (x.join() !== ",1,,3") {
   throw new Test262Error('#3: x = Array(undefined,1,null,3); x.join() === ",1,,3". Actual: ' + (x.join()));

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T1.js

@@ -15,34 +15,28 @@ obj.join = Array.prototype.join;
 if (obj.length !== undefined) {
   throw new Test262Error('#0: var obj = {}; obj.length === undefined. Actual: ' + (obj.length));
 } else {
-  //CHECK#1
   if (obj.join() !== "") {
     throw new Test262Error('#1: var obj = {}; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
   }
-  //CHECK#2
   if (obj.length !== undefined) {
     throw new Test262Error('#2: var obj = {}; obj.join = Array.prototype.join; obj.join(); obj.length === undefined. Actual: ' + (obj.length));
   }
 }
 
-//CHECK#3
 obj.length = undefined;
 if (obj.join() !== "") {
   throw new Test262Error('#3: var obj = {}; obj.length = undefined; obj.join = Array.prototype.join; obj.join() === ". Actual: ' + (obj.join()));
 }
 
-//CHECK#4
 if (obj.length !== undefined) {
   throw new Test262Error('#4: var obj = {}; obj.length = undefined; obj.join = Array.prototype.join; obj.join(); obj.length === undefined. Actual: ' + (obj.length));
 }
 
-//CHECK#5
 obj.length = null
 if (obj.join() !== "") {
   throw new Test262Error('#5: var obj = {}; obj.length = null; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
 }
 
-//CHECK#6
 if (obj.length !== null) {
   throw new Test262Error('#6: var obj = {}; obj.length = null; obj.join = Array.prototype.join; obj.join(); obj.length === null. Actual: ' + (obj.length));
 }

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T2.js

@@ -12,33 +12,27 @@ description: If ToUint32(length) is zero, return the empty string
 var obj = {};
 obj.join = Array.prototype.join;
 
-//CHECK#1
 obj.length = NaN;
 if (obj.join() !== "") {
   throw new Test262Error('#1: var obj = {}; obj.length = NaN; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
 }
 
-//CHECK#2
 assert.sameValue(obj.length, NaN, "obj.length is NaN");
 
-//CHECK#5
 obj.length = Number.NEGATIVE_INFINITY;
 if (obj.join() !== "") {
   throw new Test262Error('#5: var obj = {}; obj.length = Number.NEGATIVE_INFINITY; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
 }
 
-//CHECK#6
 if (obj.length !== Number.NEGATIVE_INFINITY) {
   throw new Test262Error('#6: var obj = {}; obj.length = Number.NEGATIVE_INFINITY; obj.join = Array.prototype.join; obj.join(); obj.length === Number.NEGATIVE_INFINITY. Actual: ' + (obj.length));
 }
 
-//CHECK#7
 obj.length = -0;
 if (obj.join() !== "") {
   throw new Test262Error('#7: var obj = {}; obj.length = -0; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
 }
 
-//CHECK#8
 if (obj.length !== -0) {
   throw new Test262Error('#8: var obj = {}; obj.length = -0; obj.join = Array.prototype.join; obj.join(); obj.length === 0. Actual: ' + (obj.length));
 } else {
@@ -47,25 +41,21 @@ if (obj.length !== -0) {
   }
 }
 
-//CHECK#9
 obj.length = 0.5;
 if (obj.join() !== "") {
   throw new Test262Error('#9: var obj = {}; obj.length = 0.5; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
 }
 
-//CHECK#10
 if (obj.length !== 0.5) {
   throw new Test262Error('#10: var obj = {}; obj.length = 0.5; obj.join = Array.prototype.join; obj.join(); obj.length === 0.5. Actual: ' + (obj.length));
 }
 
-//CHECK#11
 var x = new Number(0);
 obj.length = x;
 if (obj.join() !== "") {
   throw new Test262Error('#11: var x = new Number(0); var obj = {}; obj.length = x; obj.join = Array.prototype.join; obj.join() === "". Actual: ' + (obj.join()));
 }
 
-//CHECK#12
 if (obj.length !== x) {
   throw new Test262Error('#12: var x = new Number(0); var obj = {}; obj.length = x; obj.join = Array.prototype.join; obj.join(); obj.length === x. Actual: ' + (obj.length));
 }

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T3.js

@@ -12,13 +12,11 @@ description: If ToUint32(length) is zero, return the empty string
 var obj = {};
 obj.join = Array.prototype.join;
 
-//CHECK#1
 obj.length = 4.5;
 if (obj.join() !== ",,,") {
   throw new Test262Error('#1: var obj = {}; obj.length = 4.5; obj.join = Array.prototype.join; obj.join() === ",,,". Actual: ' + (obj.join()));
 }
 
-//CHECK#2
 obj[0] = undefined;
 obj[1] = 1;
 obj[2] = null;
@@ -26,7 +24,6 @@ if (obj.join() !== ",1,,") {
   throw new Test262Error('#1: var obj = {}; obj.length = 4.5; obj[0] = undefined; obj[1] = 1; obj[2] = null; obj.join = Array.prototype.join; obj.join() === ",1,,". Actual: ' + (obj.join()));
 }
 
-//CHECK#3
 if (obj.length !== 4.5) {
   throw new Test262Error('#1: var obj = {}; obj.length = 4.5; obj[0] = undefined; obj[1] = 1; obj[2] = null; obj.join = Array.prototype.join; obj.join(); obj.length === 4.5. Actual: ' + (obj.length));
 }
@@ -34,14 +31,12 @@ if (obj.length !== 4.5) {
 var obj = {};
 obj.join = Array.prototype.join;
 
-//CHECK#4
 var x = new Number(4.5);
 obj.length = x;
 if (obj.join() !== ",,,") {
   throw new Test262Error('#4: var obj = {}; var x = new Number(4.5); obj.length = x; obj.join = Array.prototype.join; obj.join() === ",,,". Actual: ' + (obj.join()));
 }
 
-//CHECK#5
 obj[0] = undefined;
 obj[1] = 1;
 obj[2] = null;
@@ -49,7 +44,6 @@ if (obj.join() !== ",1,,") {
   throw new Test262Error('#5: var obj = {}; var x = new Number(4.5); obj.length = x; obj[0] = undefined; obj[1] = 1; obj[2] = null; obj.join = Array.prototype.join; obj.join() === ",1,,". Actual: ' + (obj.join()));
 }
 
-//CHECK#6
 if (obj.length !== x) {
   throw new Test262Error('#6: var obj = {}; var x = new Number(4.5); obj.length = x; obj[0] = undefined; obj[1] = 1; obj[2] = null; obj.join = Array.prototype.join; obj.join(); obj.length === x. Actual: ' + (obj.length));
 }

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T4.js

@@ -14,123 +14,82 @@ description: >
 var obj = {};
 obj.join = Array.prototype.join;
 
-//CHECK#1
 obj.length = {
-  valueOf: function() {
+  valueOf() {
     return 3
   }
 };
-if (obj.join() !== ",,") {
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
-  throw new Test262Error('#1: obj.length = {valueOf: function() {return 3}}  obj.join() === ",,". Actual: ' + (obj.join()));
-}
 
-//CHECK#2
 obj.length = {
-  valueOf: function() {
+  valueOf() {
     return 3
   },
-  toString: function() {
+  toString() {
     return 2
   }
 };
-if (obj.join() !== ",,") {
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
-  throw new Test262Error('#2: obj.length = {valueOf: function() {return 3}, toString: function() {return 2}}  obj.join() === ",,". Actual: ' + (obj.join()));
-}
 
-//CHECK#3
 obj.length = {
-  valueOf: function() {
+  valueOf() {
     return 3
   },
-  toString: function() {
+  toString() {
     return {}
   }
 };
-if (obj.join() !== ",,") {
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
-  throw new Test262Error('#3: obj.length = {valueOf: function() {return 3}, toString: function() {return {}}}  obj.join() === ",,". Actual: ' + (obj.join()));
-}
 
-//CHECK#4
+obj.length = {
-try {
+  valueOf() {
-  obj.length = {
-    valueOf: function() {
     return 3
   },
-    toString: function() {
+  toString() {
-      throw "error"
+    throw new Test262Error();
   }
-  };
+};
-  if (obj.join() !== ",,") {
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
-    throw new Test262Error('#4.1: obj.length = {valueOf: function() {return 3}, toString: function() {throw "error"}}; obj.join() === ",". Actual: ' + (obj.join()));
-  }
-}
-catch (e) {
-  if (e === "error") {
-    throw new Test262Error('#4.2: obj.length = {valueOf: function() {return 3}, toString: function() {throw "error"}}; obj.join() not throw "error"');
-  } else {
-    throw new Test262Error('#4.3: obj.length = {valueOf: function() {return 3}, toString: function() {throw "error"}}; obj.join() not throw Error. Actual: ' + (e));
-  }
-}
 
-//CHECK#5
 obj.length = {
-  toString: function() {
+  toString() {
     return 2
   }
 };
-if (obj.join() !== ",") {
+assert.sameValue(obj.join(), ",", 'obj.join() must return ","');
-  throw new Test262Error('#5: obj.length = {toString: function() {return 2}}  obj.join() === ",". Actual: ' + (obj.join()));
-}
 
-//CHECK#6
 obj.length = {
-  valueOf: function() {
+  valueOf() {
     return {}
   },
-  toString: function() {
+  toString() {
     return 2
   }
 }
-if (obj.join() !== ",") {
+assert.sameValue(obj.join(), ",", 'obj.join() must return ","');
-  throw new Test262Error('#6: obj.length = {valueOf: function() {return {}}, toString: function() {return 2}}  obj.join() === ",". Actual: ' + (obj.join()));
-}
 
-//CHECK#7
+assert.throws(Test262Error, () => {
-try {
   obj.length = {
-    valueOf: function() {
+    valueOf() {
-      throw "error"
+      throw new Test262Error();
     },
-    toString: function() {
+    toString() {
       return 2
     }
   };
   obj.join();
-  throw new Test262Error('#7.1: obj.length = {valueOf: function() {throw "error"}, toString: function() {return 2}}; obj.join() throw "error". Actual: ' + (obj.join()));
+});
-}
-catch (e) {
-  if (e !== "error") {
-    throw new Test262Error('#7.2: obj.length = {valueOf: function() {throw "error"}, toString: function() {return 2}}; obj.join() throw "error". Actual: ' + (e));
-  }
-}
 
-//CHECK#8
+assert.throws(TypeError, () => {
-try {
   obj.length = {
-    valueOf: function() {
+    valueOf() {
       return {}
     },
-    toString: function() {
+    toString() {
       return {}
     }
   };
   obj.join();
-  throw new Test262Error('#8.1: obj.length = {valueOf: function() {return {}}, toString: function() {return {}}}  obj.join() throw TypeError. Actual: ' + (obj.join()));
+});
-}
-catch (e) {
-  if ((e instanceof TypeError) !== true) {
-    throw new Test262Error('#8,2: obj.length = {valueOf: function() {return {}}, toString: function() {return {}}}  obj.join() throw TypeError. Actual: ' + (e));
-  }
-}
 
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A3.1_T1.js

@@ -9,44 +9,36 @@ description: >
     undefind, NaN]
 ---*/
 
-//CHECK#0
 var x = new Array(0, 1, 2, 3);
 if (x.join("") !== "0123") {
   throw new Test262Error('#0: x = new Array(0,1,2,3); x.join("") === "0123". Actual: ' + (x.join("")));
 }
 
-//CHECK#1
 x = new Array(0, 1, 2, 3);
 if (x.join("\\") !== "0\\1\\2\\3") {
   throw new Test262Error('#1: x = new Array(0,1,2,3); x.join("\\") === "0\\1\\2\\3". Actual: ' + (x.join("\\")));
 }
 
-//CHECK#2
 if (x.join("&") !== "0&1&2&3") {
   throw new Test262Error('#2: x = new Array(0,1,2,3); x.join("&") === "0&1&2&3". Actual: ' + (x.join("&")));
 }
 
-//CHECK#3
 if (x.join(true) !== "0true1true2true3") {
   throw new Test262Error('#3: x = new Array(0,1,2,3); x.join(true) === "0true1true2true3". Actual: ' + (x.join(true)));
 }
 
-//CHECK#4
 if (x.join(Infinity) !== "0Infinity1Infinity2Infinity3") {
   throw new Test262Error('#4: x = new Array(0,1,2,3); x.join(Infinity) === "0Infinity1Infinity2Infinity3". Actual: ' + (x.join(Infinity)));
 }
 
-//CHECK#5
 if (x.join(null) !== "0null1null2null3") {
   throw new Test262Error('#3: 5 = new Array(0,1,2,3); x.join(null) === "0null1null2null3". Actual: ' + (x.join(null)));
 }
 
-//CHECK#6
 if (x.join(undefined) !== "0,1,2,3") {
   throw new Test262Error('#6: x = new Array(0,1,2,3); x.join(undefined) === "0,1,2,3". Actual: ' + (x.join(undefined)));
 }
 
-//CHECK#7
 if (x.join(NaN) !== "0NaN1NaN2NaN3") {
   throw new Test262Error('#7: x = new Array(0,1,2,3); x.join(NaN) === "0NaN1NaN2NaN3". Actual: ' + (x.join(NaN)));
 }

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A3.1_T2.js

@@ -10,139 +10,137 @@ description: >
 ---*/
 
 var x = new Array(0, 1, 2, 3);
-//CHECK#1
 var object = {
-  valueOf: function() {
+  valueOf() {
     return "+"
   }
 };
-if (x.join(object) !== "0[object Object]1[object Object]2[object Object]3") {
-  throw new Test262Error('#1: var object = {valueOf: function() {return "+"}}; x.join(object) === "0[object Object]1[object Object]2[object Object]3". Actual: ' + (x.join(object)));
-}
 
-//CHECK#2
+assert.sameValue(
+  x.join(object),
+  "0[object Object]1[object Object]2[object Object]3",
+  'x.join({valueOf() {return "+"}}) must return "0[object Object]1[object Object]2[object Object]3"'
+);
+
 var object = {
-  valueOf: function() {
+  valueOf() {
     return "+"
   },
-  toString: function() {
+  toString() {
     return "*"
   }
 };
-if (x.join(object) !== "0*1*2*3") {
-  throw new Test262Error('#2: var object = {valueOf: function() {return "+"}, toString: function() {return "*"}}; x.join(object) === "0*1*2*3". Actual: ' + (x.join(object)));
-}
 
-//CHECK#3
+assert.sameValue(
+  x.join(object),
+  "0*1*2*3",
+  'x.join("{valueOf() {return "+"}, toString() {return "*"}}) must return "0*1*2*3"'
+);
+
 var object = {
-  valueOf: function() {
+  valueOf() {
     return "+"
   },
-  toString: function() {
+  toString() {
     return {}
   }
 };
-if (x.join(object) !== "0+1+2+3") {
-  throw new Test262Error('#3: var object = {valueOf: function() {return "+"}, toString: function() {return {}}}; x.join(object) === "0+1+2+3". Actual: ' + (x.join(object)));
-}
 
-//CHECK#4
+assert.sameValue(
+  x.join(object),
+  "0+1+2+3",
+  'x.join({valueOf() {return "+"}, toString() {return {}}}) must return "0+1+2+3"'
+);
+
 try {
   var object = {
-    valueOf: function() {
+    valueOf() {
       throw "error"
     },
-    toString: function() {
+    toString() {
       return "*"
     }
   };
-  if (x.join(object) !== "0*1*2*3") {
+
-    throw new Test262Error('#4.1: var object = {valueOf: function() {throw "error"}, toString: function() {return "*"}}; x.join(object) === "0*1*2*3". Actual: ' + (x.join(object)));
+  assert.sameValue(
-  }
+    x.join(object),
+    "0*1*2*3",
+    'x.join("{valueOf() {throw "error"}, toString() {return "*"}}) must return "0*1*2*3"'
+  );
 }
 catch (e) {
-  if (e === "error") {
+  assert.notSameValue(e, "error", 'The value of e is not "error"');
-    throw new Test262Error('#4.2: var object = {valueOf: function() {throw "error"}, toString: function() {return "*"}}; x.join(object) not throw "error"');
-  } else {
-    throw new Test262Error('#4.3: var object = {valueOf: function() {throw "error"}, toString: function() {return "*"}}; x.join(object) not throw Error. Actual: ' + (e));
-  }
 }
 
-//CHECK#5
 var object = {
-  toString: function() {
+  toString() {
     return "*"
   }
 };
-if (x.join(object) !== "0*1*2*3") {
+assert.sameValue(x.join(object), "0*1*2*3", 'x.join({toString() {return "*"}}) must return "0*1*2*3"');
-  throw new Test262Error('#5: var object = {toString: function() {return "*"}}; x.join(object) === "0*1*2*3". Actual: ' + (x.join(object)));
-}
 
-//CHECK#6
 var object = {
-  valueOf: function() {
+  valueOf() {
     return {}
   },
-  toString: function() {
+  toString() {
     return "*"
   }
 }
-if (x.join(object) !== "0*1*2*3") {
-  throw new Test262Error('#6: var object = {valueOf: function() {return {}}, toString: function() {return "*"}}; x.join(object) === "0*1*2*3". Actual: ' + (x.join(object)));
-}
 
-//CHECK#7
+assert.sameValue(
+  x.join(object),
+  "0*1*2*3",
+  'x.join({valueOf() {return {}}, toString() {return "*"}}) must return "0*1*2*3"'
+);
+
 try {
   var object = {
-    valueOf: function() {
+    valueOf() {
       return "+"
     },
-    toString: function() {
+    toString() {
       throw "error"
     }
   };
   x.join(object);
-  throw new Test262Error('#7.1: var object = {valueOf: function() {return "+"}, toString: function() {throw "error"}}; x.join(object) throw "error". Actual: ' + (x.join(object)));
+  throw new Test262Error('#7.1: var object = {valueOf() {return "+"}, toString() {throw "error"}}; x.join(object) throw "error". Actual: ' + (x.join(object)));
 }
 catch (e) {
-  if (e !== "error") {
+  assert.sameValue(e, "error", 'The value of e is expected to be "error"');
-    throw new Test262Error('#7.2: var object = {valueOf: function() {return "+"}, toString: function() {throw "error"}}; x.join(object) throw "error". Actual: ' + (e));
-  }
 }
 
-//CHECK#8
 try {
   var object = {
-    valueOf: function() {
+    valueOf() {
       return {}
     },
-    toString: function() {
+    toString() {
       return {}
     }
   };
   x.join(object);
-  throw new Test262Error('#8.1: var object = {valueOf: function() {return {}}, toString: function() {return {}}}; x.join(object) throw TypeError. Actual: ' + (x.join(object)));
+  throw new Test262Error('#8.1: var object = {valueOf() {return {}}, toString() {return {}}}; x.join(object) throw TypeError. Actual: ' + (x.join(object)));
 }
 catch (e) {
-  if ((e instanceof TypeError) !== true) {
+  assert.sameValue(
-    throw new Test262Error('#8.2: var object = {valueOf: function() {return {}}, toString: function() {return {}}}; x.join(object) throw TypeError. Actual: ' + (e));
+    e instanceof TypeError,
-  }
+    true,
+    'The result of evaluating (e instanceof TypeError) is expected to be true'
+  );
 }
 
-//CHECK#9
 try {
   var object = {
-    toString: function() {
+    toString() {
       throw "error"
     }
   };
   [].join(object);
-  throw new Test262Error('#9.1: var object = {toString: function() {throw "error"}}; [].join(object) throw "error". Actual: ' + ([].join(object)));
+  throw new Test262Error('#9.1: var object = {toString() {throw "error"}}; [].join(object) throw "error". Actual: ' + ([].join(object)));
 }
 catch (e) {
-  if (e !== "error") {
+  assert.sameValue(e, "error", 'The value of e is expected to be "error"');
-    throw new Test262Error('#9.2: var object = {toString: function() {throw "error"}}; [].join(object) throw "error". Actual: ' + (e));
-  }
 }
 
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A3.2_T1.js

@@ -9,49 +9,41 @@ description: >
     Infinity, null, undefind, NaN]
 ---*/
 
-//CHECK#0
 var x = new Array("", "", "");
 if (x.join("") !== "") {
   throw new Test262Error('#0: var x = new Array("","",""); x.join("") === "". Actual: ' + (x.join("")));
 }
 
-//CHECK#1
 var x = new Array("\\", "\\", "\\");
 if (x.join("\\") !== "\\\\\\\\\\") {
   throw new Test262Error('#1: var x = new Array("\\","\\","\\"); x.join("\\") === "\\\\\\\\\\". Actual: ' + (x.join("\\")));
 }
 
-//CHECK#2
 var x = new Array("&", "&", "&");
 if (x.join("&") !== "&&&&&") {
   throw new Test262Error('#2: var x = new Array("&", "&", "&"); x.join("&") === "&&&&&". Actual: ' + (x.join("&")));
 }
 
-//CHECK#3
 var x = new Array(true, true, true);
 if (x.join() !== "true,true,true") {
   throw new Test262Error('#3: var x = new Array(true,true,true); x.join(true,true,true) === "true,true,true". Actual: ' + (x.join(true, true, true)));
 }
 
-//CHECK#4
 var x = new Array(null, null, null);
 if (x.join() !== ",,") {
   throw new Test262Error('#4: var x = new Array(null,null,null); x.join(null,null,null) === ",,". Actual: ' + (x.join(null, null, null)));
 }
 
-//CHECK#5
 var x = new Array(undefined, undefined, undefined);
 if (x.join() !== ",,") {
   throw new Test262Error('#5: var x = new Array(undefined,undefined,undefined); x.join(undefined,undefined,undefined) === ",,". Actual: ' + (x.join(undefined, undefined, undefined)));
 }
 
-//CHECK#6
 var x = new Array(Infinity, Infinity, Infinity);
 if (x.join() !== "Infinity,Infinity,Infinity") {
   throw new Test262Error('#6: var x = new Array(Infinity,Infinity,Infinity); x.join(Infinity,Infinity,Infinity) === "Infinity,Infinity,Infinity". Actual: ' + (x.join(Infinity, Infinity, Infinity)));
 }
 
-//CHECK#7
 var x = new Array(NaN, NaN, NaN);
 if (x.join() !== "NaN,NaN,NaN") {
   throw new Test262Error('#7: var x = new Array(NaN,NaN,NaN); x.join(NaN,NaN,NaN) === "NaN,NaN,NaN". Actual: ' + (x.join(NaN, NaN, NaN)));

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A3.2_T2.js

@@ -7,18 +7,14 @@ esid: sec-array.prototype.join
 description: If Type(argument) is Object, evaluate ToPrimitive(argument, String)
 ---*/
 
-//CHECK#1
 var object = {
   valueOf: function() {
     return "+"
   }
 };
 var x = new Array(object);
-if (x.join() !== "[object Object]") {
+assert.sameValue(x.join(), "[object Object]", 'x.join() must return "[object Object]"');
-  throw new Test262Error('#1: var object = {valueOf: function() {return "+"}} var x = new Array(object); x.join() === "[object Object]". Actual: ' + (x.join()));
-}
 
-//CHECK#2
 var object = {
   valueOf: function() {
     return "+"
@@ -28,11 +24,8 @@ var object = {
   }
 };
 var x = new Array(object);
-if (x.join() !== "*") {
+assert.sameValue(x.join(), "*", 'x.join() must return "*"');
-  throw new Test262Error('#2: var object = {valueOf: function() {return "+"}, toString: function() {return "*"}} var x = new Array(object); x.join() === "*". Actual: ' + (x.join()));
-}
 
-//CHECK#3
 var object = {
   valueOf: function() {
     return "+"
@@ -42,11 +35,8 @@ var object = {
   }
 };
 var x = new Array(object);
-if (x.join() !== "+") {
+assert.sameValue(x.join(), "+", 'x.join() must return "+"');
-  throw new Test262Error('#3: var object = {valueOf: function() {return "+"}, toString: function() {return {}}} var x = new Array(object); x.join() === "+". Actual: ' + (x.join()));
-}
 
-//CHECK#4
 try {
   var object = {
     valueOf: function() {
@@ -57,30 +47,20 @@ try {
     }
   };
   var x = new Array(object);
-  if (x.join() !== "*") {
+  assert.sameValue(x.join(), "*", 'x.join() must return "*"');
-    throw new Test262Error('#4.1: var object = {valueOf: function() {throw "error"}, toString: function() {return "*"}} var x = new Array(object); x.join() === "*". Actual: ' + (x.join()));
-  }
 }
 catch (e) {
-  if (e === "error") {
+  assert.notSameValue(e, "error", 'The value of e is not "error"');
-    throw new Test262Error('#4.2: var object = {valueOf: function() {throw "error"}, toString: function() {return "*"}} var x = new Array(object); x.join() not throw "error"');
-  } else {
-    throw new Test262Error('#4.3: var object = {valueOf: function() {throw "error"}, toString: function() {return "*"}} var x = new Array(object); x.join() not throw Error. Actual: ' + (e));
-  }
 }
 
-//CHECK#5
 var object = {
   toString: function() {
     return "*"
   }
 };
 var x = new Array(object);
-if (x.join() !== "*") {
+assert.sameValue(x.join(), "*", 'x.join() must return "*"');
-  throw new Test262Error('#5: var object = {toString: function() {return "*"}} var x = new Array(object); x.join() === "*". Actual: ' + (x.join()));
-}
 
-//CHECK#6
 var object = {
   valueOf: function() {
     return {}
@@ -90,11 +70,8 @@ var object = {
   }
 }
 var x = new Array(object);
-if (x.join() !== "*") {
+assert.sameValue(x.join(), "*", 'x.join() must return "*"');
-  throw new Test262Error('#6: var object = {valueOf: function() {return {}}, toString: function() {return "*"}} var x = new Array(object); x.join() === "*". Actual: ' + (x.join()));
-}
 
-//CHECK#7
 try {
   var object = {
     valueOf: function() {
@@ -109,12 +86,9 @@ try {
   throw new Test262Error('#7.1: var object = {valueOf: function() {return "+"}, toString: function() {throw "error"}} var x = new Array(object); x.join() throw "error". Actual: ' + (x.join()));
 }
 catch (e) {
-  if (e !== "error") {
+  assert.sameValue(e, "error", 'The value of e is expected to be "error"');
-    throw new Test262Error('#7.2: var object = {valueOf: function() {return "+"}, toString: function() {throw "error"}} var x = new Array(object); x.join() throw "error". Actual: ' + (e));
-  }
 }
 
-//CHECK#8
 try {
   var object = {
     valueOf: function() {
@@ -129,9 +103,11 @@ try {
   throw new Test262Error('#8.1: var object = {valueOf: function() {return {}}, toString: function() {return {}}} var x = new Array(object); x.join() throw TypeError. Actual: ' + (x.join()));
 }
 catch (e) {
-  if ((e instanceof TypeError) !== true) {
+  assert.sameValue(
-    throw new Test262Error('#8.2: var object = {valueOf: function() {return {}}, toString: function() {return {}}} var x = new Array(object); x.join() throw TypeError. Actual: ' + (e));
+    e instanceof TypeError,
-  }
+    true,
+    'The result of evaluating (e instanceof TypeError) is expected to be true'
+  );
 }
 
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A4_T3.js

@@ -14,12 +14,10 @@ obj[1] = "y";
 obj[2] = "z";
 obj.length = -4294967294;
 
-//CHECK#1
 if (obj.join("") !== "") {
   throw new Test262Error('#1: var obj = {}; obj.join = Array.prototype.join; obj[0] = "x"; obj[1] = "y"; obj[2] = "z"; obj.length = -4294967294; obj.join("") === "". Actual: ' + (obj.join("")));
 }
 
-//CHECK#2
 if (obj.length !== -4294967294) {
   throw new Test262Error('#2: var obj = {}; obj.join = Array.prototype.join; obj[0] = "x"; obj[1] = "y"; obj[2] = "z"; obj.length = -4294967294; obj.join(""); obj.length === -4294967294. Actual: ' + (obj.length));
 }

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A5_T1.js

@@ -9,7 +9,6 @@ description: >
     of Array.prototype is Object.prototype
 ---*/
 
-//CHECK#1
 Array.prototype[1] = 1;
 var x = [0];
 x.length = 2;
@@ -17,7 +16,6 @@ if (x.join() !== "0,1") {
   throw new Test262Error('#1: Array.prototype[1] = 1; x = [0]; x.length = 2; x.join() === "0,1". Actual: ' + (x.join()));
 }
 
-//CHECK#2
 Object.prototype[1] = 1;
 Object.prototype.length = 2;
 Object.prototype.join = Array.prototype.join;

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A6.6.js

@@ -7,7 +7,6 @@ esid: sec-array.prototype.join
 description: Checking Array.prototype.join.prototype
 ---*/
 
-//CHECK#1
 if (Array.prototype.join.prototype !== undefined) {
   throw new Test262Error('#1: Array.prototype.join.prototype === undefined. Actual: ' + (Array.prototype.join.prototype));
 }

js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A6.7.js

@@ -1,23 +0,0 @@
-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: The join property of Array can't be used as constructor
-esid: sec-array.prototype.join
-description: >
-    If property does not implement the internal [[Construct]] method,
-    throw a TypeError exception
----*/
-
-//CHECK#1
-
-try {
-  new Array.prototype.join();
-  throw new Test262Error('#1.1: new Array.prototype.join() throw TypeError. Actual: ' + (new Array.prototype.join()));
-} catch (e) {
-  if ((e instanceof TypeError) !== true) {
-    throw new Test262Error('#1.2: new Array.prototype.join() throw TypeError. Actual: ' + (e));
-  }
-}
-
-reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/map/callbackfn-resize-arraybuffer.js

@@ -0,0 +1,78 @@
+// |reftest| skip -- resizable-arraybuffer is not supported
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.map
+description: TypedArray instance buffer can be resized during iteration
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function');
+
+testWithTypedArrayConstructors(function(TA) {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 4});
+  var sample = new TA(buffer);
+  var finalResult, expectedElements, expectedIndices, expectedArrays;
+  var elements, indices, arrays, result;
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.map.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(2 * BPE);
+        finalResult = undefined;
+        expectedElements = [0, 0];
+        expectedIndices = [0, 1];
+        expectedArrays = [sample, sample];
+      } catch (_) {
+        finalResult = 2;
+        expectedElements = [0, 0, 0];
+        expectedIndices = [0, 1, 2];
+        expectedArrays = [sample, sample, sample];
+      }
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+
+    return index;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (shrink)');
+  assert.compareArray(indices, expectedIndices, 'indices (shrink)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (shrink)');
+  assert.compareArray(result, [0, 1, finalResult], 'result (shrink)');
+
+  elements = [];
+  indices = [];
+  arrays = [];
+  result = Array.prototype.map.call(sample, function(element, index, array) {
+    if (elements.length === 0) {
+      try {
+        buffer.resize(4 * BPE);
+      } catch (_) {}
+    }
+
+    elements.push(element);
+    indices.push(index);
+    arrays.push(array);
+
+    return index;
+  });
+
+  assert.compareArray(elements, expectedElements, 'elements (grow)');
+  assert.compareArray(indices, expectedIndices, 'indices (grow)');
+  assert.compareArray(arrays, expectedArrays, 'arrays (grow)');
+  assert.compareArray(result, expectedIndices, 'result (grow)');
+});
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/map/shell.js

@@ -0,0 +1,124 @@
+// GENERATED, DO NOT EDIT
+// file: testTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of TypedArray objects.
+defines:
+  - typedArrayConstructors
+  - floatArrayConstructors
+  - intArrayConstructors
+  - TypedArray
+  - testWithTypedArrayConstructors
+  - testWithAtomicsFriendlyTypedArrayConstructors
+  - testWithNonAtomicsFriendlyTypedArrayConstructors
+  - testTypedArrayConversions
+---*/
+
+/**
+ * Array containing every typed array constructor.
+ */
+var typedArrayConstructors = [
+  Float64Array,
+  Float32Array,
+  Int32Array,
+  Int16Array,
+  Int8Array,
+  Uint32Array,
+  Uint16Array,
+  Uint8Array,
+  Uint8ClampedArray
+];
+
+var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
+var intArrayConstructors = typedArrayConstructors.slice(2, 7);
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Callback for testing a typed array constructor.
+ *
+ * @callback typedArrayConstructorCallback
+ * @param {Function} Constructor the constructor object to test with.
+ */
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithTypedArrayConstructors(f, selected) {
+  var constructors = selected || typedArrayConstructors;
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}
+
+/**
+ * Calls the provided function for every non-"Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithNonAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Float64Array,
+    Float32Array,
+    Uint8ClampedArray
+  ]);
+}
+
+/**
+ * Calls the provided function for every "Atomics Friendly" typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithAtomicsFriendlyTypedArrayConstructors(f) {
+  testWithTypedArrayConstructors(f, [
+    Int32Array,
+    Int16Array,
+    Int8Array,
+    Uint32Array,
+    Uint16Array,
+    Uint8Array,
+  ]);
+}
+
+/**
+ * Helper for conversion operations on TypedArrays, the expected values
+ * properties are indexed in order to match the respective value for each
+ * TypedArray constructor
+ * @param  {Function} fn - the function to call for each constructor and value.
+ *                         will be called with the constructor, value, expected
+ *                         value, and a initial value that can be used to avoid
+ *                         a false positive with an equivalent expected value.
+ */
+function testTypedArrayConversions(byteConversionValues, fn) {
+  var values = byteConversionValues.values;
+  var expected = byteConversionValues.expected;
+
+  testWithTypedArrayConstructors(function(TA) {
+    var name = TA.name.slice(0, -5);
+
+    return values.forEach(function(value, index) {
+      var exp = expected[name][index];
+      var initial = 0;
+      if (exp === 0) {
+        initial = 1;
+      }
+      fn(TA, value, exp, initial);
+    });
+  });
+}

js/src/tests/test262/built-ins/Array/prototype/pop/S15.4.4.6_A1.1_T1.js

@@ -9,19 +9,16 @@ esid: sec-array.prototype.pop
 description: Checking this algorithm
 ---*/
 
-//CHECK#1
 var x = new Array();
 var pop = x.pop();
 if (pop !== undefined) {
   throw new Test262Error('#1: var x = new Array(); x.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#2
 if (x.length !== 0) {
   throw new Test262Error('#2: var x = new Array(); x.pop(); x.length === 0. Actual: ' + (x.length));
 }
 
-//CHECK#3
 var x = Array(1, 2, 3);
 x.length = 0;
 var pop = x.pop();
@@ -29,7 +26,6 @@ if (pop !== undefined) {
   throw new Test262Error('#2: var x = Array(1,2,3); x.length = 0; x.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#4
 if (x.length !== 0) {
   throw new Test262Error('#4: var x = new Array(1,2,3); x.length = 0; x.pop(); x.length === 0. Actual: ' + (x.length));
 }

js/src/tests/test262/built-ins/Array/prototype/pop/S15.4.4.6_A1.2_T1.js

@@ -9,29 +9,24 @@ esid: sec-array.prototype.pop
 description: Checking this use new Array() and []
 ---*/
 
-//CHECK#1
 var x = new Array(0, 1, 2, 3);
 var pop = x.pop();
 if (pop !== 3) {
   throw new Test262Error('#1: x = new Array(0,1,2,3); x.pop() === 3. Actual: ' + (pop));
 }
 
-//CHECK#2
 if (x.length !== 3) {
   throw new Test262Error('#2: x = new Array(0,1,2,3); x.pop(); x.length == 3');
 }
 
-//CHECK#3
 if (x[3] !== undefined) {
   throw new Test262Error('#3: x = new Array(0,1,2,3); x.pop(); x[3] == undefined');
 }
 
-//CHECK#4
 if (x[2] !== 2) {
   throw new Test262Error('#4: x = new Array(0,1,2,3); x.pop(); x[2] == 2');
 }
 
-//CHECK#5
 x = [];
 x[0] = 0;
 x[3] = 3;
@@ -40,29 +35,24 @@ if (pop !== 3) {
   throw new Test262Error('#5: x = []; x[0] = 0; x[3] = 3; x.pop() === 3. Actual: ' + (pop));
 }
 
-//CHECK#6
 if (x.length !== 3) {
   throw new Test262Error('#6: x = []; x[0] = 0; x[3] = 3; x.pop(); x.length == 3');
 }
 
-//CHECK#7
 if (x[3] !== undefined) {
   throw new Test262Error('#7: x = []; x[0] = 0; x[3] = 3; x.pop(); x[3] == undefined');
 }
 
-//CHECK#8
 if (x[2] !== undefined) {
   throw new Test262Error('#8: x = []; x[0] = 0; x[3] = 3; x.pop(); x[2] == undefined');
 }
 
-//CHECK#9
 x.length = 1;
 var pop = x.pop();
 if (pop !== 0) {
   throw new Test262Error('#9: x = []; x[0] = 0; x[3] = 3; x.pop(); x.length = 1; x.pop() === 0. Actual: ' + (pop));
 }
 
-//CHECK#10
 if (x.length !== 0) {
   throw new Test262Error('#10: x = []; x[0] = 0; x[3] = 3; x.pop(); x.length = 1; x.pop(); x.length === 0. Actual: ' + (x.length));
 }

js/src/tests/test262/built-ins/Array/prototype/pop/S15.4.4.6_A2_T1.js

@@ -17,37 +17,31 @@ obj.pop = Array.prototype.pop;
 if (obj.length !== undefined) {
   throw new Test262Error('#0: var obj = {}; obj.length === undefined. Actual: ' + (obj.length));
 } else {
-  //CHECK#1
   var pop = obj.pop();
   if (pop !== undefined) {
     throw new Test262Error('#1: var obj = {}; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
   }
-  //CHECK#2
   if (obj.length !== 0) {
     throw new Test262Error('#2: var obj = {}; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
   }
 }
 
-//CHECK#3
 obj.length = undefined;
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#3: var obj = {}; obj.length = undefined; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#4
 if (obj.length !== 0) {
   throw new Test262Error('#4: var obj = {}; obj.length = undefined; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 }
 
-//CHECK#5
 obj.length = null
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#5: var obj = {}; obj.length = null; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#6
 if (obj.length !== 0) {
   throw new Test262Error('#6: var obj = {}; obj.length = null; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 }

js/src/tests/test262/built-ins/Array/prototype/pop/S15.4.4.6_A2_T2.js

@@ -14,50 +14,42 @@ description: >
 var obj = {};
 obj.pop = Array.prototype.pop;
 
-//CHECK#1
 obj.length = NaN;
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#1: var obj = {}; obj.length = NaN; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#2
 if (obj.length !== 0) {
   throw new Test262Error('#2: var obj = {}; obj.length = NaN; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 }
 
-//CHECK#3
 obj.length = Number.POSITIVE_INFINITY;
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#3: var obj = {}; obj.length = Number.POSITIVE_INFINITY; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#4
 if (obj.length !== 9007199254740990) {
   throw new Test262Error('#4: var obj = {}; obj.length = Number.POSITIVE_INFINITY; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 9007199254740990. Actual: ' + (obj.length));
 }
 
-//CHECK#5
 obj.length = Number.NEGATIVE_INFINITY;
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#5: var obj = {}; obj.length = Number.NEGATIVE_INFINITY; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#6
 if (obj.length !== 0) {
   throw new Test262Error('#6: var obj = {}; obj.length = Number.NEGATIVE_INFINITY; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 }
 
-//CHECK#7
 obj.length = -0;
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#7: var obj = {}; obj.length = -0; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#8
 if (obj.length !== 0) {
   throw new Test262Error('#8: var obj = {}; obj.length = -0; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 } else {
@@ -66,26 +58,22 @@ if (obj.length !== 0) {
   }
 }
 
-//CHECK#9
 obj.length = 0.5;
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#9: var obj = {}; obj.length = 0.5; obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#10
 if (obj.length !== 0) {
   throw new Test262Error('#10: var obj = {}; obj.length = 0.5; obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 }
 
-//CHECK#11
 obj.length = new Number(0);
 var pop = obj.pop();
 if (pop !== undefined) {
   throw new Test262Error('#11: var obj = {}; obj.length = new Number(0); obj.pop = Array.prototype.pop; obj.pop() === undefined. Actual: ' + (pop));
 }
 
-//CHECK#12
 if (obj.length !== 0) {
   throw new Test262Error('#12: var obj = {}; obj.length = new Number(0); obj.pop = Array.prototype.pop; obj.pop(); obj.length === 0. Actual: ' + (obj.length));
 }