'use strict';
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var IS_PURE = require('../internals/is-pure');
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var $ = require('../internals/export');
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var globalThis = require('../internals/global-this');
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var getBuiltIn = require('../internals/get-built-in');
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var uncurryThis = require('../internals/function-uncurry-this');
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var fails = require('../internals/fails');
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var uid = require('../internals/uid');
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var isCallable = require('../internals/is-callable');
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var isConstructor = require('../internals/is-constructor');
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var isNullOrUndefined = require('../internals/is-null-or-undefined');
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var isObject = require('../internals/is-object');
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var isSymbol = require('../internals/is-symbol');
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var iterate = require('../internals/iterate');
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var anObject = require('../internals/an-object');
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var classof = require('../internals/classof');
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var hasOwn = require('../internals/has-own-property');
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var createProperty = require('../internals/create-property');
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var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
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var lengthOfArrayLike = require('../internals/length-of-array-like');
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var validateArgumentsLength = require('../internals/validate-arguments-length');
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var getRegExpFlags = require('../internals/regexp-get-flags');
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var MapHelpers = require('../internals/map-helpers');
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var SetHelpers = require('../internals/set-helpers');
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var setIterate = require('../internals/set-iterate');
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var detachTransferable = require('../internals/detach-transferable');
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var ERROR_STACK_INSTALLABLE = require('../internals/error-stack-installable');
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var PROPER_STRUCTURED_CLONE_TRANSFER = require('../internals/structured-clone-proper-transfer');
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var Object = globalThis.Object;
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var Array = globalThis.Array;
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var Date = globalThis.Date;
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var Error = globalThis.Error;
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var TypeError = globalThis.TypeError;
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var PerformanceMark = globalThis.PerformanceMark;
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var DOMException = getBuiltIn('DOMException');
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var Map = MapHelpers.Map;
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var mapHas = MapHelpers.has;
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var mapGet = MapHelpers.get;
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var mapSet = MapHelpers.set;
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var Set = SetHelpers.Set;
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var setAdd = SetHelpers.add;
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var setHas = SetHelpers.has;
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var objectKeys = getBuiltIn('Object', 'keys');
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var push = uncurryThis([].push);
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var thisBooleanValue = uncurryThis(true.valueOf);
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var thisNumberValue = uncurryThis(1.0.valueOf);
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var thisStringValue = uncurryThis(''.valueOf);
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var thisTimeValue = uncurryThis(Date.prototype.getTime);
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var PERFORMANCE_MARK = uid('structuredClone');
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var DATA_CLONE_ERROR = 'DataCloneError';
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var TRANSFERRING = 'Transferring';
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var checkBasicSemantic = function (structuredCloneImplementation) {
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return !fails(function () {
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var set1 = new globalThis.Set([7]);
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var set2 = structuredCloneImplementation(set1);
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var number = structuredCloneImplementation(Object(7));
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return set2 === set1 || !set2.has(7) || !isObject(number) || +number !== 7;
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}) && structuredCloneImplementation;
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};
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var checkErrorsCloning = function (structuredCloneImplementation, $Error) {
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return !fails(function () {
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var error = new $Error();
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var test = structuredCloneImplementation({ a: error, b: error });
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return !(test && test.a === test.b && test.a instanceof $Error && test.a.stack === error.stack);
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});
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};
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// https://github.com/whatwg/html/pull/5749
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var checkNewErrorsCloningSemantic = function (structuredCloneImplementation) {
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return !fails(function () {
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var test = structuredCloneImplementation(new globalThis.AggregateError([1], PERFORMANCE_MARK, { cause: 3 }));
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return test.name !== 'AggregateError' || test.errors[0] !== 1 || test.message !== PERFORMANCE_MARK || test.cause !== 3;
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});
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};
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// FF94+, Safari 15.4+, Chrome 98+, NodeJS 17.0+, Deno 1.13+
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// FF<103 and Safari implementations can't clone errors
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1556604
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// FF103 can clone errors, but `.stack` of clone is an empty string
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1778762
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// FF104+ fixed it on usual errors, but not on DOMExceptions
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1777321
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// Chrome <102 returns `null` if cloned object contains multiple references to one error
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// https://bugs.chromium.org/p/v8/issues/detail?id=12542
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// NodeJS implementation can't clone DOMExceptions
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// https://github.com/nodejs/node/issues/41038
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// only FF103+ supports new (html/5749) error cloning semantic
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var nativeStructuredClone = globalThis.structuredClone;
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var FORCED_REPLACEMENT = IS_PURE
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|| !checkErrorsCloning(nativeStructuredClone, Error)
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|| !checkErrorsCloning(nativeStructuredClone, DOMException)
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|| !checkNewErrorsCloningSemantic(nativeStructuredClone);
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// Chrome 82+, Safari 14.1+, Deno 1.11+
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// Chrome 78-81 implementation swaps `.name` and `.message` of cloned `DOMException`
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// Chrome returns `null` if cloned object contains multiple references to one error
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// Safari 14.1 implementation doesn't clone some `RegExp` flags, so requires a workaround
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// Safari implementation can't clone errors
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// Deno 1.2-1.10 implementations too naive
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// NodeJS 16.0+ does not have `PerformanceMark` constructor
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// NodeJS <17.2 structured cloning implementation from `performance.mark` is too naive
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// and can't clone, for example, `RegExp` or some boxed primitives
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// https://github.com/nodejs/node/issues/40840
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// no one of those implementations supports new (html/5749) error cloning semantic
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var structuredCloneFromMark = !nativeStructuredClone && checkBasicSemantic(function (value) {
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return new PerformanceMark(PERFORMANCE_MARK, { detail: value }).detail;
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});
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var nativeRestrictedStructuredClone = checkBasicSemantic(nativeStructuredClone) || structuredCloneFromMark;
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var throwUncloneable = function (type) {
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throw new DOMException('Uncloneable type: ' + type, DATA_CLONE_ERROR);
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};
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var throwUnpolyfillable = function (type, action) {
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throw new DOMException((action || 'Cloning') + ' of ' + type + ' cannot be properly polyfilled in this engine', DATA_CLONE_ERROR);
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};
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var tryNativeRestrictedStructuredClone = function (value, type) {
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if (!nativeRestrictedStructuredClone) throwUnpolyfillable(type);
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return nativeRestrictedStructuredClone(value);
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};
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var createDataTransfer = function () {
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var dataTransfer;
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try {
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dataTransfer = new globalThis.DataTransfer();
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} catch (error) {
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try {
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dataTransfer = new globalThis.ClipboardEvent('').clipboardData;
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} catch (error2) { /* empty */ }
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}
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return dataTransfer && dataTransfer.items && dataTransfer.files ? dataTransfer : null;
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};
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var cloneBuffer = function (value, map, $type) {
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if (mapHas(map, value)) return mapGet(map, value);
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var type = $type || classof(value);
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var clone, length, options, source, target, i;
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if (type === 'SharedArrayBuffer') {
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if (nativeRestrictedStructuredClone) clone = nativeRestrictedStructuredClone(value);
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// SharedArrayBuffer should use shared memory, we can't polyfill it, so return the original
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else clone = value;
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} else {
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var DataView = globalThis.DataView;
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// `ArrayBuffer#slice` is not available in IE10
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// `ArrayBuffer#slice` and `DataView` are not available in old FF
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if (!DataView && !isCallable(value.slice)) throwUnpolyfillable('ArrayBuffer');
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// detached buffers throws in `DataView` and `.slice`
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try {
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if (isCallable(value.slice) && !value.resizable) {
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clone = value.slice(0);
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} else {
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length = value.byteLength;
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options = 'maxByteLength' in value ? { maxByteLength: value.maxByteLength } : undefined;
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// eslint-disable-next-line es/no-resizable-and-growable-arraybuffers -- safe
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clone = new ArrayBuffer(length, options);
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source = new DataView(value);
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target = new DataView(clone);
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for (i = 0; i < length; i++) {
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target.setUint8(i, source.getUint8(i));
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}
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}
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} catch (error) {
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throw new DOMException('ArrayBuffer is detached', DATA_CLONE_ERROR);
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}
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}
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mapSet(map, value, clone);
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return clone;
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};
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var cloneView = function (value, type, offset, length, map) {
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var C = globalThis[type];
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// in some old engines like Safari 9, typeof C is 'object'
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// on Uint8ClampedArray or some other constructors
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if (!isObject(C)) throwUnpolyfillable(type);
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return new C(cloneBuffer(value.buffer, map), offset, length);
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};
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var structuredCloneInternal = function (value, map) {
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if (isSymbol(value)) throwUncloneable('Symbol');
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if (!isObject(value)) return value;
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// effectively preserves circular references
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if (map) {
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if (mapHas(map, value)) return mapGet(map, value);
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} else map = new Map();
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var type = classof(value);
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var C, name, cloned, dataTransfer, i, length, keys, key;
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switch (type) {
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case 'Array':
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cloned = Array(lengthOfArrayLike(value));
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break;
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case 'Object':
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cloned = {};
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break;
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case 'Map':
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cloned = new Map();
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break;
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case 'Set':
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cloned = new Set();
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break;
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case 'RegExp':
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// in this block because of a Safari 14.1 bug
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// old FF does not clone regexes passed to the constructor, so get the source and flags directly
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cloned = new RegExp(value.source, getRegExpFlags(value));
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break;
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case 'Error':
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name = value.name;
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switch (name) {
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case 'AggregateError':
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cloned = new (getBuiltIn(name))([]);
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break;
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case 'EvalError':
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case 'RangeError':
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case 'ReferenceError':
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case 'SuppressedError':
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case 'SyntaxError':
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case 'TypeError':
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case 'URIError':
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cloned = new (getBuiltIn(name))();
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break;
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case 'CompileError':
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case 'LinkError':
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case 'RuntimeError':
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cloned = new (getBuiltIn('WebAssembly', name))();
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break;
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default:
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cloned = new Error();
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}
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break;
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case 'DOMException':
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cloned = new DOMException(value.message, value.name);
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break;
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case 'ArrayBuffer':
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case 'SharedArrayBuffer':
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cloned = cloneBuffer(value, map, type);
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break;
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case 'DataView':
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case 'Int8Array':
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case 'Uint8Array':
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case 'Uint8ClampedArray':
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case 'Int16Array':
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case 'Uint16Array':
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case 'Int32Array':
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case 'Uint32Array':
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case 'Float16Array':
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case 'Float32Array':
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case 'Float64Array':
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case 'BigInt64Array':
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case 'BigUint64Array':
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length = type === 'DataView' ? value.byteLength : value.length;
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cloned = cloneView(value, type, value.byteOffset, length, map);
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break;
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case 'DOMQuad':
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try {
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cloned = new DOMQuad(
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structuredCloneInternal(value.p1, map),
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structuredCloneInternal(value.p2, map),
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structuredCloneInternal(value.p3, map),
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structuredCloneInternal(value.p4, map)
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);
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} catch (error) {
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cloned = tryNativeRestrictedStructuredClone(value, type);
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}
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break;
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case 'File':
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if (nativeRestrictedStructuredClone) try {
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cloned = nativeRestrictedStructuredClone(value);
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// NodeJS 20.0.0 bug, https://github.com/nodejs/node/issues/47612
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if (classof(cloned) !== type) cloned = undefined;
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} catch (error) { /* empty */ }
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if (!cloned) try {
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cloned = new File([value], value.name, value);
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} catch (error) { /* empty */ }
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if (!cloned) throwUnpolyfillable(type);
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break;
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case 'FileList':
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dataTransfer = createDataTransfer();
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if (dataTransfer) {
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for (i = 0, length = lengthOfArrayLike(value); i < length; i++) {
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dataTransfer.items.add(structuredCloneInternal(value[i], map));
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}
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cloned = dataTransfer.files;
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} else cloned = tryNativeRestrictedStructuredClone(value, type);
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break;
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case 'ImageData':
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// Safari 9 ImageData is a constructor, but typeof ImageData is 'object'
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try {
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cloned = new ImageData(
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structuredCloneInternal(value.data, map),
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value.width,
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value.height,
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{ colorSpace: value.colorSpace }
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);
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} catch (error) {
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cloned = tryNativeRestrictedStructuredClone(value, type);
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} break;
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default:
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if (nativeRestrictedStructuredClone) {
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cloned = nativeRestrictedStructuredClone(value);
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} else switch (type) {
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case 'BigInt':
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// can be a 3rd party polyfill
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cloned = Object(value.valueOf());
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break;
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case 'Boolean':
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cloned = Object(thisBooleanValue(value));
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break;
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case 'Number':
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cloned = Object(thisNumberValue(value));
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break;
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case 'String':
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cloned = Object(thisStringValue(value));
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break;
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case 'Date':
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cloned = new Date(thisTimeValue(value));
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break;
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case 'Blob':
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try {
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cloned = value.slice(0, value.size, value.type);
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} catch (error) {
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throwUnpolyfillable(type);
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} break;
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case 'DOMPoint':
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case 'DOMPointReadOnly':
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C = globalThis[type];
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try {
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cloned = C.fromPoint
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? C.fromPoint(value)
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: new C(value.x, value.y, value.z, value.w);
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} catch (error) {
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throwUnpolyfillable(type);
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} break;
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case 'DOMRect':
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case 'DOMRectReadOnly':
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C = globalThis[type];
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try {
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cloned = C.fromRect
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? C.fromRect(value)
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: new C(value.x, value.y, value.width, value.height);
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} catch (error) {
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throwUnpolyfillable(type);
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} break;
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case 'DOMMatrix':
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case 'DOMMatrixReadOnly':
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C = globalThis[type];
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try {
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cloned = C.fromMatrix
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? C.fromMatrix(value)
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: new C(value);
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} catch (error) {
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throwUnpolyfillable(type);
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} break;
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case 'AudioData':
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case 'VideoFrame':
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if (!isCallable(value.clone)) throwUnpolyfillable(type);
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try {
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cloned = value.clone();
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} catch (error) {
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throwUncloneable(type);
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} break;
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case 'CropTarget':
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case 'CryptoKey':
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case 'FileSystemDirectoryHandle':
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case 'FileSystemFileHandle':
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case 'FileSystemHandle':
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case 'GPUCompilationInfo':
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case 'GPUCompilationMessage':
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case 'ImageBitmap':
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case 'RTCCertificate':
|
case 'WebAssembly.Module':
|
throwUnpolyfillable(type);
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// break omitted
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default:
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throwUncloneable(type);
|
}
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}
|
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mapSet(map, value, cloned);
|
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switch (type) {
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case 'Array':
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case 'Object':
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keys = objectKeys(value);
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for (i = 0, length = lengthOfArrayLike(keys); i < length; i++) {
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key = keys[i];
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createProperty(cloned, key, structuredCloneInternal(value[key], map));
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} break;
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case 'Map':
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value.forEach(function (v, k) {
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mapSet(cloned, structuredCloneInternal(k, map), structuredCloneInternal(v, map));
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});
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break;
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case 'Set':
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value.forEach(function (v) {
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setAdd(cloned, structuredCloneInternal(v, map));
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});
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break;
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case 'Error':
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createNonEnumerableProperty(cloned, 'message', structuredCloneInternal(value.message, map));
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if (hasOwn(value, 'cause')) {
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createNonEnumerableProperty(cloned, 'cause', structuredCloneInternal(value.cause, map));
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}
|
if (name === 'AggregateError') {
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cloned.errors = structuredCloneInternal(value.errors, map);
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} else if (name === 'SuppressedError') {
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cloned.error = structuredCloneInternal(value.error, map);
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cloned.suppressed = structuredCloneInternal(value.suppressed, map);
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} // break omitted
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case 'DOMException':
|
if (ERROR_STACK_INSTALLABLE) {
|
createNonEnumerableProperty(cloned, 'stack', structuredCloneInternal(value.stack, map));
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}
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}
|
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return cloned;
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};
|
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var tryToTransfer = function (rawTransfer, map) {
|
if (!isObject(rawTransfer)) throw new TypeError('Transfer option cannot be converted to a sequence');
|
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var transfer = [];
|
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iterate(rawTransfer, function (value) {
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push(transfer, anObject(value));
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});
|
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var i = 0;
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var length = lengthOfArrayLike(transfer);
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var buffers = new Set();
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var value, type, C, transferred, canvas, context;
|
|
while (i < length) {
|
value = transfer[i++];
|
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type = classof(value);
|
|
if (type === 'ArrayBuffer' ? setHas(buffers, value) : mapHas(map, value)) {
|
throw new DOMException('Duplicate transferable', DATA_CLONE_ERROR);
|
}
|
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if (type === 'ArrayBuffer') {
|
setAdd(buffers, value);
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continue;
|
}
|
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if (PROPER_STRUCTURED_CLONE_TRANSFER) {
|
transferred = nativeStructuredClone(value, { transfer: [value] });
|
} else switch (type) {
|
case 'ImageBitmap':
|
C = globalThis.OffscreenCanvas;
|
if (!isConstructor(C)) throwUnpolyfillable(type, TRANSFERRING);
|
try {
|
canvas = new C(value.width, value.height);
|
context = canvas.getContext('bitmaprenderer');
|
context.transferFromImageBitmap(value);
|
transferred = canvas.transferToImageBitmap();
|
} catch (error) { /* empty */ }
|
break;
|
case 'AudioData':
|
case 'VideoFrame':
|
if (!isCallable(value.clone) || !isCallable(value.close)) throwUnpolyfillable(type, TRANSFERRING);
|
try {
|
transferred = value.clone();
|
value.close();
|
} catch (error) { /* empty */ }
|
break;
|
case 'MediaSourceHandle':
|
case 'MessagePort':
|
case 'MIDIAccess':
|
case 'OffscreenCanvas':
|
case 'ReadableStream':
|
case 'RTCDataChannel':
|
case 'TransformStream':
|
case 'WebTransportReceiveStream':
|
case 'WebTransportSendStream':
|
case 'WritableStream':
|
throwUnpolyfillable(type, TRANSFERRING);
|
}
|
|
if (transferred === undefined) throw new DOMException('This object cannot be transferred: ' + type, DATA_CLONE_ERROR);
|
|
mapSet(map, value, transferred);
|
}
|
|
return buffers;
|
};
|
|
var detachBuffers = function (buffers) {
|
setIterate(buffers, function (buffer) {
|
if (PROPER_STRUCTURED_CLONE_TRANSFER) {
|
nativeRestrictedStructuredClone(buffer, { transfer: [buffer] });
|
} else if (isCallable(buffer.transfer)) {
|
buffer.transfer();
|
} else if (detachTransferable) {
|
detachTransferable(buffer);
|
} else {
|
throwUnpolyfillable('ArrayBuffer', TRANSFERRING);
|
}
|
});
|
};
|
|
// `structuredClone` method
|
// https://html.spec.whatwg.org/multipage/structured-data.html#dom-structuredclone
|
$({ global: true, enumerable: true, sham: !PROPER_STRUCTURED_CLONE_TRANSFER, forced: FORCED_REPLACEMENT }, {
|
structuredClone: function structuredClone(value /* , { transfer } */) {
|
var options = validateArgumentsLength(arguments.length, 1) > 1 && !isNullOrUndefined(arguments[1]) ? anObject(arguments[1]) : undefined;
|
var transfer = options ? options.transfer : undefined;
|
var map, buffers;
|
|
if (transfer !== undefined) {
|
map = new Map();
|
buffers = tryToTransfer(transfer, map);
|
}
|
|
var clone = structuredCloneInternal(value, map);
|
|
// since of an issue with cloning views of transferred buffers, we a forced to detach them later
|
// https://github.com/zloirock/core-js/issues/1265
|
if (buffers) detachBuffers(buffers);
|
|
return clone;
|
}
|
});
|
