init

node_modules/es-abstract/2024/AddValueToKeyedGroup.js

@@ -0,0 +1,47 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var callBound = require('call-bind/callBound');
+
+var $push = callBound('Array.prototype.push');
+
+var SameValue = require('./SameValue');
+
+var IsArray = require('../helpers/IsArray');
+var every = require('../helpers/every');
+var forEach = require('../helpers/forEach');
+
+var hasOwn = require('hasown');
+
+var isKeyedGroup = function (group) {
+	return hasOwn(group, '[[Key]]')
+        && hasOwn(group, '[[Elements]]')
+        && IsArray(group['[[Elements]]']);
+};
+
+// https://262.ecma-international.org/15.0/#sec-add-value-to-keyed-group
+
+module.exports = function AddValueToKeyedGroup(groups, key, value) {
+	if (!IsArray(groups) || (groups.length > 0 && !every(groups, isKeyedGroup))) {
+		throw new $TypeError('Assertion failed: `groups` must be a List of Records with [[Key]] and [[Elements]]');
+	}
+
+	var matched = 0;
+	forEach(groups, function (g) { // step 1
+		if (SameValue(g['[[Key]]'], key)) { // step 2
+			matched += 1;
+			if (matched > 1) {
+				throw new $TypeError('Assertion failed: Exactly one element of groups meets this criterion'); // step 2.a
+			}
+
+			$push(g['[[Elements]]'], value); // step 2.b
+		}
+	});
+
+	if (matched === 0) {
+		var group = { '[[Key]]': key, '[[Elements]]': [value] }; // step 2
+
+		$push(groups, group); // step 3
+	}
+};

node_modules/es-abstract/2024/ArrayBufferByteLength.js

@@ -0,0 +1,38 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+// https://262.ecma-international.org/15.0/#sec-arraybufferbytelength
+
+var IsDetachedBuffer = require('./IsDetachedBuffer');
+
+var isArrayBuffer = require('is-array-buffer');
+var isSharedArrayBuffer = require('is-shared-array-buffer');
+var arrayBufferByteLength = require('array-buffer-byte-length');
+
+var isGrowable = false; // TODO: support this
+
+module.exports = function ArrayBufferByteLength(arrayBuffer, order) {
+	var isSAB = isSharedArrayBuffer(arrayBuffer);
+	if (!isArrayBuffer(arrayBuffer) && !isSAB) {
+		throw new $TypeError('Assertion failed: `arrayBuffer` must be an ArrayBuffer or a SharedArrayBuffer');
+	}
+	if (order !== 'SEQ-CST' && order !== 'UNORDERED') {
+		throw new $TypeError('Assertion failed: `order` must be ~SEQ-CST~ or ~UNORDERED~');
+	}
+
+	// 1. If IsSharedArrayBuffer(arrayBuffer) is true and arrayBuffer has an [[ArrayBufferByteLengthData]] internal slot, then
+	// TODO: see if IsFixedLengthArrayBuffer can be used here in the spec instead
+	if (isSAB && isGrowable) { // step 1
+		// a. Let bufferByteLengthBlock be arrayBuffer.[[ArrayBufferByteLengthData]].
+		// b. Let rawLength be GetRawBytesFromSharedBlock(bufferByteLengthBlock, 0, BIGUINT64, true, order).
+		// c. Let isLittleEndian be the value of the [[LittleEndian]] field of the surrounding agent's Agent Record.
+		// d. Return ℝ(RawBytesToNumeric(BIGUINT64, rawLength, isLittleEndian)).
+	}
+
+	if (IsDetachedBuffer(arrayBuffer)) {
+		throw new $TypeError('Assertion failed: `arrayBuffer` must not be detached'); // step 2
+	}
+
+	return arrayBufferByteLength(arrayBuffer);
+};

node_modules/es-abstract/2024/AsyncIteratorClose.js

@@ -0,0 +1,70 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $SyntaxError = require('es-errors/syntax');
+var $TypeError = require('es-errors/type');
+var $Promise = GetIntrinsic('%Promise%', true);
+
+var Call = require('./Call');
+var CompletionRecord = require('./CompletionRecord');
+var GetMethod = require('./GetMethod');
+var Type = require('./Type');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+var callBound = require('call-bind/callBound');
+
+var $then = callBound('Promise.prototype.then', true);
+
+// https://262.ecma-international.org/15.0/#sec-asynciteratorclose
+
+module.exports = function AsyncIteratorClose(iteratorRecord, completion) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
+	}
+
+	if (!(completion instanceof CompletionRecord)) {
+		throw new $TypeError('Assertion failed: completion is not a Completion Record instance'); // step 2
+	}
+
+	if (!$then) {
+		throw new $SyntaxError('This environment does not support Promises.');
+	}
+
+	var iterator = iteratorRecord['[[Iterator]]']; // step 3
+
+	return $then(
+		$then(
+			$then(
+				new $Promise(function (resolve) {
+					resolve(GetMethod(iterator, 'return')); // step 4
+					// resolve(Call(ret, iterator, [])); // step 6
+				}),
+				function (returnV) { // step 5.a
+					if (typeof returnV === 'undefined') {
+						return completion; // step 5.b
+					}
+					return Call(returnV, iterator); // step 5.c, 5.d.
+				}
+			),
+			null,
+			function (e) {
+				if (completion.type() === 'throw') {
+					completion['?'](); // step 6
+				} else {
+					throw e; // step 7
+				}
+			}
+		),
+		function (innerResult) { // step 8
+			if (completion.type() === 'throw') {
+				completion['?'](); // step 6
+			}
+			if (Type(innerResult) !== 'Object') {
+				throw new $TypeError('`innerResult` must be an Object'); // step 10
+			}
+			return completion;
+		}
+	);
+};

node_modules/es-abstract/2024/CreateAsyncFromSyncIterator.js

@@ -0,0 +1,137 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $SyntaxError = require('es-errors/syntax');
+var $TypeError = require('es-errors/type');
+var $Promise = GetIntrinsic('%Promise%', true);
+
+var AsyncFromSyncIteratorContinuation = require('./AsyncFromSyncIteratorContinuation');
+var Call = require('./Call');
+var CreateIterResultObject = require('./CreateIterResultObject');
+var Get = require('./Get');
+var GetMethod = require('./GetMethod');
+var IteratorNext = require('./IteratorNext');
+var OrdinaryObjectCreate = require('./OrdinaryObjectCreate');
+var Type = require('./Type');
+
+var SLOT = require('internal-slot');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+var $AsyncFromSyncIteratorPrototype = GetIntrinsic('%AsyncFromSyncIteratorPrototype%', true) || {
+	next: function next(value) {
+		if (!$Promise) {
+			throw new $SyntaxError('This environment does not support Promises.');
+		}
+
+		var O = this; // step 1
+
+		SLOT.assert(O, '[[SyncIteratorRecord]]'); // step 2
+
+		var argsLength = arguments.length;
+
+		return new $Promise(function (resolve) { // step 3
+			var syncIteratorRecord = SLOT.get(O, '[[SyncIteratorRecord]]'); // step 4
+			var result;
+			if (argsLength > 0) {
+				result = IteratorNext(syncIteratorRecord, value); // step 5.a
+			} else { // step 6
+				result = IteratorNext(syncIteratorRecord);// step 6.a
+			}
+			resolve(AsyncFromSyncIteratorContinuation(result)); // step 8
+		});
+	},
+	'return': function () {
+		if (!$Promise) {
+			throw new $SyntaxError('This environment does not support Promises.');
+		}
+
+		var O = this; // step 1
+
+		SLOT.assert(O, '[[SyncIteratorRecord]]'); // step 2
+
+		var valueIsPresent = arguments.length > 0;
+		var value = valueIsPresent ? arguments[0] : void undefined;
+
+		return new $Promise(function (resolve, reject) { // step 3
+			var syncIterator = SLOT.get(O, '[[SyncIteratorRecord]]')['[[Iterator]]']; // step 4
+			var iteratorReturn = GetMethod(syncIterator, 'return'); // step 5
+
+			if (typeof iteratorReturn === 'undefined') { // step 7
+				var iterResult = CreateIterResultObject(value, true); // step 7.a
+				Call(resolve, undefined, [iterResult]); // step 7.b
+				return;
+			}
+			var result;
+			if (valueIsPresent) { // step 8
+				result = Call(iteratorReturn, syncIterator, [value]); // step 8.a
+			} else { // step 9
+				result = Call(iteratorReturn, syncIterator); // step 9.a
+			}
+			if (Type(result) !== 'Object') { // step 11
+				Call(reject, undefined, [new $TypeError('Iterator `return` method returned a non-object value.')]); // step 11.a
+				return;
+			}
+
+			resolve(AsyncFromSyncIteratorContinuation(result)); // step 12
+		});
+	},
+	'throw': function () {
+		if (!$Promise) {
+			throw new $SyntaxError('This environment does not support Promises.');
+		}
+
+		var O = this; // step 1
+
+		SLOT.assert(O, '[[SyncIteratorRecord]]'); // step 2
+
+		var valueIsPresent = arguments.length > 0;
+		var value = valueIsPresent ? arguments[0] : void undefined;
+
+		return new $Promise(function (resolve, reject) { // step 3
+			var syncIterator = SLOT.get(O, '[[SyncIteratorRecord]]')['[[Iterator]]']; // step 4
+
+			var throwMethod = GetMethod(syncIterator, 'throw'); // step 5
+
+			if (typeof throwMethod === 'undefined') { // step 7
+				Call(reject, undefined, [value]); // step 7.a
+				return;
+			}
+
+			var result;
+			if (valueIsPresent) { // step 8
+				result = Call(throwMethod, syncIterator, [value]); // step 8.a
+			} else { // step 9
+				result = Call(throwMethod, syncIterator); // step 9.a
+			}
+			if (Type(result) !== 'Object') { // step 11
+				Call(reject, undefined, [new $TypeError('Iterator `throw` method returned a non-object value.')]); // step 11.a
+				return;
+			}
+
+			resolve(AsyncFromSyncIteratorContinuation(result/* , promiseCapability */)); // step 12
+		});
+	}
+};
+
+// https://262.ecma-international.org/15.0/#sec-createasyncfromsynciterator
+
+module.exports = function CreateAsyncFromSyncIterator(syncIteratorRecord) {
+	if (!isIteratorRecord(syncIteratorRecord)) {
+		throw new $TypeError('Assertion failed: `syncIteratorRecord` must be an Iterator Record');
+	}
+
+	// var asyncIterator = OrdinaryObjectCreate(%AsyncFromSyncIteratorPrototype%, « [[SyncIteratorRecord]] »); // step 1
+	var asyncIterator = OrdinaryObjectCreate($AsyncFromSyncIteratorPrototype);
+
+	SLOT.set(asyncIterator, '[[SyncIteratorRecord]]', syncIteratorRecord); // step 2
+
+	var nextMethod = Get(asyncIterator, 'next'); // step 3
+
+	return { // steps 3-4
+		'[[Iterator]]': asyncIterator,
+		'[[NextMethod]]': nextMethod,
+		'[[Done]]': false
+	};
+};

node_modules/es-abstract/2024/GetArrayBufferMaxByteLengthOption.js

@@ -0,0 +1,21 @@
+'use strict';
+
+var Get = require('./Get');
+var ToIndex = require('./ToIndex');
+var Type = require('./Type');
+
+// https://262.ecma-international.org/15.0/#sec-getarraybuffermaxbytelengthoption
+
+module.exports = function GetArrayBufferMaxByteLengthOption(options) {
+	if (Type(options) !== 'Object') {
+		return 'EMPTY'; // step 1
+	}
+
+	var maxByteLength = Get(options, 'maxByteLength'); // step 2
+
+	if (typeof maxByteLength === 'undefined') {
+		return 'EMPTY'; // step 3
+	}
+
+	return ToIndex(maxByteLength); // step 4
+};

node_modules/es-abstract/2024/GroupBy.js

@@ -0,0 +1,77 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var AddValueToKeyedGroup = require('./AddValueToKeyedGroup');
+var Call = require('./Call');
+var GetIterator = require('./GetIterator');
+var IsCallable = require('./IsCallable');
+var IteratorClose = require('./IteratorClose');
+var IteratorStep = require('./IteratorStep');
+var IteratorValue = require('./IteratorValue');
+var RequireObjectCoercible = require('./RequireObjectCoercible');
+var ThrowCompletion = require('./ThrowCompletion');
+var ToPropertyKey = require('./ToPropertyKey');
+
+var isNegativeZero = require('../helpers/isNegativeZero');
+var maxSafeInteger = require('../helpers/maxSafeInteger');
+
+// https://262.ecma-international.org/15.0/#sec-groupby
+
+module.exports = function GroupBy(items, callbackfn, keyCoercion) {
+	if (keyCoercion !== 'PROPERTY' && keyCoercion !== 'ZERO') {
+		throw new $TypeError('Assertion failed: `keyCoercion` must be `"PROPERTY"` or `"ZERO"`');
+	}
+
+	RequireObjectCoercible(items); // step 1
+
+	if (!IsCallable(callbackfn)) {
+		throw new $TypeError('callbackfn must be callable'); // step 2
+	}
+
+	var groups = []; // step 3
+
+	var iteratorRecord = GetIterator(items, 'SYNC'); // step 4
+
+	var k = 0; // step 5
+
+	// eslint-disable-next-line no-constant-condition
+	while (true) { // step 6
+		if (k >= maxSafeInteger) { // step 6.a
+			var error = ThrowCompletion(new $TypeError('k must be less than 2 ** 53 - 1')); // step 6.a.i
+			return IteratorClose(iteratorRecord, error); // step 6.a.ii
+		}
+		var next = IteratorStep(iteratorRecord); // step 6.b
+		if (!next) { // step 6.c
+			return groups; // step 6.c.i
+		}
+
+		var value = IteratorValue(next); // step 6.dv
+
+		var key;
+		try {
+			key = Call(callbackfn, undefined, [value, k]); // step 6.e
+		} catch (e) {
+			return IteratorClose(iteratorRecord, ThrowCompletion(e)); // step 6.f
+		}
+
+		if (keyCoercion === 'PROPERTY') { // step 6.g
+			try {
+				key = ToPropertyKey(key); // step 6.g.i
+			} catch (e) {
+				return IteratorClose(iteratorRecord, ThrowCompletion(e)); // step 6.g.ii
+			}
+		} else { // step 6.h
+			if (keyCoercion !== 'ZERO') {
+				throw new $TypeError('keyCoercion must be ~PROPERTY~ or ~ZERO~'); // step 6.h.i
+			}
+			if (isNegativeZero(key)) {
+				key = +0; // step 6.h.ii
+			}
+		}
+
+		AddValueToKeyedGroup(groups, key, value); // step 6.i
+
+		k += 1; // step 6.j
+	}
+};

node_modules/es-abstract/2024/IsTypedArrayOutOfBounds.js

@@ -0,0 +1,54 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var IsDetachedBuffer = require('./IsDetachedBuffer');
+var TypedArrayElementSize = require('./TypedArrayElementSize');
+
+var isTypedArrayWithBufferWitnessRecord = require('../helpers/records/typed-array-with-buffer-witness-record');
+
+var typedArrayBuffer = require('typed-array-buffer');
+var typedArrayByteOffset = require('typed-array-byte-offset');
+var typedArrayLength = require('typed-array-length');
+
+// https://262.ecma-international.org/15.0/#sec-istypedarrayoutofbounds
+
+module.exports = function IsTypedArrayOutOfBounds(taRecord) {
+	if (!isTypedArrayWithBufferWitnessRecord(taRecord)) {
+		throw new $TypeError('Assertion failed: `taRecord` must be a TypedArray With Buffer Witness Record');
+	}
+
+	var O = taRecord['[[Object]]']; // step 1
+
+	var bufferByteLength = taRecord['[[CachedBufferByteLength]]']; // step 2
+
+	if (IsDetachedBuffer(typedArrayBuffer(O)) && bufferByteLength !== 'DETACHED') {
+		throw new $TypeError('Assertion failed: typed array is detached only if the byte length is ~DETACHED~'); // step 3
+	}
+
+	if (bufferByteLength === 'DETACHED') {
+		return true; // step 4
+	}
+
+	var byteOffsetStart = typedArrayByteOffset(O); // step 5
+
+	var byteOffsetEnd;
+	var length = typedArrayLength(O);
+	// TODO: probably use package for array length
+	// seems to apply when TA is backed by a resizable/growable AB
+	if (length === 'AUTO') { // step 6
+		byteOffsetEnd = bufferByteLength; // step 6.a
+	} else {
+		var elementSize = TypedArrayElementSize(O); // step 7.a
+
+		byteOffsetEnd = byteOffsetStart + (length * elementSize); // step 7.b
+	}
+
+	if (byteOffsetStart > bufferByteLength || byteOffsetEnd > bufferByteLength) {
+		return true; // step 8
+	}
+
+	// 9. NOTE: 0-length TypedArrays are not considered out-of-bounds.
+
+	return false; // step 10
+};

node_modules/es-abstract/2024/IteratorClose.js

@@ -0,0 +1,62 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var Call = require('./Call');
+var CompletionRecord = require('./CompletionRecord');
+var GetMethod = require('./GetMethod');
+var IsCallable = require('./IsCallable');
+var Type = require('./Type');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+// https://262.ecma-international.org/15.0/#sec-iteratorclose
+
+module.exports = function IteratorClose(iteratorRecord, completion) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
+	}
+	if (Type(iteratorRecord['[[Iterator]]']) !== 'Object') {
+		throw new $TypeError('Assertion failed: iteratorRecord.[[Iterator]] must be an Object'); // step 1
+	}
+
+	if (!IsCallable(completion) && !(completion instanceof CompletionRecord)) { // step 2
+		throw new $TypeError('Assertion failed: completion is not a thunk representing a Completion Record, nor a Completion Record instance');
+	}
+	var completionThunk = completion instanceof CompletionRecord ? function () { return completion['?'](); } : completion;
+
+	var iterator = iteratorRecord['[[Iterator]]']; // step 3
+
+	var iteratorReturn;
+	try {
+		iteratorReturn = GetMethod(iterator, 'return'); // step 4
+	} catch (e) {
+		completionThunk(); // throws if `completion` is a throw completion // step 6
+		completionThunk = null; // ensure it's not called twice.
+		throw e; // step 7
+	}
+	if (typeof iteratorReturn === 'undefined') {
+		return completionThunk(); // step 5.a - 5.b
+	}
+
+	var innerResult;
+	try {
+		innerResult = Call(iteratorReturn, iterator, []);
+	} catch (e) {
+		// if we hit here, then "e" is the innerResult completion that needs re-throwing
+
+		completionThunk(); // throws if `completion` is a throw completion // step 6
+		completionThunk = null; // ensure it's not called twice.
+
+		// if not, then return the innerResult completion
+		throw e; // step 7
+	}
+	var completionRecord = completionThunk(); // if innerResult worked, then throw if the completion does
+	completionThunk = null; // ensure it's not called twice.
+
+	if (Type(innerResult) !== 'Object') {
+		throw new $TypeError('iterator .return must return an object');
+	}
+
+	return completionRecord;
+};

node_modules/es-abstract/2024/IteratorNext.js

@@ -0,0 +1,28 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var Call = require('./Call');
+var Type = require('./Type');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+// https://262.ecma-international.org/15.0/#sec-iteratornext
+
+module.exports = function IteratorNext(iteratorRecord) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
+	}
+
+	var result;
+	if (arguments.length < 2) { // step 1
+		result = Call(iteratorRecord['[[NextMethod]]'], iteratorRecord['[[Iterator]]']); // step 1.a
+	} else { // step 2
+		result = Call(iteratorRecord['[[NextMethod]]'], iteratorRecord['[[Iterator]]'], [arguments[1]]); // step 2.a
+	}
+
+	if (Type(result) !== 'Object') {
+		throw new $TypeError('iterator next must return an object'); // step 3
+	}
+	return result; // step 4
+};

node_modules/es-abstract/2024/IteratorStep.js

@@ -0,0 +1,21 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var IteratorComplete = require('./IteratorComplete');
+var IteratorNext = require('./IteratorNext');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+// https://262.ecma-international.org/15.0/#sec-iteratorstep
+
+module.exports = function IteratorStep(iteratorRecord) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
+	}
+
+	var result = IteratorNext(iteratorRecord); // step 1
+	var done = IteratorComplete(result); // step 2
+	return done === true ? false : result; // steps 3-4
+};
+

node_modules/es-abstract/2024/IteratorToList.js

@@ -0,0 +1,31 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var callBound = require('call-bind/callBound');
+
+var $arrayPush = callBound('Array.prototype.push');
+
+var IteratorStep = require('./IteratorStep');
+var IteratorValue = require('./IteratorValue');
+
+var isIteratorRecord = require('../helpers/records/iterator-record');
+
+// https://262.ecma-international.org/15.0/#sec-iteratortolist
+
+module.exports = function IteratorToList(iteratorRecord) {
+	if (!isIteratorRecord(iteratorRecord)) {
+		throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
+	}
+
+	var values = []; // step 1
+	var next = true; // step 2
+	while (next) { // step 3
+		next = IteratorStep(iteratorRecord); // step 3.a
+		if (next) {
+			var nextValue = IteratorValue(next); // step 3.b.i
+			$arrayPush(values, nextValue); // step 3.b.ii
+		}
+	}
+	return values; // step 4
+};

node_modules/es-abstract/2024/MakeTypedArrayWithBufferWitnessRecord.js

@@ -0,0 +1,26 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var ArrayBufferByteLength = require('./ArrayBufferByteLength');
+var IsDetachedBuffer = require('./IsDetachedBuffer');
+
+var isTypedArray = require('is-typed-array');
+var typedArrayBuffer = require('typed-array-buffer');
+
+// https://262.ecma-international.org/15.0/#sec-maketypedarraywithbufferwitnessrecord
+
+module.exports = function MakeTypedArrayWithBufferWitnessRecord(obj, order) {
+	if (!isTypedArray(obj)) {
+		throw new $TypeError('Assertion failed: `obj` must be a Typed Array');
+	}
+	if (order !== 'SEQ-CST' && order !== 'UNORDERED') {
+		throw new $TypeError('Assertion failed: `order` must be ~SEQ-CST~ or ~UNORDERED~');
+	}
+
+	var buffer = typedArrayBuffer(obj); // step 1
+
+	var byteLength = IsDetachedBuffer(buffer) ? 'DETACHED' : ArrayBufferByteLength(buffer, order); // steps 2 - 3
+
+	return { '[[Object]]': obj, '[[CachedBufferByteLength]]': byteLength }; // step 4
+};

node_modules/es-abstract/2024/TypedArrayByteLength.js

@@ -0,0 +1,39 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var IsTypedArrayOutOfBounds = require('./IsTypedArrayOutOfBounds');
+var TypedArrayElementSize = require('./TypedArrayElementSize');
+var TypedArrayLength = require('./TypedArrayLength');
+
+var isTypedArrayWithBufferWitnessRecord = require('../helpers/records/typed-array-with-buffer-witness-record');
+
+var typedArrayByteLength = require('typed-array-byte-length');
+
+// https://262.ecma-international.org/15.0/#sec-typedarraybytelength
+
+module.exports = function TypedArrayByteLength(taRecord) {
+	if (!isTypedArrayWithBufferWitnessRecord(taRecord)) {
+		throw new $TypeError('Assertion failed: `taRecord` must be a TypedArray With Buffer Witness Record');
+	}
+
+	if (IsTypedArrayOutOfBounds(taRecord)) {
+		return 0; // step 1
+	}
+	var length = TypedArrayLength(taRecord); // step 2
+
+	if (length === 0) {
+		return 0; // step 3
+	}
+
+	var O = taRecord['[[Object]]']; // step 4
+
+	var byteLength = typedArrayByteLength(O);
+	if (byteLength !== 'AUTO') {
+		return byteLength; // step 5
+	}
+
+	var elementSize = TypedArrayElementSize(O); // step 6
+
+	return length * elementSize; // step 7
+};