// This file was automatically generated by "js_table.ts" package compat type Engine uint8 const ( Chrome Engine = iota Deno Edge ES Firefox Hermes IE IOS Node Opera Rhino Safari ) func (e Engine) String() string { switch e { case Chrome: return "chrome" case Deno: return "deno" case Edge: return "edge" case ES: return "es" case Firefox: return "firefox" case Hermes: return "hermes" case IE: return "ie" case IOS: return "ios" case Node: return "node" case Opera: return "opera" case Rhino: return "rhino" case Safari: return "safari" } return "" } func (e Engine) IsBrowser() bool { switch e { case Chrome, Edge, Firefox, IE, IOS, Opera, Safari: return true } return false } type JSFeature uint64 const ( ArbitraryModuleNamespaceNames JSFeature = 1 << iota ArraySpread Arrow AsyncAwait AsyncGenerator Bigint Class ClassField ClassPrivateAccessor ClassPrivateBrandCheck ClassPrivateField ClassPrivateMethod ClassPrivateStaticAccessor ClassPrivateStaticField ClassPrivateStaticMethod ClassStaticBlocks ClassStaticField ConstAndLet Decorators DefaultArgument Destructuring DynamicImport ExponentOperator ExportStarAs ForAwait ForOf FromBase64 FunctionNameConfigurable FunctionOrClassPropertyAccess Generator Hashbang ImportAssertions ImportAttributes ImportDefer ImportMeta ImportSource InlineScript LogicalAssignment NestedRestBinding NewTarget NodeColonPrefixImport NodeColonPrefixRequire NullishCoalescing ObjectAccessors ObjectExtensions ObjectRestSpread OptionalCatchBinding OptionalChain RegexpDotAllFlag RegexpLookbehindAssertions RegexpMatchIndices RegexpNamedCaptureGroups RegexpSetNotation RegexpStickyAndUnicodeFlags RegexpUnicodePropertyEscapes RestArgument TemplateLiteral TopLevelAwait TypeofExoticObjectIsObject UnicodeEscapes Using ) var StringToJSFeature = map[string]JSFeature{ "arbitrary-module-namespace-names": ArbitraryModuleNamespaceNames, "array-spread": ArraySpread, "arrow": Arrow, "async-await": AsyncAwait, "async-generator": AsyncGenerator, "bigint": Bigint, "class": Class, "class-field": ClassField, "class-private-accessor": ClassPrivateAccessor, "class-private-brand-check": ClassPrivateBrandCheck, "class-private-field": ClassPrivateField, "class-private-method": ClassPrivateMethod, "class-private-static-accessor": ClassPrivateStaticAccessor, "class-private-static-field": ClassPrivateStaticField, "class-private-static-method": ClassPrivateStaticMethod, "class-static-blocks": ClassStaticBlocks, "class-static-field": ClassStaticField, "const-and-let": ConstAndLet, "decorators": Decorators, "default-argument": DefaultArgument, "destructuring": Destructuring, "dynamic-import": DynamicImport, "exponent-operator": ExponentOperator, "export-star-as": ExportStarAs, "for-await": ForAwait, "for-of": ForOf, "from-base64": FromBase64, "function-name-configurable": FunctionNameConfigurable, "function-or-class-property-access": FunctionOrClassPropertyAccess, "generator": Generator, "hashbang": Hashbang, "import-assertions": ImportAssertions, "import-attributes": ImportAttributes, "import-defer": ImportDefer, "import-meta": ImportMeta, "import-source": ImportSource, "inline-script": InlineScript, "logical-assignment": LogicalAssignment, "nested-rest-binding": NestedRestBinding, "new-target": NewTarget, "node-colon-prefix-import": NodeColonPrefixImport, "node-colon-prefix-require": NodeColonPrefixRequire, "nullish-coalescing": NullishCoalescing, "object-accessors": ObjectAccessors, "object-extensions": ObjectExtensions, "object-rest-spread": ObjectRestSpread, "optional-catch-binding": OptionalCatchBinding, "optional-chain": OptionalChain, "regexp-dot-all-flag": RegexpDotAllFlag, "regexp-lookbehind-assertions": RegexpLookbehindAssertions, "regexp-match-indices": RegexpMatchIndices, "regexp-named-capture-groups": RegexpNamedCaptureGroups, "regexp-set-notation": RegexpSetNotation, "regexp-sticky-and-unicode-flags": RegexpStickyAndUnicodeFlags, "regexp-unicode-property-escapes": RegexpUnicodePropertyEscapes, "rest-argument": RestArgument, "template-literal": TemplateLiteral, "top-level-await": TopLevelAwait, "typeof-exotic-object-is-object": TypeofExoticObjectIsObject, "unicode-escapes": UnicodeEscapes, "using": Using, } func (features JSFeature) Has(feature JSFeature) bool { return (features & feature) != 0 } func (features JSFeature) ApplyOverrides(overrides JSFeature, mask JSFeature) JSFeature { return (features & ^mask) | (overrides & mask) } var jsTable = map[JSFeature]map[Engine][]versionRange{ ArbitraryModuleNamespaceNames: { Chrome: {{start: v{90, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{87, 0, 0}}}, IOS: {{start: v{14, 5, 0}}}, Node: {{start: v{16, 0, 0}}}, Safari: {{start: v{14, 1, 0}}}, }, ArraySpread: { // Note: The latest version of "IE" failed 15 tests including: spread syntax for iterable objects: spreading non-iterables is a runtime error // Note: The latest version of "Rhino" failed 8 tests including: spread syntax for iterable objects: spreading non-iterables is a runtime error Chrome: {{start: v{46, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{13, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{36, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{5, 0, 0}}}, Opera: {{start: v{33, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, Arrow: { // Note: The latest version of "Hermes" failed 3 tests including: arrow functions: lexical "super" binding in constructors // Note: The latest version of "IE" failed 13 tests including: arrow functions: "this" unchanged by call or apply // Note: The latest version of "Rhino" failed 3 tests including: arrow functions: lexical "new.target" binding Chrome: {{start: v{49, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{13, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{45, 0, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{36, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, AsyncAwait: { // Note: The latest version of "Hermes" failed 4 tests including: async functions: async arrow functions // Note: The latest version of "IE" failed 16 tests including: async functions: async arrow functions // Note: The latest version of "Rhino" failed 16 tests including: async functions: async arrow functions Chrome: {{start: v{55, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{15, 0, 0}}}, ES: {{start: v{2017, 0, 0}}}, Firefox: {{start: v{52, 0, 0}}}, IOS: {{start: v{11, 0, 0}}}, Node: {{start: v{7, 6, 0}}}, Opera: {{start: v{42, 0, 0}}}, Safari: {{start: v{11, 0, 0}}}, }, AsyncGenerator: { // Note: The latest version of "Hermes" failed this test: Asynchronous Iterators: async generators // Note: The latest version of "IE" failed this test: Asynchronous Iterators: async generators // Note: The latest version of "Rhino" failed this test: Asynchronous Iterators: async generators Chrome: {{start: v{63, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{57, 0, 0}}}, IOS: {{start: v{12, 0, 0}}}, Node: {{start: v{10, 0, 0}}}, Opera: {{start: v{50, 0, 0}}}, Safari: {{start: v{12, 0, 0}}}, }, Bigint: { // Note: The latest version of "IE" failed this test: BigInt: basic functionality Chrome: {{start: v{67, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2020, 0, 0}}}, Firefox: {{start: v{68, 0, 0}}}, Hermes: {{start: v{0, 12, 0}}}, IOS: {{start: v{14, 0, 0}}}, Node: {{start: v{10, 4, 0}}}, Opera: {{start: v{54, 0, 0}}}, Rhino: {{start: v{1, 7, 14}}}, Safari: {{start: v{14, 0, 0}}}, }, Class: { // Note: The latest version of "Hermes" failed 24 tests including: class: accessor properties // Note: The latest version of "IE" failed 24 tests including: class: accessor properties // Note: The latest version of "Rhino" failed 24 tests including: class: accessor properties Chrome: {{start: v{49, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{13, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{45, 0, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{36, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, ClassField: { // Note: The latest version of "Hermes" failed 2 tests including: instance class fields: computed instance class fields // Note: The latest version of "IE" failed 2 tests including: instance class fields: computed instance class fields // Note: The latest version of "Rhino" failed 2 tests including: instance class fields: computed instance class fields Chrome: {{start: v{73, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{69, 0, 0}}}, IOS: {{start: v{14, 0, 0}}}, Node: {{start: v{12, 0, 0}}}, Opera: {{start: v{60, 0, 0}}}, Safari: {{start: v{14, 0, 0}}}, }, ClassPrivateAccessor: { // Note: The latest version of "Hermes" failed this test: private class methods: private accessor properties // Note: The latest version of "IE" failed this test: private class methods: private accessor properties // Note: The latest version of "Rhino" failed this test: private class methods: private accessor properties Chrome: {{start: v{84, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{84, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{14, 6, 0}}}, Opera: {{start: v{70, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, ClassPrivateBrandCheck: { // Note: The latest version of "Hermes" failed this test: Ergonomic brand checks for private fields // Note: The latest version of "IE" failed this test: Ergonomic brand checks for private fields // Note: The latest version of "Rhino" failed this test: Ergonomic brand checks for private fields Chrome: {{start: v{91, 0, 0}}}, Deno: {{start: v{1, 9, 0}}}, Edge: {{start: v{91, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{16, 9, 0}}}, Opera: {{start: v{77, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, ClassPrivateField: { // Note: The latest version of "Hermes" failed 4 tests including: instance class fields: optional deep private instance class fields access // Note: The latest version of "IE" failed 4 tests including: instance class fields: optional deep private instance class fields access // Note: The latest version of "Rhino" failed 4 tests including: instance class fields: optional deep private instance class fields access Chrome: {{start: v{84, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{84, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{14, 5, 0}}}, Node: {{start: v{14, 6, 0}}}, Opera: {{start: v{70, 0, 0}}}, Safari: {{start: v{14, 1, 0}}}, }, ClassPrivateMethod: { // Note: The latest version of "Hermes" failed this test: private class methods: private instance methods // Note: The latest version of "IE" failed this test: private class methods: private instance methods // Note: The latest version of "Rhino" failed this test: private class methods: private instance methods Chrome: {{start: v{84, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{84, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{14, 6, 0}}}, Opera: {{start: v{70, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, ClassPrivateStaticAccessor: { // Note: The latest version of "Hermes" failed this test: private class methods: private static accessor properties // Note: The latest version of "IE" failed this test: private class methods: private static accessor properties // Note: The latest version of "Rhino" failed this test: private class methods: private static accessor properties Chrome: {{start: v{84, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{84, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{14, 6, 0}}}, Opera: {{start: v{70, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, ClassPrivateStaticField: { // Note: The latest version of "Hermes" failed this test: static class fields: private static class fields // Note: The latest version of "IE" failed this test: static class fields: private static class fields // Note: The latest version of "Rhino" failed this test: static class fields: private static class fields Chrome: {{start: v{74, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{14, 5, 0}}}, Node: {{start: v{12, 0, 0}}}, Opera: {{start: v{62, 0, 0}}}, Safari: {{start: v{14, 1, 0}}}, }, ClassPrivateStaticMethod: { // Note: The latest version of "Hermes" failed this test: private class methods: private static methods // Note: The latest version of "IE" failed this test: private class methods: private static methods // Note: The latest version of "Rhino" failed this test: private class methods: private static methods Chrome: {{start: v{84, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{84, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{90, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{14, 6, 0}}}, Opera: {{start: v{70, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, ClassStaticBlocks: { Chrome: {{start: v{91, 0, 0}}}, Deno: {{start: v{1, 14, 0}}}, Edge: {{start: v{94, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{93, 0, 0}}}, IOS: {{start: v{16, 4, 0}}}, Node: {{start: v{16, 11, 0}}}, Opera: {{start: v{80, 0, 0}}}, Safari: {{start: v{16, 4, 0}}}, }, ClassStaticField: { // Note: The latest version of "Hermes" failed 2 tests including: static class fields: computed static class fields // Note: The latest version of "IE" failed 2 tests including: static class fields: computed static class fields // Note: The latest version of "Rhino" failed 2 tests including: static class fields: computed static class fields Chrome: {{start: v{73, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{75, 0, 0}}}, IOS: {{start: v{14, 5, 0}}}, Node: {{start: v{12, 0, 0}}}, Opera: {{start: v{60, 0, 0}}}, Safari: {{start: v{14, 1, 0}}}, }, ConstAndLet: { // Note: The latest version of "Hermes" failed 20 tests including: const: for loop statement scope // Note: The latest version of "IE" failed 6 tests including: const: for-in loop iteration scope // Note: The latest version of "Rhino" failed 21 tests including: const: cannot be in statements Chrome: {{start: v{49, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{14, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{51, 0, 0}}}, IOS: {{start: v{11, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{36, 0, 0}}}, Safari: {{start: v{11, 0, 0}}}, }, Decorators: {}, DefaultArgument: { // Note: The latest version of "Hermes" failed 2 tests including: default function parameters: separate scope // Note: The latest version of "IE" failed 7 tests including: default function parameters: arguments object interaction // Note: The latest version of "Rhino" failed 2 tests including: default function parameters: separate scope Chrome: {{start: v{49, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{14, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{53, 0, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{36, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, Destructuring: { // Note: The latest version of "Hermes" failed 3 tests including: destructuring, declarations: defaults, let temporal dead zone // Note: The latest version of "IE" failed 73 tests including: destructuring, assignment: chained iterable destructuring // Note: The latest version of "Rhino" failed 23 tests including: destructuring, assignment: computed properties Chrome: {{start: v{51, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{18, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{53, 0, 0}}}, IOS: {{start: v{14, 5, 0}}}, Node: {{start: v{6, 5, 0}}}, Opera: {{start: v{38, 0, 0}}}, Safari: {{start: v{14, 1, 0}}}, }, DynamicImport: { Chrome: {{start: v{63, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{67, 0, 0}}}, IOS: {{start: v{11, 0, 0}}}, Node: {{start: v{12, 20, 0}, end: v{13, 0, 0}}, {start: v{13, 2, 0}}}, Opera: {{start: v{50, 0, 0}}}, Safari: {{start: v{11, 1, 0}}}, }, ExponentOperator: { // Note: The latest version of "IE" failed 3 tests including: exponentiation (**) operator: assignment Chrome: {{start: v{52, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{14, 0, 0}}}, ES: {{start: v{2016, 0, 0}}}, Firefox: {{start: v{52, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 3, 0}}}, Node: {{start: v{7, 0, 0}}}, Opera: {{start: v{39, 0, 0}}}, Rhino: {{start: v{1, 7, 14}}}, Safari: {{start: v{10, 1, 0}}}, }, ExportStarAs: { Chrome: {{start: v{72, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2020, 0, 0}}}, Firefox: {{start: v{80, 0, 0}}}, IOS: {{start: v{14, 5, 0}}}, Node: {{start: v{13, 2, 0}}}, Opera: {{start: v{60, 0, 0}}}, Safari: {{start: v{14, 1, 0}}}, }, ForAwait: { // Note: The latest version of "Hermes" failed this test: Asynchronous Iterators: for-await-of loops // Note: The latest version of "IE" failed this test: Asynchronous Iterators: for-await-of loops // Note: The latest version of "Rhino" failed this test: Asynchronous Iterators: for-await-of loops Chrome: {{start: v{63, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{57, 0, 0}}}, IOS: {{start: v{12, 0, 0}}}, Node: {{start: v{10, 0, 0}}}, Opera: {{start: v{50, 0, 0}}}, Safari: {{start: v{12, 0, 0}}}, }, ForOf: { // Note: The latest version of "IE" failed 9 tests including: for..of loops: iterator closing, break // Note: The latest version of "Rhino" failed 2 tests including: for..of loops: iterator closing, break Chrome: {{start: v{51, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{15, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{53, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{6, 5, 0}}}, Opera: {{start: v{38, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, FromBase64: { Chrome: {{start: v{140, 0, 0}}}, Deno: {{start: v{2, 5, 0}}}, Edge: {{start: v{140, 0, 0}}}, Firefox: {{start: v{133, 0, 0}}}, IOS: {{start: v{18, 2, 0}}}, Node: {{start: v{25, 0, 0}}}, Opera: {{start: v{124, 0, 0}}}, Safari: {{start: v{18, 2, 0}}}, }, FunctionNameConfigurable: { // Note: The latest version of "IE" failed this test: function "name" property: isn't writable, is configurable Chrome: {{start: v{43, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{12, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{38, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{4, 0, 0}}}, Opera: {{start: v{30, 0, 0}}}, Rhino: {{start: v{1, 7, 15}}}, Safari: {{start: v{10, 0, 0}}}, }, FunctionOrClassPropertyAccess: { Chrome: {{start: v{0, 0, 0}}}, Deno: {{start: v{0, 0, 0}}}, Edge: {{start: v{0, 0, 0}}}, ES: {{start: v{0, 0, 0}}}, Firefox: {{start: v{0, 0, 0}}}, Hermes: {{start: v{0, 0, 0}}}, IE: {{start: v{0, 0, 0}}}, IOS: {{start: v{0, 0, 0}}}, Node: {{start: v{0, 0, 0}}}, Opera: {{start: v{0, 0, 0}}}, Rhino: {{start: v{0, 0, 0}}}, Safari: {{start: v{16, 3, 0}}}, }, Generator: { // Note: The latest version of "Hermes" failed 3 tests including: generators: computed shorthand generators, classes // Note: The latest version of "IE" failed 27 tests including: generators: %GeneratorPrototype% // Note: The latest version of "Rhino" failed 5 tests including: generators: %GeneratorPrototype% prototype chain Chrome: {{start: v{50, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{13, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{53, 0, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{37, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, Hashbang: { // Note: The latest version of "IE" failed this test: Hashbang Grammar Chrome: {{start: v{74, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2023, 0, 0}}}, Firefox: {{start: v{67, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{13, 4, 0}}}, Node: {{start: v{12, 0, 0}}}, Opera: {{start: v{62, 0, 0}}}, Rhino: {{start: v{1, 7, 15}}}, Safari: {{start: v{13, 1, 0}}}, }, ImportAssertions: { Chrome: {{start: v{91, 0, 0}}}, Deno: {{start: v{1, 17, 0}}}, Edge: {{start: v{91, 0, 0}}}, Node: {{start: v{16, 14, 0}, end: v{22, 0, 0}}}, }, ImportAttributes: { Chrome: {{start: v{123, 0, 0}}}, Deno: {{start: v{1, 37, 0}}}, Edge: {{start: v{123, 0, 0}}}, Firefox: {{start: v{138, 0, 0}}}, IOS: {{start: v{17, 2, 0}}}, Node: {{start: v{18, 20, 0}, end: v{19, 0, 0}}, {start: v{20, 10, 0}}}, Opera: {{start: v{109, 0, 0}}}, Safari: {{start: v{17, 2, 0}}}, }, ImportDefer: {}, ImportMeta: { Chrome: {{start: v{64, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2020, 0, 0}}}, Firefox: {{start: v{62, 0, 0}}}, IOS: {{start: v{12, 0, 0}}}, Node: {{start: v{10, 4, 0}}}, Opera: {{start: v{51, 0, 0}}}, Safari: {{start: v{11, 1, 0}}}, }, ImportSource: {}, InlineScript: {}, LogicalAssignment: { // Note: The latest version of "IE" failed 9 tests including: Logical Assignment: &&= basic support // Note: The latest version of "Rhino" failed 3 tests including: Logical Assignment: &&= setter not unecessarily invoked Chrome: {{start: v{85, 0, 0}}}, Deno: {{start: v{1, 2, 0}}}, Edge: {{start: v{85, 0, 0}}}, ES: {{start: v{2021, 0, 0}}}, Firefox: {{start: v{79, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{14, 0, 0}}}, Node: {{start: v{15, 0, 0}}}, Opera: {{start: v{71, 0, 0}}}, Safari: {{start: v{14, 0, 0}}}, }, NestedRestBinding: { // Note: The latest version of "IE" failed 2 tests including: nested rest destructuring, declarations // Note: The latest version of "Rhino" failed 2 tests including: nested rest destructuring, declarations Chrome: {{start: v{49, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{14, 0, 0}}}, ES: {{start: v{2016, 0, 0}}}, Firefox: {{start: v{47, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 3, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{36, 0, 0}}}, Safari: {{start: v{10, 1, 0}}}, }, NewTarget: { // Note: The latest version of "IE" failed 2 tests including: new.target: assignment is an early error // Note: The latest version of "Rhino" failed 2 tests including: new.target: assignment is an early error Chrome: {{start: v{46, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{14, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{41, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{5, 0, 0}}}, Opera: {{start: v{33, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, NodeColonPrefixImport: { ES: {{start: v{0, 0, 0}}}, Node: {{start: v{12, 20, 0}, end: v{13, 0, 0}}, {start: v{14, 13, 1}}}, }, NodeColonPrefixRequire: { ES: {{start: v{0, 0, 0}}}, Node: {{start: v{14, 18, 0}, end: v{15, 0, 0}}, {start: v{16, 0, 0}}}, }, NullishCoalescing: { // Note: The latest version of "IE" failed this test: nullish coalescing operator (??) Chrome: {{start: v{80, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{80, 0, 0}}}, ES: {{start: v{2020, 0, 0}}}, Firefox: {{start: v{72, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{13, 4, 0}}}, Node: {{start: v{14, 0, 0}}}, Opera: {{start: v{67, 0, 0}}}, Rhino: {{start: v{1, 8, 0}}}, Safari: {{start: v{13, 1, 0}}}, }, ObjectAccessors: { Chrome: {{start: v{5, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{12, 0, 0}}}, ES: {{start: v{5, 0, 0}}}, Firefox: {{start: v{2, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IE: {{start: v{9, 0, 0}}}, IOS: {{start: v{6, 0, 0}}}, Node: {{start: v{0, 4, 0}}}, Opera: {{start: v{10, 10, 0}}}, Rhino: {{start: v{1, 7, 13}}}, Safari: {{start: v{3, 1, 0}}}, }, ObjectExtensions: { // Note: The latest version of "IE" failed 6 tests including: object literal extensions: computed accessors Chrome: {{start: v{44, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{12, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{34, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{4, 0, 0}}}, Opera: {{start: v{31, 0, 0}}}, Rhino: {{start: v{1, 8, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, ObjectRestSpread: { // Note: The latest version of "IE" failed 2 tests including: object rest/spread properties: object rest properties // Note: The latest version of "Rhino" failed this test: object rest/spread properties: object rest properties Chrome: {{start: v{60, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{55, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{11, 3, 0}}}, Node: {{start: v{8, 3, 0}}}, Opera: {{start: v{47, 0, 0}}}, Safari: {{start: v{11, 1, 0}}}, }, OptionalCatchBinding: { // Note: The latest version of "IE" failed 3 tests including: optional catch binding: await // Note: The latest version of "Rhino" failed this test: optional catch binding: await Chrome: {{start: v{66, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2019, 0, 0}}}, Firefox: {{start: v{58, 0, 0}}}, Hermes: {{start: v{0, 12, 0}}}, IOS: {{start: v{11, 3, 0}}}, Node: {{start: v{10, 0, 0}}}, Opera: {{start: v{53, 0, 0}}}, Safari: {{start: v{11, 1, 0}}}, }, OptionalChain: { // Note: The latest version of "IE" failed 5 tests including: optional chaining operator (?.): optional bracket access // Note: The latest version of "Rhino" failed this test: optional chaining operator (?.): spread parameters after optional chaining Chrome: {{start: v{91, 0, 0}}}, Deno: {{start: v{1, 9, 0}}}, Edge: {{start: v{91, 0, 0}}}, ES: {{start: v{2020, 0, 0}}}, Firefox: {{start: v{74, 0, 0}}}, Hermes: {{start: v{0, 12, 0}}}, IOS: {{start: v{13, 4, 0}}}, Node: {{start: v{16, 9, 0}}}, Opera: {{start: v{77, 0, 0}}}, Safari: {{start: v{13, 1, 0}}}, }, RegexpDotAllFlag: { // Note: The latest version of "IE" failed this test: s (dotAll) flag for regular expressions Chrome: {{start: v{62, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{78, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{11, 3, 0}}}, Node: {{start: v{8, 10, 0}}}, Opera: {{start: v{49, 0, 0}}}, Rhino: {{start: v{1, 7, 15}}}, Safari: {{start: v{11, 1, 0}}}, }, RegexpLookbehindAssertions: { // Note: The latest version of "IE" failed this test: RegExp Lookbehind Assertions Chrome: {{start: v{62, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{78, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{16, 4, 0}}}, Node: {{start: v{8, 10, 0}}}, Opera: {{start: v{49, 0, 0}}}, Rhino: {{start: v{1, 9, 0}}}, Safari: {{start: v{16, 4, 0}}}, }, RegexpMatchIndices: { Chrome: {{start: v{90, 0, 0}}}, Deno: {{start: v{1, 8, 0}}}, Edge: {{start: v{90, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{88, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{16, 0, 0}}}, Opera: {{start: v{76, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, RegexpNamedCaptureGroups: { // Note: The latest version of "Hermes" failed this test: RegExp named capture groups // Note: The latest version of "IE" failed this test: RegExp named capture groups Chrome: {{start: v{64, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{78, 0, 0}}}, IOS: {{start: v{11, 3, 0}}}, Node: {{start: v{10, 0, 0}}}, Opera: {{start: v{51, 0, 0}}}, Rhino: {{start: v{1, 9, 0}}}, Safari: {{start: v{11, 1, 0}}}, }, RegexpSetNotation: { ES: {{start: v{2024, 0, 0}}}, }, RegexpStickyAndUnicodeFlags: { // Note: The latest version of "IE" failed 6 tests including: RegExp "y" and "u" flags: "u" flag // Note: The latest version of "Rhino" failed this test: RegExp "y" and "u" flags: "u" flag, case folding Chrome: {{start: v{50, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{13, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{46, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{12, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{37, 0, 0}}}, Safari: {{start: v{12, 0, 0}}}, }, RegexpUnicodePropertyEscapes: { // Note: The latest version of "Chrome" failed 2 tests including: RegExp Unicode Property Escapes: Unicode 16.0 // Note: The latest version of "Edge" failed 2 tests including: RegExp Unicode Property Escapes: Unicode 16.0 // Note: The latest version of "Hermes" failed 8 tests including: RegExp Unicode Property Escapes: Unicode 11 // Note: The latest version of "IE" failed 8 tests including: RegExp Unicode Property Escapes: Unicode 11 // Note: The latest version of "IOS" failed this test: RegExp Unicode Property Escapes: Unicode 17.0 // Note: The latest version of "Node" failed 2 tests including: RegExp Unicode Property Escapes: Unicode 16.0 // Note: The latest version of "Rhino" failed 8 tests including: RegExp Unicode Property Escapes: Unicode 11 // Note: The latest version of "Safari" failed this test: RegExp Unicode Property Escapes: Unicode 17.0 ES: {{start: v{2018, 0, 0}}}, Firefox: {{start: v{147, 0, 0}}}, }, RestArgument: { // Note: The latest version of "Hermes" failed this test: rest parameters: function 'length' property // Note: The latest version of "IE" failed 5 tests including: rest parameters: arguments object interaction // Note: The latest version of "Rhino" failed 2 tests including: rest parameters: arguments object interaction Chrome: {{start: v{47, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{12, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{43, 0, 0}}}, IOS: {{start: v{10, 0, 0}}}, Node: {{start: v{6, 0, 0}}}, Opera: {{start: v{34, 0, 0}}}, Safari: {{start: v{10, 0, 0}}}, }, TemplateLiteral: { // Note: The latest version of "Hermes" failed this test: template literals: TemplateStrings call site caching // Note: The latest version of "IE" failed 7 tests including: template literals: TemplateStrings call site caching Chrome: {{start: v{62, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{79, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{53, 0, 0}}}, IOS: {{start: v{13, 0, 0}}}, Node: {{start: v{8, 10, 0}}}, Opera: {{start: v{49, 0, 0}}}, Rhino: {{start: v{1, 9, 0}}}, Safari: {{start: v{13, 0, 0}}}, }, TopLevelAwait: { Chrome: {{start: v{89, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{89, 0, 0}}}, ES: {{start: v{2022, 0, 0}}}, Firefox: {{start: v{89, 0, 0}}}, IOS: {{start: v{15, 0, 0}}}, Node: {{start: v{14, 8, 0}}}, Opera: {{start: v{75, 0, 0}}}, Safari: {{start: v{15, 0, 0}}}, }, TypeofExoticObjectIsObject: { Chrome: {{start: v{0, 0, 0}}}, Deno: {{start: v{0, 0, 0}}}, Edge: {{start: v{0, 0, 0}}}, ES: {{start: v{2020, 0, 0}}}, Firefox: {{start: v{0, 0, 0}}}, Hermes: {{start: v{0, 0, 0}}}, IOS: {{start: v{0, 0, 0}}}, Node: {{start: v{0, 0, 0}}}, Opera: {{start: v{0, 0, 0}}}, Rhino: {{start: v{0, 0, 0}}}, Safari: {{start: v{0, 0, 0}}}, }, UnicodeEscapes: { // Note: The latest version of "IE" failed 2 tests including: Unicode code point escapes: in identifiers Chrome: {{start: v{44, 0, 0}}}, Deno: {{start: v{1, 0, 0}}}, Edge: {{start: v{12, 0, 0}}}, ES: {{start: v{2015, 0, 0}}}, Firefox: {{start: v{53, 0, 0}}}, Hermes: {{start: v{0, 7, 0}}}, IOS: {{start: v{9, 0, 0}}}, Node: {{start: v{4, 0, 0}}}, Opera: {{start: v{31, 0, 0}}}, Rhino: {{start: v{1, 7, 15}}}, Safari: {{start: v{9, 0, 0}}}, }, Using: { // Note: The latest version of "IE" failed 7 tests including: Explicit Resource Management: AsyncDisposableStack // Note: The latest version of "IOS" failed 7 tests including: Explicit Resource Management: AsyncDisposableStack // Note: The latest version of "Rhino" failed 8 tests including: Explicit Resource Management: AsyncDisposableStack // Note: The latest version of "Safari" failed 7 tests including: Explicit Resource Management: AsyncDisposableStack Chrome: {{start: v{141, 0, 0}}}, Edge: {{start: v{141, 0, 0}}}, Firefox: {{start: v{141, 0, 0}}}, Node: {{start: v{25, 0, 0}}}, }, } // Return all features that are not available in at least one environment func UnsupportedJSFeatures(constraints map[Engine]Semver) (unsupported JSFeature) { for feature, engines := range jsTable { if feature == InlineScript { continue // This is purely user-specified } for engine, version := range constraints { if versionRanges, ok := engines[engine]; !ok || !isVersionSupported(versionRanges, version) { unsupported |= feature } } } return }