Index: frontend/node_modules/es-abstract/es2021.js
===================================================================
--- frontend/node_modules/es-abstract/es2021.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/es-abstract/es2021.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,211 @@
+'use strict';
+
+/* eslint global-require: 0 */
+// https://262.ecma-international.org/12.0/#sec-abstract-operations
+var ES2021 = {
+	'Abstract Equality Comparison': require('./2021/AbstractEqualityComparison'),
+	'Abstract Relational Comparison': require('./2021/AbstractRelationalComparison'),
+	'Strict Equality Comparison': require('./2021/StrictEqualityComparison'),
+	abs: require('./2021/abs'),
+	AddEntriesFromIterable: require('./2021/AddEntriesFromIterable'),
+	AddToKeptObjects: require('./2021/AddToKeptObjects'),
+	AdvanceStringIndex: require('./2021/AdvanceStringIndex'),
+	ApplyStringOrNumericBinaryOperator: require('./2021/ApplyStringOrNumericBinaryOperator'),
+	ArrayCreate: require('./2021/ArrayCreate'),
+	ArraySetLength: require('./2021/ArraySetLength'),
+	ArraySpeciesCreate: require('./2021/ArraySpeciesCreate'),
+	AsyncFromSyncIteratorContinuation: require('./2021/AsyncFromSyncIteratorContinuation'),
+	AsyncIteratorClose: require('./2021/AsyncIteratorClose'),
+	BigInt: require('./2021/BigInt'),
+	BigIntBitwiseOp: require('./2021/BigIntBitwiseOp'),
+	BinaryAnd: require('./2021/BinaryAnd'),
+	BinaryOr: require('./2021/BinaryOr'),
+	BinaryXor: require('./2021/BinaryXor'),
+	ByteListBitwiseOp: require('./2021/ByteListBitwiseOp'),
+	ByteListEqual: require('./2021/ByteListEqual'),
+	Call: require('./2021/Call'),
+	Canonicalize: require('./2021/Canonicalize'),
+	CanonicalNumericIndexString: require('./2021/CanonicalNumericIndexString'),
+	CharacterRange: require('./2021/CharacterRange'),
+	clamp: require('./2021/clamp'),
+	ClearKeptObjects: require('./2021/ClearKeptObjects'),
+	CloneArrayBuffer: require('./2021/CloneArrayBuffer'),
+	CodePointAt: require('./2021/CodePointAt'),
+	CodePointsToString: require('./2021/CodePointsToString'),
+	CompletePropertyDescriptor: require('./2021/CompletePropertyDescriptor'),
+	CompletionRecord: require('./2021/CompletionRecord'),
+	CopyDataProperties: require('./2021/CopyDataProperties'),
+	CreateAsyncFromSyncIterator: require('./2021/CreateAsyncFromSyncIterator'),
+	CreateDataProperty: require('./2021/CreateDataProperty'),
+	CreateDataPropertyOrThrow: require('./2021/CreateDataPropertyOrThrow'),
+	CreateHTML: require('./2021/CreateHTML'),
+	CreateIterResultObject: require('./2021/CreateIterResultObject'),
+	CreateListFromArrayLike: require('./2021/CreateListFromArrayLike'),
+	CreateMethodProperty: require('./2021/CreateMethodProperty'),
+	CreateRegExpStringIterator: require('./2021/CreateRegExpStringIterator'),
+	DateFromTime: require('./2021/DateFromTime'),
+	DateString: require('./2021/DateString'),
+	Day: require('./2021/Day'),
+	DayFromYear: require('./2021/DayFromYear'),
+	DaysInYear: require('./2021/DaysInYear'),
+	DayWithinYear: require('./2021/DayWithinYear'),
+	DefinePropertyOrThrow: require('./2021/DefinePropertyOrThrow'),
+	DeletePropertyOrThrow: require('./2021/DeletePropertyOrThrow'),
+	DetachArrayBuffer: require('./2021/DetachArrayBuffer'),
+	EnumerableOwnPropertyNames: require('./2021/EnumerableOwnPropertyNames'),
+	FlattenIntoArray: require('./2021/FlattenIntoArray'),
+	floor: require('./2021/floor'),
+	FromPropertyDescriptor: require('./2021/FromPropertyDescriptor'),
+	Get: require('./2021/Get'),
+	GetGlobalObject: require('./2021/GetGlobalObject'),
+	GetIterator: require('./2021/GetIterator'),
+	GetMethod: require('./2021/GetMethod'),
+	GetOwnPropertyKeys: require('./2021/GetOwnPropertyKeys'),
+	GetPromiseResolve: require('./2021/GetPromiseResolve'),
+	GetPrototypeFromConstructor: require('./2021/GetPrototypeFromConstructor'),
+	GetSubstitution: require('./2021/GetSubstitution'),
+	GetV: require('./2021/GetV'),
+	GetValueFromBuffer: require('./2021/GetValueFromBuffer'),
+	HasOwnProperty: require('./2021/HasOwnProperty'),
+	HasProperty: require('./2021/HasProperty'),
+	HourFromTime: require('./2021/HourFromTime'),
+	InLeapYear: require('./2021/InLeapYear'),
+	InstanceofOperator: require('./2021/InstanceofOperator'),
+	IntegerIndexedElementGet: require('./2021/IntegerIndexedElementGet'),
+	IntegerIndexedElementSet: require('./2021/IntegerIndexedElementSet'),
+	InternalizeJSONProperty: require('./2021/InternalizeJSONProperty'),
+	Invoke: require('./2021/Invoke'),
+	IsAccessorDescriptor: require('./2021/IsAccessorDescriptor'),
+	IsArray: require('./2021/IsArray'),
+	IsBigIntElementType: require('./2021/IsBigIntElementType'),
+	IsCallable: require('./2021/IsCallable'),
+	IsCompatiblePropertyDescriptor: require('./2021/IsCompatiblePropertyDescriptor'),
+	IsConcatSpreadable: require('./2021/IsConcatSpreadable'),
+	IsConstructor: require('./2021/IsConstructor'),
+	IsDataDescriptor: require('./2021/IsDataDescriptor'),
+	IsDetachedBuffer: require('./2021/IsDetachedBuffer'),
+	IsExtensible: require('./2021/IsExtensible'),
+	IsGenericDescriptor: require('./2021/IsGenericDescriptor'),
+	IsIntegralNumber: require('./2021/IsIntegralNumber'),
+	IsNoTearConfiguration: require('./2021/IsNoTearConfiguration'),
+	IsPromise: require('./2021/IsPromise'),
+	IsPropertyKey: require('./2021/IsPropertyKey'),
+	IsRegExp: require('./2021/IsRegExp'),
+	IsSharedArrayBuffer: require('./2021/IsSharedArrayBuffer'),
+	IsStringPrefix: require('./2021/IsStringPrefix'),
+	IsUnclampedIntegerElementType: require('./2021/IsUnclampedIntegerElementType'),
+	IsUnsignedElementType: require('./2021/IsUnsignedElementType'),
+	IsValidIntegerIndex: require('./2021/IsValidIntegerIndex'),
+	IsWordChar: require('./2021/IsWordChar'),
+	IterableToList: require('./2021/IterableToList'),
+	IteratorClose: require('./2021/IteratorClose'),
+	IteratorComplete: require('./2021/IteratorComplete'),
+	IteratorNext: require('./2021/IteratorNext'),
+	IteratorStep: require('./2021/IteratorStep'),
+	IteratorValue: require('./2021/IteratorValue'),
+	LengthOfArrayLike: require('./2021/LengthOfArrayLike'),
+	MakeDate: require('./2021/MakeDate'),
+	MakeDay: require('./2021/MakeDay'),
+	MakeTime: require('./2021/MakeTime'),
+	max: require('./2021/max'),
+	min: require('./2021/min'),
+	MinFromTime: require('./2021/MinFromTime'),
+	modulo: require('./2021/modulo'),
+	MonthFromTime: require('./2021/MonthFromTime'),
+	msFromTime: require('./2021/msFromTime'),
+	NewPromiseCapability: require('./2021/NewPromiseCapability'),
+	NormalCompletion: require('./2021/NormalCompletion'),
+	Number: require('./2021/Number'),
+	NumberBitwiseOp: require('./2021/NumberBitwiseOp'),
+	NumberToBigInt: require('./2021/NumberToBigInt'),
+	NumericToRawBytes: require('./2021/NumericToRawBytes'),
+	ObjectDefineProperties: require('./2021/ObjectDefineProperties'),
+	OrdinaryCreateFromConstructor: require('./2021/OrdinaryCreateFromConstructor'),
+	OrdinaryDefineOwnProperty: require('./2021/OrdinaryDefineOwnProperty'),
+	OrdinaryGetOwnProperty: require('./2021/OrdinaryGetOwnProperty'),
+	OrdinaryGetPrototypeOf: require('./2021/OrdinaryGetPrototypeOf'),
+	OrdinaryHasInstance: require('./2021/OrdinaryHasInstance'),
+	OrdinaryHasProperty: require('./2021/OrdinaryHasProperty'),
+	OrdinaryObjectCreate: require('./2021/OrdinaryObjectCreate'),
+	OrdinarySetPrototypeOf: require('./2021/OrdinarySetPrototypeOf'),
+	OrdinaryToPrimitive: require('./2021/OrdinaryToPrimitive'),
+	PromiseResolve: require('./2021/PromiseResolve'),
+	QuoteJSONString: require('./2021/QuoteJSONString'),
+	RawBytesToNumeric: require('./2021/RawBytesToNumeric'),
+	RegExpCreate: require('./2021/RegExpCreate'),
+	RegExpExec: require('./2021/RegExpExec'),
+	RequireObjectCoercible: require('./2021/RequireObjectCoercible'),
+	SameValue: require('./2021/SameValue'),
+	SameValueNonNumeric: require('./2021/SameValueNonNumeric'),
+	SameValueZero: require('./2021/SameValueZero'),
+	SecFromTime: require('./2021/SecFromTime'),
+	Set: require('./2021/Set'),
+	SetFunctionLength: require('./2021/SetFunctionLength'),
+	SetFunctionName: require('./2021/SetFunctionName'),
+	SetIntegrityLevel: require('./2021/SetIntegrityLevel'),
+	SetTypedArrayFromArrayLike: require('./2021/SetTypedArrayFromArrayLike'),
+	SetTypedArrayFromTypedArray: require('./2021/SetTypedArrayFromTypedArray'),
+	SetValueInBuffer: require('./2021/SetValueInBuffer'),
+	SpeciesConstructor: require('./2021/SpeciesConstructor'),
+	SplitMatch: require('./2021/SplitMatch'),
+	StringCreate: require('./2021/StringCreate'),
+	StringGetOwnProperty: require('./2021/StringGetOwnProperty'),
+	StringIndexOf: require('./2021/StringIndexOf'),
+	StringPad: require('./2021/StringPad'),
+	StringToBigInt: require('./2021/StringToBigInt'),
+	StringToCodePoints: require('./2021/StringToCodePoints'),
+	substring: require('./2021/substring'),
+	SymbolDescriptiveString: require('./2021/SymbolDescriptiveString'),
+	TestIntegrityLevel: require('./2021/TestIntegrityLevel'),
+	thisBigIntValue: require('./2021/thisBigIntValue'),
+	thisBooleanValue: require('./2021/thisBooleanValue'),
+	thisNumberValue: require('./2021/thisNumberValue'),
+	thisStringValue: require('./2021/thisStringValue'),
+	thisSymbolValue: require('./2021/thisSymbolValue'),
+	thisTimeValue: require('./2021/thisTimeValue'),
+	ThrowCompletion: require('./2021/ThrowCompletion'),
+	TimeClip: require('./2021/TimeClip'),
+	TimeFromYear: require('./2021/TimeFromYear'),
+	TimeString: require('./2021/TimeString'),
+	TimeWithinDay: require('./2021/TimeWithinDay'),
+	TimeZoneString: require('./2021/TimeZoneString'),
+	ToBigInt: require('./2021/ToBigInt'),
+	ToBigInt64: require('./2021/ToBigInt64'),
+	ToBigUint64: require('./2021/ToBigUint64'),
+	ToBoolean: require('./2021/ToBoolean'),
+	ToDateString: require('./2021/ToDateString'),
+	ToIndex: require('./2021/ToIndex'),
+	ToInt16: require('./2021/ToInt16'),
+	ToInt32: require('./2021/ToInt32'),
+	ToInt8: require('./2021/ToInt8'),
+	ToIntegerOrInfinity: require('./2021/ToIntegerOrInfinity'),
+	ToLength: require('./2021/ToLength'),
+	ToNumber: require('./2021/ToNumber'),
+	ToNumeric: require('./2021/ToNumeric'),
+	ToObject: require('./2021/ToObject'),
+	ToPrimitive: require('./2021/ToPrimitive'),
+	ToPropertyDescriptor: require('./2021/ToPropertyDescriptor'),
+	ToPropertyKey: require('./2021/ToPropertyKey'),
+	ToString: require('./2021/ToString'),
+	ToUint16: require('./2021/ToUint16'),
+	ToUint32: require('./2021/ToUint32'),
+	ToUint8: require('./2021/ToUint8'),
+	ToUint8Clamp: require('./2021/ToUint8Clamp'),
+	TrimString: require('./2021/TrimString'),
+	Type: require('./2021/Type'),
+	TypedArrayCreate: require('./2021/TypedArrayCreate'),
+	TypedArraySpeciesCreate: require('./2021/TypedArraySpeciesCreate'),
+	UnicodeEscape: require('./2021/UnicodeEscape'),
+	UTF16EncodeCodePoint: require('./2021/UTF16EncodeCodePoint'),
+	UTF16SurrogatePairToCodePoint: require('./2021/UTF16SurrogatePairToCodePoint'),
+	ValidateAndApplyPropertyDescriptor: require('./2021/ValidateAndApplyPropertyDescriptor'),
+	ValidateAtomicAccess: require('./2021/ValidateAtomicAccess'),
+	ValidateIntegerTypedArray: require('./2021/ValidateIntegerTypedArray'),
+	ValidateTypedArray: require('./2021/ValidateTypedArray'),
+	WeakRefDeref: require('./2021/WeakRefDeref'),
+	WeekDay: require('./2021/WeekDay'),
+	WordCharacters: require('./2021/WordCharacters'),
+	YearFromTime: require('./2021/YearFromTime')
+};
+
+module.exports = ES2021;