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485 lines
17 KiB
485 lines
17 KiB
var IS_PURE = require('../internals/is-pure'); |
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var $ = require('../internals/export'); |
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var global = require('../internals/global'); |
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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 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 ERROR_STACK_INSTALLABLE = require('../internals/error-stack-installable'); |
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var V8 = require('../internals/engine-v8-version'); |
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var IS_BROWSER = require('../internals/engine-is-browser'); |
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var IS_DENO = require('../internals/engine-is-deno'); |
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var IS_NODE = require('../internals/engine-is-node'); |
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|
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var Object = global.Object; |
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var Date = global.Date; |
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var Error = global.Error; |
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var EvalError = global.EvalError; |
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var RangeError = global.RangeError; |
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var ReferenceError = global.ReferenceError; |
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var SyntaxError = global.SyntaxError; |
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var TypeError = global.TypeError; |
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var URIError = global.URIError; |
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var PerformanceMark = global.PerformanceMark; |
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var WebAssembly = global.WebAssembly; |
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var CompileError = WebAssembly && WebAssembly.CompileError || Error; |
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var LinkError = WebAssembly && WebAssembly.LinkError || Error; |
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var RuntimeError = WebAssembly && WebAssembly.RuntimeError || Error; |
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var DOMException = getBuiltin('DOMException'); |
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var Set = getBuiltin('Set'); |
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var Map = getBuiltin('Map'); |
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var MapPrototype = Map.prototype; |
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var mapHas = uncurryThis(MapPrototype.has); |
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var mapGet = uncurryThis(MapPrototype.get); |
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var mapSet = uncurryThis(MapPrototype.set); |
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var setAdd = uncurryThis(Set.prototype.add); |
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var objectKeys = getBuiltin('Object', 'keys'); |
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var push = uncurryThis([].push); |
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var booleanValueOf = uncurryThis(true.valueOf); |
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var numberValueOf = uncurryThis(1.0.valueOf); |
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var stringValueOf = uncurryThis(''.valueOf); |
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var getTime = 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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|
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var checkBasicSemantic = function (structuredCloneImplementation) { |
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return !fails(function () { |
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var set1 = new global.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) || typeof number != 'object' || 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); |
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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 global.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 and Safari implementations can't clone errors |
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1556604 |
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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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// no one of current implementations supports new (html/5749) error cloning semantic |
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var nativeStructuredClone = global.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 current 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, kind) { |
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throw new DOMException((kind || 'Cloning') + ' of ' + type + ' cannot be properly polyfilled in this engine', DATA_CLONE_ERROR); |
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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 deep = false; |
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var C, name, cloned, dataTransfer, i, length, keys, key, source, target; |
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|
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switch (type) { |
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case 'Array': |
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cloned = []; |
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deep = true; |
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break; |
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case 'Object': |
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cloned = {}; |
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deep = true; |
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break; |
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case 'Map': |
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cloned = new Map(); |
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deep = true; |
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break; |
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case 'Set': |
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cloned = new Set(); |
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deep = true; |
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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 = getBuiltin('AggregateError')([]); |
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break; |
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case 'EvalError': |
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cloned = EvalError(); |
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break; |
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case 'RangeError': |
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cloned = RangeError(); |
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break; |
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case 'ReferenceError': |
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cloned = ReferenceError(); |
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break; |
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case 'SyntaxError': |
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cloned = SyntaxError(); |
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break; |
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case 'TypeError': |
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cloned = TypeError(); |
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break; |
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case 'URIError': |
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cloned = URIError(); |
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break; |
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case 'CompileError': |
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cloned = CompileError(); |
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break; |
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case 'LinkError': |
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cloned = LinkError(); |
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break; |
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case 'RuntimeError': |
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cloned = RuntimeError(); |
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break; |
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default: |
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cloned = Error(); |
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} |
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deep = true; |
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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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deep = true; |
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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 'Float32Array': |
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case 'Float64Array': |
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case 'BigInt64Array': |
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case 'BigUint64Array': |
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C = global[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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cloned = new C( |
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// this is safe, since arraybuffer cannot have circular references |
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structuredCloneInternal(value.buffer, map), |
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value.byteOffset, |
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type === 'DataView' ? value.byteLength : value.length |
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); |
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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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if (nativeRestrictedStructuredClone) { |
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cloned = nativeRestrictedStructuredClone(value); |
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} else throwUnpolyfillable(type); |
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} |
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break; |
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case 'FileList': |
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C = global.DataTransfer; |
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if (isConstructor(C)) { |
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dataTransfer = new C(); |
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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 if (nativeRestrictedStructuredClone) { |
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cloned = nativeRestrictedStructuredClone(value); |
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} else throwUnpolyfillable(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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if (nativeRestrictedStructuredClone) { |
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cloned = nativeRestrictedStructuredClone(value); |
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} else throwUnpolyfillable(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(booleanValueOf(value)); |
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break; |
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case 'Number': |
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cloned = Object(numberValueOf(value)); |
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break; |
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case 'String': |
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cloned = Object(stringValueOf(value)); |
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break; |
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case 'Date': |
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cloned = new Date(getTime(value)); |
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break; |
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case 'ArrayBuffer': |
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C = global.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 (!C && typeof value.slice != 'function') throwUnpolyfillable(type); |
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// detached buffers throws in `DataView` and `.slice` |
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try { |
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if (typeof value.slice == 'function') { |
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cloned = value.slice(0); |
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} else { |
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length = value.byteLength; |
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cloned = new ArrayBuffer(length); |
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source = new C(value); |
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target = new C(cloned); |
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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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} break; |
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case 'SharedArrayBuffer': |
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// SharedArrayBuffer should use shared memory, we can't polyfill it, so return the original |
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cloned = 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 = global[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 = global[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 = global[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 'File': |
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try { |
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cloned = new File([value], value.name, value); |
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} catch (error) { |
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throwUnpolyfillable(type); |
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} break; |
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case 'CryptoKey': |
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case 'GPUCompilationMessage': |
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case 'GPUCompilationInfo': |
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case 'ImageBitmap': |
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case 'RTCCertificate': |
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case 'WebAssembly.Module': |
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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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} |
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mapSet(map, value, cloned); |
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|
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if (deep) 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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} |
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if (name == 'AggregateError') { |
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cloned.errors = structuredCloneInternal(value.errors, map); |
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} // break omitted |
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case 'DOMException': |
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if (ERROR_STACK_INSTALLABLE) { |
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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 PROPER_TRANSFER = nativeStructuredClone && !fails(function () { |
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// prevent V8 ArrayBufferDetaching protector cell invalidation and performance degradation |
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// https://github.com/zloirock/core-js/issues/679 |
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if ((IS_DENO && V8 > 92) || (IS_NODE && V8 > 94) || (IS_BROWSER && V8 > 97)) return false; |
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var buffer = new ArrayBuffer(8); |
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var clone = nativeStructuredClone(buffer, { transfer: [buffer] }); |
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return buffer.byteLength != 0 || clone.byteLength != 8; |
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}); |
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var tryToTransfer = function (rawTransfer, map) { |
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if (!isObject(rawTransfer)) throw 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 value, type, C, transferredArray, transferred, canvas, context; |
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|
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if (PROPER_TRANSFER) { |
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transferredArray = nativeStructuredClone(transfer, { transfer: transfer }); |
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while (i < length) mapSet(map, transfer[i], transferredArray[i++]); |
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} else while (i < length) { |
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value = transfer[i++]; |
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if (mapHas(map, value)) throw new DOMException('Duplicate transferable', DATA_CLONE_ERROR); |
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|
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type = classof(value); |
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|
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switch (type) { |
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case 'ImageBitmap': |
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C = global.OffscreenCanvas; |
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if (!isConstructor(C)) throwUnpolyfillable(type, TRANSFERRING); |
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try { |
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canvas = new C(value.width, value.height); |
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context = canvas.getContext('bitmaprenderer'); |
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context.transferFromImageBitmap(value); |
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transferred = canvas.transferToImageBitmap(); |
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} catch (error) { /* empty */ } |
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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) || !isCallable(value.close)) throwUnpolyfillable(type, TRANSFERRING); |
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try { |
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transferred = value.clone(); |
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value.close(); |
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} catch (error) { /* empty */ } |
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break; |
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case 'ArrayBuffer': |
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case 'MessagePort': |
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case 'OffscreenCanvas': |
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case 'ReadableStream': |
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case 'TransformStream': |
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case 'WritableStream': |
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throwUnpolyfillable(type, TRANSFERRING); |
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} |
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|
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if (transferred === undefined) throw new DOMException('This object cannot be transferred: ' + type, DATA_CLONE_ERROR); |
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mapSet(map, value, transferred); |
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} |
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}; |
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|
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$({ global: true, enumerable: true, sham: !PROPER_TRANSFER, forced: FORCED_REPLACEMENT }, { |
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structuredClone: function structuredClone(value /* , { transfer } */) { |
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var options = validateArgumentsLength(arguments.length, 1) > 1 && arguments[1] != null ? anObject(arguments[1]) : undefined; |
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var transfer = options ? options.transfer : undefined; |
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var map; |
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|
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if (transfer !== undefined) { |
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map = new Map(); |
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tryToTransfer(transfer, map); |
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} |
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|
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return structuredCloneInternal(value, map); |
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} |
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});
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