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apply: ReflectApply,
defineProperty: ReflectDefineProperty,
deleteProperty: ReflectDeleteProperty,
getPrototypeOf: ReflectGetPrototypeOf,
ownKeys: ReflectOwnKeys,
setPrototypeOf: ReflectSetPrototypeOf
} = Reflect;
const ObjectCtor = Object;
const {
assign: ObjectAssign,
freeze: ObjectFreeze,
keys: ObjectKeys,
prototype: ObjectProto
} = ObjectCtor;
const {
hasOwn: OriginalObjectHasOwn
} = ObjectCtor;
const {
__lookupGetter__: ObjectProtoLookupGetter,
__lookupSetter__: ObjectProtoLookupSetter,
hasOwnProperty: ObjectProtoHasOwnProperty
} = ObjectProto;
const ObjectHasOwn = typeof OriginalObjectHasOwn === 'function' ? OriginalObjectHasOwn :
/* istanbul ignore next: currently unreachable via tests */
function ObjectHasOwn(object, key) {
return ReflectApply(ObjectProtoHasOwnProperty, object, [key]);
};
const {
toString: ObjectProtoToString
} = ObjectProto;
function isObject(value) {
return typeof value === 'object' && value !== null;
}
function ObjectLookupOwnGetter(object, key) {
return object === null || object === undefined || !ObjectHasOwn(object, key) ? undefined : ReflectApply(ObjectProtoLookupGetter, object, [key]);
}
function ObjectLookupOwnSetter(object, key) {
return object === null || object === undefined || !ObjectHasOwn(object, key) ? undefined : ReflectApply(ObjectProtoLookupSetter, object, [key]);
}
const SymbolCtor = Symbol;
const {
for: SymbolFor,
iterator: SymbolIterator,
toStringTag: SymbolToStringTag,
unscopables: SymbolUnscopables
} = SymbolCtor;
const {
valueOf: SymbolProtoValueOf
} = SymbolCtor.prototype;
const ArrayCtor = Array;
const {
prototype: ArrayProto
} = ArrayCtor;
const {
at: ArrayProtoAt,
concat: ArrayProtoConcat,
copyWithin: ArrayProtoCopyWithin,
entries: ArrayProtoEntries,
every: ArrayProtoEvery,
fill: ArrayProtoFill,
findIndex: ArrayProtoFindIndex,
flat: ArrayProtoFlat,
flatMap: ArrayProtoFlatMap,
forEach: ArrayProtoForEach,
indexOf: ArrayProtoIndexOf,
join: ArrayProtoJoin,
keys: ArrayProtoKeys,
lastIndexOf: ArrayProtoLastIndexOf,
map: ArrayProtoMap,
pop: ArrayProtoPop,
reduce: ArrayProtoReduce,
reduceRight: ArrayProtoReduceRight,
reverse: ArrayProtoReverse,
slice: ArrayProtoSlice,
some: ArrayProtoSome,
splice: ArrayProtoSplice,
toLocaleString: ArrayProtoToLocaleString,
toString: ArrayProtoToString,
values: ArrayProtoValues,
[SymbolIterator]: ArrayProtoSymbolIterator
} = ArrayProto;
const ArrayUnscopables = ObjectFreeze(ObjectAssign({
__proto__: null
}, ArrayProto[SymbolUnscopables]));
const {
filter: ArrayProtoFilter,
find: ArrayProtoFind,
includes: ArrayProtoIncludes,
shift: ArrayProtoShift,
sort: ArrayProtoSort,
unshift: ArrayProtoUnshift
} = ArrayProto;
const {
push: ArrayProtoPush
} = ArrayProto;
const {
isArray: ArrayIsArray
} = ArrayCtor;
function toSafeArray(array) {
ReflectSetPrototypeOf(array, null);
array.at = ArrayProtoAt;
array.concat = ArrayProtoConcat; // *** DO NOT SET THE ARRAY CONSTRUCTOR PROPERTY ***
// https://bugs.chromium.org/p/v8/issues/detail?id=13202
// https://source.chromium.org/chromium/chromium/src/+/main:v8/src/objects/lookup.cc;l=196-215?q=IsArraySpeciesLookupChainIntact
//
// In V8 setting the constructor property of an array, promise, regexp, or
// typed array triggers a de-opt because it could change an instance's
// @@species. This de-opt affects at least `Array#splice` and occurs even
// if the prototype of the array is change or nulled beforehand. Further,
// the de-opt persists after a page refresh. It is not until navigating to
// a different page that the performance of `Array#splice` is restored.
array.copyWithin = ArrayProtoCopyWithin;
array.entries = ArrayProtoEntries;
array.every = ArrayProtoEvery;
array.fill = ArrayProtoFill;
array.filter = ArrayProtoFilter;
array.find = ArrayProtoFind;
array.findIndex = ArrayProtoFindIndex;
array.flat = ArrayProtoFlat;
array.flatMap = ArrayProtoFlatMap;
array.forEach = ArrayProtoForEach;
array.includes = ArrayProtoIncludes;
array.indexOf = ArrayProtoIndexOf;
array.join = ArrayProtoJoin;
array.keys = ArrayProtoKeys;
array.lastIndexOf = ArrayProtoLastIndexOf;
array.map = ArrayProtoMap;
array.pop = ArrayProtoPop;
array.push = ArrayProtoPush;
array.reduce = ArrayProtoReduce;
array.reduceRight = ArrayProtoReduceRight;
array.reverse = ArrayProtoReverse;
array.shift = ArrayProtoShift;
array.slice = ArrayProtoSlice;
array.some = ArrayProtoSome;
array.sort = ArrayProtoSort;
array.splice = ArrayProtoSplice;
array.toLocaleString = ArrayProtoToLocaleString;
array.toString = ArrayProtoToString;
array.unshift = ArrayProtoUnshift;
array.values = ArrayProtoValues;
array[SymbolIterator] = ArrayProtoSymbolIterator;
array[SymbolUnscopables] = ArrayUnscopables;
ReflectSetPrototypeOf(array, ArrayProto);
return array;
}
const ArrayBufferProtoByteLengthGetter = ObjectLookupOwnGetter(ArrayBuffer.prototype, 'byteLength'); // https://caniuse.com/bigint
const SUPPORTS_BIG_INT = typeof BigInt === 'function';
const BigIntProtoValueOf = SUPPORTS_BIG_INT ? BigInt.prototype.valueOf :
/* istanbul ignore next: currently unreachable via tests */
undefined;
const {
valueOf: BooleanProtoValueOf
} = Boolean.prototype; // Locker build constants.
const LOCKER_IDENTIFIER_MARKER = '$LWS'; // This package is bundled by third-parties that have their own build time
// replacement logic. Instead of customizing each build system to be aware
// of this package we implement a two phase debug mode by performing small
// runtime checks to determine phase one, our code is unminified, and
// phase two, the user opted-in to custom devtools formatters. Phase one
// is used for light weight initialization time debug while phase two is
// reserved for post initialization runtime
const LOCKER_UNMINIFIED_FLAG = // eslint-disable-next-line @typescript-eslint/naming-convention
/* istanbul ignore next */
`${function LOCKER_UNMINIFIED_FLAG() {
return LOCKER_UNMINIFIED_FLAG.name;
}()}`.includes('LOCKER_UNMINIFIED_FLAG'); // Character constants.
const CHAR_ELLIPSIS = '\u2026'; // Error message constants.
const ERR_ILLEGAL_PROPERTY_ACCESS = 'Illegal property access.'; // Near-membrane constants.
const LOCKER_NEAR_MEMBRANE_SERIALIZED_VALUE_SYMBOL = SymbolFor('@@lockerNearMembraneSerializedValue');
const LOCKER_NEAR_MEMBRANE_SYMBOL = SymbolFor('@@lockerNearMembrane');
const SYMBOL_LIVE_OBJECT = SymbolFor('@@lockerLiveValue'); // Object brand constants.
const TO_STRING_BRAND_ARRAY = '[object Array]';
const TO_STRING_BRAND_ARRAY_BUFFER = '[object ArrayBuffer]';
const TO_STRING_BRAND_BIG_INT = '[object BigInt]';
const TO_STRING_BRAND_BOOLEAN = '[object Boolean]';
const TO_STRING_BRAND_DATE = '[object Date]';
const TO_STRING_BRAND_FUNCTION = '[object Function]';
const TO_STRING_BRAND_MAP = '[object Map]';
const TO_STRING_BRAND_NULL = '[object Null]';
const TO_STRING_BRAND_NUMBER = '[object Number]';
const TO_STRING_BRAND_OBJECT = '[object Object]';
const TO_STRING_BRAND_REG_EXP = '[object RegExp]';
const TO_STRING_BRAND_SET = '[object Set]';
const TO_STRING_BRAND_STRING = '[object String]';
const TO_STRING_BRAND_SYMBOL = '[object Symbol]';
const TO_STRING_BRAND_UNDEFINED = '[object Undefined]';
const TO_STRING_BRAND_WEAK_MAP = '[object WeakMap]';
const TO_STRING_BRAND_WEAK_SET = '[object WeakSet]';
const {
valueOf: DateProtoValueOf
} = Date.prototype;
const MapCtor = Map;
const {
prototype: MapProto
} = MapCtor;
const {
clear: MapProtoClear,
delete: MapProtoDelete,
forEach: MapProtoForEach,
get: MapProtoGet,
has: MapProtoHas,
keys: MapProtoKeys,
values: MapProtoValues,
[SymbolIterator]: MapProtoSymbolIterator,
[SymbolToStringTag]: MapProtoSymbolToStringTag
} = MapProto;
const {
entries: MapProtoEntries,
set: MapProtoSet
} = MapProto;
const MapProtoSizeGetter = ObjectLookupOwnGetter(MapProto, 'size');
function toSafeMap(map) {
ReflectSetPrototypeOf(map, null);
map.clear = MapProtoClear;
map.delete = MapProtoDelete;
map.entries = MapProtoEntries;
map.forEach = MapProtoForEach;
map.get = MapProtoGet;
map.has = MapProtoHas;
map.keys = MapProtoKeys;
map.set = MapProtoSet;
ReflectDefineProperty(map, 'size', {
__proto__: null,
configurable: true,
enumerable: true,
get: MapProtoSizeGetter,
set: undefined
});
map.values = MapProtoValues;
map[SymbolIterator] = MapProtoSymbolIterator;
map[SymbolToStringTag] = MapProtoSymbolToStringTag;
ReflectSetPrototypeOf(map, MapProto);
return map;
}
const NumberCtor = Number;
const {
isFinite: NumberIsFinite,
isInteger: NumberIsInteger
} = NumberCtor;
const {
valueOf: NumberProtoValueOf
} = NumberCtor.prototype;
const RegExpCtor = RegExp;
const {
prototype: RegExpProto
} = RegExpCtor;
const {
test: RegExpProtoTest
} = RegExpProto;
const RegExpProtoSourceGetter = ObjectLookupOwnGetter(RegExpProto, 'source');
const SetCtor = Set;
const {
prototype: SetProto
} = SetCtor;
const {
add: SetProtoAdd,
values: SetProtoValues
} = SetProto;
const SetProtoSizeGetter = ObjectLookupOwnGetter(SetProto, 'size');
const StringCtor = String;
const {
prototype: StringProto
} = StringCtor;
const {
slice: StringProtoSlice,
valueOf: StringProtoValueOf
} = StringProto;
const WeakMapCtor = WeakMap;
const {
prototype: WeakMapProto
} = WeakMapCtor;
const {
has: WeakMapProtoHas
} = WeakMapProto;
const {
delete: WeakMapProtoDelete,
get: WeakMapProtoGet,
set: WeakMapProtoSet,
[SymbolToStringTag]: WeakMapProtoSymbolToStringTag
} = WeakMapProto;
function toSafeWeakMap(weakMap) {
ReflectSetPrototypeOf(weakMap, null);
weakMap.delete = WeakMapProtoDelete;
weakMap.get = WeakMapProtoGet;
weakMap.has = WeakMapProtoHas;
weakMap.set = WeakMapProtoSet;
weakMap[SymbolToStringTag] = WeakMapProtoSymbolToStringTag;
ReflectSetPrototypeOf(weakMap, WeakMapProto);
return weakMap;
}
const WeakSetCtor = WeakSet;
const {
prototype: WeakSetProto
} = WeakSetCtor;
const {
has: WeakSetProtoHas
} = WeakSetProto;
const {
add: WeakSetProtoAdd,
delete: WeakSetProtoDelete,
[SymbolToStringTag]: WeakSetProtoSymbolToStringTag
} = WeakSetProto;
function toSafeWeakSet(weakSet) {
ReflectSetPrototypeOf(weakSet, null);
weakSet.add = WeakSetProtoAdd;
weakSet.delete = WeakSetProtoDelete;
weakSet.has = WeakSetProtoHas;
weakSet[SymbolToStringTag] = WeakSetProtoSymbolToStringTag;
ReflectSetPrototypeOf(weakSet, WeakSetProto);
return weakSet;
}
const {
toStringTag: TO_STRING_TAG_SYMBOL
} = Symbol;
function getBrandByTrialAndError(value) {
// Trail and error attempts are performed in order of most likely,
// e.g. those values that have a @@toStringTag defined by default,
// to least likely.
//
// Internally these brand checks rely on native methods that throw and catch
// an exception when they operate on values with unexpected internal slot
// entries.
// Section 25.1.5.1 get ArrayBuffer.prototype.byteLength
// https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.bytelength
// Step 2: Perform RequireInternalSlot(O, [[ArrayBufferData]]).
try {
if ('byteLength' in value) {
ReflectApply(ArrayBufferProtoByteLengthGetter, value, []);
return TO_STRING_BRAND_ARRAY_BUFFER;
} // eslint-disable-next-line no-empty
} catch (_unused) {} // Section 21.4.4 Properties of the Date Prototype Object
// https://tc39.es/ecma262/#thistimevalue
// Step 1: If Type(value) is Object and value has a [[DateValue]] internal slot, then
// a. Return value.[[DateValue]].
// Step 2: Throw a TypeError exception.
try {
if ('toLocaleDateString' in value) {
ReflectApply(DateProtoValueOf, value, []);
return TO_STRING_BRAND_DATE;
} // eslint-disable-next-line no-empty
} catch (_unused2) {} // Section 24.1.3.10 get Map.prototype.size
// https://tc39.es/ecma262/#sec-get-map.prototype.size
// Step 2: Perform ? RequireInternalSlot(M, [[MapData]]).
try {
if ('get' in value && 'size' in value) {
ReflectApply(MapProtoSizeGetter, value, []);
return TO_STRING_BRAND_MAP;
} // eslint-disable-next-line no-empty
} catch (_unused3) {} // Section 24.2.3.9 get Set.prototype.size
// https://tc39.es/ecma262/#sec-get-set.prototype.size
// Step 2: Perform ? RequireInternalSlot(S, [[SetData]]).
try {
if ('add' in value && 'size' in value) {
ReflectApply(SetProtoSizeGetter, value, []);
return TO_STRING_BRAND_SET;
} // eslint-disable-next-line no-empty
} catch (_unused4) {} // Section 24.3.3.4 WeakMap.prototype.has ( key )
// https://tc39.es/ecma262/#sec-weakmap.prototype.has
// Step 2: Perform RequireInternalSlot(M, [[WeakMapData]]).
try {
if ('get' in value && !('size' in value)) {
ReflectApply(WeakMapProtoHas, value, []);
return TO_STRING_BRAND_WEAK_MAP;
} // eslint-disable-next-line no-empty
} catch (_unused5) {} // Section 24.4.3.4 WeakSet.prototype.has ( value )
// https://tc39.es/ecma262/#sec-weakset.prototype.has
// Step 2: 2. Perform RequireInternalSlot(S, [[WeakSetData]]).
try {
if ('add' in value && !('size' in value)) {
ReflectApply(WeakSetProtoHas, value, []);
return TO_STRING_BRAND_WEAK_SET;
} // eslint-disable-next-line no-empty
} catch (_unused6) {} // The following checks are for the rare occurrence of object, i.e. boxed,
// primitive values or those objects without a default @@toStringTag.
// Section 21.1.3 Properties of the Number Prototype Object
// https://tc39.es/ecma262/#thisnumbervalue
// Step 2: If Type(value) is Object and value has a [[NumberData]] internal slot, then
// a. Let n be value.[[NumberData]].
// b. Assert: Type(n) is Number.
try {
if ('toPrecision' in value) {
ReflectApply(NumberProtoValueOf, value, []);
return TO_STRING_BRAND_NUMBER;
} // eslint-disable-next-line no-empty
} catch (_unused7) {} // Section 20.4.3 Properties of the Symbol Prototype Object
// https://tc39.es/ecma262/#thissymbolvalue
// Step 2: If Type(value) is Object and value has a [[SymbolData]] internal slot, then
// a. Let s be value.[[SymbolData]].
// b. Assert: Type(s) is Symbol.
try {
if ('description' in value) {
ReflectApply(SymbolProtoValueOf, value, []);
return TO_STRING_BRAND_SYMBOL;
} // eslint-disable-next-line no-empty
} catch (_unused8) {} // Perform heavier checks last.
// Section 22.2.6.13 get RegExp.prototype.source
// https://tc39.es/ecma262/#sec-get-regexp.prototype.source
// Step 3: If R does not have an [[OriginalSource]] internal slot, then
// a. If SameValue(R, %RegExp.prototype%) is true, return "(?:)".
// b. Otherwise, throw a TypeError exception.
try {
if (ObjectHasOwn(value, 'lastIndex')) {
ReflectApply(RegExpProtoSourceGetter, value, []);
return TO_STRING_BRAND_REG_EXP;
} // eslint-disable-next-line no-empty
} catch (_unused9) {} // Section 22.1.3 Properties of the String Prototype Object
// https://tc39.es/ecma262/#thisstringvalue
// Step 2: If Type(value) is Object and value has a [[StringData]] internal slot, then
// a. Let s be value.[[StringData]].
// b. Assert: Type(s) is String.
try {
if (ObjectHasOwn(value, 'length')) {
ReflectApply(StringProtoValueOf, value, []);
return TO_STRING_BRAND_STRING;
} // eslint-disable-next-line no-empty
} catch (_unused10) {} // Section 20.3.3 Properties of the Boolean Prototype Object
// https://tc39.es/ecma262/#thisbooleanvalue
// Step 2: If Type(value) is Object and value has a [[BooleanData]] internal slot, then
// a. Let b be value.[[BooleanData]].
// b. Assert: Type(b) is Boolean.
try {
ReflectApply(BooleanProtoValueOf, value, []);
return TO_STRING_BRAND_BOOLEAN; // eslint-disable-next-line no-empty
} catch (_unused11) {} // istanbul ignore else: all platforms that LWS runs tests in support BigInt
if (SUPPORTS_BIG_INT) {
try {
// Section 21.2.3 Properties of the BigInt Prototype Object
// https://tc39.es/ecma262/#thisbigintvalue
// Step 2: If Type(value) is Object and value has a [[BigIntData]] internal slot, then
// a. Assert: Type(value.[[BigIntData]]) is BigInt.
ReflectApply(BigIntProtoValueOf, value, []);
return TO_STRING_BRAND_BIG_INT; // eslint-disable-next-line no-empty
} catch (_unused12) {}
} // Cannot detect brands for Arguments and Error objects.
return TO_STRING_BRAND_OBJECT;
}
function getBrand(value) {
// Section 20.1.3.6 Object.prototype.toString ( )
// https://tc39.es/ecma262/#sec-object.prototype.tostring
if (value === null) {
return TO_STRING_BRAND_NULL;
}
if (value === undefined) {
return TO_STRING_BRAND_UNDEFINED;
} // eslint-disable-next-line default-case
switch (typeof value) {
case 'bigint':
return TO_STRING_BRAND_BIG_INT;
case 'boolean':
return TO_STRING_BRAND_BOOLEAN;
case 'function':
return TO_STRING_BRAND_FUNCTION;
case 'number':
return TO_STRING_BRAND_NUMBER;
case 'string':
return TO_STRING_BRAND_STRING;
case 'symbol':
return TO_STRING_BRAND_SYMBOL;
}
if (ArrayIsArray(value)) {
return TO_STRING_BRAND_ARRAY;
}
return TO_STRING_TAG_SYMBOL in value ? getBrandByTrialAndError(value) : ReflectApply(ObjectProtoToString, value, []);
}
const {
parse: JSONParse
} = JSON; // Used by '@locker/near-membrane-dom'.
const {
stringify: JSONStringify
} = JSON;
function getNearMembraneProxySerializedValue(object) {
if (typeof object === 'object' && object !== null || typeof object === 'function') {
// To extract the serialized value of a blue near-membrane proxy we must
// perform a two step handshake. First, we trigger the "has" trap for
// the `LOCKER_NEAR_MEMBRANE_SERIALIZED_VALUE_SYMBOL` property which
// must report `false`. Second, we trigger the "get" trap to return the
// serialized value.
return LOCKER_NEAR_MEMBRANE_SERIALIZED_VALUE_SYMBOL in object ? undefined : object[LOCKER_NEAR_MEMBRANE_SERIALIZED_VALUE_SYMBOL];
}
return undefined;
}
function isNearMembraneProxy(value) {
if (typeof value === 'object' && value !== null || typeof value === 'function') {
// To extract the flag value of a blue near-membrane proxy we must
// perform a two step handshake. First, we trigger the "has" trap for
// the `LOCKER_NEAR_MEMBRANE_SYMBOL` property which must report `false`.
// Second, we trigger the "get" trap to return the flag value.
return !(LOCKER_NEAR_MEMBRANE_SYMBOL in value) && value[LOCKER_NEAR_MEMBRANE_SYMBOL] === true;
}
return false;
}
const SEEN_OBJECTS = toSafeMap(new MapCtor());
function cloneBoxedPrimitive(object) {
return ObjectCtor(getNearMembraneProxySerializedValue(object));
}
function cloneMap(map, queue) {
// Section 2.7.3 StructuredSerializeInternal:
// https://html.spec.whatwg.org/multipage/structured-data.html#structuredserializeinternal
// Step 26.1.1: Let copiedList be a new empty List.
const clone = new MapCtor(); // Step 26.1.2: For each Record { [[Key]], [[Value]] } entry of value.[[MapData]]...
const entriesIterable = ReflectApply(MapProtoEntries, map, []); // Step 26.1.3 For each Record { [[Key]], [[Value]] } entry of copiedList:
let {
length: queueOffset
} = queue; // eslint-disable-next-line no-constant-condition
while (true) {
const {
done,
value: subKeyValuePair
} = entriesIterable.next();
if (done) {
break;
}
const {
0: subKey,
1: subValue
} = subKeyValuePair;
let subCloneKey; // Step 26.1.3.1: Let serializedKey be ? StructuredSerializeInternal(entry.[[Key]], forStorage, memory).
queue[queueOffset++] = [subClone => {
subCloneKey = subClone;
}, subKey]; // Step 26.1.3.2: Let serializedValue be ? StructuredSerializeInternal(entry.[[Value]], forStorage, memory).
queue[queueOffset++] = [subCloneValue => {
ReflectApply(MapProtoSet, clone, [subCloneKey, subCloneValue]);
}, subValue];
}
return clone;
}
function cloneRegExp(regexp) {
const {
flags,
source
} = JSONParse(getNearMembraneProxySerializedValue(regexp));
return new RegExpCtor(source, flags);
}
function cloneSet(set, queue) {
// Section 2.7.3 StructuredSerializeInternal:
// https://html.spec.whatwg.org/multipage/structured-data.html#structuredserializeinternal
// Step 26.2.1: Let copiedList be a new empty List.
const clone = new SetCtor(); // Step 26.2.2: For each entry of value.[[SetData]]...
const valuesIterable = ReflectApply(SetProtoValues, set, []); // Step 26.2.3: For each entry of copiedList:
let {
length: queueOffset
} = queue; // eslint-disable-next-line no-constant-condition
while (true) {
const {
done,
value: subValue
} = valuesIterable.next();
if (done) {
break;
} // Step 26.2.3.1: Let serializedEntry be ? StructuredSerializeInternal(entry, forStorage, memory).
queue[queueOffset++] = [subCloneValue => {
ReflectApply(SetProtoAdd, clone, [subCloneValue]);
}, subValue];
}
return clone;
}
function enqueue(queue, originalValue, cloneValue) {
// Section 2.7.3 StructuredSerializeInternal:
// https://html.spec.whatwg.org/multipage/structured-data.html#structuredserializeinternal
// Step 26.4: Otherwise, for each key in ! EnumerableOwnPropertyNames(value, key)...
// Note: Object.keys() performs EnumerableOwnPropertyNames() internally as
// defined in ECMA262:
// https://tc39.es/ecma262/#sec-object.keys
const keys = ObjectKeys(originalValue);
let {
length: queueOffset
} = queue;
for (let i = 0, {
length
} = keys; i < length; i += 1) {
// Step 26.4.1.1: Let inputValue be ? value.[[Get]](key, value).
// The [[Get]] operation is defined in ECMA262 for ordinary objects,
// argument objects, integer-indexed exotic objects, module namespace
// objects, and proxy objects.
// https://tc39.es/ecma262/#sec-ordinary-object-internal-methods-and-internal-slots-get-p-receiver
const key = keys[i];
const subValue = originalValue[key];
queue[queueOffset++] = [subCloneValue => {
// Step 26.4.1.3: Property descriptor attributes are not
// preserved during deserialization because only keys and
// values are captured in serialized.[[Properties]].
cloneValue[key] = subCloneValue;
}, subValue];
}
} // This function is the unguarded internal variant of `partialStructuredClone()`.
// Any error thrown that is captured by `partialStructuredClone()` is treated as
// a `DataCloneError`. This function clones blue membrane proxied arrays, plain
// objects, maps, regexps, sets, and boxed primitives. The following non-membrane
// proxied objects are set by reference instead of cloning:
// ArrayBuffer
// BigInt64Array
// BigUint64Array
// Blob
// DataView
// Date
// DOMException
// DOMMatrix
// DOMMatrixReadOnly
// DOMPoint
// DOMPointReadOnly
// DOMQuad
// DOMRect
// DOMRectReadOnly
// Error
// EvalError
// File
// FileList
// Float32Array
// Float64Array
// ImageBitMap
// ImageData
// Int8Array
// Int16Array
// Int32Array
// RangeError
// ReferenceError
// SyntaxError
// TypeError
// Uint8Array
// Uint8ClampedArray
// Uint16Array
// Uint32Array
// URIError
//
// Note:
// This function performs brand checks using `Object.prototype.toString`. The
// results can be faked with `Symbol.toStringTag` property values and are a poor
// substitute for native internal slot checks. However, for our purposes they
// are perfectly fine and avoid having to repeatedly walk the prototype of proxied
// values. Cloned values should be passed to native methods, like `postMessage()`,
// which perform their own validation with internal slot checks.
function partialStructuredCloneInternal(value) {
// Using a queue instead of recursive function calls avoids call stack limits
// and enables cloning more complex and deeply nested objects.
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Too_much_recursion
let result;
const queue = [[subClone => {
result = subClone;
}, value]]; // eslint-disable-next-line no-labels
queueLoop: while (queue.length) {
// Section 2.7.3 StructuredSerializeInternal:
// https://html.spec.whatwg.org/multipage/structured-data.html#structuredserializeinternal
// prettier-ignore
const {
0: setter,
1: originalValue
} = ReflectApply(ArrayProtoShift, queue, []); // Step 4: If Type(value) is Undefined, Null, Boolean, Number, BigInt, or String
if (originalValue === null || originalValue === undefined || typeof originalValue === 'boolean' || typeof originalValue === 'number' || typeof originalValue === 'string' || typeof originalValue === 'bigint') {
setter(originalValue); // eslint-disable-next-line no-continue, no-extra-label, no-labels
continue queueLoop;
} // Step 5: If Type(value) is Symbol, then throw a 'DataCloneError' DOMException.
if (typeof originalValue === 'symbol') {
// Stop cloning and set the original value and defer throwing to
// native methods.
setter(originalValue); // eslint-disable-next-line no-extra-label, no-labels
break queueLoop;
} // To support circular references check if the original value has been
// seen. If it has then use the clone associated with its record instead
// of creating a new clone.
let cloneValue = SEEN_OBJECTS.get(originalValue);
if (cloneValue) {
setter(cloneValue); // eslint-disable-next-line no-continue, no-extra-label, no-labels
continue queueLoop;
} // Perform a brand check on originalValue.
const brand = getBrand(originalValue); // eslint-disable-next-line default-case
switch (brand) {
// Step 19: Otherwise, if value is a platform object...
case TO_STRING_BRAND_OBJECT:
{
const proto = ReflectGetPrototypeOf(originalValue);
if (proto === ObjectProto || proto === null || // Possible `Object.prototype` from another document.
ReflectGetPrototypeOf(proto) === null) {
cloneValue = {}; // Step 19.4: Set deep to true.
enqueue(queue, originalValue, cloneValue);
}
break;
}
// Step 18: Otherwise, if value is an Array exotic object...
case TO_STRING_BRAND_ARRAY:
// Step 18.1 Let valueLenDescriptor be ? OrdinaryGetOwnProperty(value, 'length').
// Note: Rather than perform the more complex OrdinaryGetOwnProperty()
// operation for 'length' because it is a non-configurable property
// we can access it with the simpler [[Get]]() operation defined
// in ECMA262.
// https://tc39.es/ecma262/#sec-integer-indexed-exotic-objects-get-p-receiver
cloneValue = ArrayCtor(originalValue.length); // Step 18.4: Set deep to true.
enqueue(queue, originalValue, cloneValue);
break;
// Step 15: Otherwise, if value has [[MapData]] internal slot...
// Step 15.2: Set deep to true.
case TO_STRING_BRAND_MAP:
cloneValue = cloneMap(originalValue, queue);
break;
// Step 16: Otherwise, if value has [[SetData]] internal slot...
// Step 16.2: Set deep to true.
case TO_STRING_BRAND_SET:
cloneValue = cloneSet(originalValue, queue);
break;
}
if (cloneValue === undefined) {
// istanbul ignore else
if (!isNearMembraneProxy(originalValue)) {
// Skip cloning non-membrane proxied objects.
SEEN_OBJECTS.set(originalValue, originalValue);
setter(originalValue); // eslint-disable-next-line no-extra-label, no-labels
continue queueLoop;
} // Cases ordered by a guestimate on frequency of encounter.
// eslint-disable-next-line default-case
switch (brand) {
// Step 12: Otherwise, if value has a [[RegExpMatcher]] internal slot...
case TO_STRING_BRAND_REG_EXP:
cloneValue = cloneRegExp(originalValue);
break;
// Step 7: If value has a [[BooleanData]] internal slot...
case TO_STRING_BRAND_BOOLEAN: // Step 8: Otherwise, if value has a [[NumberData]] internal slot...
// eslint-disable-next-line no-fallthrough
case TO_STRING_BRAND_NUMBER: // Step 9: Otherwise, if value has a [[BigIntData]] internal slot...
// eslint-disable-next-line no-fallthrough
case TO_STRING_BRAND_BIG_INT: // Step 10: Otherwise, if value has a [[StringData]] internal slot...
// eslint-disable-next-line no-fallthrough
case TO_STRING_BRAND_STRING:
cloneValue = cloneBoxedPrimitive(originalValue);
break;
}
} // Step 21: Otherwise, if IsCallable(value) is true, then throw a 'DataCloneError'
// Step 20: Otherwise, if value is a platform object, then throw a 'DataCloneError'
Iif (cloneValue === undefined) {
// Stop cloning and set the original value and defer throwing to
// native methods.
setter(originalValue); // eslint-disable-next-line no-extra-label, no-labels
break queueLoop;
}
SEEN_OBJECTS.set(originalValue, cloneValue);
setter(cloneValue);
}
return result;
}
function partialStructuredClone(value) {
let result = value;
try {
result = partialStructuredCloneInternal(value); // eslint-disable-next-line no-empty
} catch (_unused13) {}
SEEN_OBJECTS.clear();
return result;
}
const ErrorCtor = Error;
const TypeErrorCtor = TypeError;
function noop() {// No operation performed.
} // Used by '@locker/near-membrane-dom'.
const {
min: MathMin
} = Math;
const ProxyCtor = Proxy;
export { ArrayBufferProtoByteLengthGetter, ArrayCtor, ArrayIsArray, ArrayProtoFilter, ArrayProtoFind, ArrayProtoIncludes, ArrayProtoPush, ArrayProtoShift, ArrayProtoSort, ArrayProtoUnshift, BigIntProtoValueOf, BooleanProtoValueOf, CHAR_ELLIPSIS, DateProtoValueOf, ERR_ILLEGAL_PROPERTY_ACCESS, ErrorCtor, JSONParse, JSONStringify, LOCKER_IDENTIFIER_MARKER, LOCKER_NEAR_MEMBRANE_SERIALIZED_VALUE_SYMBOL, LOCKER_NEAR_MEMBRANE_SYMBOL, LOCKER_UNMINIFIED_FLAG, MapCtor, MapProtoEntries, MapProtoSet, MapProtoSizeGetter, MathMin, NumberIsFinite, NumberIsInteger, NumberProtoValueOf, ObjectAssign, ObjectCtor, ObjectFreeze, ObjectHasOwn, ObjectKeys, ObjectLookupOwnGetter, ObjectLookupOwnSetter, ObjectProto, ObjectProtoToString, ProxyCtor, ReflectApply, ReflectDefineProperty, ReflectDeleteProperty, ReflectGetPrototypeOf, ReflectOwnKeys, ReflectSetPrototypeOf, RegExpCtor, RegExpProtoSourceGetter, RegExpProtoTest, SUPPORTS_BIG_INT, SYMBOL_LIVE_OBJECT, SetCtor, SetProtoAdd, SetProtoSizeGetter, SetProtoValues, StringCtor, StringProtoSlice, StringProtoValueOf, SymbolFor, SymbolIterator, SymbolProtoValueOf, SymbolToStringTag, SymbolUnscopables, TO_STRING_BRAND_ARRAY, TO_STRING_BRAND_ARRAY_BUFFER, TO_STRING_BRAND_BIG_INT, TO_STRING_BRAND_BOOLEAN, TO_STRING_BRAND_DATE, TO_STRING_BRAND_FUNCTION, TO_STRING_BRAND_MAP, TO_STRING_BRAND_NULL, TO_STRING_BRAND_NUMBER, TO_STRING_BRAND_OBJECT, TO_STRING_BRAND_REG_EXP, TO_STRING_BRAND_SET, TO_STRING_BRAND_STRING, TO_STRING_BRAND_SYMBOL, TO_STRING_BRAND_UNDEFINED, TO_STRING_BRAND_WEAK_MAP, TO_STRING_BRAND_WEAK_SET, TypeErrorCtor, WeakMapCtor, WeakMapProtoHas, WeakSetCtor, WeakSetProtoHas, getBrand, getNearMembraneProxySerializedValue, isNearMembraneProxy, isObject, noop, partialStructuredClone, toSafeArray, toSafeMap, toSafeWeakMap, toSafeWeakSet };
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