Commit

21 files changed, 7670 insertions, 0 deletions

diff --git a/src/node_modules/es-abstract/test/GetIntrinsic.js b/src/node_modules/es-abstract/test/GetIntrinsic.js
new file mode 100644
index 0000000..5d9966c
--- /dev/null
+++ b/src/node_modules/es-abstract/test/GetIntrinsic.js
@@ -0,0 +1,207 @@
+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var test = require('tape');
+var forEach = require('foreach');
+var debug = require('object-inspect');
+var generatorFns = require('make-generator-function')();
+var asyncFns = require('make-async-function').list();
+var asyncGenFns = require('make-async-generator-function')();
+
+var callBound = require('../helpers/callBound');
+var v = require('./helpers/values');
+var $gOPD = require('../helpers/getOwnPropertyDescriptor');
+var defineProperty = require('./helpers/defineProperty');
+
+var $isProto = callBound('%Object.prototype.isPrototypeOf%');
+
+test('export', function (t) {
+	t.equal(typeof GetIntrinsic, 'function', 'it is a function');
+	t.equal(GetIntrinsic.length, 2, 'function has length of 2');
+
+	t.end();
+});
+
+test('throws', function (t) {
+	t['throws'](
+		function () { GetIntrinsic('not an intrinsic'); },
+		SyntaxError,
+		'nonexistent intrinsic throws a syntax error'
+	);
+
+	t['throws'](
+		function () { GetIntrinsic(''); },
+		TypeError,
+		'empty string intrinsic throws a type error'
+	);
+
+	t['throws'](
+		function () { GetIntrinsic('.'); },
+		SyntaxError,
+		'"just a dot" intrinsic throws a syntax error'
+	);
+
+	forEach(v.nonStrings, function (nonString) {
+		t['throws'](
+			function () { GetIntrinsic(nonString); },
+			TypeError,
+			debug(nonString) + ' is not a String'
+		);
+	});
+
+	forEach(v.nonBooleans, function (nonBoolean) {
+		t['throws'](
+			function () { GetIntrinsic('%', nonBoolean); },
+			TypeError,
+			debug(nonBoolean) + ' is not a Boolean'
+		);
+	});
+
+	forEach([
+		'toString',
+		'propertyIsEnumerable',
+		'hasOwnProperty'
+	], function (objectProtoMember) {
+		t['throws'](
+			function () { GetIntrinsic(objectProtoMember); },
+			SyntaxError,
+			debug(objectProtoMember) + ' is not an intrinsic'
+		);
+	});
+
+	t.end();
+});
+
+test('base intrinsics', function (t) {
+	t.equal(GetIntrinsic('%Object%'), Object, '%Object% yields Object');
+	t.equal(GetIntrinsic('Object'), Object, 'Object yields Object');
+	t.equal(GetIntrinsic('%Array%'), Array, '%Array% yields Array');
+	t.equal(GetIntrinsic('Array'), Array, 'Array yields Array');
+
+	t.end();
+});
+
+test('dotted paths', function (t) {
+	t.equal(GetIntrinsic('%Object.prototype.toString%'), Object.prototype.toString, '%Object.prototype.toString% yields Object.prototype.toString');
+	t.equal(GetIntrinsic('Object.prototype.toString'), Object.prototype.toString, 'Object.prototype.toString yields Object.prototype.toString');
+	t.equal(GetIntrinsic('%Array.prototype.push%'), Array.prototype.push, '%Array.prototype.push% yields Array.prototype.push');
+	t.equal(GetIntrinsic('Array.prototype.push'), Array.prototype.push, 'Array.prototype.push yields Array.prototype.push');
+
+	test('underscore paths are aliases for dotted paths', { skip: !Object.isFrozen || Object.isFrozen(Object.prototype) }, function (st) {
+		var original = GetIntrinsic('%ObjProto_toString%');
+
+		forEach([
+			'%Object.prototype.toString%',
+			'Object.prototype.toString',
+			'%ObjectPrototype.toString%',
+			'ObjectPrototype.toString',
+			'%ObjProto_toString%',
+			'ObjProto_toString'
+		], function (name) {
+			defineProperty(Object.prototype, 'toString', {
+				value: function toString() {
+					return original.apply(this, arguments);
+				}
+			});
+			st.equal(GetIntrinsic(name), original, name + ' yields original Object.prototype.toString');
+		});
+
+		defineProperty(Object.prototype, 'toString', { value: original });
+		st.end();
+	});
+
+	test('dotted paths cache', { skip: !Object.isFrozen || Object.isFrozen(Object.prototype) }, function (st) {
+		var original = GetIntrinsic('%Object.prototype.propertyIsEnumerable%');
+
+		forEach([
+			'%Object.prototype.propertyIsEnumerable%',
+			'Object.prototype.propertyIsEnumerable',
+			'%ObjectPrototype.propertyIsEnumerable%',
+			'ObjectPrototype.propertyIsEnumerable'
+		], function (name) {
+			// eslint-disable-next-line no-extend-native
+			Object.prototype.propertyIsEnumerable = function propertyIsEnumerable() {
+				return original.apply(this, arguments);
+			};
+			st.equal(GetIntrinsic(name), original, name + ' yields cached Object.prototype.propertyIsEnumerable');
+		});
+
+		// eslint-disable-next-line no-extend-native
+		Object.prototype.propertyIsEnumerable = original;
+		st.end();
+	});
+
+	test('dotted path reports correct error', function (st) {
+		st['throws'](function () {
+			GetIntrinsic('%NonExistentIntrinsic.prototype.property%');
+		}, /%NonExistentIntrinsic%/, 'The base intrinsic of %NonExistentIntrinsic.prototype.property% is %NonExistentIntrinsic%');
+
+		st['throws'](function () {
+			GetIntrinsic('%NonExistentIntrinsicPrototype.property%');
+		}, /%NonExistentIntrinsicPrototype%/, 'The base intrinsic of %NonExistentIntrinsicPrototype.property% is %NonExistentIntrinsicPrototype%');
+
+		st.end();
+	});
+
+	t.end();
+});
+
+test('accessors', { skip: !$gOPD || typeof Map !== 'function' }, function (t) {
+	var actual = $gOPD(Map.prototype, 'size');
+	t.ok(actual, 'Map.prototype.size has a descriptor');
+	t.equal(typeof actual.get, 'function', 'Map.prototype.size has a getter function');
+	t.equal(GetIntrinsic('%Map.prototype.size%'), actual.get, '%Map.prototype.size% yields the getter for it');
+	t.equal(GetIntrinsic('Map.prototype.size'), actual.get, 'Map.prototype.size yields the getter for it');
+
+	t.end();
+});
+
+test('generator functions', { skip: !generatorFns.length }, function (t) {
+	var $GeneratorFunction = GetIntrinsic('%GeneratorFunction%');
+	var $GeneratorFunctionPrototype = GetIntrinsic('%Generator%');
+	var $GeneratorPrototype = GetIntrinsic('%GeneratorPrototype%');
+
+	forEach(generatorFns, function (genFn) {
+		var fnName = genFn.name;
+		fnName = fnName ? "'" + fnName + "'" : 'genFn';
+
+		t.ok(genFn instanceof $GeneratorFunction, fnName + ' instanceof %GeneratorFunction%');
+		t.ok($isProto($GeneratorFunctionPrototype, genFn), '%Generator% is prototype of ' + fnName);
+		t.ok($isProto($GeneratorPrototype, genFn.prototype), '%GeneratorPrototype% is prototype of ' + fnName + '.prototype');
+	});
+
+	t.end();
+});
+
+test('async functions', { skip: !asyncFns.length }, function (t) {
+	var $AsyncFunction = GetIntrinsic('%AsyncFunction%');
+	var $AsyncFunctionPrototype = GetIntrinsic('%AsyncFunctionPrototype%');
+
+	forEach(asyncFns, function (asyncFn) {
+		var fnName = asyncFn.name;
+		fnName = fnName ? "'" + fnName + "'" : 'asyncFn';
+
+		t.ok(asyncFn instanceof $AsyncFunction, fnName + ' instanceof %AsyncFunction%');
+		t.ok($isProto($AsyncFunctionPrototype, asyncFn), '%AsyncFunctionPrototype% is prototype of ' + fnName);
+	});
+
+	t.end();
+});
+
+test('async generator functions', { skip: !asyncGenFns.length }, function (t) {
+	var $AsyncGeneratorFunction = GetIntrinsic('%AsyncGeneratorFunction%');
+	var $AsyncGeneratorFunctionPrototype = GetIntrinsic('%AsyncGenerator%');
+	var $AsyncGeneratorPrototype = GetIntrinsic('%AsyncGeneratorPrototype%');
+
+	forEach(asyncGenFns, function (asyncGenFn) {
+		var fnName = asyncGenFn.name;
+		fnName = fnName ? "'" + fnName + "'" : 'asyncGenFn';
+
+		t.ok(asyncGenFn instanceof $AsyncGeneratorFunction, fnName + ' instanceof %AsyncGeneratorFunction%');
+		t.ok($isProto($AsyncGeneratorFunctionPrototype, asyncGenFn), '%AsyncGenerator% is prototype of ' + fnName);
+		t.ok($isProto($AsyncGeneratorPrototype, asyncGenFn.prototype), '%AsyncGeneratorPrototype% is prototype of ' + fnName + '.prototype');
+	});
+
+	t.end();
+});
diff --git a/src/node_modules/es-abstract/test/diffOps.js b/src/node_modules/es-abstract/test/diffOps.js
new file mode 100644
index 0000000..602098d
--- /dev/null
+++ b/src/node_modules/es-abstract/test/diffOps.js
@@ -0,0 +1,27 @@
+'use strict';
+
+var keys = require('object-keys');
+var forEach = require('foreach');
+var indexOf = require('array.prototype.indexof');
+
+module.exports = function diffOperations(actual, expected, expectedMissing) {
+	var actualKeys = keys(actual);
+	var expectedKeys = keys(expected);
+
+	var extra = [];
+	var missing = [];
+	forEach(actualKeys, function (op) {
+		if (!(op in expected)) {
+			extra.push(op);
+		} else if (indexOf(expectedMissing, op) !== -1) {
+			extra.push(op);
+		}
+	});
+	forEach(expectedKeys, function (op) {
+		if (typeof actual[op] !== 'function' && indexOf(expectedMissing, op) === -1) {
+			missing.push(op);
+		}
+	});
+
+	return { missing: missing, extra: extra };
+};
diff --git a/src/node_modules/es-abstract/test/es2015.js b/src/node_modules/es-abstract/test/es2015.js
new file mode 100644
index 0000000..d267384
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es2015.js
@@ -0,0 +1,146 @@
+'use strict';
+
+var ES = require('../').ES2015;
+var boundES = require('./helpers/createBoundESNamespace')(ES);
+
+var ops = require('../operations/2015');
+
+var expectedMissing = [
+	'AddRestrictedFunctionProperties',
+	'AllocateArrayBuffer',
+	'AllocateTypedArray',
+	'BoundFunctionCreate',
+	'Canonicalize',
+	'CharacterRange',
+	'CharacterSetMatcher',
+	'CloneArrayBuffer',
+	'Completion',
+	'Construct',
+	'CopyDataBlockBytes',
+	'CreateArrayFromList',
+	'CreateBuiltinFunction',
+	'CreateByteDataBlock',
+	'CreateDynamicFunction',
+	'CreateIntrinsics',
+	'CreateListIterator',
+	'CreateMapIterator',
+	'CreateMappedArgumentsObject',
+	'CreatePerIterationEnvironment',
+	'CreateRealm',
+	'CreateSetIterator',
+	'CreateUnmappedArgumentsObject',
+	'Decode',
+	'DetachArrayBuffer',
+	'Encode',
+	'EnqueueJob',
+	'EscapeRegExpPattern',
+	'EvalDeclarationInstantiation',
+	'EvaluateCall',
+	'EvaluateDirectCall',
+	'EvaluateNew',
+	'ForBodyEvaluation',
+	'ForIn/OfBodyEvaluation',
+	'ForIn/OfHeadEvaluation',
+	'FulfillPromise',
+	'FunctionAllocate',
+	'FunctionCreate',
+	'FunctionInitialize',
+	'GeneratorFunctionCreate',
+	'GeneratorResume',
+	'GeneratorResumeAbrupt',
+	'GeneratorStart',
+	'GeneratorValidate',
+	'GeneratorYield',
+	'GetBase',
+	'GetFunctionRealm',
+	'GetGlobalObject',
+	'GetIdentifierReference',
+	'GetModuleNamespace',
+	'GetNewTarget',
+	'GetReferencedName',
+	'GetSuperConstructor',
+	'GetTemplateObject',
+	'GetThisEnvironment',
+	'GetThisValue',
+	'GetValue',
+	'GetValueFromBuffer',
+	'GetViewValue',
+	'HasPrimitiveBase',
+	'HostResolveImportedModule',
+	'ImportedLocalNames',
+	'InitializeHostDefinedRealm',
+	'InitializeReferencedBinding',
+	'IntegerIndexedElementGet',
+	'IntegerIndexedElementSet',
+	'IntegerIndexedObjectCreate',
+	'InternalizeJSONProperty',
+	'IsAnonymousFunctionDefinition',
+	'IsCompatiblePropertyDescriptor',
+	'IsDetachedBuffer',
+	'IsInTailPosition',
+	'IsLabelledFunction',
+	'IsPropertyReference',
+	'IsStrictReference',
+	'IsSuperReference',
+	'IsUnresolvableReference',
+	'IsWordChar',
+	'LocalTime',
+	'LoopContinues',
+	'MakeArgGetter',
+	'MakeArgSetter',
+	'MakeClassConstructor',
+	'MakeConstructor',
+	'MakeMethod',
+	'MakeSuperPropertyReference',
+	'max',
+	'min',
+	'ModuleNamespaceCreate',
+	'msPerDay',
+	'NewDeclarativeEnvironment',
+	'NewFunctionEnvironment',
+	'NewGlobalEnvironment',
+	'NewModuleEnvironment',
+	'NewObjectEnvironment',
+	'NewPromiseCapability',
+	'NormalCompletion',
+	'ObjectDefineProperties',
+	'OrdinaryCallBindThis',
+	'OrdinaryCallEvaluateBody',
+	'ParseModule',
+	'PerformEval',
+	'PerformPromiseAll',
+	'PerformPromiseRace',
+	'PerformPromiseThen',
+	'PrepareForOrdinaryCall',
+	'PrepareForTailCall',
+	'ProxyCreate',
+	'PutValue',
+	'RegExpAlloc',
+	'RegExpBuiltinExec',
+	'RegExpCreate',
+	'RegExpInitialize',
+	'RejectPromise',
+	'RepeatMatcher',
+	'ResolveBinding',
+	'ResolveThisBinding',
+	'SerializeJSONArray',
+	'SerializeJSONObject',
+	'SerializeJSONProperty',
+	'SetDefaultGlobalBindings',
+	'SetRealmGlobalObject',
+	'SetValueInBuffer',
+	'SetViewValue',
+	'sign',
+	'SortCompare',
+	'SplitMatch',
+	'StringCreate',
+	'StringGetIndexProperty',
+	'TriggerPromiseReactions',
+	'TypedArrayFrom',
+	'UpdateEmpty',
+	'UTC'
+];
+
+require('./tests').es2015(boundES, ops, expectedMissing);
+
+require('./helpers/runManifestTest')(require('tape'), ES, 2015);
diff --git a/src/node_modules/es-abstract/test/es2016.js b/src/node_modules/es-abstract/test/es2016.js
new file mode 100644
index 0000000..8815db6
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es2016.js
@@ -0,0 +1,168 @@
+'use strict';
+
+var ES = require('../').ES2016;
+var boundES = require('./helpers/createBoundESNamespace')(ES);
+
+var ops = require('../operations/2016');
+
+var expectedMissing = [
+	'AddRestrictedFunctionProperties',
+	'AllocateArrayBuffer',
+	'AllocateTypedArray',
+	'AllocateTypedArrayBuffer',
+	'BlockDeclarationInstantiation',
+	'BoundFunctionCreate',
+	'Canonicalize',
+	'CharacterRange',
+	'CharacterRangeOrUnion',
+	'CharacterSetMatcher',
+	'CloneArrayBuffer',
+	'Completion',
+	'Construct',
+	'CopyDataBlockBytes',
+	'CreateArrayFromList',
+	'CreateArrayIterator',
+	'CreateBuiltinFunction',
+	'CreateByteDataBlock',
+	'CreateDynamicFunction',
+	'CreateIntrinsics',
+	'CreateListIterator',
+	'CreateMapIterator',
+	'CreateMappedArgumentsObject',
+	'CreatePerIterationEnvironment',
+	'CreateRealm',
+	'CreateResolvingFunctions',
+	'CreateSetIterator',
+	'CreateStringIterator',
+	'CreateUnmappedArgumentsObject',
+	'Decode',
+	'DetachArrayBuffer',
+	'Encode',
+	'EnqueueJob',
+	'EnumerateObjectProperties',
+	'EscapeRegExpPattern',
+	'EvalDeclarationInstantiation',
+	'EvaluateCall',
+	'EvaluateDirectCall',
+	'EvaluateNew',
+	'ForBodyEvaluation',
+	'ForIn/OfBodyEvaluation',
+	'ForIn/OfHeadEvaluation',
+	'FulfillPromise',
+	'FunctionAllocate',
+	'FunctionCreate',
+	'FunctionDeclarationInstantiation',
+	'FunctionInitialize',
+	'GeneratorFunctionCreate',
+	'GeneratorResume',
+	'GeneratorResumeAbrupt',
+	'GeneratorStart',
+	'GeneratorValidate',
+	'GeneratorYield',
+	'GetActiveScriptOrModule',
+	'GetFunctionRealm',
+	'GetGlobalObject',
+	'GetIdentifierReference',
+	'GetModuleNamespace',
+	'GetNewTarget',
+	'GetSuperConstructor',
+	'GetTemplateObject',
+	'GetThisEnvironment',
+	'GetThisValue',
+	'GetValue',
+	'GetValueFromBuffer',
+	'GetViewValue',
+	'GlobalDeclarationInstantiation',
+	'HostPromiseRejectionTracker',
+	'HostReportErrors',
+	'HostResolveImportedModule',
+	'IfAbruptRejectPromise',
+	'ImportedLocalNames',
+	'InitializeBoundName',
+	'InitializeHostDefinedRealm',
+	'InitializeReferencedBinding',
+	'IntegerIndexedElementGet',
+	'IntegerIndexedElementSet',
+	'IntegerIndexedObjectCreate',
+	'InternalizeJSONProperty',
+	'IsAnonymousFunctionDefinition',
+	'IsCompatiblePropertyDescriptor',
+	'IsDetachedBuffer',
+	'IsInTailPosition',
+	'IsLabelledFunction',
+	'IsWordChar',
+	'LocalTime',
+	'LoopContinues',
+	'MakeArgGetter',
+	'MakeArgSetter',
+	'MakeClassConstructor',
+	'MakeConstructor',
+	'MakeMethod',
+	'MakeSuperPropertyReference',
+	'max',
+	'min',
+	'ModuleNamespaceCreate',
+	'NewDeclarativeEnvironment',
+	'NewFunctionEnvironment',
+	'NewGlobalEnvironment',
+	'NewModuleEnvironment',
+	'NewObjectEnvironment',
+	'NewPromiseCapability',
+	'NextJob',
+	'NormalCompletion',
+	'ObjectDefineProperties',
+	'OrdinaryCallBindThis',
+	'OrdinaryCallEvaluateBody',
+	'OrdinaryDelete',
+	'OrdinaryGet',
+	'OrdinaryIsExtensible',
+	'OrdinaryOwnPropertyKeys',
+	'OrdinaryPreventExtensions',
+	'OrdinarySet',
+	'ParseModule',
+	'ParseScript',
+	'PerformEval',
+	'PerformPromiseAll',
+	'PerformPromiseRace',
+	'PerformPromiseThen',
+	'PrepareForOrdinaryCall',
+	'PrepareForTailCall',
+	'PromiseReactionJob',
+	'PromiseResolveThenableJob',
+	'ProxyCreate',
+	'PutValue',
+	'RegExpAlloc',
+	'RegExpBuiltinExec',
+	'RegExpCreate',
+	'RegExpInitialize',
+	'RejectPromise',
+	'RepeatMatcher',
+	'ResolveBinding',
+	'ResolveThisBinding',
+	'ReturnIfAbrupt',
+	'ScriptEvaluation',
+	'ScriptEvaluationJob',
+	'SerializeJSONArray',
+	'SerializeJSONObject',
+	'SerializeJSONProperty',
+	'SetDefaultGlobalBindings',
+	'SetRealmGlobalObject',
+	'SetValueInBuffer',
+	'SetViewValue',
+	'SortCompare',
+	'SplitMatch',
+	'StringCreate',
+	'TopLevelModuleEvaluationJob',
+	'ToString Applied to the Number Type',
+	'TriggerPromiseReactions',
+	'TypedArrayCreate',
+	'TypedArraySpeciesCreate',
+	'UpdateEmpty',
+	'UTC', // depends on LocalTZA
+	'UTF16Decode',
+	'ValidateTypedArray'
+];
+
+require('./tests').es2016(boundES, ops, expectedMissing);
+
+require('./helpers/runManifestTest')(require('tape'), ES, 2016);
diff --git a/src/node_modules/es-abstract/test/es2017.js b/src/node_modules/es-abstract/test/es2017.js
new file mode 100644
index 0000000..e11c5d4
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es2017.js
@@ -0,0 +1,214 @@
+'use strict';
+
+var ES = require('../').ES2017;
+var boundES = require('./helpers/createBoundESNamespace')(ES);
+
+var ops = require('../operations/2017');
+
+var expectedMissing = [
+	'AddWaiter',
+	'agent-order',
+	'AgentCanSuspend',
+	'AgentSignifier',
+	'AllocateArrayBuffer',
+	'AllocateSharedArrayBuffer',
+	'AllocateTypedArray',
+	'AllocateTypedArrayBuffer',
+	'AsyncFunctionAwait',
+	'AsyncFunctionCreate',
+	'AsyncFunctionStart',
+	'AtomicLoad',
+	'AtomicReadModifyWrite',
+	'BlockDeclarationInstantiation',
+	'BoundFunctionCreate',
+	'Canonicalize',
+	'CharacterRange',
+	'CharacterRangeOrUnion',
+	'CharacterSetMatcher',
+	'CloneArrayBuffer',
+	'Completion',
+	'ComposeWriteEventBytes',
+	'Construct',
+	'CopyDataBlockBytes',
+	'CreateArrayFromList',
+	'CreateArrayIterator',
+	'CreateBuiltinFunction',
+	'CreateByteDataBlock',
+	'CreateDynamicFunction',
+	'CreateIntrinsics',
+	'CreateListIterator',
+	'CreateMapIterator',
+	'CreateMappedArgumentsObject',
+	'CreatePerIterationEnvironment',
+	'CreateRealm',
+	'CreateResolvingFunctions',
+	'CreateSetIterator',
+	'CreateSharedByteDataBlock',
+	'CreateStringIterator',
+	'CreateUnmappedArgumentsObject',
+	'Decode',
+	'DetachArrayBuffer',
+	'Encode',
+	'EnqueueJob',
+	'EnterCriticalSection',
+	'EnumerateObjectProperties',
+	'EscapeRegExpPattern',
+	'EvalDeclarationInstantiation',
+	'EvaluateCall',
+	'EvaluateDirectCall',
+	'EvaluateNew',
+	'EventSet',
+	'ForBodyEvaluation',
+	'ForIn/OfBodyEvaluation',
+	'ForIn/OfHeadEvaluation',
+	'FulfillPromise',
+	'FunctionAllocate',
+	'FunctionCreate',
+	'FunctionDeclarationInstantiation',
+	'FunctionInitialize',
+	'GeneratorFunctionCreate',
+	'GeneratorResume',
+	'GeneratorResumeAbrupt',
+	'GeneratorStart',
+	'GeneratorValidate',
+	'GeneratorYield',
+	'GetActiveScriptOrModule',
+	'GetBase',
+	'GetFunctionRealm',
+	'GetGlobalObject',
+	'GetIdentifierReference',
+	'GetModifySetValueInBuffer',
+	'GetModuleNamespace',
+	'GetNewTarget',
+	'GetReferencedName',
+	'GetSuperConstructor',
+	'GetTemplateObject',
+	'GetThisEnvironment',
+	'GetThisValue',
+	'GetValue',
+	'GetValueFromBuffer',
+	'GetViewValue',
+	'GetWaiterList',
+	'GlobalDeclarationInstantiation',
+	'happens-before',
+	'HasPrimitiveBase',
+	'host-synchronizes-with',
+	'HostEnsureCanCompileStrings',
+	'HostEventSet',
+	'HostPromiseRejectionTracker',
+	'HostReportErrors',
+	'HostResolveImportedModule',
+	'IfAbruptRejectPromise',
+	'ImportedLocalNames',
+	'InitializeBoundName',
+	'InitializeHostDefinedRealm',
+	'InitializeReferencedBinding',
+	'IntegerIndexedElementGet',
+	'IntegerIndexedElementSet',
+	'IntegerIndexedObjectCreate',
+	'InternalizeJSONProperty',
+	'IsAnonymousFunctionDefinition',
+	'IsCompatiblePropertyDescriptor',
+	'IsDetachedBuffer',
+	'IsInTailPosition',
+	'IsLabelledFunction',
+	'IsPropertyReference',
+	'IsSharedArrayBuffer',
+	'IsStrictReference',
+	'IsSuperReference',
+	'IsUnresolvableReference',
+	'IsWordChar',
+	'LeaveCriticalSection',
+	'LocalTime',
+	'LoopContinues',
+	'MakeArgGetter',
+	'MakeArgSetter',
+	'MakeClassConstructor',
+	'MakeConstructor',
+	'MakeMethod',
+	'MakeSuperPropertyReference',
+	'max',
+	'memory-order',
+	'min',
+	'ModuleNamespaceCreate',
+	'NewDeclarativeEnvironment',
+	'NewFunctionEnvironment',
+	'NewGlobalEnvironment',
+	'NewModuleEnvironment',
+	'NewObjectEnvironment',
+	'NewPromiseCapability',
+	'NormalCompletion',
+	'NumberToRawBytes',
+	'ObjectDefineProperties',
+	'OrdinaryCallBindThis',
+	'OrdinaryCallEvaluateBody',
+	'OrdinaryDelete',
+	'OrdinaryGet',
+	'OrdinaryIsExtensible',
+	'OrdinaryOwnPropertyKeys',
+	'OrdinaryPreventExtensions',
+	'OrdinarySet',
+	'OrdinaryToPrimitive',
+	'ParseModule',
+	'ParseScript',
+	'PerformEval',
+	'PerformPromiseAll',
+	'PerformPromiseRace',
+	'PerformPromiseThen',
+	'PrepareForOrdinaryCall',
+	'PrepareForTailCall',
+	'PromiseReactionJob',
+	'PromiseResolveThenableJob',
+	'ProxyCreate',
+	'PutValue',
+	'RawBytesToNumber',
+	'reads-bytes-from',
+	'reads-from',
+	'RegExpAlloc',
+	'RegExpBuiltinExec',
+	'RegExpCreate',
+	'RegExpInitialize',
+	'RejectPromise',
+	'RemoveWaiter',
+	'RemoveWaiters',
+	'RepeatMatcher',
+	'ResolveBinding',
+	'ResolveThisBinding',
+	'ReturnIfAbrupt',
+	'RunJobs',
+	'ScriptEvaluation',
+	'ScriptEvaluationJob',
+	'SerializeJSONArray',
+	'SerializeJSONObject',
+	'SerializeJSONProperty',
+	'SetDefaultGlobalBindings',
+	'SetImmutablePrototype',
+	'SetRealmGlobalObject',
+	'SetValueInBuffer',
+	'SetViewValue',
+	'SharedDataBlockEventSet',
+	'SortCompare',
+	'SplitMatch',
+	'StringCreate',
+	'Suspend',
+	'TopLevelModuleEvaluationJob',
+	'ToString Applied to the Number Type',
+	'TriggerPromiseReactions',
+	'TypedArrayCreate',
+	'TypedArraySpeciesCreate',
+	'UpdateEmpty',
+	'UTC', // depends on LocalTZA'UTC',
+	'UTF16Decode',
+	'ValidateAtomicAccess',
+	'ValidateSharedIntegerTypedArray',
+	'ValidateTypedArray',
+	'ValueOfReadEvent',
+	'WakeWaiter',
+	'WordCharacters', // depends on Canonicalize
+	'AddRestrictedFunctionProperties',
+	'synchronizes-with'
+];
+
+require('./tests').es2017(boundES, ops, expectedMissing);
+
+require('./helpers/runManifestTest')(require('tape'), ES, 2017);
diff --git a/src/node_modules/es-abstract/test/es2018.js b/src/node_modules/es-abstract/test/es2018.js
new file mode 100644
index 0000000..36a1922
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es2018.js
@@ -0,0 +1,233 @@
+'use strict';
+
+var ES = require('../').ES2018;
+var boundES = require('./helpers/createBoundESNamespace')(ES);
+
+var ops = require('../operations/2018');
+
+var expectedMissing = [
+	'AddRestrictedFunctionProperties',
+	'AddWaiter',
+	'agent-order',
+	'AgentCanSuspend',
+	'AgentSignifier',
+	'AllocateArrayBuffer',
+	'AllocateSharedArrayBuffer',
+	'AllocateTypedArray',
+	'AllocateTypedArrayBuffer',
+	'AsyncFunctionCreate',
+	'AsyncFunctionStart',
+	'AsyncGeneratorEnqueue',
+	'AsyncGeneratorFunctionCreate',
+	'AsyncGeneratorReject',
+	'AsyncGeneratorResolve',
+	'AsyncGeneratorResumeNext',
+	'AsyncGeneratorStart',
+	'AsyncGeneratorYield',
+	'AsyncIteratorClose',
+	'AtomicLoad',
+	'AtomicReadModifyWrite',
+	'Await',
+	'BackreferenceMatcher',
+	'BlockDeclarationInstantiation',
+	'BoundFunctionCreate',
+	'Canonicalize',
+	'CaseClauseIsSelected',
+	'CharacterRange',
+	'CharacterRangeOrUnion',
+	'CharacterSetMatcher',
+	'CloneArrayBuffer',
+	'Completion',
+	'ComposeWriteEventBytes',
+	'Construct',
+	'CopyDataBlockBytes',
+	'CreateArrayFromList',
+	'CreateArrayIterator',
+	'CreateAsyncFromSyncIterator',
+	'CreateBuiltinFunction',
+	'CreateByteDataBlock',
+	'CreateDynamicFunction',
+	'CreateIntrinsics',
+	'CreateListIteratorRecord',
+	'CreateMapIterator',
+	'CreateMappedArgumentsObject',
+	'CreatePerIterationEnvironment',
+	'CreateRealm',
+	'CreateResolvingFunctions',
+	'CreateSetIterator',
+	'CreateSharedByteDataBlock',
+	'CreateStringIterator',
+	'CreateUnmappedArgumentsObject',
+	'Decode',
+	'DetachArrayBuffer',
+	'Encode',
+	'EnqueueJob',
+	'EnterCriticalSection',
+	'EnumerateObjectProperties',
+	'EscapeRegExpPattern',
+	'EvalDeclarationInstantiation',
+	'EvaluateCall',
+	'EvaluateNew',
+	'EventSet',
+	'ForBodyEvaluation',
+	'ForIn/OfBodyEvaluation',
+	'ForIn/OfHeadEvaluation',
+	'FulfillPromise',
+	'FunctionAllocate',
+	'FunctionCreate',
+	'FunctionDeclarationInstantiation',
+	'FunctionInitialize',
+	'GeneratorFunctionCreate',
+	'GeneratorResume',
+	'GeneratorResumeAbrupt',
+	'GeneratorStart',
+	'GeneratorValidate',
+	'GeneratorYield',
+	'GetActiveScriptOrModule',
+	'GetBase',
+	'GetFunctionRealm',
+	'GetGeneratorKind',
+	'GetGlobalObject',
+	'GetIdentifierReference',
+	'GetModifySetValueInBuffer',
+	'GetModuleNamespace',
+	'GetNewTarget',
+	'GetReferencedName',
+	'GetSuperConstructor',
+	'GetTemplateObject',
+	'GetThisEnvironment',
+	'GetThisValue',
+	'GetValue',
+	'GetValueFromBuffer',
+	'GetViewValue',
+	'GetWaiterList',
+	'GlobalDeclarationInstantiation',
+	'happens-before',
+	'HasPrimitiveBase',
+	'host-synchronizes-with',
+	'HostEnsureCanCompileStrings',
+	'HostEventSet',
+	'HostPromiseRejectionTracker',
+	'HostReportErrors',
+	'HostResolveImportedModule',
+	'IfAbruptRejectPromise',
+	'ImportedLocalNames',
+	'InitializeBoundName',
+	'InitializeHostDefinedRealm',
+	'InitializeReferencedBinding',
+	'InnerModuleEvaluation',
+	'InnerModuleInstantiation',
+	'IntegerIndexedElementGet',
+	'IntegerIndexedElementSet',
+	'IntegerIndexedObjectCreate',
+	'InternalizeJSONProperty',
+	'IsAnonymousFunctionDefinition',
+	'IsCompatiblePropertyDescriptor',
+	'IsDetachedBuffer',
+	'IsInTailPosition',
+	'IsLabelledFunction',
+	'IsPropertyReference',
+	'IsSharedArrayBuffer',
+	'IsStrictReference',
+	'IsSuperReference',
+	'IsUnresolvableReference',
+	'IsWordChar',
+	'LeaveCriticalSection',
+	'LocalTime',
+	'LoopContinues',
+	'MakeArgGetter',
+	'MakeArgSetter',
+	'MakeClassConstructor',
+	'MakeConstructor',
+	'MakeMethod',
+	'MakeSuperPropertyReference',
+	'max',
+	'memory-order',
+	'min',
+	'ModuleDeclarationEnvironmentSetup',
+	'ModuleExecution',
+	'ModuleNamespaceCreate',
+	'NewDeclarativeEnvironment',
+	'NewFunctionEnvironment',
+	'NewGlobalEnvironment',
+	'NewModuleEnvironment',
+	'NewObjectEnvironment',
+	'NewPromiseCapability',
+	'NormalCompletion',
+	'NumberToRawBytes',
+	'ObjectDefineProperties',
+	'OrdinaryCallBindThis',
+	'OrdinaryCallEvaluateBody',
+	'OrdinaryDelete',
+	'OrdinaryGet',
+	'OrdinaryIsExtensible',
+	'OrdinaryOwnPropertyKeys',
+	'OrdinaryPreventExtensions',
+	'OrdinarySet',
+	'OrdinarySetWithOwnDescriptor',
+	'OrdinaryToPrimitive',
+	'ParseModule',
+	'ParseScript',
+	'PerformEval',
+	'PerformPromiseAll',
+	'PerformPromiseRace',
+	'PerformPromiseThen',
+	'PrepareForOrdinaryCall',
+	'PrepareForTailCall',
+	'PromiseReactionJob',
+	'PromiseResolveThenableJob',
+	'ProxyCreate',
+	'PutValue',
+	'RawBytesToNumber',
+	'reads-bytes-from',
+	'reads-from',
+	'RegExpAlloc',
+	'RegExpBuiltinExec',
+	'RegExpCreate',
+	'RegExpInitialize',
+	'RejectPromise',
+	'RemoveWaiter',
+	'RemoveWaiters',
+	'RepeatMatcher',
+	'ResolveBinding',
+	'ResolveThisBinding',
+	'ReturnIfAbrupt',
+	'RunJobs',
+	'ScriptEvaluation',
+	'ScriptEvaluationJob',
+	'SerializeJSONArray',
+	'SerializeJSONObject',
+	'SerializeJSONProperty',
+	'SetDefaultGlobalBindings',
+	'SetImmutablePrototype',
+	'SetRealmGlobalObject',
+	'SetValueInBuffer',
+	'SetViewValue',
+	'SharedDataBlockEventSet',
+	'SortCompare',
+	'SplitMatch',
+	'StringCreate',
+	'Suspend',
+	'synchronizes-with',
+	'ThrowCompletion',
+	'TimeZoneString',
+	'TopLevelModuleEvaluationJob',
+	'TriggerPromiseReactions',
+	'TypedArrayCreate',
+	'TypedArraySpeciesCreate',
+	'UnicodeMatchProperty',
+	'UnicodeMatchPropertyValue',
+	'UpdateEmpty',
+	'UTC', // depends on LocalTZA'UTC',
+	'UTF16Decode',
+	'ValidateAtomicAccess',
+	'ValidateSharedIntegerTypedArray',
+	'ValidateTypedArray',
+	'ValueOfReadEvent',
+	'WakeWaiter',
+	'WordCharacters' // depends on Canonicalize
+];
+
+require('./tests').es2018(boundES, ops, expectedMissing);
+
+require('./helpers/runManifestTest')(require('tape'), ES, 2018);
diff --git a/src/node_modules/es-abstract/test/es2019.js b/src/node_modules/es-abstract/test/es2019.js
new file mode 100644
index 0000000..1a738e4
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es2019.js
@@ -0,0 +1,238 @@
+'use strict';
+
+var ES = require('../').ES2019;
+var boundES = require('./helpers/createBoundESNamespace')(ES);
+
+var ops = require('../operations/2019');
+
+var expectedMissing = [
+	'AddRestrictedFunctionProperties',
+	'AddWaiter',
+	'agent-order',
+	'AgentCanSuspend',
+	'AgentSignifier',
+	'AllocateArrayBuffer',
+	'AllocateSharedArrayBuffer',
+	'AllocateTypedArray',
+	'AllocateTypedArrayBuffer',
+	'AsyncFromSyncIteratorContinuation',
+	'AsyncFunctionCreate',
+	'AsyncFunctionStart',
+	'AsyncGeneratorEnqueue',
+	'AsyncGeneratorFunctionCreate',
+	'AsyncGeneratorReject',
+	'AsyncGeneratorResolve',
+	'AsyncGeneratorResumeNext',
+	'AsyncGeneratorStart',
+	'AsyncGeneratorYield',
+	'AsyncIteratorClose',
+	'AtomicLoad',
+	'AtomicReadModifyWrite',
+	'Await',
+	'BackreferenceMatcher',
+	'BlockDeclarationInstantiation',
+	'BoundFunctionCreate',
+	'Canonicalize',
+	'CaseClauseIsSelected',
+	'CharacterRange',
+	'CharacterRangeOrUnion',
+	'CharacterSetMatcher',
+	'CloneArrayBuffer',
+	'Completion',
+	'ComposeWriteEventBytes',
+	'Construct',
+	'CopyDataBlockBytes',
+	'CreateArrayFromList',
+	'CreateArrayIterator',
+	'CreateAsyncFromSyncIterator',
+	'CreateBuiltinFunction',
+	'CreateByteDataBlock',
+	'CreateDynamicFunction',
+	'CreateIntrinsics',
+	'CreateListIteratorRecord',
+	'CreateMapIterator',
+	'CreateMappedArgumentsObject',
+	'CreatePerIterationEnvironment',
+	'CreateRealm',
+	'CreateResolvingFunctions',
+	'CreateSetIterator',
+	'CreateSharedByteDataBlock',
+	'CreateStringIterator',
+	'CreateUnmappedArgumentsObject',
+	'Decode',
+	'DetachArrayBuffer',
+	'Encode',
+	'EnqueueJob',
+	'EnterCriticalSection',
+	'EnumerateObjectProperties',
+	'EscapeRegExpPattern',
+	'EvalDeclarationInstantiation',
+	'EvaluateCall',
+	'EvaluateNew',
+	'EventSet',
+	'ExecuteModule',
+	'ForBodyEvaluation',
+	'ForIn/OfBodyEvaluation',
+	'ForIn/OfHeadEvaluation',
+	'FulfillPromise',
+	'FunctionAllocate',
+	'FunctionCreate',
+	'FunctionDeclarationInstantiation',
+	'FunctionInitialize',
+	'GeneratorFunctionCreate',
+	'GeneratorResume',
+	'GeneratorResumeAbrupt',
+	'GeneratorStart',
+	'GeneratorValidate',
+	'GeneratorYield',
+	'GetActiveScriptOrModule',
+	'GetBase',
+	'GetFunctionRealm',
+	'GetGeneratorKind',
+	'GetGlobalObject',
+	'GetIdentifierReference',
+	'GetModifySetValueInBuffer',
+	'GetModuleNamespace',
+	'GetNewTarget',
+	'GetReferencedName',
+	'GetSuperConstructor',
+	'GetTemplateObject',
+	'GetThisEnvironment',
+	'GetThisValue',
+	'GetValue',
+	'GetValueFromBuffer',
+	'GetViewValue',
+	'GetWaiterList',
+	'GlobalDeclarationInstantiation',
+	'happens-before',
+	'HasPrimitiveBase',
+	'host-synchronizes-with',
+	'HostEnsureCanCompileStrings',
+	'HostEventSet',
+	'HostPromiseRejectionTracker',
+	'HostReportErrors',
+	'HostResolveImportedModule',
+	'IfAbruptRejectPromise',
+	'ImportedLocalNames',
+	'InitializeBoundName',
+	'InitializeEnvironment',
+	'InitializeHostDefinedRealm',
+	'InitializeReferencedBinding',
+	'InnerModuleEvaluation',
+	'InnerModuleInstantiation',
+	'IntegerIndexedElementGet',
+	'IntegerIndexedElementSet',
+	'IntegerIndexedObjectCreate',
+	'InternalizeJSONProperty',
+	'IsAnonymousFunctionDefinition',
+	'IsCompatiblePropertyDescriptor',
+	'IsDetachedBuffer',
+	'IsInTailPosition',
+	'IsLabelledFunction',
+	'IsPropertyReference',
+	'IsSharedArrayBuffer',
+	'IsStrictReference',
+	'IsSuperReference',
+	'IsUnresolvableReference',
+	'IsWordChar',
+	'LeaveCriticalSection',
+	'LocalTime',
+	'LoopContinues',
+	'MakeArgGetter',
+	'MakeArgSetter',
+	'MakeClassConstructor',
+	'MakeConstructor',
+	'MakeMethod',
+	'MakeSuperPropertyReference',
+	'max',
+	'memory-order',
+	'min',
+	'ModuleDeclarationEnvironmentSetup',
+	'ModuleExecution',
+	'ModuleNamespaceCreate',
+	'NewDeclarativeEnvironment',
+	'NewFunctionEnvironment',
+	'NewGlobalEnvironment',
+	'NewModuleEnvironment',
+	'NewObjectEnvironment',
+	'NewPromiseCapability',
+	'NormalCompletion',
+	'NotifyWaiter',
+	'NumberToRawBytes',
+	'ObjectDefineProperties',
+	'OrdinaryCallBindThis',
+	'OrdinaryCallEvaluateBody',
+	'OrdinaryDelete',
+	'OrdinaryGet',
+	'OrdinaryIsExtensible',
+	'OrdinaryOwnPropertyKeys',
+	'OrdinaryPreventExtensions',
+	'OrdinarySet',
+	'OrdinarySetWithOwnDescriptor',
+	'OrdinaryToPrimitive',
+	'ParseModule',
+	'ParseScript',
+	'PerformEval',
+	'PerformPromiseAll',
+	'PerformPromiseRace',
+	'PerformPromiseThen',
+	'PrepareForOrdinaryCall',
+	'PrepareForTailCall',
+	'PromiseReactionJob',
+	'PromiseResolveThenableJob',
+	'ProxyCreate',
+	'PutValue',
+	'RawBytesToNumber',
+	'reads-bytes-from',
+	'reads-from',
+	'RegExpAlloc',
+	'RegExpBuiltinExec',
+	'RegExpCreate',
+	'RegExpInitialize',
+	'RejectPromise',
+	'RemoveWaiter',
+	'RemoveWaiters',
+	'RepeatMatcher',
+	'ResolveBinding',
+	'ResolveThisBinding',
+	'ReturnIfAbrupt',
+	'RunJobs',
+	'ScriptEvaluation',
+	'ScriptEvaluationJob',
+	'SerializeJSONArray',
+	'SerializeJSONObject',
+	'SerializeJSONProperty',
+	'SetDefaultGlobalBindings',
+	'SetImmutablePrototype',
+	'SetRealmGlobalObject',
+	'SetValueInBuffer',
+	'SetViewValue',
+	'SharedDataBlockEventSet',
+	'SortCompare',
+	'SplitMatch',
+	'StringCreate',
+	'Suspend',
+	'SynchronizeEventSet',
+	'synchronizes-with',
+	'ThrowCompletion',
+	'TimeZoneString',
+	'TopLevelModuleEvaluationJob',
+	'TriggerPromiseReactions',
+	'TypedArrayCreate',
+	'TypedArraySpeciesCreate',
+	'UnicodeMatchProperty',
+	'UnicodeMatchPropertyValue',
+	'UpdateEmpty',
+	'UTC', // depends on LocalTZA'UTC',
+	'UTF16Decode',
+	'ValidateAtomicAccess',
+	'ValidateSharedIntegerTypedArray',
+	'ValidateTypedArray',
+	'ValueOfReadEvent',
+	'WakeWaiter',
+	'WordCharacters' // depends on Canonicalize
+];
+
+require('./tests').es2019(boundES, ops, expectedMissing);
+
+require('./helpers/runManifestTest')(require('tape'), ES, 2019);
diff --git a/src/node_modules/es-abstract/test/es2020.js b/src/node_modules/es-abstract/test/es2020.js
new file mode 100644
index 0000000..3b9cd5c
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es2020.js
@@ -0,0 +1,267 @@
+'use strict';
+
+var ES = require('../').ES2020;
+var boundES = require('./helpers/createBoundESNamespace')(ES);
+
+var ops = require('../operations/2020');
+
+var expectedMissing = [
+	'AddRestrictedFunctionProperties',
+	'AddWaiter',
+	'agent-order',
+	'AgentCanSuspend',
+	'AgentSignifier',
+	'AllocateArrayBuffer',
+	'AllocateSharedArrayBuffer',
+	'AllocateTypedArray',
+	'AllocateTypedArrayBuffer',
+	'AsyncFromSyncIteratorContinuation',
+	'AsyncFunctionCreate',
+	'AsyncFunctionStart',
+	'AsyncGeneratorEnqueue',
+	'AsyncGeneratorFunctionCreate',
+	'AsyncGeneratorReject',
+	'AsyncGeneratorResolve',
+	'AsyncGeneratorResumeNext',
+	'AsyncGeneratorStart',
+	'AsyncGeneratorYield',
+	'AsyncIteratorClose',
+	'AtomicLoad',
+	'AtomicReadModifyWrite',
+	'Await',
+	'BackreferenceMatcher',
+	'BigInt::toString',
+	'BlockDeclarationInstantiation',
+	'BoundFunctionCreate',
+	'Canonicalize',
+	'CaseClauseIsSelected',
+	'CharacterRange',
+	'CharacterRangeOrUnion',
+	'CharacterSetMatcher',
+	'CloneArrayBuffer',
+	'Completion',
+	'ComposeWriteEventBytes',
+	'Construct',
+	'CopyDataBlockBytes',
+	'CreateArrayFromList',
+	'CreateArrayIterator',
+	'CreateAsyncFromSyncIterator',
+	'CreateBuiltinFunction',
+	'CreateByteDataBlock',
+	'CreateDynamicFunction',
+	'CreateForInIterator',
+	'CreateIntrinsics',
+	'CreateListIteratorRecord',
+	'CreateMapIterator',
+	'CreateMappedArgumentsObject',
+	'CreatePerIterationEnvironment',
+	'CreateRealm',
+	'CreateRegExpStringIterator',
+	'CreateResolvingFunctions',
+	'CreateSetIterator',
+	'CreateSharedByteDataBlock',
+	'CreateStringIterator',
+	'CreateUnmappedArgumentsObject',
+	'Decode',
+	'DetachArrayBuffer',
+	'Encode',
+	'EnqueueJob',
+	'EnterCriticalSection',
+	'EnumerateObjectProperties',
+	'EscapeRegExpPattern',
+	'EvalDeclarationInstantiation',
+	'EvaluateCall',
+	'EvaluateNew',
+	'EvaluatePropertyAccessWithExpressionKey',
+	'EvaluatePropertyAccessWithIdentifierKey',
+	'EventSet',
+	'ExecuteModule',
+	'FinishDynamicImport',
+	'ForBodyEvaluation',
+	'ForIn/OfBodyEvaluation',
+	'ForIn/OfHeadEvaluation',
+	'FulfillPromise',
+	'FunctionAllocate',
+	'FunctionCreate',
+	'FunctionDeclarationInstantiation',
+	'FunctionInitialize',
+	'GeneratorFunctionCreate',
+	'GeneratorResume',
+	'GeneratorResumeAbrupt',
+	'GeneratorStart',
+	'GeneratorValidate',
+	'GeneratorYield',
+	'GetActiveScriptOrModule',
+	'GetBase',
+	'GetFunctionRealm',
+	'GetGeneratorKind',
+	'GetGlobalObject',
+	'GetIdentifierReference',
+	'GetModifySetValueInBuffer',
+	'GetModuleNamespace',
+	'GetNewTarget',
+	'GetReferencedName',
+	'GetSuperConstructor',
+	'GetTemplateObject',
+	'GetThisEnvironment',
+	'GetThisValue',
+	'GetValue',
+	'GetValueFromBuffer',
+	'GetViewValue',
+	'GetWaiterList',
+	'GlobalDeclarationInstantiation',
+	'happens-before',
+	'HasPrimitiveBase',
+	'host-synchronizes-with',
+	'HostEnqueuePromiseJob',
+	'HostEnsureCanCompileStrings',
+	'HostEventSet',
+	'HostFinalizeImportMeta',
+	'HostGetImportMetaProperties',
+	'HostImportModuleDynamically',
+	'HostPromiseRejectionTracker',
+	'HostReportErrors',
+	'HostResolveImportedModule',
+	'IfAbruptRejectPromise',
+	'ImportedLocalNames',
+	'InitializeBoundName',
+	'InitializeEnvironment',
+	'InitializeHostDefinedRealm',
+	'InitializeReferencedBinding',
+	'InnerModuleEvaluation',
+	'InnerModuleInstantiation',
+	'InnerModuleLinking',
+	'IntegerIndexedElementGet',
+	'IntegerIndexedElementSet',
+	'IntegerIndexedObjectCreate',
+	'InternalizeJSONProperty',
+	'IsAnonymousFunctionDefinition',
+	'IsCompatiblePropertyDescriptor',
+	'IsDetachedBuffer',
+	'IsInTailPosition',
+	'IsLabelledFunction',
+	'IsPropertyReference',
+	'IsSharedArrayBuffer',
+	'IsStrictReference',
+	'IsSuperReference',
+	'IsUnresolvableReference',
+	'IsValidIntegerIndex',
+	'IsValidRegularExpressionLiteral',
+	'IsWordChar',
+	'LeaveCriticalSection',
+	'LocalTime',
+	'LocalTZA',
+	'LoopContinues',
+	'MakeArgGetter',
+	'MakeArgSetter',
+	'MakeBasicObject',
+	'MakeClassConstructor',
+	'MakeConstructor',
+	'MakeMethod',
+	'MakeSuperPropertyReference',
+	'max',
+	'memory-order',
+	'min',
+	'ModuleDeclarationEnvironmentSetup',
+	'ModuleExecution',
+	'ModuleNamespaceCreate',
+	'NewDeclarativeEnvironment',
+	'NewFunctionEnvironment',
+	'NewGlobalEnvironment',
+	'NewModuleEnvironment',
+	'NewObjectEnvironment',
+	'NewPromiseCapability',
+	'NewPromiseReactionJob',
+	'NewPromiseResolveThenableJob',
+	'NormalCompletion',
+	'NotifyWaiter',
+	'Number::toString',
+	'NumberToBigInt',
+	'NumberToRawBytes',
+	'NumericToRawBytes',
+	'ObjectDefineProperties',
+	'OrdinaryCallBindThis',
+	'OrdinaryCallEvaluateBody',
+	'OrdinaryDelete',
+	'OrdinaryFunctionCreate',
+	'OrdinaryGet',
+	'OrdinaryIsExtensible',
+	'OrdinaryOwnPropertyKeys',
+	'OrdinaryPreventExtensions',
+	'OrdinarySet',
+	'OrdinarySetWithOwnDescriptor',
+	'OrdinaryToPrimitive',
+	'ParseModule',
+	'ParseScript',
+	'PerformEval',
+	'PerformPromiseAll',
+	'PerformPromiseAllSettled',
+	'PerformPromiseRace',
+	'PerformPromiseThen',
+	'PrepareForOrdinaryCall',
+	'PrepareForTailCall',
+	'PromiseReactionJob',
+	'PromiseResolveThenableJob',
+	'ProxyCreate',
+	'PutValue',
+	'RawBytesToNumber',
+	'RawBytesToNumeric',
+	'reads-bytes-from',
+	'reads-from',
+	'RegExpAlloc',
+	'RegExpBuiltinExec',
+	'RegExpCreate',
+	'RegExpInitialize',
+	'RejectPromise',
+	'RemoveWaiter',
+	'RemoveWaiters',
+	'RepeatMatcher',
+	'RequireInternalSlot',
+	'ResolveBinding',
+	'ResolveThisBinding',
+	'ReturnIfAbrupt',
+	'RunJobs',
+	'ScriptEvaluation',
+	'ScriptEvaluationJob',
+	'SerializeJSONArray',
+	'SerializeJSONObject',
+	'SerializeJSONProperty',
+	'SetDefaultGlobalBindings',
+	'SetImmutablePrototype',
+	'SetRealmGlobalObject',
+	'SetValueInBuffer',
+	'SetViewValue',
+	'SharedDataBlockEventSet',
+	'SortCompare',
+	'SplitMatch',
+	'StringCreate',
+	'StringToBigInt',
+	'Suspend',
+	'SynchronizeEventSet',
+	'synchronizes-with',
+	'ThrowCompletion',
+	'TimeZoneString',
+	'ToBigInt',
+	'ToBigInt64',
+	'ToBigUint64',
+	'TopLevelModuleEvaluationJob',
+	'TriggerPromiseReactions',
+	'TypedArrayCreate',
+	'TypedArraySpeciesCreate',
+	'UnicodeMatchProperty',
+	'UnicodeMatchPropertyValue',
+	'UpdateEmpty',
+	'UTC', // depends on LocalTZA
+	'UTF16Decode',
+	'UTF16Encode',
+	'ValidateAtomicAccess',
+	'ValidateSharedIntegerTypedArray',
+	'ValidateTypedArray',
+	'ValueOfReadEvent',
+	'WakeWaiter',
+	'WordCharacters' // depends on Canonicalize
+];
+
+require('./tests').es2020(boundES, ops, expectedMissing);
+
+require('./helpers/runManifestTest')(require('tape'), ES, 2020);
diff --git a/src/node_modules/es-abstract/test/es5.js b/src/node_modules/es-abstract/test/es5.js
new file mode 100644
index 0000000..6647a1b
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es5.js
@@ -0,0 +1,786 @@
+'use strict';
+
+var ES = require('../').ES5;
+var test = require('tape');
+
+var forEach = require('foreach');
+var is = require('object-is');
+var debug = require('object-inspect');
+
+var v = require('./helpers/values');
+
+require('./helpers/runManifestTest')(test, ES, 5);
+
+ES = require('./helpers/createBoundESNamespace')(ES);
+
+test('ToPrimitive', function (t) {
+	t.test('primitives', function (st) {
+		var testPrimitive = function (primitive) {
+			st.ok(is(ES.ToPrimitive(primitive), primitive), debug(primitive) + ' is returned correctly');
+		};
+		forEach(v.primitives, testPrimitive);
+		st.end();
+	});
+
+	t.test('objects', function (st) {
+		st.equal(ES.ToPrimitive(v.coercibleObject), v.coercibleObject.valueOf(), 'coercibleObject coerces to valueOf');
+		st.equal(ES.ToPrimitive(v.coercibleObject, Number), v.coercibleObject.valueOf(), 'coercibleObject with hint Number coerces to valueOf');
+		st.equal(ES.ToPrimitive(v.coercibleObject, String), v.coercibleObject.toString(), 'coercibleObject with hint String coerces to toString');
+		st.equal(ES.ToPrimitive(v.coercibleFnObject), v.coercibleFnObject.toString(), 'coercibleFnObject coerces to toString');
+		st.equal(ES.ToPrimitive(v.toStringOnlyObject), v.toStringOnlyObject.toString(), 'toStringOnlyObject returns toString');
+		st.equal(ES.ToPrimitive(v.valueOfOnlyObject), v.valueOfOnlyObject.valueOf(), 'valueOfOnlyObject returns valueOf');
+		st.equal(ES.ToPrimitive({}), '[object Object]', '{} with no hint coerces to Object#toString');
+		st.equal(ES.ToPrimitive({}, String), '[object Object]', '{} with hint String coerces to Object#toString');
+		st.equal(ES.ToPrimitive({}, Number), '[object Object]', '{} with hint Number coerces to Object#toString');
+		st['throws'](function () { return ES.ToPrimitive(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws a TypeError');
+		st['throws'](function () { return ES.ToPrimitive(v.uncoercibleFnObject); }, TypeError, 'uncoercibleFnObject throws a TypeError');
+		st.end();
+	});
+
+	t.end();
+});
+
+test('ToBoolean', function (t) {
+	t.equal(false, ES.ToBoolean(undefined), 'undefined coerces to false');
+	t.equal(false, ES.ToBoolean(null), 'null coerces to false');
+	t.equal(false, ES.ToBoolean(false), 'false returns false');
+	t.equal(true, ES.ToBoolean(true), 'true returns true');
+	forEach([0, -0, NaN], function (falsyNumber) {
+		t.equal(false, ES.ToBoolean(falsyNumber), 'falsy number ' + falsyNumber + ' coerces to false');
+	});
+	forEach([Infinity, 42, 1, -Infinity], function (truthyNumber) {
+		t.equal(true, ES.ToBoolean(truthyNumber), 'truthy number ' + truthyNumber + ' coerces to true');
+	});
+	t.equal(false, ES.ToBoolean(''), 'empty string coerces to false');
+	t.equal(true, ES.ToBoolean('foo'), 'nonempty string coerces to true');
+	forEach(v.objects, function (obj) {
+		t.equal(true, ES.ToBoolean(obj), 'object coerces to true');
+	});
+	t.equal(true, ES.ToBoolean(v.uncoercibleObject), 'uncoercibleObject coerces to true');
+	t.end();
+});
+
+test('ToNumber', function (t) {
+	t.ok(is(NaN, ES.ToNumber(undefined)), 'undefined coerces to NaN');
+	t.ok(is(ES.ToNumber(null), 0), 'null coerces to +0');
+	t.ok(is(ES.ToNumber(false), 0), 'false coerces to +0');
+	t.equal(1, ES.ToNumber(true), 'true coerces to 1');
+	t.ok(is(NaN, ES.ToNumber(NaN)), 'NaN returns itself');
+	forEach([0, -0, 42, Infinity, -Infinity], function (num) {
+		t.equal(num, ES.ToNumber(num), num + ' returns itself');
+	});
+	forEach(['foo', '0', '4a', '2.0', 'Infinity', '-Infinity'], function (numString) {
+		t.ok(is(+numString, ES.ToNumber(numString)), '"' + numString + '" coerces to ' + Number(numString));
+	});
+	forEach(v.objects, function (object) {
+		t.ok(is(ES.ToNumber(object), ES.ToNumber(ES.ToPrimitive(object))), 'object ' + object + ' coerces to same as ToPrimitive of object does');
+	});
+	t['throws'](function () { return ES.ToNumber(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+	t.end();
+});
+
+test('ToInteger', function (t) {
+	t.ok(is(0, ES.ToInteger(NaN)), 'NaN coerces to +0');
+	forEach([0, Infinity, 42], function (num) {
+		t.ok(is(num, ES.ToInteger(num)), num + ' returns itself');
+		t.ok(is(-num, ES.ToInteger(-num)), '-' + num + ' returns itself');
+	});
+	t.equal(3, ES.ToInteger(Math.PI), 'pi returns 3');
+	t['throws'](function () { return ES.ToInteger(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+	t.end();
+});
+
+test('ToInt32', function (t) {
+	t.ok(is(0, ES.ToInt32(NaN)), 'NaN coerces to +0');
+	forEach([0, Infinity], function (num) {
+		t.ok(is(0, ES.ToInt32(num)), num + ' returns +0');
+		t.ok(is(0, ES.ToInt32(-num)), '-' + num + ' returns +0');
+	});
+	t['throws'](function () { return ES.ToInt32(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+	t.ok(is(ES.ToInt32(0x100000000), 0), '2^32 returns +0');
+	t.ok(is(ES.ToInt32(0x100000000 - 1), -1), '2^32 - 1 returns -1');
+	t.ok(is(ES.ToInt32(0x80000000), -0x80000000), '2^31 returns -2^31');
+	t.ok(is(ES.ToInt32(0x80000000 - 1), 0x80000000 - 1), '2^31 - 1 returns 2^31 - 1');
+	forEach([0, Infinity, NaN, 0x100000000, 0x80000000, 0x10000, 0x42], function (num) {
+		t.ok(is(ES.ToInt32(num), ES.ToInt32(ES.ToUint32(num))), 'ToInt32(x) === ToInt32(ToUint32(x)) for 0x' + num.toString(16));
+		t.ok(is(ES.ToInt32(-num), ES.ToInt32(ES.ToUint32(-num))), 'ToInt32(x) === ToInt32(ToUint32(x)) for -0x' + num.toString(16));
+	});
+	t.end();
+});
+
+test('ToUint32', function (t) {
+	t.ok(is(0, ES.ToUint32(NaN)), 'NaN coerces to +0');
+	forEach([0, Infinity], function (num) {
+		t.ok(is(0, ES.ToUint32(num)), num + ' returns +0');
+		t.ok(is(0, ES.ToUint32(-num)), '-' + num + ' returns +0');
+	});
+	t['throws'](function () { return ES.ToUint32(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+	t.ok(is(ES.ToUint32(0x100000000), 0), '2^32 returns +0');
+	t.ok(is(ES.ToUint32(0x100000000 - 1), 0x100000000 - 1), '2^32 - 1 returns 2^32 - 1');
+	t.ok(is(ES.ToUint32(0x80000000), 0x80000000), '2^31 returns 2^31');
+	t.ok(is(ES.ToUint32(0x80000000 - 1), 0x80000000 - 1), '2^31 - 1 returns 2^31 - 1');
+	forEach([0, Infinity, NaN, 0x100000000, 0x80000000, 0x10000, 0x42], function (num) {
+		t.ok(is(ES.ToUint32(num), ES.ToUint32(ES.ToInt32(num))), 'ToUint32(x) === ToUint32(ToInt32(x)) for 0x' + num.toString(16));
+		t.ok(is(ES.ToUint32(-num), ES.ToUint32(ES.ToInt32(-num))), 'ToUint32(x) === ToUint32(ToInt32(x)) for -0x' + num.toString(16));
+	});
+	t.end();
+});
+
+test('ToUint16', function (t) {
+	t.ok(is(0, ES.ToUint16(NaN)), 'NaN coerces to +0');
+	forEach([0, Infinity], function (num) {
+		t.ok(is(0, ES.ToUint16(num)), num + ' returns +0');
+		t.ok(is(0, ES.ToUint16(-num)), '-' + num + ' returns +0');
+	});
+	t['throws'](function () { return ES.ToUint16(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+	t.ok(is(ES.ToUint16(0x100000000), 0), '2^32 returns +0');
+	t.ok(is(ES.ToUint16(0x100000000 - 1), 0x10000 - 1), '2^32 - 1 returns 2^16 - 1');
+	t.ok(is(ES.ToUint16(0x80000000), 0), '2^31 returns +0');
+	t.ok(is(ES.ToUint16(0x80000000 - 1), 0x10000 - 1), '2^31 - 1 returns 2^16 - 1');
+	t.ok(is(ES.ToUint16(0x10000), 0), '2^16 returns +0');
+	t.ok(is(ES.ToUint16(0x10000 - 1), 0x10000 - 1), '2^16 - 1 returns 2^16 - 1');
+	t.end();
+});
+
+test('ToString', function (t) {
+	t['throws'](function () { return ES.ToString(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+	t.end();
+});
+
+test('ToObject', function (t) {
+	t['throws'](function () { return ES.ToObject(undefined); }, TypeError, 'undefined throws');
+	t['throws'](function () { return ES.ToObject(null); }, TypeError, 'null throws');
+	forEach(v.numbers, function (number) {
+		var obj = ES.ToObject(number);
+		t.equal(typeof obj, 'object', 'number ' + number + ' coerces to object');
+		t.equal(true, obj instanceof Number, 'object of ' + number + ' is Number object');
+		t.ok(is(obj.valueOf(), number), 'object of ' + number + ' coerces to ' + number);
+	});
+	t.end();
+});
+
+test('CheckObjectCoercible', function (t) {
+	t['throws'](function () { return ES.CheckObjectCoercible(undefined); }, TypeError, 'undefined throws');
+	t['throws'](function () { return ES.CheckObjectCoercible(null); }, TypeError, 'null throws');
+	var checkCoercible = function (value) {
+		t.doesNotThrow(function () { return ES.CheckObjectCoercible(value); }, debug(value) + ' does not throw');
+	};
+	forEach(v.objects.concat(v.nonNullPrimitives), checkCoercible);
+	t.end();
+});
+
+test('IsCallable', function (t) {
+	t.equal(true, ES.IsCallable(function () {}), 'function is callable');
+	var nonCallables = [/a/g, {}, Object.prototype, NaN].concat(v.primitives);
+	forEach(nonCallables, function (nonCallable) {
+		t.equal(false, ES.IsCallable(nonCallable), debug(nonCallable) + ' is not callable');
+	});
+	t.end();
+});
+
+test('SameValue', function (t) {
+	t.equal(true, ES.SameValue(NaN, NaN), 'NaN is SameValue as NaN');
+	t.equal(false, ES.SameValue(0, -0), '+0 is not SameValue as -0');
+	forEach(v.objects.concat(v.primitives), function (val) {
+		t.equal(val === val, ES.SameValue(val, val), debug(val) + ' is SameValue to itself');
+	});
+	t.end();
+});
+
+test('Type', function (t) {
+	t.equal(ES.Type(), 'Undefined', 'Type() is Undefined');
+	t.equal(ES.Type(undefined), 'Undefined', 'Type(undefined) is Undefined');
+	t.equal(ES.Type(null), 'Null', 'Type(null) is Null');
+	t.equal(ES.Type(true), 'Boolean', 'Type(true) is Boolean');
+	t.equal(ES.Type(false), 'Boolean', 'Type(false) is Boolean');
+	t.equal(ES.Type(0), 'Number', 'Type(0) is Number');
+	t.equal(ES.Type(NaN), 'Number', 'Type(NaN) is Number');
+	t.equal(ES.Type('abc'), 'String', 'Type("abc") is String');
+	t.equal(ES.Type(function () {}), 'Object', 'Type(function () {}) is Object');
+	t.equal(ES.Type({}), 'Object', 'Type({}) is Object');
+	t.end();
+});
+
+test('IsPropertyDescriptor', function (t) {
+	forEach(v.primitives, function (primitive) {
+		t.equal(ES.IsPropertyDescriptor(primitive), false, debug(primitive) + ' is not a Property Descriptor');
+	});
+
+	t.equal(ES.IsPropertyDescriptor({ invalid: true }), false, 'invalid keys not allowed on a Property Descriptor');
+
+	t.equal(ES.IsPropertyDescriptor({}), true, 'empty object is an incomplete Property Descriptor');
+
+	t.equal(ES.IsPropertyDescriptor(v.accessorDescriptor()), true, 'accessor descriptor is a Property Descriptor');
+	t.equal(ES.IsPropertyDescriptor(v.mutatorDescriptor()), true, 'mutator descriptor is a Property Descriptor');
+	t.equal(ES.IsPropertyDescriptor(v.dataDescriptor()), true, 'data descriptor is a Property Descriptor');
+	t.equal(ES.IsPropertyDescriptor(v.genericDescriptor()), true, 'generic descriptor is a Property Descriptor');
+
+	t['throws'](
+		function () { ES.IsPropertyDescriptor(v.bothDescriptor()); },
+		TypeError,
+		'a Property Descriptor can not be both a Data and an Accessor Descriptor'
+	);
+
+	t['throws'](
+		function () { ES.IsPropertyDescriptor(v.bothDescriptorWritable()); },
+		TypeError,
+		'a Property Descriptor can not be both a Data and an Accessor Descriptor'
+	);
+
+	t.end();
+});
+
+test('IsAccessorDescriptor', function (t) {
+	forEach(v.nonNullPrimitives.concat(null), function (primitive) {
+		t['throws'](function () { ES.IsAccessorDescriptor(primitive); }, TypeError, debug(primitive) + ' is not a Property Descriptor');
+	});
+
+	t.equal(ES.IsAccessorDescriptor(), false, 'no value is not an Accessor Descriptor');
+	t.equal(ES.IsAccessorDescriptor(undefined), false, 'undefined value is not an Accessor Descriptor');
+
+	t.equal(ES.IsAccessorDescriptor(v.accessorDescriptor()), true, 'accessor descriptor is an Accessor Descriptor');
+	t.equal(ES.IsAccessorDescriptor(v.mutatorDescriptor()), true, 'mutator descriptor is an Accessor Descriptor');
+	t.equal(ES.IsAccessorDescriptor(v.dataDescriptor()), false, 'data descriptor is not an Accessor Descriptor');
+	t.equal(ES.IsAccessorDescriptor(v.genericDescriptor()), false, 'generic descriptor is not an Accessor Descriptor');
+
+	t.end();
+});
+
+test('IsDataDescriptor', function (t) {
+	forEach(v.nonNullPrimitives.concat(null), function (primitive) {
+		t['throws'](function () { ES.IsDataDescriptor(primitive); }, TypeError, debug(primitive) + ' is not a Property Descriptor');
+	});
+
+	t.equal(ES.IsDataDescriptor(), false, 'no value is not a Data Descriptor');
+	t.equal(ES.IsDataDescriptor(undefined), false, 'undefined value is not a Data Descriptor');
+
+	t.equal(ES.IsDataDescriptor(v.accessorDescriptor()), false, 'accessor descriptor is not a Data Descriptor');
+	t.equal(ES.IsDataDescriptor(v.mutatorDescriptor()), false, 'mutator descriptor is not a Data Descriptor');
+	t.equal(ES.IsDataDescriptor(v.dataDescriptor()), true, 'data descriptor is a Data Descriptor');
+	t.equal(ES.IsDataDescriptor(v.genericDescriptor()), false, 'generic descriptor is not a Data Descriptor');
+
+	t.end();
+});
+
+test('IsGenericDescriptor', function (t) {
+	forEach(v.nonNullPrimitives.concat(null), function (primitive) {
+		t['throws'](
+			function () { ES.IsGenericDescriptor(primitive); },
+			TypeError,
+			debug(primitive) + ' is not a Property Descriptor'
+		);
+	});
+
+	t.equal(ES.IsGenericDescriptor(), false, 'no value is not a Data Descriptor');
+	t.equal(ES.IsGenericDescriptor(undefined), false, 'undefined value is not a Data Descriptor');
+
+	t.equal(ES.IsGenericDescriptor(v.accessorDescriptor()), false, 'accessor descriptor is not a generic Descriptor');
+	t.equal(ES.IsGenericDescriptor(v.mutatorDescriptor()), false, 'mutator descriptor is not a generic Descriptor');
+	t.equal(ES.IsGenericDescriptor(v.dataDescriptor()), false, 'data descriptor is not a generic Descriptor');
+
+	t.equal(ES.IsGenericDescriptor(v.genericDescriptor()), true, 'generic descriptor is a generic Descriptor');
+
+	t.end();
+});
+
+test('FromPropertyDescriptor', function (t) {
+	t.equal(ES.FromPropertyDescriptor(), undefined, 'no value begets undefined');
+	t.equal(ES.FromPropertyDescriptor(undefined), undefined, 'undefined value begets undefined');
+
+	forEach(v.nonNullPrimitives.concat(null), function (primitive) {
+		t['throws'](
+			function () { ES.FromPropertyDescriptor(primitive); },
+			TypeError,
+			debug(primitive) + ' is not a Property Descriptor'
+		);
+	});
+
+	var accessor = v.accessorDescriptor();
+	t.deepEqual(ES.FromPropertyDescriptor(accessor), {
+		get: accessor['[[Get]]'],
+		set: accessor['[[Set]]'],
+		enumerable: !!accessor['[[Enumerable]]'],
+		configurable: !!accessor['[[Configurable]]']
+	});
+
+	var mutator = v.mutatorDescriptor();
+	t.deepEqual(ES.FromPropertyDescriptor(mutator), {
+		get: mutator['[[Get]]'],
+		set: mutator['[[Set]]'],
+		enumerable: !!mutator['[[Enumerable]]'],
+		configurable: !!mutator['[[Configurable]]']
+	});
+	var data = v.dataDescriptor();
+	t.deepEqual(ES.FromPropertyDescriptor(data), {
+		value: data['[[Value]]'],
+		writable: data['[[Writable]]'],
+		enumerable: !!data['[[Enumerable]]'],
+		configurable: !!data['[[Configurable]]']
+	});
+
+	t['throws'](
+		function () { ES.FromPropertyDescriptor(v.genericDescriptor()); },
+		TypeError,
+		'a complete Property Descriptor is required'
+	);
+
+	t.end();
+});
+
+test('ToPropertyDescriptor', function (t) {
+	forEach(v.nonNullPrimitives.concat(null), function (primitive) {
+		t['throws'](
+			function () { ES.ToPropertyDescriptor(primitive); },
+			TypeError,
+			debug(primitive) + ' is not an Object'
+		);
+	});
+
+	var accessor = v.accessorDescriptor();
+	t.deepEqual(ES.ToPropertyDescriptor({
+		get: accessor['[[Get]]'],
+		enumerable: !!accessor['[[Enumerable]]'],
+		configurable: !!accessor['[[Configurable]]']
+	}), accessor);
+
+	var mutator = v.mutatorDescriptor();
+	t.deepEqual(ES.ToPropertyDescriptor({
+		set: mutator['[[Set]]'],
+		enumerable: !!mutator['[[Enumerable]]'],
+		configurable: !!mutator['[[Configurable]]']
+	}), mutator);
+
+	var data = v.descriptors.nonConfigurable(v.dataDescriptor());
+	t.deepEqual(ES.ToPropertyDescriptor({
+		value: data['[[Value]]'],
+		writable: data['[[Writable]]'],
+		configurable: !!data['[[Configurable]]']
+	}), data);
+
+	var both = v.bothDescriptor();
+	t['throws'](
+		function () {
+			ES.ToPropertyDescriptor({ get: both['[[Get]]'], value: both['[[Value]]'] });
+		},
+		TypeError,
+		'data and accessor descriptors are mutually exclusive'
+	);
+
+	t['throws'](
+		function () { ES.ToPropertyDescriptor({ get: 'not callable' }); },
+		TypeError,
+		'"get" must be undefined or callable'
+	);
+
+	t['throws'](
+		function () { ES.ToPropertyDescriptor({ set: 'not callable' }); },
+		TypeError,
+		'"set" must be undefined or callable'
+	);
+
+	t.end();
+});
+
+test('Abstract Equality Comparison', function (t) {
+	t.test('same types use ===', function (st) {
+		forEach(v.primitives.concat(v.objects), function (value) {
+			st.equal(ES['Abstract Equality Comparison'](value, value), value === value, debug(value) + ' is abstractly equal to itself');
+		});
+		st.end();
+	});
+
+	t.test('different types coerce', function (st) {
+		var pairs = [
+			[null, undefined],
+			[3, '3'],
+			[true, '3'],
+			[true, 3],
+			[false, 0],
+			[false, '0'],
+			[3, [3]],
+			['3', [3]],
+			[true, [1]],
+			[false, [0]],
+			[String(v.coercibleObject), v.coercibleObject],
+			[Number(String(v.coercibleObject)), v.coercibleObject],
+			[Number(v.coercibleObject), v.coercibleObject],
+			[String(Number(v.coercibleObject)), v.coercibleObject]
+		];
+		forEach(pairs, function (pair) {
+			var a = pair[0];
+			var b = pair[1];
+			// eslint-disable-next-line eqeqeq
+			st.equal(ES['Abstract Equality Comparison'](a, b), a == b, debug(a) + ' == ' + debug(b));
+			// eslint-disable-next-line eqeqeq
+			st.equal(ES['Abstract Equality Comparison'](b, a), b == a, debug(b) + ' == ' + debug(a));
+		});
+		st.end();
+	});
+
+	t.end();
+});
+
+test('Strict Equality Comparison', function (t) {
+	t.test('same types use ===', function (st) {
+		forEach(v.primitives.concat(v.objects), function (value) {
+			st.equal(ES['Strict Equality Comparison'](value, value), value === value, debug(value) + ' is strictly equal to itself');
+		});
+		st.end();
+	});
+
+	t.test('different types are not ===', function (st) {
+		var pairs = [
+			[null, undefined],
+			[3, '3'],
+			[true, '3'],
+			[true, 3],
+			[false, 0],
+			[false, '0'],
+			[3, [3]],
+			['3', [3]],
+			[true, [1]],
+			[false, [0]],
+			[String(v.coercibleObject), v.coercibleObject],
+			[Number(String(v.coercibleObject)), v.coercibleObject],
+			[Number(v.coercibleObject), v.coercibleObject],
+			[String(Number(v.coercibleObject)), v.coercibleObject]
+		];
+		forEach(pairs, function (pair) {
+			var a = pair[0];
+			var b = pair[1];
+			st.equal(ES['Strict Equality Comparison'](a, b), a === b, debug(a) + ' === ' + debug(b));
+			st.equal(ES['Strict Equality Comparison'](b, a), b === a, debug(b) + ' === ' + debug(a));
+		});
+		st.end();
+	});
+
+	t.end();
+});
+
+test('Abstract Relational Comparison', function (t) {
+	t.test('at least one operand is NaN', function (st) {
+		st.equal(ES['Abstract Relational Comparison'](NaN, {}, true), undefined, 'LeftFirst: first is NaN, returns undefined');
+		st.equal(ES['Abstract Relational Comparison']({}, NaN, true), undefined, 'LeftFirst: second is NaN, returns undefined');
+		st.equal(ES['Abstract Relational Comparison'](NaN, {}, false), undefined, '!LeftFirst: first is NaN, returns undefined');
+		st.equal(ES['Abstract Relational Comparison']({}, NaN, false), undefined, '!LeftFirst: second is NaN, returns undefined');
+		st.end();
+	});
+
+	t.equal(ES['Abstract Relational Comparison'](3, 4, true), true, 'LeftFirst: 3 is less than 4');
+	t.equal(ES['Abstract Relational Comparison'](4, 3, true), false, 'LeftFirst: 3 is not less than 4');
+	t.equal(ES['Abstract Relational Comparison'](3, 4, false), true, '!LeftFirst: 3 is less than 4');
+	t.equal(ES['Abstract Relational Comparison'](4, 3, false), false, '!LeftFirst: 3 is not less than 4');
+
+	t.equal(ES['Abstract Relational Comparison']('3', '4', true), true, 'LeftFirst: "3" is less than "4"');
+	t.equal(ES['Abstract Relational Comparison']('4', '3', true), false, 'LeftFirst: "3" is not less than "4"');
+	t.equal(ES['Abstract Relational Comparison']('3', '4', false), true, '!LeftFirst: "3" is less than "4"');
+	t.equal(ES['Abstract Relational Comparison']('4', '3', false), false, '!LeftFirst: "3" is not less than "4"');
+
+	t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, 42, true), true, 'LeftFirst: coercible object is less than 42');
+	t.equal(ES['Abstract Relational Comparison'](42, v.coercibleObject, true), false, 'LeftFirst: 42 is not less than coercible object');
+	t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, 42, false), true, '!LeftFirst: coercible object is less than 42');
+	t.equal(ES['Abstract Relational Comparison'](42, v.coercibleObject, false), false, '!LeftFirst: 42 is not less than coercible object');
+
+	t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, '3', true), false, 'LeftFirst: coercible object is not less than "3"');
+	t.equal(ES['Abstract Relational Comparison']('3', v.coercibleObject, true), false, 'LeftFirst: "3" is not less than coercible object');
+	t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, '3', false), false, '!LeftFirst: coercible object is not less than "3"');
+	t.equal(ES['Abstract Relational Comparison']('3', v.coercibleObject, false), false, '!LeftFirst: "3" is not less than coercible object');
+
+	t.end();
+});
+
+test('FromPropertyDescriptor', function (t) {
+	t.equal(ES.FromPropertyDescriptor(), undefined, 'no value begets undefined');
+	t.equal(ES.FromPropertyDescriptor(undefined), undefined, 'undefined value begets undefined');
+
+	forEach(v.nonUndefinedPrimitives, function (primitive) {
+		t['throws'](
+			function () { ES.FromPropertyDescriptor(primitive); },
+			TypeError,
+			debug(primitive) + ' is not a Property Descriptor'
+		);
+	});
+
+	var accessor = v.accessorDescriptor();
+	t.deepEqual(ES.FromPropertyDescriptor(accessor), {
+		get: accessor['[[Get]]'],
+		set: accessor['[[Set]]'],
+		enumerable: !!accessor['[[Enumerable]]'],
+		configurable: !!accessor['[[Configurable]]']
+	});
+
+	var mutator = v.mutatorDescriptor();
+	t.deepEqual(ES.FromPropertyDescriptor(mutator), {
+		get: mutator['[[Get]]'],
+		set: mutator['[[Set]]'],
+		enumerable: !!mutator['[[Enumerable]]'],
+		configurable: !!mutator['[[Configurable]]']
+	});
+	var data = v.dataDescriptor();
+	t.deepEqual(ES.FromPropertyDescriptor(data), {
+		value: data['[[Value]]'],
+		writable: data['[[Writable]]'],
+		enumerable: !!data['[[Enumerable]]'],
+		configurable: !!data['[[Configurable]]']
+	});
+
+	t['throws'](
+		function () { ES.FromPropertyDescriptor(v.genericDescriptor()); },
+		TypeError,
+		'a complete Property Descriptor is required'
+	);
+
+	t.end();
+});
+
+test('SecFromTime', function (t) {
+	var now = new Date();
+	t.equal(ES.SecFromTime(now.getTime()), now.getUTCSeconds(), 'second from Date timestamp matches getUTCSeconds');
+	t.end();
+});
+
+test('MinFromTime', function (t) {
+	var now = new Date();
+	t.equal(ES.MinFromTime(now.getTime()), now.getUTCMinutes(), 'minute from Date timestamp matches getUTCMinutes');
+	t.end();
+});
+
+test('HourFromTime', function (t) {
+	var now = new Date();
+	t.equal(ES.HourFromTime(now.getTime()), now.getUTCHours(), 'hour from Date timestamp matches getUTCHours');
+	t.end();
+});
+
+test('msFromTime', function (t) {
+	var now = new Date();
+	t.equal(ES.msFromTime(now.getTime()), now.getUTCMilliseconds(), 'ms from Date timestamp matches getUTCMilliseconds');
+	t.end();
+});
+
+var msPerSecond = 1e3;
+var msPerMinute = 60 * msPerSecond;
+var msPerHour = 60 * msPerMinute;
+var msPerDay = 24 * msPerHour;
+
+test('Day', function (t) {
+	var time = Date.UTC(2019, 8, 10, 2, 3, 4, 5);
+	var add = 2.5;
+	var later = new Date(time + (add * msPerDay));
+
+	t.equal(ES.Day(later.getTime()), ES.Day(time) + Math.floor(add), 'adding 2.5 days worth of ms, gives a Day delta of 2');
+	t.end();
+});
+
+test('TimeWithinDay', function (t) {
+	var time = Date.UTC(2019, 8, 10, 2, 3, 4, 5);
+	var add = 2.5;
+	var later = new Date(time + (add * msPerDay));
+
+	t.equal(ES.TimeWithinDay(later.getTime()), ES.TimeWithinDay(time) + (0.5 * msPerDay), 'adding 2.5 days worth of ms, gives a TimeWithinDay delta of +0.5');
+	t.end();
+});
+
+test('DayFromYear', function (t) {
+	t.equal(ES.DayFromYear(2021) - ES.DayFromYear(2020), 366, '2021 is a leap year, has 366 days');
+	t.equal(ES.DayFromYear(2020) - ES.DayFromYear(2019), 365, '2020 is not a leap year, has 365 days');
+	t.equal(ES.DayFromYear(2019) - ES.DayFromYear(2018), 365, '2019 is not a leap year, has 365 days');
+	t.equal(ES.DayFromYear(2018) - ES.DayFromYear(2017), 365, '2018 is not a leap year, has 365 days');
+	t.equal(ES.DayFromYear(2017) - ES.DayFromYear(2016), 366, '2017 is a leap year, has 366 days');
+
+	t.end();
+});
+
+test('TimeFromYear', function (t) {
+	for (var i = 1900; i < 2100; i += 1) {
+		t.equal(ES.TimeFromYear(i), Date.UTC(i, 0, 1), 'TimeFromYear matches a Date object’s year: ' + i);
+	}
+	t.end();
+});
+
+test('YearFromTime', function (t) {
+	for (var i = 1900; i < 2100; i += 1) {
+		t.equal(ES.YearFromTime(Date.UTC(i, 0, 1)), i, 'YearFromTime matches a Date object’s year on 1/1: ' + i);
+		t.equal(ES.YearFromTime(Date.UTC(i, 10, 1)), i, 'YearFromTime matches a Date object’s year on 10/1: ' + i);
+	}
+	t.end();
+});
+
+test('WeekDay', function (t) {
+	var now = new Date();
+	var today = now.getUTCDay();
+	for (var i = 0; i < 7; i += 1) {
+		var weekDay = ES.WeekDay(now.getTime() + (i * msPerDay));
+		t.equal(weekDay, (today + i) % 7, i + ' days after today (' + today + '), WeekDay is ' + weekDay);
+	}
+	t.end();
+});
+
+test('DaysInYear', function (t) {
+	t.equal(ES.DaysInYear(2021), 365, '2021 is not a leap year');
+	t.equal(ES.DaysInYear(2020), 366, '2020 is a leap year');
+	t.equal(ES.DaysInYear(2019), 365, '2019 is not a leap year');
+	t.equal(ES.DaysInYear(2018), 365, '2018 is not a leap year');
+	t.equal(ES.DaysInYear(2017), 365, '2017 is not a leap year');
+	t.equal(ES.DaysInYear(2016), 366, '2016 is a leap year');
+
+	t.end();
+});
+
+test('InLeapYear', function (t) {
+	t.equal(ES.InLeapYear(Date.UTC(2021, 0, 1)), 0, '2021 is not a leap year');
+	t.equal(ES.InLeapYear(Date.UTC(2020, 0, 1)), 1, '2020 is a leap year');
+	t.equal(ES.InLeapYear(Date.UTC(2019, 0, 1)), 0, '2019 is not a leap year');
+	t.equal(ES.InLeapYear(Date.UTC(2018, 0, 1)), 0, '2018 is not a leap year');
+	t.equal(ES.InLeapYear(Date.UTC(2017, 0, 1)), 0, '2017 is not a leap year');
+	t.equal(ES.InLeapYear(Date.UTC(2016, 0, 1)), 1, '2016 is a leap year');
+
+	t.end();
+});
+
+test('DayWithinYear', function (t) {
+	t.equal(ES.DayWithinYear(Date.UTC(2019, 0, 1)), 0, '1/1 is the 1st day');
+	t.equal(ES.DayWithinYear(Date.UTC(2019, 11, 31)), 364, '12/31 is the 365th day in a non leap year');
+	t.equal(ES.DayWithinYear(Date.UTC(2016, 11, 31)), 365, '12/31 is the 366th day in a leap year');
+
+	t.end();
+});
+
+test('MonthFromTime', function (t) {
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 0, 1)), 0, 'non-leap: 1/1 gives January');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 0, 31)), 0, 'non-leap: 1/31 gives January');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 1, 1)), 1, 'non-leap: 2/1 gives February');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 1, 28)), 1, 'non-leap: 2/28 gives February');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 1, 29)), 2, 'non-leap: 2/29 gives March');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 2, 1)), 2, 'non-leap: 3/1 gives March');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 2, 31)), 2, 'non-leap: 3/31 gives March');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 3, 1)), 3, 'non-leap: 4/1 gives April');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 3, 30)), 3, 'non-leap: 4/30 gives April');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 4, 1)), 4, 'non-leap: 5/1 gives May');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 4, 31)), 4, 'non-leap: 5/31 gives May');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 5, 1)), 5, 'non-leap: 6/1 gives June');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 5, 30)), 5, 'non-leap: 6/30 gives June');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 6, 1)), 6, 'non-leap: 7/1 gives July');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 6, 31)), 6, 'non-leap: 7/31 gives July');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 7, 1)), 7, 'non-leap: 8/1 gives August');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 7, 30)), 7, 'non-leap: 8/30 gives August');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 8, 1)), 8, 'non-leap: 9/1 gives September');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 8, 30)), 8, 'non-leap: 9/30 gives September');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 9, 1)), 9, 'non-leap: 10/1 gives October');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 9, 31)), 9, 'non-leap: 10/31 gives October');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 10, 1)), 10, 'non-leap: 11/1 gives November');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 10, 30)), 10, 'non-leap: 11/30 gives November');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 11, 1)), 11, 'non-leap: 12/1 gives December');
+	t.equal(ES.MonthFromTime(Date.UTC(2019, 11, 31)), 11, 'non-leap: 12/31 gives December');
+
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 0, 1)), 0, 'leap: 1/1 gives January');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 0, 31)), 0, 'leap: 1/31 gives January');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 1, 1)), 1, 'leap: 2/1 gives February');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 1, 28)), 1, 'leap: 2/28 gives February');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 1, 29)), 1, 'leap: 2/29 gives February');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 2, 1)), 2, 'leap: 3/1 gives March');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 2, 31)), 2, 'leap: 3/31 gives March');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 3, 1)), 3, 'leap: 4/1 gives April');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 3, 30)), 3, 'leap: 4/30 gives April');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 4, 1)), 4, 'leap: 5/1 gives May');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 4, 31)), 4, 'leap: 5/31 gives May');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 5, 1)), 5, 'leap: 6/1 gives June');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 5, 30)), 5, 'leap: 6/30 gives June');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 6, 1)), 6, 'leap: 7/1 gives July');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 6, 31)), 6, 'leap: 7/31 gives July');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 7, 1)), 7, 'leap: 8/1 gives August');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 7, 30)), 7, 'leap: 8/30 gives August');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 8, 1)), 8, 'leap: 9/1 gives September');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 8, 30)), 8, 'leap: 9/30 gives September');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 9, 1)), 9, 'leap: 10/1 gives October');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 9, 31)), 9, 'leap: 10/31 gives October');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 10, 1)), 10, 'leap: 11/1 gives November');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 10, 30)), 10, 'leap: 11/30 gives November');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 11, 1)), 11, 'leap: 12/1 gives December');
+	t.equal(ES.MonthFromTime(Date.UTC(2016, 11, 31)), 11, 'leap: 12/31 gives December');
+	t.end();
+});
+
+test('DateFromTime', function (t) {
+	var i;
+	for (i = 1; i <= 28; i += 1) {
+		t.equal(ES.DateFromTime(Date.UTC(2019, 1, i)), i, '2019.02.' + i + ' is date ' + i);
+	}
+	for (i = 1; i <= 29; i += 1) {
+		t.equal(ES.DateFromTime(Date.UTC(2016, 1, i)), i, '2016.02.' + i + ' is date ' + i);
+	}
+	for (i = 1; i <= 30; i += 1) {
+		t.equal(ES.DateFromTime(Date.UTC(2019, 8, i)), i, '2019.09.' + i + ' is date ' + i);
+	}
+	for (i = 1; i <= 31; i += 1) {
+		t.equal(ES.DateFromTime(Date.UTC(2019, 9, i)), i, '2019.10.' + i + ' is date ' + i);
+	}
+	t.end();
+});
+
+test('MakeDay', function (t) {
+	var day2015 = 16687;
+	t.equal(ES.MakeDay(2015, 8, 9), day2015, '2015.09.09 is day 16687');
+	var day2016 = day2015 + 366; // 2016 is a leap year
+	t.equal(ES.MakeDay(2016, 8, 9), day2016, '2015.09.09 is day 17053');
+	var day2017 = day2016 + 365;
+	t.equal(ES.MakeDay(2017, 8, 9), day2017, '2017.09.09 is day 17418');
+	var day2018 = day2017 + 365;
+	t.equal(ES.MakeDay(2018, 8, 9), day2018, '2018.09.09 is day 17783');
+	var day2019 = day2018 + 365;
+	t.equal(ES.MakeDay(2019, 8, 9), day2019, '2019.09.09 is day 18148');
+	t.end();
+});
+
+test('MakeDate', function (t) {
+	forEach(v.infinities.concat(NaN), function (nonFiniteNumber) {
+		t.ok(is(ES.MakeDate(nonFiniteNumber, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `day`');
+		t.ok(is(ES.MakeDate(0, nonFiniteNumber), NaN), debug(nonFiniteNumber) + ' is not a finite `time`');
+	});
+	t.equal(ES.MakeDate(0, 0), 0, 'zero day and zero time is zero date');
+	t.equal(ES.MakeDate(0, 123), 123, 'zero day and nonzero time is a date of the "time"');
+	t.equal(ES.MakeDate(1, 0), msPerDay, 'day of 1 and zero time is a date of "ms per day"');
+	t.equal(ES.MakeDate(3, 0), 3 * msPerDay, 'day of 3 and zero time is a date of thrice "ms per day"');
+	t.equal(ES.MakeDate(1, 123), msPerDay + 123, 'day of 1 and nonzero time is a date of "ms per day" plus the "time"');
+	t.equal(ES.MakeDate(3, 123), (3 * msPerDay) + 123, 'day of 3 and nonzero time is a date of thrice "ms per day" plus the "time"');
+
+	t.end();
+});
+
+test('MakeTime', function (t) {
+	forEach(v.infinities.concat(NaN), function (nonFiniteNumber) {
+		t.ok(is(ES.MakeTime(nonFiniteNumber, 0, 0, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `hour`');
+		t.ok(is(ES.MakeTime(0, nonFiniteNumber, 0, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `min`');
+		t.ok(is(ES.MakeTime(0, 0, nonFiniteNumber, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `sec`');
+		t.ok(is(ES.MakeTime(0, 0, 0, nonFiniteNumber), NaN), debug(nonFiniteNumber) + ' is not a finite `ms`');
+	});
+
+	t.equal(
+		ES.MakeTime(1.2, 2.3, 3.4, 4.5),
+		(1 * msPerHour) + (2 * msPerMinute) + (3 * msPerSecond) + 4,
+		'all numbers are converted to integer, multiplied by the right number of ms, and summed'
+	);
+	t.end();
+});
+
+test('TimeClip', function (t) {
+	forEach(v.infinities.concat(NaN), function (nonFiniteNumber) {
+		t.ok(is(ES.TimeClip(nonFiniteNumber), NaN), debug(nonFiniteNumber) + ' is not a finite `time`');
+	});
+	t.ok(is(ES.TimeClip(8.64e15 + 1), NaN), '8.64e15 is the largest magnitude considered "finite"');
+	t.ok(is(ES.TimeClip(-8.64e15 - 1), NaN), '-8.64e15 is the largest magnitude considered "finite"');
+
+	forEach(v.zeroes.concat([-10, 10, +new Date()]), function (time) {
+		t.looseEqual(ES.TimeClip(time), time, debug(time) + ' is a time of ' + debug(time));
+	});
+
+	t.end();
+});
+
+test('modulo', function (t) {
+	t.equal(3 % 2, 1, '+3 % 2 is +1');
+	t.equal(ES.modulo(3, 2), 1, '+3 mod 2 is +1');
+
+	t.equal(-3 % 2, -1, '-3 % 2 is -1');
+	t.equal(ES.modulo(-3, 2), 1, '-3 mod 2 is +1');
+	t.end();
+});
diff --git a/src/node_modules/es-abstract/test/es6.js b/src/node_modules/es-abstract/test/es6.js
new file mode 100644
index 0000000..e7c9d98
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es6.js
@@ -0,0 +1,18 @@
+'use strict';
+
+var test = require('tape');
+
+var ES = require('../');
+var ES6 = ES.ES6;
+var ES2015 = ES.ES2015;
+var ES6entry = require('../es6');
+
+test('legacy es6 export', function (t) {
+	t.equal(ES6, ES2015, 'main ES6 === main ES2015');
+	t.end();
+});
+
+test('legacy es6 entry point', function (t) {
+	t.equal(ES6, ES6entry, 'main ES6 === ES6 entry point');
+	t.end();
+});
diff --git a/src/node_modules/es-abstract/test/es7.js b/src/node_modules/es-abstract/test/es7.js
new file mode 100644
index 0000000..ee57e15
--- /dev/null
+++ b/src/node_modules/es-abstract/test/es7.js
@@ -0,0 +1,18 @@
+'use strict';
+
+var test = require('tape');
+
+var ES = require('../');
+var ES7 = ES.ES7;
+var ES2016 = ES.ES2016;
+var ES7entry = require('../es7');
+
+test('legacy es7 export', function (t) {
+	t.equal(ES7, ES2016, 'main ES7 === main ES2016');
+	t.end();
+});
+
+test('legacy es7 entry point', function (t) {
+	t.equal(ES7, ES7entry, 'main ES7 === ES7 entry point');
+	t.end();
+});
diff --git a/src/node_modules/es-abstract/test/helpers/OwnPropertyKeys.js b/src/node_modules/es-abstract/test/helpers/OwnPropertyKeys.js
new file mode 100644
index 0000000..9c2b4fc
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/OwnPropertyKeys.js
@@ -0,0 +1,42 @@
+'use strict';
+
+var test = require('tape');
+var hasSymbols = require('has-symbols')();
+
+var OwnPropertyKeys = require('../../helpers/OwnPropertyKeys');
+var defineProperty = require('./defineProperty');
+
+test('OwnPropertyKeys', function (t) {
+	t.deepEqual(OwnPropertyKeys({ a: 1, b: 2 }).sort(), ['a', 'b'].sort(), 'returns own string keys');
+
+	t.test('Symbols', { skip: !hasSymbols }, function (st) {
+		var o = { a: 1 };
+		var sym = Symbol();
+		o[sym] = 2;
+
+		st.deepEqual(OwnPropertyKeys(o), ['a', sym], 'returns own string and symbol keys');
+
+		st.end();
+	});
+
+	t.test('non-enumerables', { skip: !defineProperty.oDP }, function (st) {
+		var o = { a: 1, b: 42, c: NaN };
+		defineProperty(o, 'b', { enumerable: false, value: 42 });
+		defineProperty(o, 'c', { enumerable: false, get: function () { return NaN; } });
+
+		if (hasSymbols) {
+			defineProperty(o, 'd', { enumerable: false, value: true });
+			defineProperty(o, 'e', { enumerable: false, get: function () { return true; } });
+		}
+
+		st.deepEqual(
+			OwnPropertyKeys(o).sort(),
+			(hasSymbols ? ['a', 'b', 'c', 'd', 'e'] : ['a', 'b', 'c']).sort(),
+			'returns non-enumerable own keys, including accessors and symbols if available'
+		);
+
+		st.end();
+	});
+
+	t.end();
+});
diff --git a/src/node_modules/es-abstract/test/helpers/assertRecord.js b/src/node_modules/es-abstract/test/helpers/assertRecord.js
new file mode 100644
index 0000000..d6a80c2
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/assertRecord.js
@@ -0,0 +1,60 @@
+'use strict';
+
+var forEach = require('foreach');
+var debug = require('object-inspect');
+
+var assertRecord = require('../../helpers/assertRecord');
+var v = require('./values');
+
+module.exports = function assertRecordTests(ES, test) {
+	test('Property Descriptor', function (t) {
+		var record = 'Property Descriptor';
+
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { assertRecord(ES.Type, record, 'arg', primitive); },
+				TypeError,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		t['throws'](
+			function () { assertRecord(ES.Type, record, 'arg', { invalid: true }); },
+			TypeError,
+			'invalid keys not allowed on a Property Descriptor'
+		);
+
+		t.doesNotThrow(
+			function () { assertRecord(ES.Type, record, 'arg', {}); },
+			'empty object is an incomplete Property Descriptor'
+		);
+
+		t.doesNotThrow(
+			function () { assertRecord(ES.Type, record, 'arg', v.accessorDescriptor()); },
+			'accessor descriptor is a Property Descriptor'
+		);
+
+		t.doesNotThrow(
+			function () { assertRecord(ES.Type, record, 'arg', v.mutatorDescriptor()); },
+			'mutator descriptor is a Property Descriptor'
+		);
+
+		t.doesNotThrow(
+			function () { assertRecord(ES.Type, record, 'arg', v.dataDescriptor()); },
+			'data descriptor is a Property Descriptor'
+		);
+
+		t.doesNotThrow(
+			function () { assertRecord(ES.Type, record, 'arg', v.genericDescriptor()); },
+			'generic descriptor is a Property Descriptor'
+		);
+
+		t['throws'](
+			function () { assertRecord(ES.Type, record, 'arg', v.bothDescriptor()); },
+			TypeError,
+			'a Property Descriptor can not be both a Data and an Accessor Descriptor'
+		);
+
+		t.end();
+	});
+};
diff --git a/src/node_modules/es-abstract/test/helpers/createBoundESNamespace.js b/src/node_modules/es-abstract/test/helpers/createBoundESNamespace.js
new file mode 100644
index 0000000..880ba3d
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/createBoundESNamespace.js
@@ -0,0 +1,21 @@
+'use strict';
+
+var bind = require('function-bind');
+
+var OwnPropertyKeys = require('../../helpers/OwnPropertyKeys');
+
+module.exports = function createBoundESNamespace(ES) {
+	var keys = OwnPropertyKeys(ES);
+	var result = {};
+
+	for (var i = 0; i < keys.length; i++) {
+		var key = keys[i];
+		var prop = ES[key];
+		if (typeof prop === 'function') {
+			prop = bind.call(prop, undefined);
+		}
+		result[key] = prop;
+	}
+
+	return result;
+};
diff --git a/src/node_modules/es-abstract/test/helpers/defineProperty.js b/src/node_modules/es-abstract/test/helpers/defineProperty.js
new file mode 100644
index 0000000..03102a8
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/defineProperty.js
@@ -0,0 +1,27 @@
+'use strict';
+
+var GetIntrinsic = require('../../GetIntrinsic');
+
+var $defineProperty = GetIntrinsic('%Object.defineProperty%', true);
+
+if ($defineProperty) {
+	try {
+		$defineProperty({}, 'a', { value: 1 });
+	} catch (e) {
+		// IE 8 has a broken defineProperty
+		$defineProperty = null;
+	}
+}
+
+module.exports = function defineProperty(O, P, Desc) {
+	if ($defineProperty) {
+		return $defineProperty(O, P, Desc);
+	}
+	if ((Desc.enumerable && Desc.configurable && Desc.writable) || !(P in O)) {
+		O[P] = Desc.value; // eslint-disable-line no-param-reassign
+		return O;
+	}
+
+	throw new SyntaxError('helper does not yet support this configuration');
+};
+module.exports.oDP = $defineProperty;
diff --git a/src/node_modules/es-abstract/test/helpers/getSymbolDescription.js b/src/node_modules/es-abstract/test/helpers/getSymbolDescription.js
new file mode 100644
index 0000000..fbe7a7b
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/getSymbolDescription.js
@@ -0,0 +1,67 @@
+'use strict';
+
+var test = require('tape');
+var debug = require('object-inspect');
+var forEach = require('foreach');
+var has = require('has');
+
+var v = require('./values');
+var getSymbolDescription = require('../../helpers/getSymbolDescription');
+var getInferredName = require('../../helpers/getInferredName');
+
+test('getSymbolDescription', function (t) {
+	t.test('no symbols', { skip: v.hasSymbols }, function (st) {
+		st['throws'](
+			getSymbolDescription,
+			SyntaxError,
+			'requires Symbol support'
+		);
+
+		st.end();
+	});
+
+	forEach(v.nonSymbolPrimitives.concat(v.objects), function (nonSymbol) {
+		t['throws'](
+			function () { getSymbolDescription(nonSymbol); },
+			v.hasSymbols ? TypeError : SyntaxError,
+			debug(nonSymbol) + ' is not a Symbol'
+		);
+	});
+
+	t.test('with symbols', { skip: !v.hasSymbols }, function (st) {
+		forEach(
+			[
+				[Symbol(), undefined],
+				[Symbol(undefined), undefined],
+				[Symbol(null), 'null'],
+				[Symbol.iterator, 'Symbol.iterator'],
+				[Symbol('foo'), 'foo']
+			],
+			function (pair) {
+				var sym = pair[0];
+				var desc = pair[1];
+				st.equal(getSymbolDescription(sym), desc, debug(sym) + ' description is ' + debug(desc));
+			}
+		);
+
+		st.test('only possible when inference or native `Symbol.prototype.description` is supported', {
+			skip: !getInferredName && !has(Symbol.prototype, 'description')
+		}, function (s2t) {
+			s2t.equal(getSymbolDescription(Symbol('')), '', 'Symbol("") description is ""');
+
+			s2t.end();
+		});
+
+		st.test('only possible when global symbols are supported', {
+			skip: !has(Symbol, 'for') || !has(Symbol, 'keyFor')
+		}, function (s2t) {
+			// eslint-disable-next-line no-restricted-properties
+			s2t.equal(getSymbolDescription(Symbol['for']('')), '', 'Symbol.for("") description is ""');
+			s2t.end();
+		});
+
+		st.end();
+	});
+
+	t.end();
+});
diff --git a/src/node_modules/es-abstract/test/helpers/runManifestTest.js b/src/node_modules/es-abstract/test/helpers/runManifestTest.js
new file mode 100644
index 0000000..2fdb4f2
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/runManifestTest.js
@@ -0,0 +1,27 @@
+'use strict';
+
+var path = require('path');
+var fs = require('fs');
+
+var forEach = require('foreach');
+var keys = require('object-keys');
+
+module.exports = function runManifestTest(test, ES, edition) {
+	test('ES' + edition + ' manifest', { skip: !fs.readdirSync }, function (t) {
+		var files = fs.readdirSync(path.join(__dirname, '../../' + edition), 'utf-8');
+		var map = {
+			AbstractEqualityComparison: 'Abstract Equality Comparison',
+			AbstractRelationalComparison: 'Abstract Relational Comparison',
+			StrictEqualityComparison: 'Strict Equality Comparison'
+		};
+		forEach(files, function (file) {
+			var name = path.basename(file, path.extname(file));
+			var actual = ES[map[name] || name];
+			var expected = require(path.join(__dirname, '../../' + edition + '/', file)); // eslint-disable-line global-require
+			t.equal(actual, expected, 'ES["' + name + '"] === ' + file);
+		});
+		var actualCount = keys(ES).length;
+		t.equal(actualCount, files.length, 'expected ' + files.length + ' files, got ' + actualCount);
+		t.end();
+	});
+};
diff --git a/src/node_modules/es-abstract/test/helpers/values.js b/src/node_modules/es-abstract/test/helpers/values.js
new file mode 100644
index 0000000..f955873
--- /dev/null
+++ b/src/node_modules/es-abstract/test/helpers/values.js
@@ -0,0 +1,127 @@
+'use strict';
+
+var assign = require('../../helpers/assign');
+
+var hasSymbols = require('has-symbols')();
+var hasBigInts = require('has-bigints')();
+
+var coercibleObject = { valueOf: function () { return 3; }, toString: function () { return 42; } };
+var coercibleFnObject = {
+	valueOf: function () { return function valueOfFn() {}; },
+	toString: function () { return 42; }
+};
+var valueOfOnlyObject = { valueOf: function () { return 4; }, toString: function () { return {}; } };
+var toStringOnlyObject = { valueOf: function () { return {}; }, toString: function () { return 7; } };
+var uncoercibleObject = { valueOf: function () { return {}; }, toString: function () { return {}; } };
+var uncoercibleFnObject = {
+	valueOf: function () { return function valueOfFn() {}; },
+	toString: function () { return function toStrFn() {}; }
+};
+var objects = [{}, coercibleObject, coercibleFnObject, toStringOnlyObject, valueOfOnlyObject];
+var nullPrimitives = [undefined, null];
+var nonIntegerNumbers = [-1.3, 0.2, 1.8, 1 / 3];
+var integerNumbers = [1, 7, 42, 1e17];
+var zeroes = [0, -0];
+var infinities = [Infinity, -Infinity];
+var numbers = zeroes.concat([42], infinities, nonIntegerNumbers);
+var strings = ['', 'foo', 'a\uD83D\uDCA9c'];
+var booleans = [true, false];
+var symbols = hasSymbols ? [Symbol.iterator, Symbol('foo')] : [];
+var bigints = hasBigInts ? [BigInt(42), BigInt(0)] : [];
+var nonSymbolPrimitives = [].concat(nullPrimitives, booleans, strings, numbers, bigints);
+var nonNumberPrimitives = [].concat(nullPrimitives, booleans, strings, symbols);
+var nonNullPrimitives = [].concat(booleans, strings, numbers, symbols, bigints);
+var nonUndefinedPrimitives = [].concat(null, nonNullPrimitives);
+var nonStrings = [].concat(nullPrimitives, booleans, numbers, symbols, objects, bigints);
+var primitives = [].concat(nullPrimitives, nonNullPrimitives);
+var nonPropertyKeys = [].concat(nullPrimitives, booleans, numbers, objects);
+var propertyKeys = [].concat(strings, symbols);
+var nonBooleans = [].concat(nullPrimitives, strings, symbols, numbers, objects);
+var falsies = [].concat(nullPrimitives, false, '', 0, -0, NaN);
+var truthies = [].concat(true, 'foo', 42, symbols, objects);
+var timestamps = [].concat(0, 946713600000, 1546329600000);
+var nonFunctions = [].concat(primitives, objects, [42]);
+var nonArrays = [].concat(nonFunctions);
+var nonBigInts = [].concat(nonNumberPrimitives, numbers);
+
+var descriptors = {
+	configurable: function (descriptor) {
+		return assign(assign({}, descriptor), { '[[Configurable]]': true });
+	},
+	nonConfigurable: function (descriptor) {
+		return assign(assign({}, descriptor), { '[[Configurable]]': false });
+	},
+	enumerable: function (descriptor) {
+		return assign(assign({}, descriptor), { '[[Enumerable]]': true });
+	},
+	nonEnumerable: function (descriptor) {
+		return assign(assign({}, descriptor), { '[[Enumerable]]': false });
+	},
+	writable: function (descriptor) {
+		return assign(assign({}, descriptor), { '[[Writable]]': true });
+	},
+	nonWritable: function (descriptor) {
+		return assign(assign({}, descriptor), { '[[Writable]]': false });
+	}
+};
+
+module.exports = {
+	booleans: booleans,
+	coercibleFnObject: coercibleFnObject,
+	coercibleObject: coercibleObject,
+	falsies: falsies,
+	hasSymbols: hasSymbols,
+	infinities: infinities,
+	integerNumbers: integerNumbers,
+	nonArrays: nonArrays,
+	nonBigInts: nonBigInts,
+	nonBooleans: nonBooleans,
+	nonFunctions: nonFunctions,
+	nonIntegerNumbers: nonIntegerNumbers,
+	nonNullPrimitives: nonNullPrimitives,
+	nonNumberPrimitives: nonNumberPrimitives,
+	nonNumbers: nonNumberPrimitives.concat(objects),
+	nonPropertyKeys: nonPropertyKeys,
+	nonStrings: nonStrings,
+	nonSymbolPrimitives: nonSymbolPrimitives,
+	nonUndefinedPrimitives: nonUndefinedPrimitives,
+	nullPrimitives: nullPrimitives,
+	numbers: numbers,
+	objects: objects,
+	primitives: primitives,
+	propertyKeys: propertyKeys,
+	strings: strings,
+	symbols: symbols,
+	timestamps: timestamps,
+	toStringOnlyObject: toStringOnlyObject,
+	truthies: truthies,
+	uncoercibleFnObject: uncoercibleFnObject,
+	uncoercibleObject: uncoercibleObject,
+	valueOfOnlyObject: valueOfOnlyObject,
+	zeroes: zeroes,
+	bothDescriptor: function () {
+		return { '[[Get]]': function () {}, '[[Value]]': true };
+	},
+	bothDescriptorWritable: function () {
+		return descriptors.writable({ '[[Get]]': function () {} });
+	},
+	accessorDescriptor: function (value) {
+		return descriptors.enumerable(descriptors.configurable({
+			'[[Get]]': function get() { return value; }
+		}));
+	},
+	mutatorDescriptor: function () {
+		return descriptors.enumerable(descriptors.configurable({
+			'[[Set]]': function () {}
+		}));
+	},
+	dataDescriptor: function (value) {
+		return descriptors.nonWritable({
+			'[[Value]]': arguments.length > 0 ? value : 42
+		});
+	},
+	genericDescriptor: function () {
+		return descriptors.configurable(descriptors.nonEnumerable());
+	},
+	descriptors: descriptors
+};
diff --git a/src/node_modules/es-abstract/test/index.js b/src/node_modules/es-abstract/test/index.js
new file mode 100644
index 0000000..85a73f0
--- /dev/null
+++ b/src/node_modules/es-abstract/test/index.js
@@ -0,0 +1,36 @@
+'use strict';
+
+var ES = require('../');
+var test = require('tape');
+var keys = require('object-keys');
+var forEach = require('foreach');
+
+var ESkeys = keys(ES).sort();
+var ES6keys = keys(ES.ES6).sort();
+
+test('exposed properties', function (t) {
+	t.deepEqual(ESkeys, ES6keys.concat(['ES2020', 'ES2019', 'ES2018', 'ES2017', 'ES7', 'ES2016', 'ES6', 'ES2015', 'ES5']).sort(), 'main ES object keys match ES6 keys');
+	t.end();
+});
+
+test('methods match', function (t) {
+	forEach(ES6keys, function (key) {
+		t.equal(ES.ES6[key], ES[key], 'method ' + key + ' on main ES object is ES6 method');
+	});
+	t.end();
+});
+
+require('./GetIntrinsic');
+
+require('./helpers/getSymbolDescription');
+require('./helpers/OwnPropertyKeys');
+
+require('./es5');
+require('./es6');
+require('./es2015');
+require('./es7');
+require('./es2016');
+require('./es2017');
+require('./es2018');
+require('./es2019');
+require('./es2020');
diff --git a/src/node_modules/es-abstract/test/ses-compat.js b/src/node_modules/es-abstract/test/ses-compat.js
new file mode 100644
index 0000000..c3e60f4
--- /dev/null
+++ b/src/node_modules/es-abstract/test/ses-compat.js
@@ -0,0 +1,8 @@
+'use strict';
+
+/* globals lockdown */
+require('ses');
+
+lockdown({ errorTaming: 'unsafe' });
+
+require('.');
diff --git a/src/node_modules/es-abstract/test/tests.js b/src/node_modules/es-abstract/test/tests.js
new file mode 100644
index 0000000..e2aec23
--- /dev/null
+++ b/src/node_modules/es-abstract/test/tests.js
@@ -0,0 +1,4933 @@
+'use strict';
+
+var test = require('tape');
+
+var forEach = require('foreach');
+var is = require('object-is');
+var debug = require('object-inspect');
+var assign = require('object.assign');
+var keys = require('object-keys');
+var has = require('has');
+var arrowFns = require('make-arrow-function').list();
+var hasStrictMode = require('has-strict-mode')();
+var functionsHaveNames = require('functions-have-names')();
+var functionsHaveConfigurableNames = require('functions-have-names').functionsHaveConfigurableNames();
+var hasBigInts = require('has-bigints')();
+
+var $getProto = require('../helpers/getProto');
+var $setProto = require('../helpers/setProto');
+var defineProperty = require('./helpers/defineProperty');
+var getInferredName = require('../helpers/getInferredName');
+var getOwnPropertyDescriptor = require('../helpers/getOwnPropertyDescriptor');
+var assertRecordTests = require('./helpers/assertRecord');
+var v = require('./helpers/values');
+var diffOps = require('./diffOps');
+
+var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || Math.pow(2, 53) - 1;
+
+var canDistinguishSparseFromUndefined = 0 in [undefined]; // IE 6 - 8 have a bug where this returns false
+
+// IE 9 does not throw in strict mode when writability/configurability/extensibility is violated
+var noThrowOnStrictViolation = (function () {
+	try {
+		delete [].length;
+		return true;
+	} catch (e) {
+	}
+	return false;
+}());
+
+var leadingPoo = '\uD83D';
+var trailingPoo = '\uDCA9';
+var wholePoo = leadingPoo + trailingPoo;
+
+var getArraySubclassWithSpeciesConstructor = function getArraySubclass(speciesConstructor) {
+	var Bar = function Bar() {
+		var inst = [];
+		Object.setPrototypeOf(inst, Bar.prototype);
+		defineProperty(inst, 'constructor', { value: Bar });
+		return inst;
+	};
+	Bar.prototype = Object.create(Array.prototype);
+	Object.setPrototypeOf(Bar, Array);
+	defineProperty(Bar, Symbol.species, { value: speciesConstructor });
+
+	return Bar;
+};
+
+var testIterator = function (t, iterator, expected) {
+	var resultCount = 0;
+	var result;
+	while (result = iterator.next(), !result.done) { // eslint-disable-line no-sequences
+		t.deepEqual(result, { done: false, value: expected[resultCount] }, 'result ' + resultCount);
+		resultCount += 1;
+	}
+	t.equal(resultCount, expected.length, 'expected ' + expected.length + ', got ' + resultCount);
+};
+
+var hasSpecies = v.hasSymbols && Symbol.species;
+
+var hasLastIndex = 'lastIndex' in (/a/).exec('a'); // IE 8
+var hasGroups = 'groups' in (/a/).exec('a'); // modern engines
+var kludgeMatch = function kludgeMatch(R, matchObject) {
+	if (hasGroups) {
+		assign(matchObject, { groups: matchObject.groups });
+	}
+	if (hasLastIndex) {
+		assign(matchObject, { lastIndex: R.lastIndex });
+	}
+	return matchObject;
+};
+
+var testEnumerableOwnNames = function (t, enumerableOwnNames) {
+	forEach(v.primitives, function (nonObject) {
+		t['throws'](
+			function () { enumerableOwnNames(nonObject); },
+			debug(nonObject) + ' is not an Object'
+		);
+	});
+
+	var Child = function Child() {
+		this.own = {};
+	};
+	Child.prototype = {
+		inherited: {}
+	};
+
+	var obj = new Child();
+
+	t.equal('own' in obj, true, 'has "own"');
+	t.equal(has(obj, 'own'), true, 'has own "own"');
+	t.equal(Object.prototype.propertyIsEnumerable.call(obj, 'own'), true, 'has enumerable "own"');
+
+	t.equal('inherited' in obj, true, 'has "inherited"');
+	t.equal(has(obj, 'inherited'), false, 'has non-own "inherited"');
+	t.equal(has(Child.prototype, 'inherited'), true, 'Child.prototype has own "inherited"');
+	t.equal(Child.prototype.inherited, obj.inherited, 'Child.prototype.inherited === obj.inherited');
+	t.equal(Object.prototype.propertyIsEnumerable.call(Child.prototype, 'inherited'), true, 'has enumerable "inherited"');
+
+	t.equal('toString' in obj, true, 'has "toString"');
+	t.equal(has(obj, 'toString'), false, 'has non-own "toString"');
+	t.equal(has(Object.prototype, 'toString'), true, 'Object.prototype has own "toString"');
+	t.equal(Object.prototype.toString, obj.toString, 'Object.prototype.toString === obj.toString');
+	// eslint-disable-next-line no-useless-call
+	t.equal(Object.prototype.propertyIsEnumerable.call(Object.prototype, 'toString'), false, 'has non-enumerable "toString"');
+
+	return obj;
+};
+
+var testToNumber = function (t, ES, ToNumber) {
+	t.ok(is(NaN, ToNumber(undefined)), 'undefined coerces to NaN');
+	t.ok(is(ToNumber(null), 0), 'null coerces to +0');
+	t.ok(is(ToNumber(false), 0), 'false coerces to +0');
+	t.equal(1, ToNumber(true), 'true coerces to 1');
+
+	t.test('numbers', function (st) {
+		st.ok(is(NaN, ToNumber(NaN)), 'NaN returns itself');
+		forEach(v.zeroes.concat(v.infinities, 42), function (num) {
+			st.equal(num, ToNumber(num), num + ' returns itself');
+		});
+		forEach(['foo', '0', '4a', '2.0', 'Infinity', '-Infinity'], function (numString) {
+			st.ok(is(+numString, ToNumber(numString)), '"' + numString + '" coerces to ' + Number(numString));
+		});
+		st.end();
+	});
+
+	t.test('objects', function (st) {
+		forEach(v.objects, function (object) {
+			st.ok(is(ToNumber(object), ToNumber(ES.ToPrimitive(object))), 'object ' + object + ' coerces to same as ToPrimitive of object does');
+		});
+		st['throws'](function () { return ToNumber(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		st.end();
+	});
+
+	t.test('binary literals', function (st) {
+		st.equal(ToNumber('0b10'), 2, '0b10 is 2');
+		st.equal(ToNumber({ toString: function () { return '0b11'; } }), 3, 'Object that toStrings to 0b11 is 3');
+
+		st.equal(true, is(ToNumber('0b12'), NaN), '0b12 is NaN');
+		st.equal(true, is(ToNumber({ toString: function () { return '0b112'; } }), NaN), 'Object that toStrings to 0b112 is NaN');
+		st.end();
+	});
+
+	t.test('octal literals', function (st) {
+		st.equal(ToNumber('0o10'), 8, '0o10 is 8');
+		st.equal(ToNumber({ toString: function () { return '0o11'; } }), 9, 'Object that toStrings to 0o11 is 9');
+
+		st.equal(true, is(ToNumber('0o18'), NaN), '0o18 is NaN');
+		st.equal(true, is(ToNumber({ toString: function () { return '0o118'; } }), NaN), 'Object that toStrings to 0o118 is NaN');
+		st.end();
+	});
+
+	t.test('signed hex numbers', function (st) {
+		st.equal(true, is(ToNumber('-0xF'), NaN), '-0xF is NaN');
+		st.equal(true, is(ToNumber(' -0xF '), NaN), 'space-padded -0xF is NaN');
+		st.equal(true, is(ToNumber('+0xF'), NaN), '+0xF is NaN');
+		st.equal(true, is(ToNumber(' +0xF '), NaN), 'space-padded +0xF is NaN');
+
+		st.end();
+	});
+
+	t.test('trimming of whitespace and non-whitespace characters', function (st) {
+		var whitespace = ' \t\x0b\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000';
+		st.equal(0, ToNumber(whitespace + 0 + whitespace), 'whitespace is trimmed');
+
+		// Zero-width space (zws), next line character (nel), and non-character (bom) are not whitespace.
+		var nonWhitespaces = {
+			'\\u0085': '\u0085',
+			'\\u200b': '\u200b',
+			'\\ufffe': '\ufffe'
+		};
+
+		forEach(nonWhitespaces, function (desc, nonWS) {
+			st.equal(true, is(ToNumber(nonWS + 0 + nonWS), NaN), 'non-whitespace ' + desc + ' not trimmed');
+		});
+
+		st.end();
+	});
+
+	forEach(v.symbols, function (symbol) {
+		t['throws'](
+			function () { ToNumber(symbol); },
+			TypeError,
+			'Symbols can’t be converted to a Number: ' + debug(symbol)
+		);
+	});
+
+	t.test('dates', function (st) {
+		var invalid = new Date(NaN);
+		st.ok(is(ToNumber(invalid), NaN), 'invalid Date coerces to NaN');
+		var now = +new Date();
+		st.equal(ToNumber(new Date(now)), now, 'Date coerces to timestamp');
+		st.end();
+	});
+};
+
+var es2015 = function ES2015(ES, ops, expectedMissing, skips) {
+	test('has expected operations', function (t) {
+		var diff = diffOps(ES, ops, expectedMissing);
+
+		t.deepEqual(diff.extra, [], 'no extra ops');
+
+		t.deepEqual(diff.missing, [], 'no unexpected missing ops');
+
+		t.end();
+	});
+
+	test('ToPrimitive', function (t) {
+		t.test('primitives', function (st) {
+			var testPrimitive = function (primitive) {
+				st.ok(is(ES.ToPrimitive(primitive), primitive), debug(primitive) + ' is returned correctly');
+			};
+			forEach(v.primitives, testPrimitive);
+			st.end();
+		});
+
+		t.test('objects', function (st) {
+			st.equal(ES.ToPrimitive(v.coercibleObject), 3, 'coercibleObject with no hint coerces to valueOf');
+			st.ok(is(ES.ToPrimitive({}), '[object Object]'), '{} with no hint coerces to Object#toString');
+			st.equal(ES.ToPrimitive(v.coercibleObject, Number), 3, 'coercibleObject with hint Number coerces to valueOf');
+			st.ok(is(ES.ToPrimitive({}, Number), '[object Object]'), '{} with hint Number coerces to NaN');
+			st.equal(ES.ToPrimitive(v.coercibleObject, String), 42, 'coercibleObject with hint String coerces to nonstringified toString');
+			st.equal(ES.ToPrimitive({}, String), '[object Object]', '{} with hint String coerces to Object#toString');
+			st.equal(ES.ToPrimitive(v.toStringOnlyObject), 7, 'toStringOnlyObject returns non-stringified toString');
+			st.equal(ES.ToPrimitive(v.valueOfOnlyObject), 4, 'valueOfOnlyObject returns valueOf');
+			st['throws'](function () { return ES.ToPrimitive(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws a TypeError');
+			st.end();
+		});
+
+		t.test('dates', function (st) {
+			var invalid = new Date(NaN);
+			st.equal(ES.ToPrimitive(invalid), Date.prototype.toString.call(invalid), 'invalid Date coerces to Date#toString');
+			var now = new Date();
+			st.equal(ES.ToPrimitive(now), Date.prototype.toString.call(now), 'Date coerces to Date#toString');
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('ToBoolean', function (t) {
+		t.equal(false, ES.ToBoolean(undefined), 'undefined coerces to false');
+		t.equal(false, ES.ToBoolean(null), 'null coerces to false');
+		t.equal(false, ES.ToBoolean(false), 'false returns false');
+		t.equal(true, ES.ToBoolean(true), 'true returns true');
+
+		t.test('numbers', function (st) {
+			forEach(v.zeroes.concat(NaN), function (falsyNumber) {
+				st.equal(false, ES.ToBoolean(falsyNumber), 'falsy number ' + falsyNumber + ' coerces to false');
+			});
+			forEach(v.infinities.concat([42, 1]), function (truthyNumber) {
+				st.equal(true, ES.ToBoolean(truthyNumber), 'truthy number ' + truthyNumber + ' coerces to true');
+			});
+
+			st.end();
+		});
+
+		t.equal(false, ES.ToBoolean(''), 'empty string coerces to false');
+		t.equal(true, ES.ToBoolean('foo'), 'nonempty string coerces to true');
+
+		t.test('objects', function (st) {
+			forEach(v.objects, function (obj) {
+				st.equal(true, ES.ToBoolean(obj), 'object coerces to true');
+			});
+			st.equal(true, ES.ToBoolean(v.uncoercibleObject), 'uncoercibleObject coerces to true');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('ToNumber', function (t) {
+		testToNumber(t, ES, ES.ToNumber);
+
+		t.end();
+	});
+
+	test('ToInteger', { skip: skips && skips.ToInteger }, function (t) {
+		forEach([NaN], function (num) {
+			t.ok(is(0, ES.ToInteger(num)), debug(num) + ' returns +0');
+		});
+		forEach([0, -0, Infinity, 42], function (num) {
+			t.ok(is(num, ES.ToInteger(num)), debug(num) + ' returns itself');
+			t.ok(is(-num, ES.ToInteger(-num)), '-' + debug(num) + ' returns itself');
+		});
+		t.equal(3, ES.ToInteger(Math.PI), 'pi returns 3');
+		t['throws'](function () { return ES.ToInteger(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.end();
+	});
+
+	test('ToInt32', function (t) {
+		t.ok(is(0, ES.ToInt32(NaN)), 'NaN coerces to +0');
+		forEach([0, Infinity], function (num) {
+			t.ok(is(0, ES.ToInt32(num)), num + ' returns +0');
+			t.ok(is(0, ES.ToInt32(-num)), '-' + num + ' returns +0');
+		});
+		t['throws'](function () { return ES.ToInt32(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.ok(is(ES.ToInt32(0x100000000), 0), '2^32 returns +0');
+		t.ok(is(ES.ToInt32(0x100000000 - 1), -1), '2^32 - 1 returns -1');
+		t.ok(is(ES.ToInt32(0x80000000), -0x80000000), '2^31 returns -2^31');
+		t.ok(is(ES.ToInt32(0x80000000 - 1), 0x80000000 - 1), '2^31 - 1 returns 2^31 - 1');
+		forEach([0, Infinity, NaN, 0x100000000, 0x80000000, 0x10000, 0x42], function (num) {
+			t.ok(is(ES.ToInt32(num), ES.ToInt32(ES.ToUint32(num))), 'ToInt32(x) === ToInt32(ToUint32(x)) for 0x' + num.toString(16));
+			t.ok(is(ES.ToInt32(-num), ES.ToInt32(ES.ToUint32(-num))), 'ToInt32(x) === ToInt32(ToUint32(x)) for -0x' + num.toString(16));
+		});
+		t.end();
+	});
+
+	test('ToUint32', function (t) {
+		t.ok(is(0, ES.ToUint32(NaN)), 'NaN coerces to +0');
+		forEach([0, Infinity], function (num) {
+			t.ok(is(0, ES.ToUint32(num)), num + ' returns +0');
+			t.ok(is(0, ES.ToUint32(-num)), '-' + num + ' returns +0');
+		});
+		t['throws'](function () { return ES.ToUint32(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.ok(is(ES.ToUint32(0x100000000), 0), '2^32 returns +0');
+		t.ok(is(ES.ToUint32(0x100000000 - 1), 0x100000000 - 1), '2^32 - 1 returns 2^32 - 1');
+		t.ok(is(ES.ToUint32(0x80000000), 0x80000000), '2^31 returns 2^31');
+		t.ok(is(ES.ToUint32(0x80000000 - 1), 0x80000000 - 1), '2^31 - 1 returns 2^31 - 1');
+		forEach([0, Infinity, NaN, 0x100000000, 0x80000000, 0x10000, 0x42], function (num) {
+			t.ok(is(ES.ToUint32(num), ES.ToUint32(ES.ToInt32(num))), 'ToUint32(x) === ToUint32(ToInt32(x)) for 0x' + num.toString(16));
+			t.ok(is(ES.ToUint32(-num), ES.ToUint32(ES.ToInt32(-num))), 'ToUint32(x) === ToUint32(ToInt32(x)) for -0x' + num.toString(16));
+		});
+		t.end();
+	});
+
+	test('ToInt16', function (t) {
+		t.ok(is(0, ES.ToInt16(NaN)), 'NaN coerces to +0');
+		forEach([0, Infinity], function (num) {
+			t.ok(is(0, ES.ToInt16(num)), num + ' returns +0');
+			t.ok(is(0, ES.ToInt16(-num)), '-' + num + ' returns +0');
+		});
+		t['throws'](function () { return ES.ToInt16(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.ok(is(ES.ToInt16(0x100000000), 0), '2^32 returns +0');
+		t.ok(is(ES.ToInt16(0x100000000 - 1), -1), '2^32 - 1 returns -1');
+		t.ok(is(ES.ToInt16(0x80000000), 0), '2^31 returns +0');
+		t.ok(is(ES.ToInt16(0x80000000 - 1), -1), '2^31 - 1 returns -1');
+		t.ok(is(ES.ToInt16(0x10000), 0), '2^16 returns +0');
+		t.ok(is(ES.ToInt16(0x10000 - 1), -1), '2^16 - 1 returns -1');
+		t.end();
+	});
+
+	test('ToUint16', function (t) {
+		t.ok(is(0, ES.ToUint16(NaN)), 'NaN coerces to +0');
+		forEach([0, Infinity], function (num) {
+			t.ok(is(0, ES.ToUint16(num)), num + ' returns +0');
+			t.ok(is(0, ES.ToUint16(-num)), '-' + num + ' returns +0');
+		});
+		t['throws'](function () { return ES.ToUint16(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.ok(is(ES.ToUint16(0x100000000), 0), '2^32 returns +0');
+		t.ok(is(ES.ToUint16(0x100000000 - 1), 0x10000 - 1), '2^32 - 1 returns 2^16 - 1');
+		t.ok(is(ES.ToUint16(0x80000000), 0), '2^31 returns +0');
+		t.ok(is(ES.ToUint16(0x80000000 - 1), 0x10000 - 1), '2^31 - 1 returns 2^16 - 1');
+		t.ok(is(ES.ToUint16(0x10000), 0), '2^16 returns +0');
+		t.ok(is(ES.ToUint16(0x10000 - 1), 0x10000 - 1), '2^16 - 1 returns 2^16 - 1');
+		t.end();
+	});
+
+	test('ToInt8', function (t) {
+		t.ok(is(0, ES.ToInt8(NaN)), 'NaN coerces to +0');
+		forEach([0, Infinity], function (num) {
+			t.ok(is(0, ES.ToInt8(num)), num + ' returns +0');
+			t.ok(is(0, ES.ToInt8(-num)), '-' + num + ' returns +0');
+		});
+		t['throws'](function () { return ES.ToInt8(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.ok(is(ES.ToInt8(0x100000000), 0), '2^32 returns +0');
+		t.ok(is(ES.ToInt8(0x100000000 - 1), -1), '2^32 - 1 returns -1');
+		t.ok(is(ES.ToInt8(0x80000000), 0), '2^31 returns +0');
+		t.ok(is(ES.ToInt8(0x80000000 - 1), -1), '2^31 - 1 returns -1');
+		t.ok(is(ES.ToInt8(0x10000), 0), '2^16 returns +0');
+		t.ok(is(ES.ToInt8(0x10000 - 1), -1), '2^16 - 1 returns -1');
+		t.ok(is(ES.ToInt8(0x100), 0), '2^8 returns +0');
+		t.ok(is(ES.ToInt8(0x100 - 1), -1), '2^8 - 1 returns -1');
+		t.ok(is(ES.ToInt8(0x10), 0x10), '2^4 returns 2^4');
+		t.end();
+	});
+
+	test('ToUint8', function (t) {
+		t.ok(is(0, ES.ToUint8(NaN)), 'NaN coerces to +0');
+		forEach([0, Infinity], function (num) {
+			t.ok(is(0, ES.ToUint8(num)), num + ' returns +0');
+			t.ok(is(0, ES.ToUint8(-num)), '-' + num + ' returns +0');
+		});
+		t['throws'](function () { return ES.ToUint8(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.ok(is(ES.ToUint8(0x100000000), 0), '2^32 returns +0');
+		t.ok(is(ES.ToUint8(0x100000000 - 1), 0x100 - 1), '2^32 - 1 returns 2^8 - 1');
+		t.ok(is(ES.ToUint8(0x80000000), 0), '2^31 returns +0');
+		t.ok(is(ES.ToUint8(0x80000000 - 1), 0x100 - 1), '2^31 - 1 returns 2^8 - 1');
+		t.ok(is(ES.ToUint8(0x10000), 0), '2^16 returns +0');
+		t.ok(is(ES.ToUint8(0x10000 - 1), 0x100 - 1), '2^16 - 1 returns 2^8 - 1');
+		t.ok(is(ES.ToUint8(0x100), 0), '2^8 returns +0');
+		t.ok(is(ES.ToUint8(0x100 - 1), 0x100 - 1), '2^8 - 1 returns 2^16 - 1');
+		t.ok(is(ES.ToUint8(0x10), 0x10), '2^4 returns 2^4');
+		t.ok(is(ES.ToUint8(0x10 - 1), 0x10 - 1), '2^4 - 1 returns 2^4 - 1');
+		t.end();
+	});
+
+	test('ToUint8Clamp', function (t) {
+		t.ok(is(0, ES.ToUint8Clamp(NaN)), 'NaN coerces to +0');
+		t.ok(is(0, ES.ToUint8Clamp(0)), '+0 returns +0');
+		t.ok(is(0, ES.ToUint8Clamp(-0)), '-0 returns +0');
+		t.ok(is(0, ES.ToUint8Clamp(-Infinity)), '-Infinity returns +0');
+		t['throws'](function () { return ES.ToUint8Clamp(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		forEach([255, 256, 0x100000, Infinity], function (number) {
+			t.ok(is(255, ES.ToUint8Clamp(number)), number + ' coerces to 255');
+		});
+		t.equal(1, ES.ToUint8Clamp(1.49), '1.49 coerces to 1');
+		t.equal(2, ES.ToUint8Clamp(1.5), '1.5 coerces to 2, because 2 is even');
+		t.equal(2, ES.ToUint8Clamp(1.51), '1.51 coerces to 2');
+
+		t.equal(2, ES.ToUint8Clamp(2.49), '2.49 coerces to 2');
+		t.equal(2, ES.ToUint8Clamp(2.5), '2.5 coerces to 2, because 2 is even');
+		t.equal(3, ES.ToUint8Clamp(2.51), '2.51 coerces to 3');
+		t.end();
+	});
+
+	test('ToString', function (t) {
+		forEach(v.objects.concat(v.nonSymbolPrimitives), function (item) {
+			t.equal(ES.ToString(item), String(item), 'ES.ToString(' + debug(item) + ') ToStrings to String(' + debug(item) + ')');
+		});
+
+		t['throws'](function () { return ES.ToString(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+
+		forEach(v.symbols, function (symbol) {
+			t['throws'](function () { return ES.ToString(symbol); }, TypeError, debug(symbol) + ' throws');
+		});
+		t.end();
+	});
+
+	test('ToObject', function (t) {
+		t['throws'](function () { return ES.ToObject(undefined); }, TypeError, 'undefined throws');
+		t['throws'](function () { return ES.ToObject(null); }, TypeError, 'null throws');
+		forEach(v.numbers, function (number) {
+			var obj = ES.ToObject(number);
+			t.equal(typeof obj, 'object', 'number ' + number + ' coerces to object');
+			t.equal(true, obj instanceof Number, 'object of ' + number + ' is Number object');
+			t.ok(is(obj.valueOf(), number), 'object of ' + number + ' coerces to ' + number);
+		});
+		t.end();
+	});
+
+	test('RequireObjectCoercible', function (t) {
+		t.equal(false, 'CheckObjectCoercible' in ES, 'CheckObjectCoercible -> RequireObjectCoercible in ES6');
+		t['throws'](function () { return ES.RequireObjectCoercible(undefined); }, TypeError, 'undefined throws');
+		t['throws'](function () { return ES.RequireObjectCoercible(null); }, TypeError, 'null throws');
+		var isCoercible = function (value) {
+			t.doesNotThrow(function () { return ES.RequireObjectCoercible(value); }, debug(value) + ' does not throw');
+		};
+		forEach(v.objects.concat(v.nonNullPrimitives), isCoercible);
+		t.end();
+	});
+
+	test('IsCallable', function (t) {
+		t.equal(true, ES.IsCallable(function () {}), 'function is callable');
+		var nonCallables = [/a/g, {}, Object.prototype, NaN].concat(v.nonFunctions);
+		forEach(nonCallables, function (nonCallable) {
+			t.equal(false, ES.IsCallable(nonCallable), debug(nonCallable) + ' is not callable');
+		});
+		t.end();
+	});
+
+	test('SameValue', function (t) {
+		t.equal(true, ES.SameValue(NaN, NaN), 'NaN is SameValue as NaN');
+		t.equal(false, ES.SameValue(0, -0), '+0 is not SameValue as -0');
+		forEach(v.objects.concat(v.primitives), function (val) {
+			t.equal(val === val, ES.SameValue(val, val), debug(val) + ' is SameValue to itself');
+		});
+		t.end();
+	});
+
+	test('SameValueZero', function (t) {
+		t.equal(true, ES.SameValueZero(NaN, NaN), 'NaN is SameValueZero as NaN');
+		t.equal(true, ES.SameValueZero(0, -0), '+0 is SameValueZero as -0');
+		forEach(v.objects.concat(v.primitives), function (val) {
+			t.equal(val === val, ES.SameValueZero(val, val), debug(val) + ' is SameValueZero to itself');
+		});
+		t.end();
+	});
+
+	test('ToPropertyKey', function (t) {
+		forEach(v.objects.concat(v.nonSymbolPrimitives), function (value) {
+			t.equal(ES.ToPropertyKey(value), String(value), 'ToPropertyKey(value) === String(value) for non-Symbols');
+		});
+
+		forEach(v.symbols, function (symbol) {
+			t.equal(
+				ES.ToPropertyKey(symbol),
+				symbol,
+				'ToPropertyKey(' + debug(symbol) + ') === ' + debug(symbol)
+			);
+			t.equal(
+				ES.ToPropertyKey(Object(symbol)),
+				symbol,
+				'ToPropertyKey(' + debug(Object(symbol)) + ') === ' + debug(symbol)
+			);
+		});
+
+		t.end();
+	});
+
+	test('ToLength', function (t) {
+		t['throws'](function () { return ES.ToLength(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws a TypeError');
+		t.equal(3, ES.ToLength(v.coercibleObject), 'coercibleObject coerces to 3');
+		t.equal(42, ES.ToLength('42.5'), '"42.5" coerces to 42');
+		t.equal(7, ES.ToLength(7.3), '7.3 coerces to 7');
+		forEach([-0, -1, -42, -Infinity], function (negative) {
+			t.ok(is(0, ES.ToLength(negative)), negative + ' coerces to +0');
+		});
+		t.equal(MAX_SAFE_INTEGER, ES.ToLength(MAX_SAFE_INTEGER + 1), '2^53 coerces to 2^53 - 1');
+		t.equal(MAX_SAFE_INTEGER, ES.ToLength(MAX_SAFE_INTEGER + 3), '2^53 + 2 coerces to 2^53 - 1');
+		t.end();
+	});
+
+	test('IsArray', function (t) {
+		t.equal(true, ES.IsArray([]), '[] is array');
+		t.equal(false, ES.IsArray({}), '{} is not array');
+		t.equal(false, ES.IsArray({ length: 1, 0: true }), 'arraylike object is not array');
+		forEach(v.objects.concat(v.primitives), function (value) {
+			t.equal(false, ES.IsArray(value), debug(value) + ' is not array');
+		});
+		t.end();
+	});
+
+	test('IsRegExp', function (t) {
+		forEach([/a/g, new RegExp('a', 'g')], function (regex) {
+			t.equal(true, ES.IsRegExp(regex), regex + ' is regex');
+		});
+
+		forEach(v.objects.concat(v.primitives), function (nonRegex) {
+			t.equal(false, ES.IsRegExp(nonRegex), debug(nonRegex) + ' is not regex');
+		});
+
+		t.test('Symbol.match', { skip: !v.hasSymbols || !Symbol.match }, function (st) {
+			var obj = {};
+			obj[Symbol.match] = true;
+			st.equal(true, ES.IsRegExp(obj), 'object with truthy Symbol.match is regex');
+
+			var regex = /a/;
+			defineProperty(regex, Symbol.match, { value: false });
+			st.equal(false, ES.IsRegExp(regex), 'regex with falsy Symbol.match is not regex');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('IsPropertyKey', function (t) {
+		forEach(v.numbers.concat(v.objects), function (notKey) {
+			t.equal(false, ES.IsPropertyKey(notKey), debug(notKey) + ' is not property key');
+		});
+
+		t.equal(true, ES.IsPropertyKey('foo'), 'string is property key');
+
+		forEach(v.symbols, function (symbol) {
+			t.equal(true, ES.IsPropertyKey(symbol), debug(symbol) + ' is property key');
+		});
+		t.end();
+	});
+
+	test('IsInteger', function (t) {
+		for (var i = -100; i < 100; i += 10) {
+			t.equal(true, ES.IsInteger(i), i + ' is integer');
+			t.equal(false, ES.IsInteger(i + 0.2), (i + 0.2) + ' is not integer');
+		}
+		t.equal(true, ES.IsInteger(-0), '-0 is integer');
+		var notInts = v.nonNumbers.concat(v.nonIntegerNumbers, v.infinities, [NaN, [], new Date()]);
+		forEach(notInts, function (notInt) {
+			t.equal(false, ES.IsInteger(notInt), debug(notInt) + ' is not integer');
+		});
+		t.equal(false, ES.IsInteger(v.uncoercibleObject), 'uncoercibleObject is not integer');
+		t.end();
+	});
+
+	test('IsExtensible', function (t) {
+		forEach(v.objects, function (object) {
+			t.equal(true, ES.IsExtensible(object), debug(object) + ' object is extensible');
+		});
+		forEach(v.primitives, function (primitive) {
+			t.equal(false, ES.IsExtensible(primitive), debug(primitive) + ' is not extensible');
+		});
+		if (Object.preventExtensions) {
+			t.equal(false, ES.IsExtensible(Object.preventExtensions({})), 'object with extensions prevented is not extensible');
+		}
+		t.end();
+	});
+
+	test('CanonicalNumericIndexString', function (t) {
+		var throwsOnNonString = function (notString) {
+			t['throws'](
+				function () { return ES.CanonicalNumericIndexString(notString); },
+				TypeError,
+				debug(notString) + ' is not a string'
+			);
+		};
+		forEach(v.objects.concat(v.numbers), throwsOnNonString);
+		t.ok(is(-0, ES.CanonicalNumericIndexString('-0')), '"-0" returns -0');
+		for (var i = -50; i < 50; i += 10) {
+			t.equal(i, ES.CanonicalNumericIndexString(String(i)), '"' + i + '" returns ' + i);
+			t.equal(undefined, ES.CanonicalNumericIndexString(String(i) + 'a'), '"' + i + 'a" returns undefined');
+		}
+		t.end();
+	});
+
+	test('IsConstructor', function (t) {
+		t.equal(true, ES.IsConstructor(function () {}), 'function is constructor');
+		t.equal(false, ES.IsConstructor(/a/g), 'regex is not constructor');
+		forEach(v.objects, function (object) {
+			t.equal(false, ES.IsConstructor(object), object + ' object is not constructor');
+		});
+
+		try {
+			var arrow = Function('return () => {}')(); // eslint-disable-line no-new-func
+			t.equal(ES.IsConstructor(arrow), false, 'arrow function is not constructor');
+		} catch (e) {
+			t.comment('SKIP: arrow function syntax not supported.');
+		}
+
+		try {
+			var foo = Function('return class Foo {}')(); // eslint-disable-line no-new-func
+			t.equal(ES.IsConstructor(foo), true, 'class is constructor');
+		} catch (e) {
+			t.comment('SKIP: class syntax not supported.');
+		}
+
+		if (typeof Reflect !== 'object' || typeof Proxy !== 'function' || has(Proxy, 'prototype')) {
+			t.comment('SKIP: Proxy is constructor');
+		} else {
+			t.equal(ES.IsConstructor(Proxy), true, 'Proxy is constructor');
+		}
+
+		t.end();
+	});
+
+	test('Call', function (t) {
+		var receiver = {};
+		var notFuncs = v.nonFunctions.concat([/a/g, new RegExp('a', 'g')]);
+		t.plan(notFuncs.length + 5);
+		var throwsIfNotCallable = function (notFunc) {
+			t['throws'](
+				function () { return ES.Call(notFunc, receiver); },
+				TypeError,
+				debug(notFunc) + ' (' + typeof notFunc + ') is not callable'
+			);
+		};
+		forEach(notFuncs, throwsIfNotCallable);
+		ES.Call(
+			function (a, b) {
+				t.equal(this, receiver, 'context matches expected');
+				t.deepEqual([a, b], [1, 2], 'named args are correct');
+				t.equal(arguments.length, 3, 'extra argument was passed');
+				t.equal(arguments[2], 3, 'extra argument was correct');
+			},
+			receiver,
+			[1, 2, 3]
+		);
+
+		t.test('Call doesn’t use func.apply', function (st) {
+			st.plan(4);
+
+			var bad = function (a, b) {
+				st.equal(this, receiver, 'context matches expected');
+				st.deepEqual([a, b], [1, 2], 'named args are correct');
+				st.equal(arguments.length, 3, 'extra argument was passed');
+				st.equal(arguments[2], 3, 'extra argument was correct');
+			};
+
+			defineProperty(bad, 'apply', {
+				value: function () {
+					st.fail('bad.apply shouldn’t get called');
+				}
+			});
+
+			ES.Call(bad, receiver, [1, 2, 3]);
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('GetV', function (t) {
+		t['throws'](function () { return ES.GetV({ 7: 7 }, 7); }, TypeError, 'Throws a TypeError if `P` is not a property key');
+		var obj = { a: function () {} };
+		t.equal(ES.GetV(obj, 'a'), obj.a, 'returns property if it exists');
+		t.equal(ES.GetV(obj, 'b'), undefined, 'returns undefiend if property does not exist');
+		t.end();
+	});
+
+	test('GetMethod', function (t) {
+		t['throws'](function () { return ES.GetMethod({ 7: 7 }, 7); }, TypeError, 'Throws a TypeError if `P` is not a property key');
+		t.equal(ES.GetMethod({}, 'a'), undefined, 'returns undefined in property is undefined');
+		t.equal(ES.GetMethod({ a: null }, 'a'), undefined, 'returns undefined if property is null');
+		t.equal(ES.GetMethod({ a: undefined }, 'a'), undefined, 'returns undefined if property is undefined');
+		var obj = { a: function () {} };
+		t['throws'](function () { ES.GetMethod({ a: 'b' }, 'a'); }, TypeError, 'throws TypeError if property exists and is not callable');
+		t.equal(ES.GetMethod(obj, 'a'), obj.a, 'returns property if it is callable');
+		t.end();
+	});
+
+	test('Get', function (t) {
+		t['throws'](function () { return ES.Get('a', 'a'); }, TypeError, 'Throws a TypeError if `O` is not an Object');
+		t['throws'](function () { return ES.Get({ 7: 7 }, 7); }, TypeError, 'Throws a TypeError if `P` is not a property key');
+
+		var value = {};
+		t.test('Symbols', { skip: !v.hasSymbols }, function (st) {
+			var sym = Symbol('sym');
+			var obj = {};
+			obj[sym] = value;
+			st.equal(ES.Get(obj, sym), value, 'returns property `P` if it exists on object `O`');
+			st.end();
+		});
+		t.equal(ES.Get({ a: value }, 'a'), value, 'returns property `P` if it exists on object `O`');
+		t.end();
+	});
+
+	test('Type', { skip: !v.hasSymbols }, function (t) {
+		t.equal(ES.Type(Symbol.iterator), 'Symbol', 'Type(Symbol.iterator) is Symbol');
+		t.end();
+	});
+
+	test('SpeciesConstructor', function (t) {
+		t['throws'](function () { ES.SpeciesConstructor(null); }, TypeError);
+		t['throws'](function () { ES.SpeciesConstructor(undefined); }, TypeError);
+
+		var defaultConstructor = function Foo() {};
+
+		t.equal(
+			ES.SpeciesConstructor({ constructor: undefined }, defaultConstructor),
+			defaultConstructor,
+			'undefined constructor returns defaultConstructor'
+		);
+
+		t['throws'](
+			function () { return ES.SpeciesConstructor({ constructor: null }, defaultConstructor); },
+			TypeError,
+			'non-undefined non-object constructor throws'
+		);
+
+		t.test('with Symbol.species', { skip: !hasSpecies }, function (st) {
+			var Bar = function Bar() {};
+			Bar[Symbol.species] = null;
+
+			st.equal(
+				ES.SpeciesConstructor(new Bar(), defaultConstructor),
+				defaultConstructor,
+				'undefined/null Symbol.species returns default constructor'
+			);
+
+			var Baz = function Baz() {};
+			Baz[Symbol.species] = Bar;
+			st.equal(
+				ES.SpeciesConstructor(new Baz(), defaultConstructor),
+				Bar,
+				'returns Symbol.species constructor value'
+			);
+
+			Baz[Symbol.species] = {};
+			st['throws'](
+				function () { ES.SpeciesConstructor(new Baz(), defaultConstructor); },
+				TypeError,
+				'throws when non-constructor non-null non-undefined species value found'
+			);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('IsPropertyDescriptor', { skip: skips && skips.IsPropertyDescriptor }, function (t) {
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t.equal(
+				ES.IsPropertyDescriptor(primitive),
+				false,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		t.equal(ES.IsPropertyDescriptor({ invalid: true }), false, 'invalid keys not allowed on a Property Descriptor');
+
+		t.equal(ES.IsPropertyDescriptor({}), true, 'empty object is an incomplete Property Descriptor');
+
+		t.equal(ES.IsPropertyDescriptor(v.accessorDescriptor()), true, 'accessor descriptor is a Property Descriptor');
+		t.equal(ES.IsPropertyDescriptor(v.mutatorDescriptor()), true, 'mutator descriptor is a Property Descriptor');
+		t.equal(ES.IsPropertyDescriptor(v.dataDescriptor()), true, 'data descriptor is a Property Descriptor');
+		t.equal(ES.IsPropertyDescriptor(v.genericDescriptor()), true, 'generic descriptor is a Property Descriptor');
+
+		t['throws'](
+			function () { ES.IsPropertyDescriptor(v.bothDescriptor()); },
+			TypeError,
+			'a Property Descriptor can not be both a Data and an Accessor Descriptor'
+		);
+
+		t.end();
+	});
+
+	assertRecordTests(ES, test);
+
+	test('IsAccessorDescriptor', function (t) {
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.IsAccessorDescriptor(primitive); },
+				TypeError,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		t.equal(ES.IsAccessorDescriptor(), false, 'no value is not an Accessor Descriptor');
+		t.equal(ES.IsAccessorDescriptor(undefined), false, 'undefined value is not an Accessor Descriptor');
+
+		t.equal(ES.IsAccessorDescriptor(v.accessorDescriptor()), true, 'accessor descriptor is an Accessor Descriptor');
+		t.equal(ES.IsAccessorDescriptor(v.mutatorDescriptor()), true, 'mutator descriptor is an Accessor Descriptor');
+		t.equal(ES.IsAccessorDescriptor(v.dataDescriptor()), false, 'data descriptor is not an Accessor Descriptor');
+		t.equal(ES.IsAccessorDescriptor(v.genericDescriptor()), false, 'generic descriptor is not an Accessor Descriptor');
+
+		t.end();
+	});
+
+	test('IsDataDescriptor', function (t) {
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.IsDataDescriptor(primitive); },
+				TypeError,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		t.equal(ES.IsDataDescriptor(), false, 'no value is not a Data Descriptor');
+		t.equal(ES.IsDataDescriptor(undefined), false, 'undefined value is not a Data Descriptor');
+
+		t.equal(ES.IsDataDescriptor(v.accessorDescriptor()), false, 'accessor descriptor is not a Data Descriptor');
+		t.equal(ES.IsDataDescriptor(v.mutatorDescriptor()), false, 'mutator descriptor is not a Data Descriptor');
+		t.equal(ES.IsDataDescriptor(v.dataDescriptor()), true, 'data descriptor is a Data Descriptor');
+		t.equal(ES.IsDataDescriptor(v.genericDescriptor()), false, 'generic descriptor is not a Data Descriptor');
+
+		t.end();
+	});
+
+	test('IsGenericDescriptor', function (t) {
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.IsGenericDescriptor(primitive); },
+				TypeError,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		t.equal(ES.IsGenericDescriptor(), false, 'no value is not a Data Descriptor');
+		t.equal(ES.IsGenericDescriptor(undefined), false, 'undefined value is not a Data Descriptor');
+
+		t.equal(ES.IsGenericDescriptor(v.accessorDescriptor()), false, 'accessor descriptor is not a generic Descriptor');
+		t.equal(ES.IsGenericDescriptor(v.mutatorDescriptor()), false, 'mutator descriptor is not a generic Descriptor');
+		t.equal(ES.IsGenericDescriptor(v.dataDescriptor()), false, 'data descriptor is not a generic Descriptor');
+
+		t.equal(ES.IsGenericDescriptor(v.genericDescriptor()), true, 'generic descriptor is a generic Descriptor');
+
+		t.end();
+	});
+
+	test('FromPropertyDescriptor', function (t) {
+		t.equal(ES.FromPropertyDescriptor(), undefined, 'no value begets undefined');
+		t.equal(ES.FromPropertyDescriptor(undefined), undefined, 'undefined value begets undefined');
+
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.FromPropertyDescriptor(primitive); },
+				TypeError,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		var accessor = v.accessorDescriptor();
+		t.deepEqual(ES.FromPropertyDescriptor(accessor), {
+			get: accessor['[[Get]]'],
+			enumerable: !!accessor['[[Enumerable]]'],
+			configurable: !!accessor['[[Configurable]]']
+		});
+
+		var mutator = v.mutatorDescriptor();
+		t.deepEqual(ES.FromPropertyDescriptor(mutator), {
+			set: mutator['[[Set]]'],
+			enumerable: !!mutator['[[Enumerable]]'],
+			configurable: !!mutator['[[Configurable]]']
+		});
+		var data = v.dataDescriptor();
+		t.deepEqual(ES.FromPropertyDescriptor(data), {
+			value: data['[[Value]]'],
+			writable: data['[[Writable]]']
+		});
+
+		t.deepEqual(ES.FromPropertyDescriptor(v.genericDescriptor()), {
+			enumerable: false,
+			configurable: true
+		});
+
+		t.end();
+	});
+
+	test('ToPropertyDescriptor', function (t) {
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.ToPropertyDescriptor(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		var accessor = v.accessorDescriptor();
+		t.deepEqual(ES.ToPropertyDescriptor({
+			get: accessor['[[Get]]'],
+			enumerable: !!accessor['[[Enumerable]]'],
+			configurable: !!accessor['[[Configurable]]']
+		}), accessor);
+
+		var mutator = v.mutatorDescriptor();
+		t.deepEqual(ES.ToPropertyDescriptor({
+			set: mutator['[[Set]]'],
+			enumerable: !!mutator['[[Enumerable]]'],
+			configurable: !!mutator['[[Configurable]]']
+		}), mutator);
+
+		var data = v.dataDescriptor();
+		t.deepEqual(ES.ToPropertyDescriptor({
+			value: data['[[Value]]'],
+			writable: data['[[Writable]]'],
+			configurable: !!data['[[Configurable]]']
+		}), assign(data, { '[[Configurable]]': false }));
+
+		var both = v.bothDescriptor();
+		t['throws'](
+			function () {
+				ES.FromPropertyDescriptor({ get: both['[[Get]]'], value: both['[[Value]]'] });
+			},
+			TypeError,
+			'data and accessor descriptors are mutually exclusive'
+		);
+
+		t.end();
+	});
+
+	test('CompletePropertyDescriptor', function (t) {
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.CompletePropertyDescriptor(primitive); },
+				TypeError,
+				debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		var generic = v.genericDescriptor();
+		t.deepEqual(
+			ES.CompletePropertyDescriptor(generic),
+			{
+				'[[Configurable]]': !!generic['[[Configurable]]'],
+				'[[Enumerable]]': !!generic['[[Enumerable]]'],
+				'[[Value]]': undefined,
+				'[[Writable]]': false
+			},
+			'completes a Generic Descriptor'
+		);
+
+		var data = v.dataDescriptor();
+		t.deepEqual(
+			ES.CompletePropertyDescriptor(data),
+			{
+				'[[Configurable]]': !!data['[[Configurable]]'],
+				'[[Enumerable]]': false,
+				'[[Value]]': data['[[Value]]'],
+				'[[Writable]]': !!data['[[Writable]]']
+			},
+			'completes a Data Descriptor'
+		);
+
+		var accessor = v.accessorDescriptor();
+		t.deepEqual(
+			ES.CompletePropertyDescriptor(accessor),
+			{
+				'[[Get]]': accessor['[[Get]]'],
+				'[[Enumerable]]': !!accessor['[[Enumerable]]'],
+				'[[Configurable]]': !!accessor['[[Configurable]]'],
+				'[[Set]]': undefined
+			},
+			'completes an Accessor Descriptor'
+		);
+
+		var mutator = v.mutatorDescriptor();
+		t.deepEqual(
+			ES.CompletePropertyDescriptor(mutator),
+			{
+				'[[Set]]': mutator['[[Set]]'],
+				'[[Enumerable]]': !!mutator['[[Enumerable]]'],
+				'[[Configurable]]': !!mutator['[[Configurable]]'],
+				'[[Get]]': undefined
+			},
+			'completes a mutator Descriptor'
+		);
+
+		t['throws'](
+			function () { ES.CompletePropertyDescriptor(v.bothDescriptor()); },
+			TypeError,
+			'data and accessor descriptors are mutually exclusive'
+		);
+
+		t.end();
+	});
+
+	test('Set', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.Set(primitive, '', null, false); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonKey) {
+			t['throws'](
+				function () { ES.Set({}, nonKey, null, false); },
+				TypeError,
+				debug(nonKey) + ' is not a Property Key'
+			);
+		});
+
+		forEach(v.nonBooleans, function (nonBoolean) {
+			t['throws'](
+				function () { ES.Set({}, '', null, nonBoolean); },
+				TypeError,
+				debug(nonBoolean) + ' is not a Boolean'
+			);
+		});
+
+		var o = {};
+		var value = {};
+		ES.Set(o, 'key', value, true);
+		t.deepEqual(o, { key: value }, 'key is set');
+
+		t.test('nonwritable', { skip: !defineProperty.oDP }, function (st) {
+			var obj = { a: value };
+			defineProperty(obj, 'a', { writable: false });
+
+			st['throws'](
+				function () { ES.Set(obj, 'a', {}, true); },
+				TypeError,
+				'can not Set nonwritable property'
+			);
+
+			st.doesNotThrow(
+				function () {
+					st.equal(ES.Set(obj, 'a', {}, false), false, 'unsuccessful Set returns false');
+				},
+				'setting Throw to false prevents an exception'
+			);
+
+			st.end();
+		});
+
+		t.test('nonconfigurable', { skip: !defineProperty.oDP }, function (st) {
+			var obj = { a: value };
+			defineProperty(obj, 'a', { configurable: false });
+
+			st.equal(ES.Set(obj, 'a', value, true), true, 'successful Set returns true');
+			st.deepEqual(obj, { a: value }, 'key is set');
+
+			st.end();
+		});
+
+		t.test('doesn’t call [[Get]] in conforming strict mode environments', { skip: noThrowOnStrictViolation }, function (st) {
+			var getterCalled = false;
+			var setterCalls = 0;
+			var obj = {};
+			defineProperty(obj, 'a', {
+				get: function () {
+					getterCalled = true;
+				},
+				set: function () {
+					setterCalls += 1;
+				}
+			});
+
+			st.equal(ES.Set(obj, 'a', value, false), true, 'successful Set returns true');
+			st.equal(setterCalls, 1, 'setter was called once');
+			st.equal(getterCalled, false, 'getter was not called');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('HasOwnProperty', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.HasOwnProperty(primitive, 'key'); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonKey) {
+			t['throws'](
+				function () { ES.HasOwnProperty({}, nonKey); },
+				TypeError,
+				debug(nonKey) + ' is not a Property Key'
+			);
+		});
+
+		t.equal(ES.HasOwnProperty({}, 'toString'), false, 'inherited properties are not own');
+		t.equal(
+			ES.HasOwnProperty({ toString: 1 }, 'toString'),
+			true,
+			'shadowed inherited own properties are own'
+		);
+		t.equal(ES.HasOwnProperty({ a: 1 }, 'a'), true, 'own properties are own');
+
+		t.end();
+	});
+
+	test('HasProperty', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.HasProperty(primitive, 'key'); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonKey) {
+			t['throws'](
+				function () { ES.HasProperty({}, nonKey); },
+				TypeError,
+				debug(nonKey) + ' is not a Property Key'
+			);
+		});
+
+		t.equal(ES.HasProperty({}, 'nope'), false, 'object does not have nonexistent properties');
+		t.equal(ES.HasProperty({}, 'toString'), true, 'object has inherited properties');
+		t.equal(
+			ES.HasProperty({ toString: 1 }, 'toString'),
+			true,
+			'object has shadowed inherited own properties'
+		);
+		t.equal(ES.HasProperty({ a: 1 }, 'a'), true, 'object has own properties');
+
+		t.end();
+	});
+
+	test('IsConcatSpreadable', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t.equal(ES.IsConcatSpreadable(primitive), false, debug(primitive) + ' is not an Object');
+		});
+
+		var hasSymbolConcatSpreadable = v.hasSymbols && Symbol.isConcatSpreadable;
+		t.test('Symbol.isConcatSpreadable', { skip: !hasSymbolConcatSpreadable }, function (st) {
+			forEach(v.falsies, function (falsy) {
+				var obj = {};
+				obj[Symbol.isConcatSpreadable] = falsy;
+				st.equal(
+					ES.IsConcatSpreadable(obj),
+					false,
+					'an object with ' + debug(falsy) + ' as Symbol.isConcatSpreadable is not concat spreadable'
+				);
+			});
+
+			forEach(v.truthies, function (truthy) {
+				var obj = {};
+				obj[Symbol.isConcatSpreadable] = truthy;
+				st.equal(
+					ES.IsConcatSpreadable(obj),
+					true,
+					'an object with ' + debug(truthy) + ' as Symbol.isConcatSpreadable is concat spreadable'
+				);
+			});
+
+			st.end();
+		});
+
+		forEach(v.objects, function (object) {
+			t.equal(
+				ES.IsConcatSpreadable(object),
+				false,
+				'non-array without Symbol.isConcatSpreadable is not concat spreadable'
+			);
+		});
+
+		t.equal(ES.IsConcatSpreadable([]), true, 'arrays are concat spreadable');
+
+		t.end();
+	});
+
+	test('Invoke', function (t) {
+		forEach(v.nonPropertyKeys, function (nonKey) {
+			t['throws'](
+				function () { ES.Invoke({}, nonKey); },
+				TypeError,
+				debug(nonKey) + ' is not a Property Key'
+			);
+		});
+
+		t['throws'](function () { ES.Invoke({ o: false }, 'o'); }, TypeError, 'fails on a non-function');
+
+		t.test('invoked callback', function (st) {
+			var aValue = {};
+			var bValue = {};
+			var obj = {
+				f: function (a) {
+					st.equal(arguments.length, 2, '2 args passed');
+					st.equal(a, aValue, 'first arg is correct');
+					st.equal(arguments[1], bValue, 'second arg is correct');
+				}
+			};
+			st.plan(3);
+			ES.Invoke(obj, 'f', aValue, bValue);
+		});
+
+		t.end();
+	});
+
+	test('GetIterator', function (t) {
+		var arr = [1, 2];
+		testIterator(t, ES.GetIterator(arr), arr);
+
+		testIterator(t, ES.GetIterator('abc'), 'abc'.split(''));
+
+		t.test('Symbol.iterator', { skip: !v.hasSymbols }, function (st) {
+			var m = new Map();
+			m.set(1, 'a');
+			m.set(2, 'b');
+
+			testIterator(st, ES.GetIterator(m), [[1, 'a'], [2, 'b']]);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('IteratorNext', { skip: true });
+
+	test('IteratorComplete', { skip: true });
+
+	test('IteratorValue', { skip: true });
+
+	test('IteratorStep', { skip: true });
+
+	test('IteratorClose', { skip: true });
+
+	test('CreateIterResultObject', function (t) {
+		forEach(v.nonBooleans, function (nonBoolean) {
+			t['throws'](
+				function () { ES.CreateIterResultObject({}, nonBoolean); },
+				TypeError,
+				'"done" argument must be a boolean; ' + debug(nonBoolean) + ' is not'
+			);
+		});
+
+		var value = {};
+		t.deepEqual(
+			ES.CreateIterResultObject(value, true),
+			{ value: value, done: true },
+			'creates a "done" iteration result'
+		);
+		t.deepEqual(
+			ES.CreateIterResultObject(value, false),
+			{ value: value, done: false },
+			'creates a "not done" iteration result'
+		);
+
+		t.end();
+	});
+
+	test('RegExpExec', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.RegExpExec(primitive); },
+				TypeError,
+				'"R" argument must be an object; ' + debug(primitive) + ' is not'
+			);
+		});
+
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.RegExpExec({}, nonString); },
+				TypeError,
+				'"S" argument must be a String; ' + debug(nonString) + ' is not'
+			);
+		});
+
+		t.test('gets and calls a callable "exec"', function (st) {
+			var str = '123';
+			var o = {
+				exec: function (S) {
+					st.equal(this, o, '"exec" receiver is R');
+					st.equal(S, str, '"exec" argument is S');
+
+					return null;
+				}
+			};
+			st.plan(2);
+			ES.RegExpExec(o, str);
+			st.end();
+		});
+
+		t.test('throws if a callable "exec" returns a non-null non-object', function (st) {
+			var str = '123';
+			st.plan(v.nonNullPrimitives.length);
+			forEach(v.nonNullPrimitives, function (nonNullPrimitive) {
+				st['throws'](
+					function () { ES.RegExpExec({ exec: function () { return nonNullPrimitive; } }, str); },
+					TypeError,
+					'"exec" method must return `null` or an Object; ' + debug(nonNullPrimitive) + ' is not'
+				);
+			});
+			st.end();
+		});
+
+		t.test('actual regex that should match against a string', function (st) {
+			var S = 'aabc';
+			var R = /a/g;
+			var match1 = ES.RegExpExec(R, S);
+			var expected1 = assign(['a'], kludgeMatch(R, { index: 0, input: S }));
+			var match2 = ES.RegExpExec(R, S);
+			var expected2 = assign(['a'], kludgeMatch(R, { index: 1, input: S }));
+			var match3 = ES.RegExpExec(R, S);
+			st.deepEqual(match1, expected1, 'match object 1 is as expected');
+			st.deepEqual(match2, expected2, 'match object 2 is as expected');
+			st.equal(match3, null, 'match 3 is null as expected');
+			st.end();
+		});
+
+		t.test('actual regex that should match against a string, with shadowed "exec"', function (st) {
+			var S = 'aabc';
+			var R = /a/g;
+			defineProperty(R, 'exec', { value: undefined });
+			var match1 = ES.RegExpExec(R, S);
+			var expected1 = assign(['a'], kludgeMatch(R, { index: 0, input: S }));
+			var match2 = ES.RegExpExec(R, S);
+			var expected2 = assign(['a'], kludgeMatch(R, { index: 1, input: S }));
+			var match3 = ES.RegExpExec(R, S);
+			st.deepEqual(match1, expected1, 'match object 1 is as expected');
+			st.deepEqual(match2, expected2, 'match object 2 is as expected');
+			st.equal(match3, null, 'match 3 is null as expected');
+			st.end();
+		});
+		t.end();
+	});
+
+	test('ArraySpeciesCreate', function (t) {
+		t.test('errors', function (st) {
+			var testNonNumber = function (nonNumber) {
+				st['throws'](
+					function () { ES.ArraySpeciesCreate([], nonNumber); },
+					TypeError,
+					debug(nonNumber) + ' is not a number'
+				);
+			};
+			forEach(v.nonNumbers, testNonNumber);
+
+			st['throws'](
+				function () { ES.ArraySpeciesCreate([], -1); },
+				TypeError,
+				'-1 is not >= 0'
+			);
+			st['throws'](
+				function () { ES.ArraySpeciesCreate([], -Infinity); },
+				TypeError,
+				'-Infinity is not >= 0'
+			);
+
+			var testNonIntegers = function (nonInteger) {
+				st['throws'](
+					function () { ES.ArraySpeciesCreate([], nonInteger); },
+					TypeError,
+					debug(nonInteger) + ' is not an integer'
+				);
+			};
+			forEach(v.nonIntegerNumbers, testNonIntegers);
+
+			st.end();
+		});
+
+		t.test('works with a non-array', function (st) {
+			forEach(v.objects.concat(v.primitives), function (nonArray) {
+				var arr = ES.ArraySpeciesCreate(nonArray, 0);
+				st.ok(ES.IsArray(arr), 'is an array');
+				st.equal(arr.length, 0, 'length is correct');
+				st.equal(arr.constructor, Array, 'constructor is correct');
+			});
+
+			st.end();
+		});
+
+		t.test('works with a normal array', function (st) {
+			var len = 2;
+			var orig = [1, 2, 3];
+			var arr = ES.ArraySpeciesCreate(orig, len);
+
+			st.ok(ES.IsArray(arr), 'is an array');
+			st.equal(arr.length, len, 'length is correct');
+			st.equal(arr.constructor, orig.constructor, 'constructor is correct');
+
+			st.end();
+		});
+
+		t.test('-0 length produces +0 length', function (st) {
+			var len = -0;
+			st.ok(is(len, -0), '-0 is negative zero');
+			st.notOk(is(len, 0), '-0 is not positive zero');
+
+			var orig = [1, 2, 3];
+			var arr = ES.ArraySpeciesCreate(orig, len);
+
+			st.equal(ES.IsArray(arr), true);
+			st.ok(is(arr.length, 0));
+			st.equal(arr.constructor, orig.constructor);
+
+			st.end();
+		});
+
+		t.test('works with species construtor', { skip: !hasSpecies }, function (st) {
+			var sentinel = {};
+			var Foo = function Foo(len) {
+				this.length = len;
+				this.sentinel = sentinel;
+			};
+			var Bar = getArraySubclassWithSpeciesConstructor(Foo);
+			var bar = new Bar();
+
+			st.equal(ES.IsArray(bar), true, 'Bar instance is an array');
+
+			var arr = ES.ArraySpeciesCreate(bar, 3);
+			st.equal(arr.constructor, Foo, 'result used species constructor');
+			st.equal(arr.length, 3, 'length property is correct');
+			st.equal(arr.sentinel, sentinel, 'Foo constructor was exercised');
+
+			st.end();
+		});
+
+		t.test('works with null species constructor', { skip: !hasSpecies }, function (st) {
+			var Bar = getArraySubclassWithSpeciesConstructor(null);
+			var bar = new Bar();
+
+			st.equal(ES.IsArray(bar), true, 'Bar instance is an array');
+
+			var arr = ES.ArraySpeciesCreate(bar, 3);
+			st.equal(arr.constructor, Array, 'result used default constructor');
+			st.equal(arr.length, 3, 'length property is correct');
+
+			st.end();
+		});
+
+		t.test('works with undefined species constructor', { skip: !hasSpecies }, function (st) {
+			var Bar = getArraySubclassWithSpeciesConstructor();
+			var bar = new Bar();
+
+			st.equal(ES.IsArray(bar), true, 'Bar instance is an array');
+
+			var arr = ES.ArraySpeciesCreate(bar, 3);
+			st.equal(arr.constructor, Array, 'result used default constructor');
+			st.equal(arr.length, 3, 'length property is correct');
+
+			st.end();
+		});
+
+		t.test('throws with object non-construtor species constructor', { skip: !hasSpecies }, function (st) {
+			forEach(v.objects, function (obj) {
+				var Bar = getArraySubclassWithSpeciesConstructor(obj);
+				var bar = new Bar();
+
+				st.equal(ES.IsArray(bar), true, 'Bar instance is an array');
+
+				st['throws'](
+					function () { ES.ArraySpeciesCreate(bar, 3); },
+					TypeError,
+					debug(obj) + ' is not a constructor'
+				);
+			});
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('CreateDataProperty', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.CreateDataProperty(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.CreateDataProperty({}, nonPropertyKey); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a property key'
+			);
+		});
+
+		var sentinel = { id: 'sentinel' };
+		var secondSentinel = { id: 'second sentinel' };
+		forEach(v.propertyKeys, function (propertyKey) {
+			var obj = {};
+			var status = ES.CreateDataProperty(obj, propertyKey, sentinel);
+			t.equal(status, true, 'status is true');
+			t.equal(
+				obj[propertyKey],
+				sentinel,
+				debug(sentinel) + ' is installed on "' + debug(propertyKey) + '" on the object'
+			);
+			var secondStatus = ES.CreateDataProperty(obj, propertyKey, secondSentinel);
+			t.equal(secondStatus, true, 'second status is true');
+			t.equal(
+				obj[propertyKey],
+				secondSentinel,
+				debug(secondSentinel) + ' is installed on "' + debug(propertyKey) + '" on the object'
+			);
+
+			t.test('with defineProperty', { skip: !defineProperty.oDP }, function (st) {
+				var nonWritable = defineProperty({}, propertyKey, { configurable: true, writable: false });
+
+				var nonWritableStatus = ES.CreateDataProperty(nonWritable, propertyKey, sentinel);
+				st.equal(nonWritableStatus, false, 'create data property failed');
+				st.notEqual(
+					nonWritable[propertyKey],
+					sentinel,
+					debug(sentinel) + ' is not installed on "' + debug(propertyKey) + '" on the object when key is nonwritable'
+				);
+
+				var nonConfigurable = defineProperty({}, propertyKey, { configurable: false, writable: true });
+
+				var nonConfigurableStatus = ES.CreateDataProperty(nonConfigurable, propertyKey, sentinel);
+				st.equal(nonConfigurableStatus, false, 'create data property failed');
+				st.notEqual(
+					nonConfigurable[propertyKey],
+					sentinel,
+					debug(sentinel) + ' is not installed on "' + debug(propertyKey) + '" on the object when key is nonconfigurable'
+				);
+				st.end();
+			});
+		});
+
+		t.end();
+	});
+
+	test('CreateDataPropertyOrThrow', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.CreateDataPropertyOrThrow(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.CreateDataPropertyOrThrow({}, nonPropertyKey); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a property key'
+			);
+		});
+
+		var sentinel = {};
+		forEach(v.propertyKeys, function (propertyKey) {
+			var obj = {};
+			var status = ES.CreateDataPropertyOrThrow(obj, propertyKey, sentinel);
+			t.equal(status, true, 'status is true');
+			t.equal(
+				obj[propertyKey],
+				sentinel,
+				debug(sentinel) + ' is installed on "' + debug(propertyKey) + '" on the object'
+			);
+
+			if (typeof Object.preventExtensions === 'function') {
+				var notExtensible = {};
+				Object.preventExtensions(notExtensible);
+
+				t['throws'](
+					function () { ES.CreateDataPropertyOrThrow(notExtensible, propertyKey, sentinel); },
+					TypeError,
+					'can not install ' + debug(propertyKey) + ' on non-extensible object'
+				);
+				t.notEqual(
+					notExtensible[propertyKey],
+					sentinel,
+					debug(sentinel) + ' is not installed on "' + debug(propertyKey) + '" on the object'
+				);
+			}
+		});
+
+		t.end();
+	});
+
+	test('ObjectCreate', { skip: skips && skips.ObjectCreate }, function (t) {
+		forEach(v.nonNullPrimitives, function (value) {
+			t['throws'](
+				function () { ES.ObjectCreate(value); },
+				TypeError,
+				debug(value) + ' is not null, or an object'
+			);
+		});
+
+		t.test('proto arg', function (st) {
+			var Parent = function Parent() {};
+			Parent.prototype.foo = {};
+			var child = ES.ObjectCreate(Parent.prototype);
+			st.equal(child instanceof Parent, true, 'child is instanceof Parent');
+			st.equal(child.foo, Parent.prototype.foo, 'child inherits properties from Parent.prototype');
+
+			st.end();
+		});
+
+		t.test('internal slots arg', function (st) {
+			st.doesNotThrow(function () { ES.ObjectCreate({}, []); }, 'an empty slot list is valid');
+
+			st['throws'](
+				function () { ES.ObjectCreate({}, ['a']); },
+				SyntaxError,
+				'internal slots are not supported'
+			);
+
+			st.end();
+		});
+
+		t.test('null proto', { skip: !Object.create && !$setProto }, function (st) {
+			st.equal('toString' in {}, true, 'normal objects have toString');
+			st.equal('toString' in ES.ObjectCreate(null), false, 'makes a null object');
+
+			st.end();
+		});
+
+		t.test('null proto when no native Object.create', { skip: Object.create || $setProto }, function (st) {
+			st['throws'](
+				function () { ES.ObjectCreate(null); },
+				SyntaxError,
+				'without a native Object.create, can not create null objects'
+			);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('AdvanceStringIndex', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.AdvanceStringIndex(nonString); },
+				TypeError,
+				'"S" argument must be a String; ' + debug(nonString) + ' is not'
+			);
+		});
+
+		var notInts = v.nonNumbers.concat(
+			v.nonIntegerNumbers,
+			v.infinities,
+			[NaN, [], new Date(), Math.pow(2, 53), -1]
+		);
+		forEach(notInts, function (nonInt) {
+			t['throws'](
+				function () { ES.AdvanceStringIndex('abc', nonInt); },
+				TypeError,
+				'"index" argument must be an integer, ' + debug(nonInt) + ' is not.'
+			);
+		});
+
+		forEach(v.nonBooleans, function (nonBoolean) {
+			t['throws'](
+				function () { ES.AdvanceStringIndex('abc', 0, nonBoolean); },
+				TypeError,
+				debug(nonBoolean) + ' is not a Boolean'
+			);
+		});
+
+		var str = 'a' + wholePoo + 'c';
+
+		t.test('non-unicode mode', function (st) {
+			for (var i = 0; i < str.length + 2; i += 1) {
+				st.equal(ES.AdvanceStringIndex(str, i, false), i + 1, i + ' advances to ' + (i + 1));
+			}
+
+			st.end();
+		});
+
+		t.test('unicode mode', function (st) {
+			st.equal(ES.AdvanceStringIndex(str, 0, true), 1, '0 advances to 1');
+			st.equal(ES.AdvanceStringIndex(str, 1, true), 3, '1 advances to 3');
+			st.equal(ES.AdvanceStringIndex(str, 2, true), 3, '2 advances to 3');
+			st.equal(ES.AdvanceStringIndex(str, 3, true), 4, '3 advances to 4');
+			st.equal(ES.AdvanceStringIndex(str, 4, true), 5, '4 advances to 5');
+
+			st.end();
+		});
+
+		t.test('lone surrogates', function (st) {
+			var halfPoo = 'a' + leadingPoo + 'c';
+
+			st.equal(ES.AdvanceStringIndex(halfPoo, 0, true), 1, '0 advances to 1');
+			st.equal(ES.AdvanceStringIndex(halfPoo, 1, true), 2, '1 advances to 2');
+			st.equal(ES.AdvanceStringIndex(halfPoo, 2, true), 3, '2 advances to 3');
+			st.equal(ES.AdvanceStringIndex(halfPoo, 3, true), 4, '3 advances to 4');
+
+			st.end();
+		});
+
+		t.test('surrogate pairs', function (st) {
+			var lowestPair = String.fromCharCode('0xD800') + String.fromCharCode('0xDC00');
+			var highestPair = String.fromCharCode('0xDBFF') + String.fromCharCode('0xDFFF');
+
+			st.equal(ES.AdvanceStringIndex(lowestPair, 0, true), 2, 'lowest surrogate pair, 0 -> 2');
+			st.equal(ES.AdvanceStringIndex(highestPair, 0, true), 2, 'highest surrogate pair, 0 -> 2');
+			st.equal(ES.AdvanceStringIndex(wholePoo, 0, true), 2, 'poop, 0 -> 2');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('CreateMethodProperty', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.CreateMethodProperty(primitive, 'key'); },
+				TypeError,
+				'O must be an Object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.CreateMethodProperty({}, nonPropertyKey); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.test('defines correctly', function (st) {
+			var obj = {};
+			var key = 'the key';
+			var value = { foo: 'bar' };
+
+			st.equal(ES.CreateMethodProperty(obj, key, value), true, 'defines property successfully');
+			st.test('property descriptor', { skip: !getOwnPropertyDescriptor }, function (s2t) {
+				s2t.deepEqual(
+					getOwnPropertyDescriptor(obj, key),
+					{
+						configurable: true,
+						enumerable: false,
+						value: value,
+						writable: true
+					},
+					'sets the correct property descriptor'
+				);
+
+				s2t.end();
+			});
+			st.equal(obj[key], value, 'sets the correct value');
+
+			st.end();
+		});
+
+		t.test('fails as expected on a frozen object', { skip: !Object.freeze }, function (st) {
+			var obj = Object.freeze({ foo: 'bar' });
+			st['throws'](
+				function () { ES.CreateMethodProperty(obj, 'foo', { value: 'baz' }); },
+				TypeError,
+				'nonconfigurable key can not be defined'
+			);
+
+			st.end();
+		});
+
+		t.test('fails as expected on a function with a nonconfigurable name', { skip: !functionsHaveNames || functionsHaveConfigurableNames }, function (st) {
+			st['throws'](
+				function () { ES.CreateMethodProperty(function () {}, 'name', { value: 'baz' }); },
+				TypeError,
+				'nonconfigurable function name can not be defined'
+			);
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('DefinePropertyOrThrow', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.DefinePropertyOrThrow(primitive, 'key', {}); },
+				TypeError,
+				'O must be an Object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.DefinePropertyOrThrow({}, nonPropertyKey, {}); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.test('defines correctly', function (st) {
+			var obj = {};
+			var key = 'the key';
+			var descriptor = {
+				configurable: true,
+				enumerable: false,
+				value: { foo: 'bar' },
+				writable: true
+			};
+
+			st.equal(ES.DefinePropertyOrThrow(obj, key, descriptor), true, 'defines property successfully');
+			st.test('property descriptor', { skip: !getOwnPropertyDescriptor }, function (s2t) {
+				s2t.deepEqual(
+					getOwnPropertyDescriptor(obj, key),
+					descriptor,
+					'sets the correct property descriptor'
+				);
+
+				s2t.end();
+			});
+			st.deepEqual(obj[key], descriptor.value, 'sets the correct value');
+
+			st.end();
+		});
+
+		t.test('fails as expected on a frozen object', { skip: !Object.freeze }, function (st) {
+			var obj = Object.freeze({ foo: 'bar' });
+			st['throws'](
+				function () {
+					ES.DefinePropertyOrThrow(obj, 'foo', { configurable: true, value: 'baz' });
+				},
+				TypeError,
+				'nonconfigurable key can not be defined'
+			);
+
+			st.end();
+		});
+
+		t.test('fails as expected on a function with a nonconfigurable name', { skip: !functionsHaveNames || functionsHaveConfigurableNames }, function (st) {
+			st['throws'](
+				function () {
+					ES.DefinePropertyOrThrow(function () {}, 'name', { configurable: true, value: 'baz' });
+				},
+				TypeError,
+				'nonconfigurable function name can not be defined'
+			);
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('DeletePropertyOrThrow', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.DeletePropertyOrThrow(primitive, 'key', {}); },
+				TypeError,
+				'O must be an Object'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.DeletePropertyOrThrow({}, nonPropertyKey, {}); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.test('defines correctly', function (st) {
+			var obj = { 'the key': 42 };
+			var key = 'the key';
+
+			st.equal(ES.DeletePropertyOrThrow(obj, key), true, 'deletes property successfully');
+			st.equal(key in obj, false, 'key is no longer in the object');
+
+			st.end();
+		});
+
+		t.test('fails as expected on a frozen object', { skip: !Object.freeze }, function (st) {
+			var obj = Object.freeze({ foo: 'bar' });
+			st['throws'](
+				function () { ES.DeletePropertyOrThrow(obj, 'foo'); },
+				TypeError,
+				'nonconfigurable key can not be deleted'
+			);
+
+			st.end();
+		});
+
+		t.test('fails as expected on a function with a nonconfigurable name', { skip: !functionsHaveNames || functionsHaveConfigurableNames }, function (st) {
+			st['throws'](
+				function () { ES.DeletePropertyOrThrow(function () {}, 'name'); },
+				TypeError,
+				'nonconfigurable function name can not be deleted'
+			);
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('EnumerableOwnNames', { skip: skips && skips.EnumerableOwnNames }, function (t) {
+		var obj = testEnumerableOwnNames(t, function (O) { return ES.EnumerableOwnNames(O); });
+
+		t.deepEqual(
+			ES.EnumerableOwnNames(obj),
+			['own'],
+			'returns enumerable own names'
+		);
+
+		t.end();
+	});
+
+	test('thisNumberValue', function (t) {
+		forEach(v.nonNumbers, function (nonNumber) {
+			t['throws'](
+				function () { ES.thisNumberValue(nonNumber); },
+				TypeError,
+				debug(nonNumber) + ' is not a Number'
+			);
+		});
+
+		forEach(v.numbers, function (number) {
+			t.equal(ES.thisNumberValue(number), number, debug(number) + ' is its own thisNumberValue');
+			var obj = Object(number);
+			t.equal(ES.thisNumberValue(obj), number, debug(obj) + ' is the boxed thisNumberValue');
+		});
+
+		t.end();
+	});
+
+	test('thisBooleanValue', function (t) {
+		forEach(v.nonBooleans, function (nonBoolean) {
+			t['throws'](
+				function () { ES.thisBooleanValue(nonBoolean); },
+				TypeError,
+				debug(nonBoolean) + ' is not a Boolean'
+			);
+		});
+
+		forEach(v.booleans, function (boolean) {
+			t.equal(ES.thisBooleanValue(boolean), boolean, debug(boolean) + ' is its own thisBooleanValue');
+			var obj = Object(boolean);
+			t.equal(ES.thisBooleanValue(obj), boolean, debug(obj) + ' is the boxed thisBooleanValue');
+		});
+
+		t.end();
+	});
+
+	test('thisStringValue', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.thisStringValue(nonString); },
+				TypeError,
+				debug(nonString) + ' is not a String'
+			);
+		});
+
+		forEach(v.strings, function (string) {
+			t.equal(ES.thisStringValue(string), string, debug(string) + ' is its own thisStringValue');
+			var obj = Object(string);
+			t.equal(ES.thisStringValue(obj), string, debug(obj) + ' is the boxed thisStringValue');
+		});
+
+		t.end();
+	});
+
+	test('thisTimeValue', function (t) {
+		forEach(v.primitives.concat(v.objects), function (nonDate) {
+			t['throws'](
+				function () { ES.thisTimeValue(nonDate); },
+				TypeError,
+				debug(nonDate) + ' is not a Date'
+			);
+		});
+
+		forEach(v.timestamps, function (timestamp) {
+			var date = new Date(timestamp);
+
+			t.equal(ES.thisTimeValue(date), timestamp, debug(date) + ' is its own thisTimeValue');
+		});
+
+		t.end();
+	});
+
+	test('SetIntegrityLevel', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.SetIntegrityLevel(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		t['throws'](
+			function () { ES.SetIntegrityLevel({}); },
+			/^TypeError: Assertion failed: `level` must be `"sealed"` or `"frozen"`$/,
+			'`level` must be `"sealed"` or `"frozen"`'
+		);
+
+		var O = { a: 1 };
+		t.test('sealed', { skip: !Object.preventExtensions || noThrowOnStrictViolation }, function (st) {
+			st.equal(ES.SetIntegrityLevel(O, 'sealed'), true);
+			st['throws'](
+				function () { O.b = 2; },
+				/^TypeError: (Cannot|Can't) add property b, object is not extensible$/,
+				'sealing prevent new properties from being added'
+			);
+			O.a = 2;
+			st.equal(O.a, 2, 'pre-frozen, existing properties are mutable');
+			st.end();
+		});
+
+		t.test('frozen', { skip: !Object.freeze || noThrowOnStrictViolation }, function (st) {
+			st.equal(ES.SetIntegrityLevel(O, 'frozen'), true);
+			st['throws'](
+				function () { O.a = 3; },
+				/^TypeError: Cannot assign to read only property 'a' of /,
+				'freezing prevents existing properties from being mutated'
+			);
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('TestIntegrityLevel', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.TestIntegrityLevel(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		t['throws'](
+			function () { ES.TestIntegrityLevel({ a: 1 }); },
+			/^TypeError: Assertion failed: `level` must be `"sealed"` or `"frozen"`$/,
+			'`level` must be `"sealed"` or `"frozen"`'
+		);
+
+		t.equal(ES.TestIntegrityLevel({ a: 1 }, 'sealed'), false, 'basic object is not sealed');
+		t.equal(ES.TestIntegrityLevel({ a: 1 }, 'frozen'), false, 'basic object is not frozen');
+
+		t.test('preventExtensions', { skip: !Object.preventExtensions }, function (st) {
+			var o = Object.preventExtensions({ a: 1 });
+			st.equal(ES.TestIntegrityLevel(o, 'sealed'), false, 'nonextensible object is not sealed');
+			st.equal(ES.TestIntegrityLevel(o, 'frozen'), false, 'nonextensible object is not frozen');
+
+			var empty = Object.preventExtensions({});
+			st.equal(ES.TestIntegrityLevel(empty, 'sealed'), true, 'empty nonextensible object is sealed');
+			st.equal(ES.TestIntegrityLevel(empty, 'frozen'), true, 'empty nonextensible object is frozen');
+			st.end();
+		});
+
+		t.test('seal', { skip: !Object.seal }, function (st) {
+			var o = Object.seal({ a: 1 });
+			st.equal(ES.TestIntegrityLevel(o, 'sealed'), true, 'sealed object is sealed');
+			st.equal(ES.TestIntegrityLevel(o, 'frozen'), false, 'sealed object is not frozen');
+
+			var empty = Object.seal({});
+			st.equal(ES.TestIntegrityLevel(empty, 'sealed'), true, 'empty sealed object is sealed');
+			st.equal(ES.TestIntegrityLevel(empty, 'frozen'), true, 'empty sealed object is frozen');
+
+			st.end();
+		});
+
+		t.test('freeze', { skip: !Object.freeze }, function (st) {
+			var o = Object.freeze({ a: 1 });
+			st.equal(ES.TestIntegrityLevel(o, 'sealed'), true, 'frozen object is sealed');
+			st.equal(ES.TestIntegrityLevel(o, 'frozen'), true, 'frozen object is frozen');
+
+			var empty = Object.freeze({});
+			st.equal(ES.TestIntegrityLevel(empty, 'sealed'), true, 'empty frozen object is sealed');
+			st.equal(ES.TestIntegrityLevel(empty, 'frozen'), true, 'empty frozen object is frozen');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('OrdinaryHasInstance', function (t) {
+		forEach(v.nonFunctions, function (nonFunction) {
+			t.equal(ES.OrdinaryHasInstance(nonFunction, {}), false, debug(nonFunction) + ' is not callable');
+		});
+
+		forEach(v.primitives, function (primitive) {
+			t.equal(ES.OrdinaryHasInstance(function () {}, primitive), false, debug(primitive) + ' is not an object');
+		});
+
+		var C = function C() {};
+		var D = function D() {};
+		t.equal(ES.OrdinaryHasInstance(C, new C()), true, 'constructor function has an instance of itself');
+		t.equal(ES.OrdinaryHasInstance(C, new D()), false, 'constructor/instance mismatch is false');
+		t.equal(ES.OrdinaryHasInstance(D, new C()), false, 'instance/constructor mismatch is false');
+		t.equal(ES.OrdinaryHasInstance(C, {}), false, 'plain object is not an instance of a constructor');
+		t.equal(ES.OrdinaryHasInstance(Object, {}), true, 'plain object is an instance of Object');
+
+		t.end();
+	});
+
+	test('OrdinaryHasProperty', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.OrdinaryHasProperty(primitive, ''); },
+				TypeError,
+				debug(primitive) + ' is not an object'
+			);
+		});
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.OrdinaryHasProperty({}, nonPropertyKey); },
+				TypeError,
+				'P: ' + debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.equal(ES.OrdinaryHasProperty({ a: 1 }, 'a'), true, 'own property is true');
+		t.equal(ES.OrdinaryHasProperty({}, 'toString'), true, 'inherited property is true');
+		t.equal(ES.OrdinaryHasProperty({}, 'nope'), false, 'absent property is false');
+
+		t.end();
+	});
+
+	test('InstanceofOperator', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.InstanceofOperator(primitive, function () {}); },
+				TypeError,
+				debug(primitive) + ' is not an object'
+			);
+		});
+
+		forEach(v.nonFunctions, function (nonFunction) {
+			t['throws'](
+				function () { ES.InstanceofOperator({}, nonFunction); },
+				TypeError,
+				debug(nonFunction) + ' is not callable'
+			);
+		});
+
+		var C = function C() {};
+		var D = function D() {};
+
+		t.equal(ES.InstanceofOperator(new C(), C), true, 'constructor function has an instance of itself');
+		t.equal(ES.InstanceofOperator(new D(), C), false, 'constructor/instance mismatch is false');
+		t.equal(ES.InstanceofOperator(new C(), D), false, 'instance/constructor mismatch is false');
+		t.equal(ES.InstanceofOperator({}, C), false, 'plain object is not an instance of a constructor');
+		t.equal(ES.InstanceofOperator({}, Object), true, 'plain object is an instance of Object');
+
+		t.test('Symbol.hasInstance', { skip: !v.hasSymbols || !Symbol.hasInstance }, function (st) {
+			st.plan(4);
+
+			var O = {};
+			var C2 = function () {};
+			st.equal(ES.InstanceofOperator(O, C2), false, 'O is not an instance of C2');
+
+			defineProperty(C2, Symbol.hasInstance, {
+				value: function (obj) {
+					st.equal(this, C2, 'hasInstance receiver is C2');
+					st.equal(obj, O, 'hasInstance argument is O');
+
+					return {}; // testing coercion to boolean
+				}
+			});
+
+			st.equal(ES.InstanceofOperator(O, C2), true, 'O is now an instance of C2');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('Abstract Equality Comparison', function (t) {
+		t.test('same types use ===', function (st) {
+			forEach(v.primitives.concat(v.objects), function (value) {
+				st.equal(ES['Abstract Equality Comparison'](value, value), value === value, debug(value) + ' is abstractly equal to itself');
+			});
+			st.end();
+		});
+
+		t.test('different types coerce', function (st) {
+			var pairs = [
+				[null, undefined],
+				[3, '3'],
+				[true, '3'],
+				[true, 3],
+				[false, 0],
+				[false, '0'],
+				[3, [3]],
+				['3', [3]],
+				[true, [1]],
+				[false, [0]],
+				[String(v.coercibleObject), v.coercibleObject],
+				[Number(String(v.coercibleObject)), v.coercibleObject],
+				[Number(v.coercibleObject), v.coercibleObject],
+				[String(Number(v.coercibleObject)), v.coercibleObject]
+			];
+			forEach(pairs, function (pair) {
+				var a = pair[0];
+				var b = pair[1];
+				// eslint-disable-next-line eqeqeq
+				st.equal(ES['Abstract Equality Comparison'](a, b), a == b, debug(a) + ' == ' + debug(b));
+				// eslint-disable-next-line eqeqeq
+				st.equal(ES['Abstract Equality Comparison'](b, a), b == a, debug(b) + ' == ' + debug(a));
+			});
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('Strict Equality Comparison', function (t) {
+		t.test('same types use ===', function (st) {
+			forEach(v.primitives.concat(v.objects), function (value) {
+				st.equal(ES['Strict Equality Comparison'](value, value), value === value, debug(value) + ' is strictly equal to itself');
+			});
+			st.end();
+		});
+
+		t.test('different types are not ===', function (st) {
+			var pairs = [
+				[null, undefined],
+				[3, '3'],
+				[true, '3'],
+				[true, 3],
+				[false, 0],
+				[false, '0'],
+				[3, [3]],
+				['3', [3]],
+				[true, [1]],
+				[false, [0]],
+				[String(v.coercibleObject), v.coercibleObject],
+				[Number(String(v.coercibleObject)), v.coercibleObject],
+				[Number(v.coercibleObject), v.coercibleObject],
+				[String(Number(v.coercibleObject)), v.coercibleObject]
+			];
+			forEach(pairs, function (pair) {
+				var a = pair[0];
+				var b = pair[1];
+				st.equal(ES['Strict Equality Comparison'](a, b), a === b, debug(a) + ' === ' + debug(b));
+				st.equal(ES['Strict Equality Comparison'](b, a), b === a, debug(b) + ' === ' + debug(a));
+			});
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('Abstract Relational Comparison', function (t) {
+		t.test('at least one operand is NaN', function (st) {
+			st.equal(ES['Abstract Relational Comparison'](NaN, {}, true), undefined, 'LeftFirst: first is NaN, returns undefined');
+			st.equal(ES['Abstract Relational Comparison']({}, NaN, true), undefined, 'LeftFirst: second is NaN, returns undefined');
+			st.equal(ES['Abstract Relational Comparison'](NaN, {}, false), undefined, '!LeftFirst: first is NaN, returns undefined');
+			st.equal(ES['Abstract Relational Comparison']({}, NaN, false), undefined, '!LeftFirst: second is NaN, returns undefined');
+			st.end();
+		});
+
+		t.equal(ES['Abstract Relational Comparison'](3, 4, true), true, 'LeftFirst: 3 is less than 4');
+		t.equal(ES['Abstract Relational Comparison'](4, 3, true), false, 'LeftFirst: 3 is not less than 4');
+		t.equal(ES['Abstract Relational Comparison'](3, 4, false), true, '!LeftFirst: 3 is less than 4');
+		t.equal(ES['Abstract Relational Comparison'](4, 3, false), false, '!LeftFirst: 3 is not less than 4');
+
+		t.equal(ES['Abstract Relational Comparison']('3', '4', true), true, 'LeftFirst: "3" is less than "4"');
+		t.equal(ES['Abstract Relational Comparison']('4', '3', true), false, 'LeftFirst: "3" is not less than "4"');
+		t.equal(ES['Abstract Relational Comparison']('3', '4', false), true, '!LeftFirst: "3" is less than "4"');
+		t.equal(ES['Abstract Relational Comparison']('4', '3', false), false, '!LeftFirst: "3" is not less than "4"');
+
+		t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, 42, true), true, 'LeftFirst: coercible object is less than 42');
+		t.equal(ES['Abstract Relational Comparison'](42, v.coercibleObject, true), false, 'LeftFirst: 42 is not less than coercible object');
+		t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, 42, false), true, '!LeftFirst: coercible object is less than 42');
+		t.equal(ES['Abstract Relational Comparison'](42, v.coercibleObject, false), false, '!LeftFirst: 42 is not less than coercible object');
+
+		t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, '3', true), false, 'LeftFirst: coercible object is not less than "3"');
+		t.equal(ES['Abstract Relational Comparison']('3', v.coercibleObject, true), false, 'LeftFirst: "3" is not less than coercible object');
+		t.equal(ES['Abstract Relational Comparison'](v.coercibleObject, '3', false), false, '!LeftFirst: coercible object is not less than "3"');
+		t.equal(ES['Abstract Relational Comparison']('3', v.coercibleObject, false), false, '!LeftFirst: "3" is not less than coercible object');
+
+		t.end();
+	});
+
+	test('ValidateAndApplyPropertyDescriptor', function (t) {
+		forEach(v.nonUndefinedPrimitives, function (nonUndefinedPrimitive) {
+			t['throws'](
+				function () { ES.ValidateAndApplyPropertyDescriptor(nonUndefinedPrimitive, '', false, v.genericDescriptor(), v.genericDescriptor()); },
+				TypeError,
+				'O: ' + debug(nonUndefinedPrimitive) + ' is not undefined or an Object'
+			);
+		});
+
+		forEach(v.nonBooleans, function (nonBoolean) {
+			t['throws'](
+				function () {
+					return ES.ValidateAndApplyPropertyDescriptor(
+						undefined,
+						null,
+						nonBoolean,
+						v.genericDescriptor(),
+						v.genericDescriptor()
+					);
+				},
+				TypeError,
+				'extensible: ' + debug(nonBoolean) + ' is not a Boolean'
+			);
+		});
+
+		forEach(v.primitives, function (primitive) {
+			// Desc must be a Property Descriptor
+			t['throws'](
+				function () {
+					return ES.ValidateAndApplyPropertyDescriptor(
+						undefined,
+						null,
+						false,
+						primitive,
+						v.genericDescriptor()
+					);
+				},
+				TypeError,
+				'Desc: ' + debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			// current must be undefined or a Property Descriptor
+			t['throws'](
+				function () {
+					return ES.ValidateAndApplyPropertyDescriptor(
+						undefined,
+						null,
+						false,
+						v.genericDescriptor(),
+						primitive
+					);
+				},
+				TypeError,
+				'current: ' + debug(primitive) + ' is not a Property Descriptor or undefined'
+			);
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			// if O is an object, P must be a property key
+			t['throws'](
+				function () {
+					return ES.ValidateAndApplyPropertyDescriptor(
+						{},
+						nonPropertyKey,
+						false,
+						v.genericDescriptor(),
+						v.genericDescriptor()
+					);
+				},
+				TypeError,
+				'P: ' + debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.test('current is undefined', function (st) {
+			var propertyKey = 'howdy';
+
+			st.test('generic descriptor', function (s2t) {
+				var generic = v.genericDescriptor();
+				generic['[[Enumerable]]'] = true;
+				var O = {};
+				ES.ValidateAndApplyPropertyDescriptor(undefined, propertyKey, true, generic);
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(O, propertyKey, false, generic),
+					false,
+					'when extensible is false, nothing happens'
+				);
+				s2t.deepEqual(O, {}, 'no changes applied when O is undefined or extensible is false');
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(O, propertyKey, true, generic),
+					true,
+					'operation is successful'
+				);
+				var expected = {};
+				expected[propertyKey] = undefined;
+				s2t.deepEqual(O, expected, 'generic descriptor has been defined as an own data property');
+				s2t.end();
+			});
+
+			st.test('data descriptor', function (s2t) {
+				var data = v.dataDescriptor();
+				data['[[Enumerable]]'] = true;
+
+				var O = {};
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(undefined, propertyKey, true, data),
+					true,
+					'noop when O is undefined'
+				);
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(O, propertyKey, false, data),
+					false,
+					'when extensible is false, nothing happens'
+				);
+				s2t.deepEqual(O, {}, 'no changes applied when O is undefined or extensible is false');
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(O, propertyKey, true, data),
+					true,
+					'operation is successful'
+				);
+				var expected = {};
+				expected[propertyKey] = data['[[Value]]'];
+				s2t.deepEqual(O, expected, 'data descriptor has been defined as an own data property');
+				s2t.end();
+			});
+
+			st.test('accessor descriptor', { skip: !defineProperty.oDP }, function (s2t) {
+				var count = 0;
+				var accessor = v.accessorDescriptor();
+				accessor['[[Enumerable]]'] = true;
+				accessor['[[Get]]'] = function () {
+					count += 1;
+					return count;
+				};
+
+				var O = {};
+				ES.ValidateAndApplyPropertyDescriptor(undefined, propertyKey, true, accessor);
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(O, propertyKey, false, accessor),
+					false,
+					'when extensible is false, nothing happens'
+				);
+				s2t.deepEqual(O, {}, 'no changes applied when O is undefined or extensible is false');
+				s2t.equal(
+					ES.ValidateAndApplyPropertyDescriptor(O, propertyKey, true, accessor),
+					true,
+					'operation is successful'
+				);
+				var expected = {};
+				expected[propertyKey] = accessor['[[Get]]']() + 1;
+				s2t.deepEqual(O, expected, 'accessor descriptor has been defined as an own accessor property');
+				s2t.end();
+			});
+
+			st.end();
+		});
+
+		t.test('every field in Desc is absent', { skip: 'it is unclear if having no fields qualifies Desc to be a Property Descriptor' });
+
+		forEach([v.dataDescriptor, v.accessorDescriptor, v.mutatorDescriptor], function (getDescriptor) {
+			t.equal(
+				ES.ValidateAndApplyPropertyDescriptor(undefined, 'property key', true, getDescriptor(), getDescriptor()),
+				true,
+				'when Desc and current are the same, early return true'
+			);
+		});
+
+		t.test('current is nonconfigurable', function (st) {
+			// note: these must not be generic descriptors, or else the algorithm returns an early true
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.configurable(v.dataDescriptor()),
+					v.descriptors.nonConfigurable(v.dataDescriptor())
+				),
+				false,
+				'false if Desc is configurable'
+			);
+
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.enumerable(v.dataDescriptor()),
+					v.descriptors.nonEnumerable(v.dataDescriptor())
+				),
+				false,
+				'false if Desc is Enumerable and current is not'
+			);
+
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.nonEnumerable(v.dataDescriptor()),
+					v.descriptors.enumerable(v.dataDescriptor())
+				),
+				false,
+				'false if Desc is not Enumerable and current is'
+			);
+
+			var descLackingEnumerable = v.accessorDescriptor();
+			delete descLackingEnumerable['[[Enumerable]]'];
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					descLackingEnumerable,
+					v.descriptors.enumerable(v.accessorDescriptor())
+				),
+				true,
+				'not false if Desc lacks Enumerable'
+			);
+
+			st.end();
+		});
+
+		t.test('Desc and current: one is a data descriptor, one is not', { skip: !defineProperty || !getOwnPropertyDescriptor }, function (st) {
+			// note: Desc must be configurable if current is nonconfigurable, to hit this branch
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.configurable(v.accessorDescriptor()),
+					v.descriptors.nonConfigurable(v.dataDescriptor())
+				),
+				false,
+				'false if current (data) is nonconfigurable'
+			);
+
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.configurable(v.dataDescriptor()),
+					v.descriptors.nonConfigurable(v.accessorDescriptor())
+				),
+				false,
+				'false if current (not data) is nonconfigurable'
+			);
+
+			// one is data and one is not,
+			//	// if current is data, convert to accessor
+			//	// else convert to data
+
+			var startsWithData = {
+				'property key': 42
+			};
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					startsWithData,
+					'property key',
+					true,
+					v.descriptors.enumerable(v.descriptors.configurable(v.accessorDescriptor())),
+					v.descriptors.enumerable(v.descriptors.configurable(v.dataDescriptor()))
+				),
+				true,
+				'operation is successful: current is data, Desc is accessor'
+			);
+			var shouldBeAccessor = getOwnPropertyDescriptor(startsWithData, 'property key');
+			st.equal(typeof shouldBeAccessor.get, 'function', 'has a getter');
+
+			var key = 'property key';
+			var startsWithAccessor = {};
+			defineProperty(startsWithAccessor, key, {
+				configurable: true,
+				enumerable: true,
+				get: function get() { return 42; }
+			});
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					startsWithAccessor,
+					key,
+					true,
+					v.descriptors.enumerable(v.descriptors.configurable(v.dataDescriptor())),
+					v.descriptors.enumerable(v.descriptors.configurable(v.accessorDescriptor(42)))
+				),
+				true,
+				'operation is successful: current is accessor, Desc is data'
+			);
+			var shouldBeData = getOwnPropertyDescriptor(startsWithAccessor, 'property key');
+			st.deepEqual(shouldBeData, { configurable: true, enumerable: true, value: 42, writable: false }, 'is a data property');
+
+			st.end();
+		});
+
+		t.test('Desc and current are both data descriptors', function (st) {
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.writable(v.dataDescriptor()),
+					v.descriptors.nonWritable(v.descriptors.nonConfigurable(v.dataDescriptor()))
+				),
+				false,
+				'false if frozen current and writable Desc'
+			);
+
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.descriptors.configurable({ '[[Value]]': 42 }),
+					v.descriptors.nonWritable({ '[[Value]]': 7 })
+				),
+				false,
+				'false if nonwritable current has a different value than Desc'
+			);
+
+			st.end();
+		});
+
+		t.test('current is nonconfigurable; Desc and current are both accessor descriptors', function (st) {
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.mutatorDescriptor(),
+					v.descriptors.nonConfigurable(v.mutatorDescriptor())
+				),
+				false,
+				'false if both Sets are not equal'
+			);
+
+			st.equal(
+				ES.ValidateAndApplyPropertyDescriptor(
+					undefined,
+					'property key',
+					true,
+					v.accessorDescriptor(),
+					v.descriptors.nonConfigurable(v.accessorDescriptor())
+				),
+				false,
+				'false if both Gets are not equal'
+			);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('OrdinaryGetOwnProperty', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.OrdinaryGetOwnProperty(primitive, ''); },
+				TypeError,
+				'O: ' + debug(primitive) + ' is not an Object'
+			);
+		});
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.OrdinaryGetOwnProperty({}, nonPropertyKey); },
+				TypeError,
+				'P: ' + debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.equal(ES.OrdinaryGetOwnProperty({}, 'not in the object'), undefined, 'missing property yields undefined');
+		t.equal(ES.OrdinaryGetOwnProperty({}, 'toString'), undefined, 'inherited non-own property yields undefined');
+
+		t.deepEqual(
+			ES.OrdinaryGetOwnProperty({ a: 1 }, 'a'),
+			ES.ToPropertyDescriptor({
+				configurable: true,
+				enumerable: true,
+				value: 1,
+				writable: true
+			}),
+			'own assigned data property yields expected descriptor'
+		);
+
+		t.deepEqual(
+			ES.OrdinaryGetOwnProperty(/a/, 'lastIndex'),
+			ES.ToPropertyDescriptor({
+				configurable: false,
+				enumerable: false,
+				value: 0,
+				writable: true
+			}),
+			'regex lastIndex yields expected descriptor'
+		);
+
+		t.deepEqual(
+			ES.OrdinaryGetOwnProperty([], 'length'),
+			ES.ToPropertyDescriptor({
+				configurable: false,
+				enumerable: false,
+				value: 0,
+				writable: true
+			}),
+			'array length yields expected descriptor'
+		);
+
+		if (!Object.isFrozen || !Object.isFrozen(Object.prototype)) {
+			t.deepEqual(
+				ES.OrdinaryGetOwnProperty(Object.prototype, 'toString'),
+				ES.ToPropertyDescriptor({
+					configurable: true,
+					enumerable: false,
+					value: Object.prototype.toString,
+					writable: true
+				}),
+				'own non-enumerable data property yields expected descriptor'
+			);
+		}
+
+		t.test('ES5+', { skip: !defineProperty.oDP }, function (st) {
+			var O = {};
+			defineProperty(O, 'foo', {
+				configurable: false,
+				enumerable: false,
+				value: O,
+				writable: true
+			});
+
+			st.deepEqual(
+				ES.OrdinaryGetOwnProperty(O, 'foo'),
+				ES.ToPropertyDescriptor({
+					configurable: false,
+					enumerable: false,
+					value: O,
+					writable: true
+				}),
+				'defined own property yields expected descriptor'
+			);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('OrdinaryDefineOwnProperty', { skip: !getOwnPropertyDescriptor }, function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.CopyDataProperties(primitive, {}, []); },
+				TypeError,
+				'O: ' + debug(primitive) + ' is not an Object'
+			);
+		});
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.OrdinaryDefineOwnProperty({}, nonPropertyKey, v.genericDescriptor()); },
+				TypeError,
+				'P: ' + debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.OrdinaryDefineOwnProperty(primitive, '', v.genericDescriptor()); },
+				TypeError,
+				'Desc: ' + debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		var O = {};
+		var P = 'property key';
+		var Desc = v.accessorDescriptor();
+		t.equal(
+			ES.OrdinaryDefineOwnProperty(O, P, Desc),
+			true,
+			'operation is successful'
+		);
+		t.deepEqual(
+			getOwnPropertyDescriptor(O, P),
+			ES.FromPropertyDescriptor(ES.CompletePropertyDescriptor(Desc)),
+			'expected property descriptor is defined'
+		);
+
+		t.end();
+	});
+
+	test('ArrayCreate', function (t) {
+		forEach(v.nonIntegerNumbers.concat([-1]), function (nonIntegerNumber) {
+			t['throws'](
+				function () { ES.ArrayCreate(nonIntegerNumber); },
+				TypeError,
+				'length must be an integer number >= 0'
+			);
+		});
+
+		t['throws'](
+			function () { ES.ArrayCreate(Math.pow(2, 32)); },
+			RangeError,
+			'length must be < 2**32'
+		);
+
+		t.deepEqual(ES.ArrayCreate(-0), [], 'length of -0 creates an empty array');
+		t.deepEqual(ES.ArrayCreate(0), [], 'length of +0 creates an empty array');
+		// eslint-disable-next-line no-sparse-arrays, comma-spacing
+		t.deepEqual(ES.ArrayCreate(1), [,], 'length of 1 creates a sparse array of length 1');
+		// eslint-disable-next-line no-sparse-arrays, comma-spacing
+		t.deepEqual(ES.ArrayCreate(2), [,,], 'length of 2 creates a sparse array of length 2');
+
+		t.test('proto argument', { skip: !$setProto }, function (st) {
+			var fakeProto = {
+				push: { toString: function () { return 'not array push'; } }
+			};
+			st.equal(ES.ArrayCreate(0, fakeProto).push, fakeProto.push, 'passing the proto argument works');
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('ArraySetLength', function (t) {
+		forEach(v.primitives.concat(v.objects), function (nonArray) {
+			t['throws'](
+				function () { ES.ArraySetLength(nonArray, 0); },
+				TypeError,
+				'A: ' + debug(nonArray) + ' is not an Array'
+			);
+		});
+
+		forEach(v.nonUndefinedPrimitives, function (primitive) {
+			t['throws'](
+				function () { ES.ArraySetLength([], primitive); },
+				TypeError,
+				'Desc: ' + debug(primitive) + ' is not a Property Descriptor'
+			);
+		});
+
+		t.test('making length nonwritable', { skip: !getOwnPropertyDescriptor }, function (st) {
+			var a = [];
+			ES.ArraySetLength(a, { '[[Writable]]': false });
+			st.deepEqual(
+				getOwnPropertyDescriptor(a, 'length'),
+				{
+					configurable: false,
+					enumerable: false,
+					value: 0,
+					writable: false
+				},
+				'without a value, length becomes nonwritable'
+			);
+			st.end();
+		});
+
+		var arr = [];
+		ES.ArraySetLength(arr, { '[[Value]]': 7 });
+		t.equal(arr.length, 7, 'array now has a length of 7');
+
+		t.end();
+	});
+
+	test('CreateHTML', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.CreateHTML('', nonString, '', ''); },
+				TypeError,
+				'tag: ' + debug(nonString) + ' is not a String'
+			);
+			t['throws'](
+				function () { ES.CreateHTML('', '', nonString, ''); },
+				TypeError,
+				'attribute: ' + debug(nonString) + ' is not a String'
+			);
+		});
+
+		t.equal(
+			ES.CreateHTML(
+				{ toString: function () { return 'the string'; } },
+				'some HTML tag!',
+				''
+			),
+			'<some HTML tag!>the string</some HTML tag!>',
+			'works with an empty string attribute value'
+		);
+
+		t.equal(
+			ES.CreateHTML(
+				{ toString: function () { return 'the string'; } },
+				'some HTML tag!',
+				'attr',
+				'value "with quotes"'
+			),
+			'<some HTML tag! attr="value &quot;with quotes&quot;">the string</some HTML tag!>',
+			'works with an attribute, and a value with quotes'
+		);
+
+		t.end();
+	});
+
+	test('GetOwnPropertyKeys', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.GetOwnPropertyKeys(primitive, 'String'); },
+				TypeError,
+				'O: ' + debug(primitive) + ' is not an Object'
+			);
+		});
+
+		t['throws'](
+			function () { ES.GetOwnPropertyKeys({}, 'not string or symbol'); },
+			TypeError,
+			'Type: must be "String" or "Symbol"'
+		);
+
+		t.test('Symbols', { skip: !v.hasSymbols }, function (st) {
+			var O = { a: 1 };
+			O[Symbol.iterator] = true;
+			var s = Symbol('test');
+			defineProperty(O, s, { enumerable: false, value: true });
+
+			st.deepEqual(
+				ES.GetOwnPropertyKeys(O, 'Symbol'),
+				[Symbol.iterator, s],
+				'works with Symbols, enumerable or not'
+			);
+
+			st.end();
+		});
+
+		t.test('non-enumerable names', { skip: !defineProperty.oDP }, function (st) {
+			var O = { a: 1 };
+			defineProperty(O, 'b', { enumerable: false, value: 2 });
+			if (v.hasSymbols) {
+				O[Symbol.iterator] = true;
+			}
+
+			st.deepEqual(
+				ES.GetOwnPropertyKeys(O, 'String').sort(),
+				['a', 'b'].sort(),
+				'works with Strings, enumerable or not'
+			);
+
+			st.end();
+		});
+
+		t.deepEqual(
+			ES.GetOwnPropertyKeys({ a: 1, b: 2 }, 'String').sort(),
+			['a', 'b'].sort(),
+			'works with enumerable keys'
+		);
+
+		t.end();
+	});
+
+	test('SymbolDescriptiveString', function (t) {
+		forEach(v.nonSymbolPrimitives.concat(v.objects), function (nonSymbol) {
+			t['throws'](
+				function () { ES.SymbolDescriptiveString(nonSymbol); },
+				TypeError,
+				debug(nonSymbol) + ' is not a Symbol'
+			);
+		});
+
+		t.test('Symbols', { skip: !v.hasSymbols }, function (st) {
+			st.equal(ES.SymbolDescriptiveString(Symbol()), 'Symbol()', 'undefined description');
+			st.equal(ES.SymbolDescriptiveString(Symbol('')), 'Symbol()', 'empty string description');
+			st.equal(ES.SymbolDescriptiveString(Symbol.iterator), 'Symbol(Symbol.iterator)', 'well-known symbol');
+			st.equal(ES.SymbolDescriptiveString(Symbol('foo')), 'Symbol(foo)', 'string description');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('GetSubstitution', { skip: skips && skips.GetSubstitution }, function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.GetSubstitution(nonString, '', 0, [], ''); },
+				TypeError,
+				'`matched`: ' + debug(nonString) + ' is not a String'
+			);
+
+			t['throws'](
+				function () { ES.GetSubstitution('', nonString, 0, [], ''); },
+				TypeError,
+				'`str`: ' + debug(nonString) + ' is not a String'
+			);
+
+			t['throws'](
+				function () { ES.GetSubstitution('', '', 0, [], nonString); },
+				TypeError,
+				'`replacement`: ' + debug(nonString) + ' is not a String'
+			);
+
+			if (canDistinguishSparseFromUndefined || typeof nonString !== 'undefined') {
+				t['throws'](
+					function () { ES.GetSubstitution('', '', 0, [nonString], ''); },
+					TypeError,
+					'`captures`: ' + debug([nonString]) + ' is not an Array of strings'
+				);
+			}
+		});
+
+		forEach(v.nonIntegerNumbers.concat([-1, -42, -Infinity]), function (nonNonNegativeInteger) {
+			t['throws'](
+				function () { ES.GetSubstitution('', '', nonNonNegativeInteger, [], ''); },
+				TypeError,
+				'`position`: ' + debug(nonNonNegativeInteger) + ' is not a non-negative integer'
+			);
+		});
+
+		forEach(v.nonArrays, function (nonArray) {
+			t['throws'](
+				function () { ES.GetSubstitution('', '', 0, nonArray, ''); },
+				TypeError,
+				'`captures`: ' + debug(nonArray) + ' is not an Array'
+			);
+		});
+
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 3, [], '123'),
+			'123',
+			'returns the substitution'
+		);
+		t.equal(
+			ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '$$2$'),
+			'$2$',
+			'supports $$, and trailing $'
+		);
+
+		t.equal(
+			ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '>$&<'),
+			'>abcdef<',
+			'supports $&'
+		);
+
+		t.equal(
+			ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '>$`<'),
+			'><',
+			'supports $` at position 0'
+		);
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 3, [], '>$`<'),
+			'>ab<',
+			'supports $` at position > 0'
+		);
+
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 7, [], ">$'<"),
+			'><',
+			"supports $' at a position where there's less than `matched.length` chars left"
+		);
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 3, [], ">$'<"),
+			'>ghi<',
+			"supports $' at a position where there's more than `matched.length` chars left"
+		);
+
+		for (var i = 0; i < 100; i += 1) {
+			var captures = [];
+			captures[i] = 'test';
+			if (i > 0) {
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '>$' + i + '<'),
+					'>undefined<',
+					'supports $' + i + ' with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '>$' + i),
+					'>undefined',
+					'supports $' + i + ' at the end of the replacement, with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, '>$' + i + '<'),
+					'><',
+					'supports $' + i + ' with a capture at that index'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, '>$' + i),
+					'>',
+					'supports $' + i + ' at the end of the replacement, with a capture at that index'
+				);
+			}
+			if (i < 10) {
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '>$0' + i + '<'),
+					i === 0 ? '><' : '>undefined<',
+					'supports $0' + i + ' with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], '>$0' + i),
+					i === 0 ? '>' : '>undefined',
+					'supports $0' + i + ' at the end of the replacement, with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, '>$0' + i + '<'),
+					'><',
+					'supports $0' + i + ' with a capture at that index'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, '>$0' + i),
+					'>',
+					'supports $0' + i + ' at the end of the replacement, with a capture at that index'
+				);
+			}
+		}
+
+		t.end();
+	});
+
+	test('SecFromTime', function (t) {
+		var now = new Date();
+		t.equal(ES.SecFromTime(now.getTime()), now.getUTCSeconds(), 'second from Date timestamp matches getUTCSeconds');
+		t.end();
+	});
+
+	test('MinFromTime', function (t) {
+		var now = new Date();
+		t.equal(ES.MinFromTime(now.getTime()), now.getUTCMinutes(), 'minute from Date timestamp matches getUTCMinutes');
+		t.end();
+	});
+
+	test('HourFromTime', function (t) {
+		var now = new Date();
+		t.equal(ES.HourFromTime(now.getTime()), now.getUTCHours(), 'hour from Date timestamp matches getUTCHours');
+		t.end();
+	});
+
+	test('msFromTime', function (t) {
+		var now = new Date();
+		t.equal(ES.msFromTime(now.getTime()), now.getUTCMilliseconds(), 'ms from Date timestamp matches getUTCMilliseconds');
+		t.end();
+	});
+
+	var msPerSecond = 1e3;
+	var msPerMinute = 60 * msPerSecond;
+	var msPerHour = 60 * msPerMinute;
+	var msPerDay = 24 * msPerHour;
+
+	test('Day', function (t) {
+		var time = Date.UTC(2019, 8, 10, 2, 3, 4, 5);
+		var add = 2.5;
+		var later = new Date(time + (add * msPerDay));
+
+		t.equal(ES.Day(later.getTime()), ES.Day(time) + Math.floor(add), 'adding 2.5 days worth of ms, gives a Day delta of 2');
+		t.end();
+	});
+
+	test('TimeWithinDay', function (t) {
+		var time = Date.UTC(2019, 8, 10, 2, 3, 4, 5);
+		var add = 2.5;
+		var later = new Date(time + (add * msPerDay));
+
+		t.equal(ES.TimeWithinDay(later.getTime()), ES.TimeWithinDay(time) + (0.5 * msPerDay), 'adding 2.5 days worth of ms, gives a TimeWithinDay delta of +0.5');
+		t.end();
+	});
+
+	test('DayFromYear', function (t) {
+		t.equal(ES.DayFromYear(2021) - ES.DayFromYear(2020), 366, '2021 is a leap year, has 366 days');
+		t.equal(ES.DayFromYear(2020) - ES.DayFromYear(2019), 365, '2020 is not a leap year, has 365 days');
+		t.equal(ES.DayFromYear(2019) - ES.DayFromYear(2018), 365, '2019 is not a leap year, has 365 days');
+		t.equal(ES.DayFromYear(2018) - ES.DayFromYear(2017), 365, '2018 is not a leap year, has 365 days');
+		t.equal(ES.DayFromYear(2017) - ES.DayFromYear(2016), 366, '2017 is a leap year, has 366 days');
+
+		t.end();
+	});
+
+	test('TimeFromYear', function (t) {
+		for (var i = 1900; i < 2100; i += 1) {
+			t.equal(ES.TimeFromYear(i), Date.UTC(i, 0, 1), 'TimeFromYear matches a Date object’s year: ' + i);
+		}
+		t.end();
+	});
+
+	test('YearFromTime', function (t) {
+		for (var i = 1900; i < 2100; i += 1) {
+			t.equal(ES.YearFromTime(Date.UTC(i, 0, 1)), i, 'YearFromTime matches a Date object’s year on 1/1: ' + i);
+			t.equal(ES.YearFromTime(Date.UTC(i, 10, 1)), i, 'YearFromTime matches a Date object’s year on 10/1: ' + i);
+		}
+		t.end();
+	});
+
+	test('WeekDay', function (t) {
+		var now = new Date();
+		var today = now.getUTCDay();
+		for (var i = 0; i < 7; i += 1) {
+			var weekDay = ES.WeekDay(now.getTime() + (i * msPerDay));
+			t.equal(weekDay, (today + i) % 7, i + ' days after today (' + today + '), WeekDay is ' + weekDay);
+		}
+		t.end();
+	});
+
+	test('DaysInYear', function (t) {
+		t.equal(ES.DaysInYear(2021), 365, '2021 is not a leap year');
+		t.equal(ES.DaysInYear(2020), 366, '2020 is a leap year');
+		t.equal(ES.DaysInYear(2019), 365, '2019 is not a leap year');
+		t.equal(ES.DaysInYear(2018), 365, '2018 is not a leap year');
+		t.equal(ES.DaysInYear(2017), 365, '2017 is not a leap year');
+		t.equal(ES.DaysInYear(2016), 366, '2016 is a leap year');
+
+		t.end();
+	});
+
+	test('InLeapYear', function (t) {
+		t.equal(ES.InLeapYear(Date.UTC(2021, 0, 1)), 0, '2021 is not a leap year');
+		t.equal(ES.InLeapYear(Date.UTC(2020, 0, 1)), 1, '2020 is a leap year');
+		t.equal(ES.InLeapYear(Date.UTC(2019, 0, 1)), 0, '2019 is not a leap year');
+		t.equal(ES.InLeapYear(Date.UTC(2018, 0, 1)), 0, '2018 is not a leap year');
+		t.equal(ES.InLeapYear(Date.UTC(2017, 0, 1)), 0, '2017 is not a leap year');
+		t.equal(ES.InLeapYear(Date.UTC(2016, 0, 1)), 1, '2016 is a leap year');
+
+		t.end();
+	});
+
+	test('DayWithinYear', function (t) {
+		t.equal(ES.DayWithinYear(Date.UTC(2019, 0, 1)), 0, '1/1 is the 1st day');
+		t.equal(ES.DayWithinYear(Date.UTC(2019, 11, 31)), 364, '12/31 is the 365th day in a non leap year');
+		t.equal(ES.DayWithinYear(Date.UTC(2016, 11, 31)), 365, '12/31 is the 366th day in a leap year');
+
+		t.end();
+	});
+
+	test('MonthFromTime', function (t) {
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 0, 1)), 0, 'non-leap: 1/1 gives January');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 0, 31)), 0, 'non-leap: 1/31 gives January');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 1, 1)), 1, 'non-leap: 2/1 gives February');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 1, 28)), 1, 'non-leap: 2/28 gives February');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 1, 29)), 2, 'non-leap: 2/29 gives March');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 2, 1)), 2, 'non-leap: 3/1 gives March');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 2, 31)), 2, 'non-leap: 3/31 gives March');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 3, 1)), 3, 'non-leap: 4/1 gives April');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 3, 30)), 3, 'non-leap: 4/30 gives April');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 4, 1)), 4, 'non-leap: 5/1 gives May');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 4, 31)), 4, 'non-leap: 5/31 gives May');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 5, 1)), 5, 'non-leap: 6/1 gives June');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 5, 30)), 5, 'non-leap: 6/30 gives June');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 6, 1)), 6, 'non-leap: 7/1 gives July');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 6, 31)), 6, 'non-leap: 7/31 gives July');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 7, 1)), 7, 'non-leap: 8/1 gives August');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 7, 30)), 7, 'non-leap: 8/30 gives August');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 8, 1)), 8, 'non-leap: 9/1 gives September');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 8, 30)), 8, 'non-leap: 9/30 gives September');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 9, 1)), 9, 'non-leap: 10/1 gives October');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 9, 31)), 9, 'non-leap: 10/31 gives October');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 10, 1)), 10, 'non-leap: 11/1 gives November');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 10, 30)), 10, 'non-leap: 11/30 gives November');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 11, 1)), 11, 'non-leap: 12/1 gives December');
+		t.equal(ES.MonthFromTime(Date.UTC(2019, 11, 31)), 11, 'non-leap: 12/31 gives December');
+
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 0, 1)), 0, 'leap: 1/1 gives January');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 0, 31)), 0, 'leap: 1/31 gives January');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 1, 1)), 1, 'leap: 2/1 gives February');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 1, 28)), 1, 'leap: 2/28 gives February');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 1, 29)), 1, 'leap: 2/29 gives February');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 2, 1)), 2, 'leap: 3/1 gives March');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 2, 31)), 2, 'leap: 3/31 gives March');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 3, 1)), 3, 'leap: 4/1 gives April');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 3, 30)), 3, 'leap: 4/30 gives April');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 4, 1)), 4, 'leap: 5/1 gives May');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 4, 31)), 4, 'leap: 5/31 gives May');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 5, 1)), 5, 'leap: 6/1 gives June');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 5, 30)), 5, 'leap: 6/30 gives June');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 6, 1)), 6, 'leap: 7/1 gives July');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 6, 31)), 6, 'leap: 7/31 gives July');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 7, 1)), 7, 'leap: 8/1 gives August');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 7, 30)), 7, 'leap: 8/30 gives August');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 8, 1)), 8, 'leap: 9/1 gives September');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 8, 30)), 8, 'leap: 9/30 gives September');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 9, 1)), 9, 'leap: 10/1 gives October');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 9, 31)), 9, 'leap: 10/31 gives October');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 10, 1)), 10, 'leap: 11/1 gives November');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 10, 30)), 10, 'leap: 11/30 gives November');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 11, 1)), 11, 'leap: 12/1 gives December');
+		t.equal(ES.MonthFromTime(Date.UTC(2016, 11, 31)), 11, 'leap: 12/31 gives December');
+		t.end();
+	});
+
+	test('DateFromTime', function (t) {
+		var i;
+		for (i = 1; i <= 28; i += 1) {
+			t.equal(ES.DateFromTime(Date.UTC(2019, 1, i)), i, '2019.02.' + i + ' is date ' + i);
+		}
+		for (i = 1; i <= 29; i += 1) {
+			t.equal(ES.DateFromTime(Date.UTC(2016, 1, i)), i, '2016.02.' + i + ' is date ' + i);
+		}
+		for (i = 1; i <= 30; i += 1) {
+			t.equal(ES.DateFromTime(Date.UTC(2019, 8, i)), i, '2019.09.' + i + ' is date ' + i);
+		}
+		for (i = 1; i <= 31; i += 1) {
+			t.equal(ES.DateFromTime(Date.UTC(2019, 9, i)), i, '2019.10.' + i + ' is date ' + i);
+		}
+		t.end();
+	});
+
+	test('MakeDay', function (t) {
+		var day2015 = 16687;
+		t.equal(ES.MakeDay(2015, 8, 9), day2015, '2015.09.09 is day 16687');
+		var day2016 = day2015 + 366; // 2016 is a leap year
+		t.equal(ES.MakeDay(2016, 8, 9), day2016, '2015.09.09 is day 17053');
+		var day2017 = day2016 + 365;
+		t.equal(ES.MakeDay(2017, 8, 9), day2017, '2017.09.09 is day 17418');
+		var day2018 = day2017 + 365;
+		t.equal(ES.MakeDay(2018, 8, 9), day2018, '2018.09.09 is day 17783');
+		var day2019 = day2018 + 365;
+		t.equal(ES.MakeDay(2019, 8, 9), day2019, '2019.09.09 is day 18148');
+		t.end();
+	});
+
+	test('MakeDate', function (t) {
+		forEach(v.infinities.concat(NaN), function (nonFiniteNumber) {
+			t.ok(is(ES.MakeDate(nonFiniteNumber, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `day`');
+			t.ok(is(ES.MakeDate(0, nonFiniteNumber), NaN), debug(nonFiniteNumber) + ' is not a finite `time`');
+		});
+		t.equal(ES.MakeDate(0, 0), 0, 'zero day and zero time is zero date');
+		t.equal(ES.MakeDate(0, 123), 123, 'zero day and nonzero time is a date of the "time"');
+		t.equal(ES.MakeDate(1, 0), msPerDay, 'day of 1 and zero time is a date of "ms per day"');
+		t.equal(ES.MakeDate(3, 0), 3 * msPerDay, 'day of 3 and zero time is a date of thrice "ms per day"');
+		t.equal(ES.MakeDate(1, 123), msPerDay + 123, 'day of 1 and nonzero time is a date of "ms per day" plus the "time"');
+		t.equal(ES.MakeDate(3, 123), (3 * msPerDay) + 123, 'day of 3 and nonzero time is a date of thrice "ms per day" plus the "time"');
+
+		t.end();
+	});
+
+	test('MakeTime', function (t) {
+		forEach(v.infinities.concat(NaN), function (nonFiniteNumber) {
+			t.ok(is(ES.MakeTime(nonFiniteNumber, 0, 0, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `hour`');
+			t.ok(is(ES.MakeTime(0, nonFiniteNumber, 0, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `min`');
+			t.ok(is(ES.MakeTime(0, 0, nonFiniteNumber, 0), NaN), debug(nonFiniteNumber) + ' is not a finite `sec`');
+			t.ok(is(ES.MakeTime(0, 0, 0, nonFiniteNumber), NaN), debug(nonFiniteNumber) + ' is not a finite `ms`');
+		});
+
+		t.equal(
+			ES.MakeTime(1.2, 2.3, 3.4, 4.5),
+			(1 * msPerHour) + (2 * msPerMinute) + (3 * msPerSecond) + 4,
+			'all numbers are converted to integer, multiplied by the right number of ms, and summed'
+		);
+
+		t.end();
+	});
+
+	test('TimeClip', function (t) {
+		forEach(v.infinities.concat(NaN), function (nonFiniteNumber) {
+			t.ok(is(ES.TimeClip(nonFiniteNumber), NaN), debug(nonFiniteNumber) + ' is not a finite `time`');
+		});
+		t.ok(is(ES.TimeClip(8.64e15 + 1), NaN), '8.64e15 is the largest magnitude considered "finite"');
+		t.ok(is(ES.TimeClip(-8.64e15 - 1), NaN), '-8.64e15 is the largest magnitude considered "finite"');
+
+		forEach(v.zeroes.concat([-10, 10, +new Date()]), function (time) {
+			t.looseEqual(ES.TimeClip(time), time, debug(time) + ' is a time of ' + debug(time));
+		});
+
+		t.end();
+	});
+
+	test('modulo', function (t) {
+		t.equal(3 % 2, 1, '+3 % 2 is +1');
+		t.equal(ES.modulo(3, 2), 1, '+3 mod 2 is +1');
+
+		t.equal(-3 % 2, -1, '-3 % 2 is -1');
+		t.equal(ES.modulo(-3, 2), 1, '-3 mod 2 is +1');
+		t.end();
+	});
+
+	test('ToDateString', function (t) {
+		forEach(v.nonNumbers, function (nonNumber) {
+			t['throws'](
+				function () { ES.ToDateString(nonNumber); },
+				TypeError,
+				debug(nonNumber) + ' is not a Number'
+			);
+		});
+
+		t.equal(ES.ToDateString(NaN), 'Invalid Date', 'NaN becomes "Invalid Date"');
+		var now = +new Date();
+		t.equal(ES.ToDateString(now), Date(now), 'any timestamp becomes `Date(timestamp)`');
+		t.end();
+	});
+
+	test('CreateListFromArrayLike', function (t) {
+		forEach(v.primitives, function (nonObject) {
+			t['throws'](
+				function () { ES.CreateListFromArrayLike(nonObject); },
+				TypeError,
+				debug(nonObject) + ' is not an Object'
+			);
+		});
+		forEach(v.nonArrays, function (nonArray) {
+			t['throws'](
+				function () { ES.CreateListFromArrayLike({}, nonArray); },
+				TypeError,
+				debug(nonArray) + ' is not an Array'
+			);
+		});
+
+		t.deepEqual(
+			ES.CreateListFromArrayLike({ length: 2, 0: 'a', 1: 'b', 2: 'c' }),
+			['a', 'b'],
+			'arraylike stops at the length'
+		);
+
+		t.end();
+	});
+
+	test('GetPrototypeFromConstructor', function (t) {
+		forEach(v.nonFunctions, function (nonFunction) {
+			t['throws'](
+				function () { ES.GetPrototypeFromConstructor(nonFunction, '%Array%'); },
+				TypeError,
+				debug(nonFunction) + ' is not a constructor'
+			);
+		});
+
+		forEach(arrowFns, function (arrowFn) {
+			t['throws'](
+				function () { ES.GetPrototypeFromConstructor(arrowFn, '%Array%'); },
+				TypeError,
+				debug(arrowFn) + ' is not a constructor'
+			);
+		});
+
+		var f = function () {};
+		t.equal(
+			ES.GetPrototypeFromConstructor(f, '%Array.prototype%'),
+			f.prototype,
+			'function with normal `prototype` property returns it'
+		);
+		forEach([true, 'foo', 42], function (truthyPrimitive) {
+			f.prototype = truthyPrimitive;
+			t.equal(
+				ES.GetPrototypeFromConstructor(f, '%Array.prototype%'),
+				Array.prototype,
+				'function with non-object `prototype` property (' + debug(truthyPrimitive) + ') returns default intrinsic'
+			);
+		});
+
+		t.end();
+	});
+
+	var getNamelessFunction = function () {
+		var f = Object(function () {});
+		try {
+			delete f.name;
+		} catch (e) { /**/ }
+		return f;
+	};
+
+	test('SetFunctionName', function (t) {
+		t.test('non-extensible function', { skip: !Object.preventExtensions }, function (st) {
+			var f = getNamelessFunction();
+			Object.preventExtensions(f);
+			st['throws'](
+				function () { ES.SetFunctionName(f, ''); },
+				TypeError,
+				'throws on a non-extensible function'
+			);
+			st.end();
+		});
+
+		t.test('has an own name property', { skip: !functionsHaveNames }, function (st) {
+			st['throws'](
+				function () { ES.SetFunctionName(function g() {}, ''); },
+				TypeError,
+				'throws if function has an own `name` property'
+			);
+			st.end();
+		});
+
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.SetFunctionName(getNamelessFunction(), nonPropertyKey); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a Symbol or String'
+			);
+		});
+
+		t.test('symbols', { skip: !v.hasSymbols || has(getNamelessFunction(), 'name') }, function (st) {
+			var pairs = [
+				[Symbol(), ''],
+				[Symbol(undefined), ''],
+				[Symbol(null), '[null]'],
+				[Symbol(''), getInferredName ? '[]' : ''],
+				[Symbol.iterator, '[Symbol.iterator]'],
+				[Symbol('foo'), '[foo]']
+			];
+			forEach(pairs, function (pair) {
+				var sym = pair[0];
+				var desc = pair[1];
+				var f = getNamelessFunction();
+				ES.SetFunctionName(f, sym);
+				st.equal(f.name, desc, debug(sym) + ' yields a name of ' + debug(desc));
+			});
+
+			st.end();
+		});
+
+		var f = getNamelessFunction();
+		t.test('when names are configurable', { skip: !functionsHaveConfigurableNames || has(f, 'name') }, function (st) {
+			// without prefix
+			st.notEqual(f.name, 'foo', 'precondition');
+			ES.SetFunctionName(f, 'foo');
+			st.equal(f.name, 'foo', 'function name is set without a prefix');
+
+			// with prefix
+			var g = getNamelessFunction();
+			st.notEqual(g.name, 'pre- foo', 'precondition');
+			ES.SetFunctionName(g, 'foo', 'pre-');
+			st.equal(g.name, 'pre- foo', 'function name is set with a prefix');
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('OrdinaryCreateFromConstructor', function (t) {
+		forEach(v.nonFunctions, function (nonFunction) {
+			t['throws'](
+				function () { ES.OrdinaryCreateFromConstructor(nonFunction, '%Array.prototype%'); },
+				TypeError,
+				debug(nonFunction) + ' is not a constructor'
+			);
+		});
+
+		forEach(arrowFns, function (arrowFn) {
+			t['throws'](
+				function () { ES.OrdinaryCreateFromConstructor(arrowFn, '%Array.prototype%'); },
+				TypeError,
+				debug(arrowFn) + ' is not a constructor'
+			);
+		});
+
+		t.test('proto arg', function (st) {
+			var Parent = function Parent() {};
+			Parent.prototype.foo = {};
+			var child = ES.OrdinaryCreateFromConstructor(Parent, '%Array.prototype%');
+			st.equal(child instanceof Parent, true, 'child is instanceof Parent');
+			st.equal(child instanceof Array, false, 'child is not instanceof Array');
+			st.equal(child.foo, Parent.prototype.foo, 'child inherits properties from Parent.prototype');
+
+			st.end();
+		});
+
+		t.test('internal slots arg', function (st) {
+			st.doesNotThrow(
+				function () { ES.OrdinaryCreateFromConstructor(function () {}, '%Array.prototype%', []); },
+				'an empty slot list is valid'
+			);
+
+			st['throws'](
+				function () { ES.OrdinaryCreateFromConstructor(function () {}, '%Array.prototype%', ['a']); },
+				SyntaxError,
+				'internal slots are not supported'
+			);
+
+			st.end();
+		});
+
+		t.end();
+	});
+};
+
+var es2016 = function ES2016(ES, ops, expectedMissing, skips) {
+	es2015(ES, ops, expectedMissing, skips);
+
+	test('SameValueNonNumber', { skip: skips && skips.SameValueNonNumber }, function (t) {
+		var willThrow = [
+			[3, 4],
+			[NaN, 4],
+			[4, ''],
+			['abc', true],
+			[{}, false]
+		];
+		forEach(willThrow, function (nums) {
+			t['throws'](function () { return ES.SameValueNonNumber.apply(ES, nums); }, TypeError, 'value must be same type and non-number');
+		});
+
+		forEach(v.objects.concat(v.nonNumberPrimitives), function (val) {
+			t.equal(val === val, ES.SameValueNonNumber(val, val), debug(val) + ' is SameValueNonNumber to itself');
+		});
+
+		t.end();
+	});
+
+	test('IterableToArrayLike', { skip: skips && skips.IterableToArrayLike }, function (t) {
+		t.test('custom iterables', { skip: !v.hasSymbols }, function (st) {
+			var O = {};
+			O[Symbol.iterator] = function () {
+				var i = -1;
+				return {
+					next: function () {
+						i += 1;
+						return {
+							done: i >= 5,
+							value: i
+						};
+					}
+				};
+			};
+			st.deepEqual(
+				ES.IterableToArrayLike(O),
+				[0, 1, 2, 3, 4],
+				'Symbol.iterator method is called and values collected'
+			);
+
+			st.end();
+		});
+
+		t.deepEqual(ES.IterableToArrayLike('abc'), ['a', 'b', 'c'], 'a string of code units spreads');
+		t.deepEqual(ES.IterableToArrayLike('💩'), ['💩'], 'a string of code points spreads');
+		t.deepEqual(ES.IterableToArrayLike('a💩c'), ['a', '💩', 'c'], 'a string of code points and units spreads');
+
+		var arr = [1, 2, 3];
+		t.deepEqual(ES.IterableToArrayLike(arr), arr, 'an array becomes a similar array');
+		t.notEqual(ES.IterableToArrayLike(arr), arr, 'an array becomes a different, but similar, array');
+
+		var O = {};
+		t.equal(ES.IterableToArrayLike(O), O, 'a non-iterable non-array non-string object is returned directly');
+
+		t.end();
+	});
+
+	test('OrdinaryGetPrototypeOf', function (t) {
+		t.test('values', { skip: !$getProto }, function (st) {
+			st.equal(ES.OrdinaryGetPrototypeOf([]), Array.prototype, 'array [[Prototype]] is Array.prototype');
+			st.equal(ES.OrdinaryGetPrototypeOf({}), Object.prototype, 'object [[Prototype]] is Object.prototype');
+			st.equal(ES.OrdinaryGetPrototypeOf(/a/g), RegExp.prototype, 'regex [[Prototype]] is RegExp.prototype');
+			st.equal(ES.OrdinaryGetPrototypeOf(Object('')), String.prototype, 'boxed string [[Prototype]] is String.prototype');
+			st.equal(ES.OrdinaryGetPrototypeOf(Object(42)), Number.prototype, 'boxed number [[Prototype]] is Number.prototype');
+			st.equal(ES.OrdinaryGetPrototypeOf(Object(true)), Boolean.prototype, 'boxed boolean [[Prototype]] is Boolean.prototype');
+			if (v.hasSymbols) {
+				st.equal(ES.OrdinaryGetPrototypeOf(Object(Symbol.iterator)), Symbol.prototype, 'boxed symbol [[Prototype]] is Symbol.prototype');
+			}
+			st.end();
+		});
+
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.OrdinaryGetPrototypeOf(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+		t.end();
+	});
+
+	test('OrdinarySetPrototypeOf', { skip: !$getProto || !$setProto }, function (t) {
+		var a = [];
+		var proto = {};
+
+		t.equal(ES.OrdinaryGetPrototypeOf(a), Array.prototype, 'precondition');
+		t.equal(ES.OrdinarySetPrototypeOf(a, proto), true, 'setting prototype is successful');
+		t.equal(ES.OrdinaryGetPrototypeOf(a), proto, 'postcondition');
+
+		t.end();
+	});
+
+	test('UTF16Encoding', function (t) {
+		forEach(v.nonNumbers, function (nonNumber) {
+			t['throws'](
+				function () { ES.UTF16Encoding(nonNumber); },
+				TypeError,
+				debug(nonNumber) + ' is not a Number'
+			);
+		});
+
+		t['throws'](
+			function () { ES.UTF16Encoding(-1); },
+			TypeError,
+			'-1 is < 0'
+		);
+
+		t['throws'](
+			function () { ES.UTF16Encoding(0x10FFFF + 1); },
+			TypeError,
+			'0x10FFFF + 1 is > 0x10FFFF'
+		);
+
+		t.equal(ES.UTF16Encoding(0xd83d), leadingPoo.charCodeAt(0), '0xD83D is the first half of ' + wholePoo);
+		t.equal(ES.UTF16Encoding(0xdca9), trailingPoo.charCodeAt(0), '0xD83D is the last half of ' + wholePoo);
+
+		t.end();
+	});
+
+	test('QuoteJSONString', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.QuoteJSONString(nonString); },
+				TypeError,
+				debug(nonString) + ' is not a String'
+			);
+		});
+
+		t.equal(ES.QuoteJSONString(''), '""', '"" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('a'), '"a"', '"a" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('"'), '"\\""', '"\\"" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\b'), '"\\b"', '"\\b" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\t'), '"\\t"', '"\\t" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\n'), '"\\n"', '"\\n" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\f'), '"\\f"', '"\\f" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\r'), '"\\r"', '"\\r" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\\'), '"\\\\"', '"\\\\" gets properly JSON-quoted');
+		t.equal(ES.QuoteJSONString('\\'), '"\\\\"', '"\\\\" gets properly JSON-quoted');
+
+		t.end();
+	});
+};
+
+var es2017 = function ES2017(ES, ops, expectedMissing, skips) {
+	es2016(ES, ops, expectedMissing, assign({}, skips, {
+		EnumerableOwnNames: true,
+		IterableToArrayLike: true
+	}));
+
+	test('ToIndex', function (t) {
+		t.ok(is(ES.ToIndex(), 0), 'no value gives 0');
+		t.ok(is(ES.ToIndex(undefined), 0), 'undefined value gives 0');
+
+		t['throws'](function () { ES.ToIndex(-1); }, RangeError, 'negative numbers throw');
+
+		t['throws'](function () { ES.ToIndex(MAX_SAFE_INTEGER + 1); }, RangeError, 'too large numbers throw');
+
+		t.equal(ES.ToIndex(3), 3, 'numbers work');
+		t.equal(ES.ToIndex(v.valueOfOnlyObject), 4, 'coercible objects are coerced');
+
+		t.end();
+	});
+
+	test('EnumerableOwnProperties', { skip: skips && skips.EnumerableOwnProperties }, function (t) {
+		var obj = testEnumerableOwnNames(t, function (O) {
+			return ES.EnumerableOwnProperties(O, 'key');
+		});
+
+		t.deepEqual(
+			ES.EnumerableOwnProperties(obj, 'value'),
+			[obj.own],
+			'returns enumerable own values'
+		);
+
+		t.deepEqual(
+			ES.EnumerableOwnProperties(obj, 'key+value'),
+			[['own', obj.own]],
+			'returns enumerable own entries'
+		);
+
+		t.end();
+	});
+
+	test('IterableToList', function (t) {
+		var customIterator = function () {
+			var i = -1;
+			return {
+				next: function () {
+					i += 1;
+					return {
+						done: i >= 5,
+						value: i
+					};
+				}
+			};
+		};
+
+		t.deepEqual(
+			ES.IterableToList({}, customIterator),
+			[0, 1, 2, 3, 4],
+			'iterator method is called and values collected'
+		);
+
+		t.test('Symbol support', { skip: !v.hasSymbols }, function (st) {
+			st.deepEqual(ES.IterableToList('abc', String.prototype[Symbol.iterator]), ['a', 'b', 'c'], 'a string of code units spreads');
+			st.deepEqual(ES.IterableToList('☃', String.prototype[Symbol.iterator]), ['☃'], 'a string of code points spreads');
+
+			var arr = [1, 2, 3];
+			st.deepEqual(ES.IterableToList(arr, arr[Symbol.iterator]), arr, 'an array becomes a similar array');
+			st.notEqual(ES.IterableToList(arr, arr[Symbol.iterator]), arr, 'an array becomes a different, but similar, array');
+
+			st.end();
+		});
+
+		t['throws'](
+			function () { ES.IterableToList({}, void 0); },
+			TypeError,
+			'non-function iterator method'
+		);
+
+		t.end();
+	});
+
+	test('StringGetOwnProperty', function (t) {
+		forEach(v.nonStrings.concat(v.strings), function (nonBoxedString) {
+			t['throws'](
+				function () { ES.StringGetOwnProperty(nonBoxedString, '0'); },
+				TypeError,
+				debug(nonBoxedString) + ' is not a boxed String'
+			);
+		});
+		forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+			t['throws'](
+				function () { ES.StringGetOwnProperty(Object(''), nonPropertyKey); },
+				TypeError,
+				debug(nonPropertyKey) + ' is not a Property Key'
+			);
+		});
+
+		t.equal(ES.StringGetOwnProperty(Object(''), '0'), undefined, 'empty boxed string yields undefined');
+
+		forEach(v.strings, function (string) {
+			if (string) {
+				var S = Object(string);
+				for (var i = 0; i < string.length; i += 1) {
+					var descriptor = ES.StringGetOwnProperty(S, String(i));
+					t.deepEqual(
+						descriptor,
+						{
+							'[[Configurable]]': false,
+							'[[Enumerable]]': true,
+							'[[Value]]': string.charAt(i),
+							'[[Writable]]': false
+						},
+						debug(string) + ': property ' + debug(String(i)) + ': returns expected descriptor'
+					);
+				}
+			}
+		});
+
+		t.end();
+	});
+};
+
+var es2018 = function ES2018(ES, ops, expectedMissing, skips) {
+	es2017(ES, ops, expectedMissing, assign({}, skips, {
+		EnumerableOwnProperties: true,
+		GetSubstitution: true,
+		IsPropertyDescriptor: true
+	}));
+
+	test('thisSymbolValue', function (t) {
+		forEach(v.nonSymbolPrimitives.concat(v.objects), function (nonSymbol) {
+			t['throws'](
+				function () { ES.thisSymbolValue(nonSymbol); },
+				v.hasSymbols ? TypeError : SyntaxError,
+				debug(nonSymbol) + ' is not a Symbol'
+			);
+		});
+
+		t.test('no native Symbols', { skip: v.hasSymbols }, function (st) {
+			forEach(v.objects.concat(v.primitives), function (value) {
+				st['throws'](
+					function () { ES.thisSymbolValue(value); },
+					SyntaxError,
+					'Symbols are not supported'
+				);
+			});
+			st.end();
+		});
+
+		t.test('symbol values', { skip: !v.hasSymbols }, function (st) {
+			forEach(v.symbols, function (symbol) {
+				st.equal(ES.thisSymbolValue(symbol), symbol, 'Symbol value of ' + debug(symbol) + ' is same symbol');
+
+				st.equal(
+					ES.thisSymbolValue(Object(symbol)),
+					symbol,
+					'Symbol value of ' + debug(Object(symbol)) + ' is ' + debug(symbol)
+				);
+			});
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('IsStringPrefix', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.IsStringPrefix(nonString, 'a'); },
+				TypeError,
+				'first arg: ' + debug(nonString) + ' is not a string'
+			);
+			t['throws'](
+				function () { ES.IsStringPrefix('a', nonString); },
+				TypeError,
+				'second arg: ' + debug(nonString) + ' is not a string'
+			);
+		});
+
+		forEach(v.strings, function (string) {
+			t.equal(ES.IsStringPrefix(string, string), true, debug(string) + ' is a prefix of itself');
+
+			t.equal(ES.IsStringPrefix('', string), true, 'the empty string is a prefix of everything');
+		});
+
+		t.equal(ES.IsStringPrefix('abc', 'abcd'), true, '"abc" is a prefix of "abcd"');
+		t.equal(ES.IsStringPrefix('abcd', 'abc'), false, '"abcd" is not a prefix of "abc"');
+
+		t.equal(ES.IsStringPrefix('a', 'bc'), false, '"a" is not a prefix of "bc"');
+
+		t.end();
+	});
+
+	test('NumberToString', { skip: skips && skips.NumberToString }, function (t) {
+		forEach(v.nonNumbers, function (nonNumber) {
+			t['throws'](
+				function () { ES.NumberToString(nonNumber); },
+				TypeError,
+				debug(nonNumber) + ' is not a Number'
+			);
+		});
+
+		forEach(v.numbers, function (number) {
+			t.equal(ES.NumberToString(number), String(number), debug(number) + ' stringifies to ' + number);
+		});
+
+		t.end();
+	});
+
+	test('CopyDataProperties', function (t) {
+		t.test('first argument: target', function (st) {
+			forEach(v.primitives, function (primitive) {
+				st['throws'](
+					function () { ES.CopyDataProperties(primitive, {}, []); },
+					TypeError,
+					debug(primitive) + ' is not an Object'
+				);
+			});
+			st.end();
+		});
+
+		t.test('second argument: source', function (st) {
+			var frozenTarget = Object.freeze ? Object.freeze({}) : {};
+			forEach(v.nullPrimitives, function (nullish) {
+				st.equal(
+					ES.CopyDataProperties(frozenTarget, nullish, []),
+					frozenTarget,
+					debug(nullish) + ' "source" yields identical, unmodified target'
+				);
+			});
+
+			forEach(v.nonNullPrimitives, function (objectCoercible) {
+				var target = {};
+				var result = ES.CopyDataProperties(target, objectCoercible, []);
+				st.equal(result, target, 'result === target');
+				st.deepEqual(keys(result), keys(Object(objectCoercible)), 'target ends up with keys of ' + debug(objectCoercible));
+			});
+
+			st.test('enumerable accessor property', { skip: !defineProperty.oDP }, function (s2t) {
+				var target = {};
+				var source = {};
+				defineProperty(source, 'a', {
+					enumerable: true,
+					get: function () { return 42; }
+				});
+				var result = ES.CopyDataProperties(target, source, []);
+				s2t.equal(result, target, 'result === target');
+				s2t.deepEqual(result, { a: 42 }, 'target ends up with enumerable accessor of source');
+				s2t.end();
+			});
+
+			st.end();
+		});
+
+		t.test('third argument: excludedItems', function (st) {
+			forEach(v.objects.concat(v.primitives), function (nonArray) {
+				st['throws'](
+					function () { ES.CopyDataProperties({}, {}, nonArray); },
+					TypeError,
+					debug(nonArray) + ' is not an Array'
+				);
+			});
+
+			forEach(v.nonPropertyKeys, function (nonPropertyKey) {
+				st['throws'](
+					function () { ES.CopyDataProperties({}, {}, [nonPropertyKey]); },
+					TypeError,
+					debug(nonPropertyKey) + ' is not a Property Key'
+				);
+			});
+
+			var result = ES.CopyDataProperties({}, { a: 1, b: 2, c: 3 }, ['b']);
+			st.deepEqual(keys(result).sort(), ['a', 'c'].sort(), 'excluded string keys are excluded');
+
+			st.test('excluding symbols', { skip: !v.hasSymbols }, function (s2t) {
+				var source = {};
+				forEach(v.symbols, function (symbol) {
+					source[symbol] = true;
+				});
+
+				var includedSymbols = v.symbols.slice(1);
+				var excludedSymbols = v.symbols.slice(0, 1);
+				var target = ES.CopyDataProperties({}, source, excludedSymbols);
+
+				forEach(includedSymbols, function (symbol) {
+					s2t.equal(has(target, symbol), true, debug(symbol) + ' is included');
+				});
+
+				forEach(excludedSymbols, function (symbol) {
+					s2t.equal(has(target, symbol), false, debug(symbol) + ' is excluded');
+				});
+
+				s2t.end();
+			});
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('PromiseResolve', function (t) {
+		t.test('Promises unsupported', { skip: typeof Promise === 'function' }, function (st) {
+			st['throws'](
+				function () { ES.PromiseResolve(); },
+				SyntaxError,
+				'Promises are not supported'
+			);
+			st.end();
+		});
+
+		t.test('Promises supported', { skip: typeof Promise !== 'function' }, function (st) {
+			st.plan(2);
+
+			var a = {};
+			var b = {};
+			var fulfilled = Promise.resolve(a);
+			var rejected = Promise.reject(b);
+
+			ES.PromiseResolve(Promise, fulfilled).then(function (x) {
+				st.equal(x, a, 'fulfilled promise resolves to fulfilled');
+			});
+
+			ES.PromiseResolve(Promise, rejected)['catch'](function (e) {
+				st.equal(e, b, 'rejected promise resolves to rejected');
+			});
+		});
+
+		t.end();
+	});
+
+	test('EnumerableOwnPropertyNames', { skip: skips && skips.EnumerableOwnPropertyNames }, function (t) {
+		var obj = testEnumerableOwnNames(t, function (O) {
+			return ES.EnumerableOwnPropertyNames(O, 'key');
+		});
+
+		t.deepEqual(
+			ES.EnumerableOwnPropertyNames(obj, 'value'),
+			[obj.own],
+			'returns enumerable own values'
+		);
+
+		t.deepEqual(
+			ES.EnumerableOwnPropertyNames(obj, 'key+value'),
+			[['own', obj.own]],
+			'returns enumerable own entries'
+		);
+
+		t.end();
+	});
+
+	test('IsPromise', { skip: typeof Promise !== 'function' }, function (t) {
+		forEach(v.objects.concat(v.primitives), function (nonPromise) {
+			t.equal(ES.IsPromise(nonPromise), false, debug(nonPromise) + ' is not a Promise');
+		});
+
+		var thenable = { then: Promise.prototype.then };
+		t.equal(ES.IsPromise(thenable), false, 'generic thenable is not a Promise');
+
+		t.equal(ES.IsPromise(Promise.resolve()), true, 'Promise is a Promise');
+
+		t.end();
+	});
+
+	test('GetSubstitution (ES2018+)', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.GetSubstitution(nonString, '', 0, [], undefined, ''); },
+				TypeError,
+				'`matched`: ' + debug(nonString) + ' is not a String'
+			);
+
+			t['throws'](
+				function () { ES.GetSubstitution('', nonString, 0, [], undefined, ''); },
+				TypeError,
+				'`str`: ' + debug(nonString) + ' is not a String'
+			);
+
+			t['throws'](
+				function () { ES.GetSubstitution('', '', 0, [], undefined, nonString); },
+				TypeError,
+				'`replacement`: ' + debug(nonString) + ' is not a String'
+			);
+
+			t['throws'](
+				function () { ES.GetSubstitution('', '', 0, [nonString], undefined, ''); },
+				TypeError,
+				'`captures`: ' + debug([nonString]) + ' is not an Array of strings'
+			);
+		});
+
+		forEach(v.nonIntegerNumbers.concat([-1, -42, -Infinity]), function (nonNonNegativeInteger) {
+			t['throws'](
+				function () { ES.GetSubstitution('', '', nonNonNegativeInteger, [], undefined, ''); },
+				TypeError,
+				'`position`: ' + debug(nonNonNegativeInteger) + ' is not a non-negative integer'
+			);
+		});
+
+		forEach(v.nonArrays, function (nonArray) {
+			t['throws'](
+				function () { ES.GetSubstitution('', '', 0, nonArray, undefined, ''); },
+				TypeError,
+				'`captures`: ' + debug(nonArray) + ' is not an Array'
+			);
+		});
+
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 3, [], undefined, '123'),
+			'123',
+			'returns the substitution'
+		);
+		t.equal(
+			ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '$$2$'),
+			'$2$',
+			'supports $$, and trailing $'
+		);
+
+		t.equal(
+			ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '>$&<'),
+			'>abcdef<',
+			'supports $&'
+		);
+
+		t.equal(
+			ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '>$`<'),
+			'><',
+			'supports $` at position 0'
+		);
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 3, [], undefined, '>$`<'),
+			'>ab<',
+			'supports $` at position > 0'
+		);
+
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 7, [], undefined, ">$'<"),
+			'><',
+			"supports $' at a position where there's less than `matched.length` chars left"
+		);
+		t.equal(
+			ES.GetSubstitution('def', 'abcdefghi', 3, [], undefined, ">$'<"),
+			'>ghi<',
+			"supports $' at a position where there's more than `matched.length` chars left"
+		);
+
+		for (var i = 0; i < 100; i += 1) {
+			var captures = [];
+			captures[i] = 'test';
+			if (i > 0) {
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '>$' + i + '<'),
+					'>undefined<',
+					'supports $' + i + ' with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '>$' + i),
+					'>undefined',
+					'supports $' + i + ' at the end of the replacement, with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, undefined, '>$' + i + '<'),
+					'><',
+					'supports $' + i + ' with a capture at that index'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, undefined, '>$' + i),
+					'>',
+					'supports $' + i + ' at the end of the replacement, with a capture at that index'
+				);
+			}
+			if (i < 10) {
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '>$0' + i + '<'),
+					i === 0 ? '><' : '>undefined<',
+					'supports $0' + i + ' with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, [], undefined, '>$0' + i),
+					i === 0 ? '>' : '>undefined',
+					'supports $0' + i + ' at the end of the replacement, with no captures'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, undefined, '>$0' + i + '<'),
+					'><',
+					'supports $0' + i + ' with a capture at that index'
+				);
+				t.equal(
+					ES.GetSubstitution('abcdef', 'abcdefghi', 0, captures, undefined, '>$0' + i),
+					'>',
+					'supports $0' + i + ' at the end of the replacement, with a capture at that index'
+				);
+			}
+		}
+
+		t.end();
+	});
+
+	test('DateString', function (t) {
+		forEach(v.nonNumbers.concat(NaN), function (nonNumberOrNaN) {
+			t['throws'](
+				function () { ES.DateString(nonNumberOrNaN); },
+				TypeError,
+				debug(nonNumberOrNaN) + ' is not a non-NaN Number'
+			);
+		});
+
+		t.equal(ES.DateString(Date.UTC(2019, 8, 10, 7, 8, 9)), 'Tue Sep 10 2019');
+		t.equal(ES.DateString(Date.UTC(2016, 1, 29, 7, 8, 9)), 'Mon Feb 29 2016'); // leap day
+		t.end();
+	});
+
+	test('TimeString', function (t) {
+		forEach(v.nonNumbers.concat(NaN), function (nonNumberOrNaN) {
+			t['throws'](
+				function () { ES.TimeString(nonNumberOrNaN); },
+				TypeError,
+				debug(nonNumberOrNaN) + ' is not a non-NaN Number'
+			);
+		});
+
+		var tv = Date.UTC(2019, 8, 10, 7, 8, 9);
+		t.equal(ES.TimeString(tv), '07:08:09 GMT');
+		t.end();
+	});
+
+	test('SetFunctionLength', function (t) {
+		forEach(v.nonFunctions, function (nonFunction) {
+			t['throws'](
+				function () { ES.SetFunctionLength(nonFunction, 0); },
+				TypeError,
+				debug(nonFunction) + ' is not a Function'
+			);
+		});
+
+		t.test('non-extensible function', { skip: !Object.preventExtensions }, function (st) {
+			var F = function F() {};
+			Object.preventExtensions(F);
+
+			st['throws'](
+				function () { ES.SetFunctionLength(F, 0); },
+				TypeError,
+				'non-extensible function throws'
+			);
+			st.end();
+		});
+
+		var HasLength = function HasLength(_) { return _; };
+		t.equal(has(HasLength, 'length'), true, 'precondition: `HasLength` has own length');
+		t['throws'](
+			function () { ES.SetFunctionLength(HasLength, 0); },
+			TypeError,
+			'function with own length throws'
+		);
+
+		t.test('no length', { skip: !functionsHaveConfigurableNames }, function (st) {
+			var HasNoLength = function HasNoLength() {};
+			delete HasNoLength.length;
+
+			st.equal(has(HasNoLength, 'length'), false, 'precondition: `HasNoLength` has no own length');
+
+			forEach(v.nonNumbers, function (nonNumber) {
+				st['throws'](
+					function () { ES.SetFunctionLength(HasNoLength, nonNumber); },
+					TypeError,
+					debug(nonNumber) + ' is not a Number'
+				);
+			});
+
+			forEach([-1, -42].concat(v.nonIntegerNumbers), function (nonPositiveInteger) {
+				st['throws'](
+					function () { ES.SetFunctionLength(HasNoLength, nonPositiveInteger); },
+					TypeError,
+					debug(nonPositiveInteger) + ' is not a positive integer Number'
+				);
+			});
+
+			st.end();
+		});
+
+		// defines an own configurable non-enum non-write length property
+
+		t.end();
+	});
+
+	test('UnicodeEscape', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.UnicodeEscape(nonString); },
+				TypeError,
+				debug(nonString) + ' is not a String'
+			);
+		});
+		t['throws'](
+			function () { ES.UnicodeEscape(''); },
+			TypeError,
+			'empty string does not have length 1'
+		);
+		t['throws'](
+			function () { ES.UnicodeEscape('ab'); },
+			TypeError,
+			'2-char string does not have length 1'
+		);
+
+		t.equal(ES.UnicodeEscape(' '), '\\u0020');
+		t.equal(ES.UnicodeEscape('a'), '\\u0061');
+		t.equal(ES.UnicodeEscape(leadingPoo), '\\ud83d');
+		t.equal(ES.UnicodeEscape(trailingPoo), '\\udca9');
+
+		t.end();
+	});
+};
+
+var es2019 = function ES2018(ES, ops, expectedMissing, skips) {
+	es2018(ES, ops, expectedMissing, assign({}, skips, {
+	}));
+
+	test('AddEntriesFromIterable', function (t) {
+		t['throws'](
+			function () { ES.AddEntriesFromIterable({}, undefined, function () {}); },
+			TypeError,
+			'iterable must not be undefined'
+		);
+		t['throws'](
+			function () { ES.AddEntriesFromIterable({}, null, function () {}); },
+			TypeError,
+			'iterable must not be null'
+		);
+		forEach(v.nonFunctions, function (nonFunction) {
+			t['throws'](
+				function () { ES.AddEntriesFromIterable({}, {}, nonFunction); },
+				TypeError,
+				debug(nonFunction) + ' is not a function'
+			);
+		});
+
+		t.test('Symbol support', { skip: !v.hasSymbols }, function (st) {
+			st.plan(4);
+
+			var O = {};
+			st.equal(ES.AddEntriesFromIterable(O, [], function () {}), O, 'returns the target');
+
+			var adder = function (key, value) {
+				st.equal(this, O, 'adder gets proper receiver');
+				st.equal(key, 0, 'k is key');
+				st.equal(value, 'a', 'v is value');
+			};
+			ES.AddEntriesFromIterable(O, ['a'].entries(), adder);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('FlattenIntoArray', function (t) {
+		t.test('no mapper function', function (st) {
+			var testDepth = function testDepth(tt, depth, expected) {
+				var a = [];
+				var o = [[1], 2, , [[3]], [], 4, [[[[5]]]]]; // eslint-disable-line no-sparse-arrays
+				ES.FlattenIntoArray(a, o, o.length, 0, depth);
+				tt.deepEqual(a, expected, 'depth: ' + depth);
+			};
+
+			testDepth(st, 1, [1, 2, [3], 4, [[[5]]]]);
+			testDepth(st, 2, [1, 2, 3, 4, [[5]]]);
+			testDepth(st, 3, [1, 2, 3, 4, [5]]);
+			testDepth(st, 4, [1, 2, 3, 4, 5]);
+			testDepth(st, Infinity, [1, 2, 3, 4, 5]);
+			st.end();
+		});
+
+		t.test('mapper function', function (st) {
+			var testMapper = function testMapper(tt, mapper, expected, thisArg) {
+				var a = [];
+				var o = [[1], 2, , [[3]], [], 4, [[[[5]]]]]; // eslint-disable-line no-sparse-arrays
+				ES.FlattenIntoArray(a, o, o.length, 0, 1, mapper, thisArg);
+				tt.deepEqual(a, expected);
+			};
+
+			var double = function double(x) {
+				return typeof x === 'number' ? 2 * x : x;
+			};
+			testMapper(
+				st,
+				double,
+				[1, 4, [3], 8, [[[5]]]]
+			);
+			var receiver = hasStrictMode ? 42 : Object(42);
+			testMapper(
+				st,
+				function (x) { return [this, double(x)]; },
+				[receiver, [1], receiver, 4, receiver, [[3]], receiver, [], receiver, 8, receiver, [[[[5]]]]],
+				42
+			);
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('TrimString', function (t) {
+		t.test('non-object string', function (st) {
+			forEach(v.nullPrimitives, function (nullish) {
+				st['throws'](
+					function () { ES.TrimString(nullish); },
+					debug(nullish) + ' is not an Object'
+				);
+			});
+			st.end();
+		});
+
+		var string = ' \n abc  \n ';
+		t.equal(ES.TrimString(string, 'start'), string.slice(string.indexOf('a')));
+		t.equal(ES.TrimString(string, 'end'), string.slice(0, string.lastIndexOf('c') + 1));
+		t.equal(ES.TrimString(string, 'start+end'), string.slice(string.indexOf('a'), string.lastIndexOf('c') + 1));
+
+		t.end();
+	});
+};
+
+var es2020 = function ES2019(ES, ops, expectedMissing, skips) {
+	es2019(ES, ops, expectedMissing, assign({}, skips, {
+		NumberToString: true,
+		ObjectCreate: true,
+		SameValueNonNumber: true,
+		ToInteger: true
+	}));
+
+	test('ToInteger', function (t) {
+		forEach([0, -0, NaN], function (num) {
+			t.ok(is(0, ES.ToInteger(num)), debug(num) + ' returns +0');
+		});
+		forEach([Infinity, 42], function (num) {
+			t.ok(is(num, ES.ToInteger(num)), debug(num) + ' returns itself');
+			t.ok(is(-num, ES.ToInteger(-num)), '-' + debug(num) + ' returns itself');
+		});
+		t.equal(3, ES.ToInteger(Math.PI), 'pi returns 3');
+		t['throws'](function () { return ES.ToInteger(v.uncoercibleObject); }, TypeError, 'uncoercibleObject throws');
+		t.end();
+	});
+
+	test('BinaryAnd', function (t) {
+		t.equal(ES.BinaryAnd(0, 0), 0);
+		t.equal(ES.BinaryAnd(0, 1), 0);
+		t.equal(ES.BinaryAnd(1, 0), 0);
+		t.equal(ES.BinaryAnd(1, 1), 1);
+
+		forEach(v.nonIntegerNumbers.concat(v.nonNumberPrimitives, v.objects), function (nonBit) {
+			t['throws'](
+				function () { ES.BinaryAnd(0, nonBit); },
+				TypeError
+			);
+			t['throws'](
+				function () { ES.BinaryAnd(nonBit, 1); },
+				TypeError
+			);
+		});
+		t.end();
+	});
+
+	test('BinaryOr', function (t) {
+		t.equal(ES.BinaryOr(0, 0), 0);
+		t.equal(ES.BinaryOr(0, 1), 1);
+		t.equal(ES.BinaryOr(1, 0), 1);
+		t.equal(ES.BinaryOr(1, 1), 1);
+
+		forEach(v.nonIntegerNumbers.concat(v.nonNumberPrimitives, v.objects), function (nonBit) {
+			t['throws'](
+				function () { ES.BinaryOr(0, nonBit); },
+				TypeError
+			);
+			t['throws'](
+				function () { ES.BinaryOr(nonBit, 1); },
+				TypeError
+			);
+		});
+		t.end();
+	});
+
+	test('BinaryXor', function (t) {
+		t.equal(ES.BinaryXor(0, 0), 0);
+		t.equal(ES.BinaryXor(0, 1), 1);
+		t.equal(ES.BinaryXor(1, 0), 1);
+		t.equal(ES.BinaryXor(1, 1), 0);
+
+		forEach(v.nonIntegerNumbers.concat(v.nonNumberPrimitives, v.objects), function (nonBit) {
+			t['throws'](
+				function () { ES.BinaryXor(0, nonBit); },
+				TypeError
+			);
+			t['throws'](
+				function () { ES.BinaryXor(nonBit, 1); },
+				TypeError
+			);
+		});
+		t.end();
+	});
+
+	test('OrdinaryObjectCreate', function (t) {
+		forEach(v.nonNullPrimitives, function (value) {
+			t['throws'](
+				function () { ES.OrdinaryObjectCreate(value); },
+				TypeError,
+				debug(value) + ' is not null, or an object'
+			);
+		});
+
+		t.test('proto arg', function (st) {
+			var Parent = function Parent() {};
+			Parent.prototype.foo = {};
+			var child = ES.OrdinaryObjectCreate(Parent.prototype);
+			st.equal(child instanceof Parent, true, 'child is instanceof Parent');
+			st.equal(child.foo, Parent.prototype.foo, 'child inherits properties from Parent.prototype');
+
+			st.end();
+		});
+
+		t.test('internal slots arg', function (st) {
+			st.doesNotThrow(function () { ES.OrdinaryObjectCreate({}, []); }, 'an empty slot list is valid');
+
+			st['throws'](
+				function () { ES.OrdinaryObjectCreate({}, ['a']); },
+				SyntaxError,
+				'internal slots are not supported'
+			);
+
+			st.end();
+		});
+
+		t.test('null proto', { skip: !$setProto }, function (st) {
+			st.equal('toString' in {}, true, 'normal objects have toString');
+			st.equal('toString' in ES.OrdinaryObjectCreate(null), false, 'makes a null object');
+
+			st.end();
+		});
+
+		t.test('null proto when no native Object.create', { skip: $setProto }, function (st) {
+			st['throws'](
+				function () { ES.OrdinaryObjectCreate(null); },
+				SyntaxError,
+				'without a native Object.create, can not create null objects'
+			);
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('SameValueNonNumeric', function (t) {
+		var willThrow = [
+			[3, 4],
+			[NaN, 4],
+			[4, ''],
+			['abc', true],
+			[{}, false]
+		];
+		forEach(willThrow, function (nums) {
+			t['throws'](function () { return ES.SameValueNonNumeric.apply(ES, nums); }, TypeError, 'value must be same type and non-number');
+		});
+
+		forEach(v.objects.concat(v.nonNumberPrimitives), function (val) {
+			t.equal(val === val, ES.SameValueNonNumeric(val, val), debug(val) + ' is SameValueNonNumeric to itself');
+		});
+
+		t.end();
+	});
+
+	test('StringPad', function (t) {
+		t.equal(ES.StringPad('a', 3, undefined, 'start'), '  a');
+		t.equal(ES.StringPad('a', 3, undefined, 'end'), 'a  ');
+		t.equal(ES.StringPad('a', 3, '0', 'start'), '00a');
+		t.equal(ES.StringPad('a', 3, '0', 'end'), 'a00');
+		t.equal(ES.StringPad('a', 3, '012', 'start'), '01a');
+		t.equal(ES.StringPad('a', 3, '012', 'end'), 'a01');
+		t.equal(ES.StringPad('a', 7, '012', 'start'), '012012a');
+		t.equal(ES.StringPad('a', 7, '012', 'end'), 'a012012');
+
+		t.end();
+	});
+
+	test('thisBigIntValue', { skip: !hasBigInts }, function (t) {
+		t.equal(ES.thisBigIntValue(BigInt(42)), BigInt(42));
+		t.equal(ES.thisBigIntValue(Object(BigInt(42))), BigInt(42));
+
+		forEach(v.nonBigInts, function (nonBigInt) {
+			t['throws'](
+				function () { ES.thisBigIntValue(nonBigInt); },
+				TypeError,
+				debug(nonBigInt) + ' is not a BigInt'
+			);
+		});
+
+		t.end();
+	});
+
+	test('CodePointAt', function (t) {
+		t['throws'](
+			function () { ES.CodePointAt('abc', -1); },
+			TypeError,
+			'requires an index >= 0'
+		);
+		t['throws'](
+			function () { ES.CodePointAt('abc', 3); },
+			TypeError,
+			'requires an index < string length'
+		);
+
+		t.deepEqual(ES.CodePointAt('abc', 0), {
+			'[[CodePoint]]': 'a',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+		t.deepEqual(ES.CodePointAt('abc', 1), {
+			'[[CodePoint]]': 'b',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+		t.deepEqual(ES.CodePointAt('abc', 2), {
+			'[[CodePoint]]': 'c',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+
+		var strWithHalfPoo = 'a' + leadingPoo + 'c';
+		var strWithWholePoo = 'a' + wholePoo + 'd';
+
+		t.deepEqual(ES.CodePointAt(strWithHalfPoo, 0), {
+			'[[CodePoint]]': 'a',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+		t.deepEqual(ES.CodePointAt(strWithHalfPoo, 1), {
+			'[[CodePoint]]': leadingPoo,
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': true
+		});
+		t.deepEqual(ES.CodePointAt(strWithHalfPoo, 2), {
+			'[[CodePoint]]': 'c',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+
+		t.deepEqual(ES.CodePointAt(strWithWholePoo, 0), {
+			'[[CodePoint]]': 'a',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+		t.deepEqual(ES.CodePointAt(strWithWholePoo, 1), {
+			'[[CodePoint]]': wholePoo,
+			'[[CodeUnitCount]]': 2,
+			'[[IsUnpairedSurrogate]]': false
+		});
+		t.deepEqual(ES.CodePointAt(strWithWholePoo, 2), {
+			'[[CodePoint]]': trailingPoo,
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': true
+		});
+		t.deepEqual(ES.CodePointAt(strWithWholePoo, 3), {
+			'[[CodePoint]]': 'd',
+			'[[CodeUnitCount]]': 1,
+			'[[IsUnpairedSurrogate]]': false
+		});
+
+		t.end();
+	});
+
+	test('UTF16DecodeSurrogatePair', function (t) {
+		t['throws'](
+			function () { ES.UTF16DecodeSurrogatePair('a'.charCodeAt(0), trailingPoo.charCodeAt(0)); },
+			TypeError,
+			'"a" is not a leading surrogate'
+		);
+		t['throws'](
+			function () { ES.UTF16DecodeSurrogatePair(leadingPoo.charCodeAt(0), 'b'.charCodeAt(0)); },
+			TypeError,
+			'"b" is not a trailing surrogate'
+		);
+
+		t.equal(ES.UTF16DecodeSurrogatePair(leadingPoo.charCodeAt(0), trailingPoo.charCodeAt(0)), wholePoo);
+
+		t.end();
+	});
+
+	test('LengthOfArrayLike', function (t) {
+		forEach(v.primitives, function (primitive) {
+			t['throws'](
+				function () { ES.LengthOfArrayLike(primitive); },
+				TypeError,
+				debug(primitive) + ' is not an Object'
+			);
+		});
+
+		t.equal(ES.LengthOfArrayLike([]), 0);
+		t.equal(ES.LengthOfArrayLike([1]), 1);
+		t.equal(ES.LengthOfArrayLike({ length: 42 }), 42);
+
+		t.end();
+	});
+
+	test('IsNonNegativeInteger', function (t) {
+		forEach(v.nonNumbers, function (nonNumber) {
+			t.equal(
+				ES.IsNonNegativeInteger(nonNumber),
+				false,
+				debug(nonNumber) + ' is not a non-negative integer'
+			);
+		});
+
+		forEach(v.nonIntegerNumbers, function (nonIntegerNumber) {
+			t.equal(
+				ES.IsNonNegativeInteger(nonIntegerNumber),
+				false,
+				debug(nonIntegerNumber) + ' is not a non-negative integer'
+			);
+		});
+
+		forEach(v.zeroes.concat(v.integerNumbers), function (nonNegativeInteger) {
+			t.equal(
+				ES.IsNonNegativeInteger(nonNegativeInteger),
+				true,
+				debug(nonNegativeInteger) + ' is a non-negative integer'
+			);
+		});
+
+		t.end();
+	});
+
+	var unclampedUnsignedIntegerTypes = [
+		'Int8',
+		'Int16',
+		'Int32'
+	];
+	var clampedTypes = [
+		'Uint8C'
+	];
+	var unclampedSignedIntegerTypes = [
+		'Uint8',
+		'Uint16',
+		'Uint32'
+	];
+	var unclampedIntegerTypes = unclampedUnsignedIntegerTypes.concat(unclampedSignedIntegerTypes);
+	var floatTypes = [
+		'Float32',
+		'Float64'
+	];
+	var integerTypes = unclampedIntegerTypes.concat(clampedTypes, floatTypes);
+	var bigIntTypes = [
+		'BigInt64',
+		'BigUint64'
+	];
+	var numberTypes = floatTypes.concat(integerTypes);
+	var nonIntegerTypes = floatTypes.concat(bigIntTypes);
+	var unsignedElementTypes = unclampedSignedIntegerTypes.concat([
+		'BigUint64'
+	]);
+	var signedElementTypes = unclampedUnsignedIntegerTypes;
+
+	test('IsBigIntElementType', function (t) {
+		forEach(bigIntTypes, function (type) {
+			t.equal(
+				ES.IsBigIntElementType(type),
+				true,
+				debug(type) + ' is a BigInt element type'
+			);
+		});
+
+		forEach(numberTypes, function (type) {
+			t.equal(
+				ES.IsBigIntElementType(type),
+				false,
+				debug(type) + ' is not a BigInt element type'
+			);
+		});
+
+		t.end();
+	});
+
+	test('IsUnsignedElementType', function (t) {
+		forEach(unsignedElementTypes, function (type) {
+			t.equal(
+				ES.IsUnsignedElementType(type),
+				true,
+				debug(type) + ' is an unsigned element type'
+			);
+		});
+
+		forEach(signedElementTypes, function (type) {
+			t.equal(
+				ES.IsUnsignedElementType(type),
+				false,
+				debug(type) + ' is not an unsigned element type'
+			);
+		});
+
+		t.end();
+	});
+
+	test('IsUnclampedIntegerElementType', function (t) {
+		forEach(unclampedIntegerTypes, function (type) {
+			t.equal(
+				ES.IsUnclampedIntegerElementType(type),
+				true,
+				debug(type) + ' is an unclamped integer element type'
+			);
+		});
+
+		forEach(clampedTypes.concat(nonIntegerTypes), function (type) {
+			t.equal(
+				ES.IsUnclampedIntegerElementType(type),
+				false,
+				debug(type) + ' is not an unclamped integer element type'
+			);
+		});
+
+		t.end();
+	});
+
+	test('IsNoTearConfiguration', function (t) {
+		forEach(unclampedIntegerTypes, function (type) {
+			t.equal(
+				ES.IsNoTearConfiguration(type),
+				true,
+				debug(type) + ' with any order is a no-tear configuration'
+			);
+		});
+
+		forEach(bigIntTypes, function (type) {
+			t.equal(
+				ES.IsNoTearConfiguration(type, 'Init'),
+				false,
+				debug(type) + ' with ' + debug('Init') + ' is not a no-tear configuration'
+			);
+
+			t.equal(
+				ES.IsNoTearConfiguration(type, 'Unordered'),
+				false,
+				debug(type) + ' with ' + debug('Unordered') + ' is not a no-tear configuration'
+			);
+
+			t.equal(
+				ES.IsNoTearConfiguration(type),
+				true,
+				debug(type) + ' with any other order is a no-tear configuration'
+			);
+		});
+
+		forEach(clampedTypes, function (type) {
+			t.equal(
+				ES.IsNoTearConfiguration(type),
+				false,
+				debug(type) + ' with any order is not a no-tear configuration'
+			);
+		});
+
+		t.end();
+	});
+
+	test('NumberBitwiseOp', function (t) {
+		t['throws'](
+			function () { ES.NumberBitwiseOp('invalid', 0, 0); },
+			TypeError,
+			'throws with an invalid op'
+		);
+
+		t.equal(ES.NumberBitwiseOp('&', 1, 2), 1 & 2);
+		t.equal(ES.NumberBitwiseOp('|', 1, 2), 1 | 2);
+		t.equal(ES.NumberBitwiseOp('^', 1, 2), 1 ^ 2);
+
+		t.end();
+	});
+
+	test('ToNumeric', function (t) {
+		testToNumber(t, ES, ES.ToNumeric);
+
+		t.test('BigInts', { skip: !hasBigInts }, function (st) {
+			st.equal(ES.ToNumeric(BigInt(42)), BigInt(42), debug(BigInt(42)) + ' is ' + debug(BigInt(42)));
+			st.equal(ES.ToNumeric(Object(BigInt(42))), BigInt(42), debug(Object(BigInt(42))) + ' is ' + debug(BigInt(42)));
+
+			var valueOf = { valueOf: function () { return BigInt(7); } };
+			st.equal(ES.ToNumeric(valueOf), valueOf.valueOf(), debug(valueOf) + ' is ' + debug(valueOf.valueOf()));
+
+			var toPrimitive = {};
+			var value = BigInt(-2);
+			toPrimitive[Symbol.toPrimitive] = function () { return value; };
+			st.equal(ES.ToNumeric(toPrimitive), value, debug(toPrimitive) + ' is ' + debug(value));
+
+			st.end();
+		});
+
+		t.end();
+	});
+
+	test('UTF16DecodeString', function (t) {
+		forEach(v.nonStrings, function (nonString) {
+			t['throws'](
+				function () { ES.UTF16DecodeString(nonString); },
+				TypeError,
+				debug(nonString) + ' is not a String'
+			);
+		});
+
+		t.deepEqual(ES.UTF16DecodeString('abc'), ['a', 'b', 'c'], 'code units get split');
+		t.deepEqual(ES.UTF16DecodeString('a' + wholePoo + 'c'), ['a', wholePoo, 'c'], 'code points get split too');
+
+		t.end();
+	});
+
+	test('BigIntBitwiseOp', { skip: !hasBigInts }, function (t) {
+		t['throws'](
+			function () { ES.BigIntBitwiseOp('invalid', BigInt(0), BigInt(0)); },
+			TypeError,
+			'throws with an invalid op'
+		);
+
+		t.equal(ES.BigIntBitwiseOp('&', BigInt(1), BigInt(2)), BigInt(1) & BigInt(2));
+		t.equal(ES.BigIntBitwiseOp('|', BigInt(1), BigInt(2)), BigInt(1) | BigInt(2));
+		t.equal(ES.BigIntBitwiseOp('^', BigInt(1), BigInt(2)), BigInt(1) ^ BigInt(2));
+
+		t.end();
+	});
+};
+
+module.exports = {
+	es2015: es2015,
+	es2016: es2016,
+	es2017: es2017,
+	es2018: es2018,
+	es2019: es2019,
+	es2020: es2020
+};