 | AggregateError62 tests/AggregateError/ | 85% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 97%engine262: 100% |
| Arbitrary module namespace names32 tests/arbitrary-module-namespace-names/ | 71% ChakraCore: 56%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 44%QuickJS: 44%engine262: 56% |
| Array.prototype.flat30 tests/Array.prototype.flat/ | 86% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Array.prototype.flatMap39 tests/Array.prototype.flatMap/ | 86% ChakraCore: 5%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 97%QuickJS: 100%engine262: 100% |
| Atomic Operations740 tests/Atomics/ | 55% ChakraCore: 0%JavaScriptCore: 72%SpiderMonkey: 72%V8: 99%Moddable XS: 71%QuickJS: 72%engine262: 0% |
| Atomics.waitAsync200 tests/Atomics.waitAsync/ | 14% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| BigInt3,359 tests/BigInt/ | 60% ChakraCore: 3%JavaScriptCore: 71%SpiderMonkey: 70%V8: 74%Moddable XS: 72%QuickJS: 69%engine262: 63% |
| Class Fields Private2,227 tests/class-fields-private/ | 90% ChakraCore: 34%JavaScriptCore: 99%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 98%engine262: 97% |
| Class Fields4,098 tests/class-fields-public/ | 87% ChakraCore: 14%JavaScriptCore: 99%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 99% |
| Class Private Methods and Getter/Setters3,401 tests/class-methods-private/ | 88% ChakraCore: 20%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 99%engine262: 100% |
| Class Static Fields Private687 tests/class-static-fields-private/ | 86% ChakraCore: 5%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Class Static Fields Public424 tests/class-static-fields-public/ | 86% ChakraCore: 14%JavaScriptCore: 95%SpiderMonkey: 100%V8: 100%Moddable XS: 98%QuickJS: 97%engine262: 100% |
| Class Static Methods Private3,009 tests/class-static-methods-private/ | 87% ChakraCore: 11%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Nullish Coalescing Expression50 tests/coalesce-expression/ | 82% ChakraCore: 16%JavaScriptCore: 100%SpiderMonkey: 96%V8: 96%Moddable XS: 96%QuickJS: 96%engine262: 76% |
| Dynamic Import1,128 tests/dynamic-import/ | 68% ChakraCore: 18%JavaScriptCore: 86%SpiderMonkey: 76%V8: 73%Moddable XS: 68%QuickJS: 79%engine262: 74% |
| `export * as namespace from module`38 tests/export-star-as-namespace-from-module/ | 77% ChakraCore: 47%JavaScriptCore: 95%SpiderMonkey: 95%V8: 95%Moddable XS: 42%QuickJS: 95%engine262: 74% |
| FinalizationRegistry.prototype.cleanupSome32 tests/FinalizationRegistry.prototype.cleanupSome/ | 42% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 94%V8: 0%Moddable XS: 100%QuickJS: 0%engine262: 100% |
| Global this145 tests/globalThis/ | 68% ChakraCore: 13%JavaScriptCore: 54%SpiderMonkey: 88%V8: 66%Moddable XS: 86%QuickJS: 86%engine262: 86% |
| Hashbang Grammar35 tests/hashbang/ | 93% ChakraCore: 63%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 91% |
| import.meta46 tests/import.meta/ | 83% ChakraCore: 43%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 70%QuickJS: 100%engine262: 70% |
| Intl.DateTimeFormat: dateStyle and timeStyle options20 tests/Intl.DateTimeFormat-datetimestyle/ | 44% ChakraCore: 10%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.DateTimeFormat-dayPeriod24 tests/Intl.DateTimeFormat-dayPeriod/ | 44% ChakraCore: 8%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.DateTimeFormat-fractionalSecondDigits20 tests/Intl.DateTimeFormat-fractionalSecondDigits/ | 44% ChakraCore: 10%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.DisplayNames90 tests/Intl.DisplayNames/ | 44% ChakraCore: 7%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.ListFormat162 tests/Intl.ListFormat/ | 43% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.Locale282 tests/Intl.Locale/ | 39% ChakraCore: 0%JavaScriptCore: 96%SpiderMonkey: 76%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.NumberFormat Unified API134 tests/Intl.NumberFormat-unified/ | 43% ChakraCore: 4%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.RelativeTimeFormat158 tests/Intl.RelativeTimeFormat/ | 43% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| Intl.Segmenter156 tests/Intl.Segmenter/ | 29% ChakraCore: 1%JavaScriptCore: 100%SpiderMonkey: 3%V8: 100%Moddable XS: 0%QuickJS: 0%engine262: 0% |
| ECMAScript ⊃ JSON8 tests/json-superset/ | 86% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Legacy RegExp features52 tests/legacy-regexp/ | 15% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 0%V8: 4%Moddable XS: 0%QuickJS: 0%engine262: 4% |
| Logical Assignment Operators192 tests/logical-assignment-operators/ | 82% ChakraCore: 9%JavaScriptCore: 96%SpiderMonkey: 95%V8: 98%Moddable XS: 91%QuickJS: 97%engine262: 90% |
| Numeric Separator Literal318 tests/numeric-separator-literal/ | 90% ChakraCore: 68%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 64% |
| Object.fromEntries50 tests/Object.fromEntries/ | 86% ChakraCore: 4%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Optional Catch Binding10 tests/optional-catch-binding/ | 86% ChakraCore: 20%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 80% |
| Optional Chaining112 tests/optional-chaining/ | 87% ChakraCore: 48%JavaScriptCore: 100%SpiderMonkey: 98%V8: 98%Moddable XS: 98%QuickJS: 98%engine262: 66% |
| Promise.allSettled204 tests/Promise.allSettled/ | 84% ChakraCore: 3%JavaScriptCore: 100%SpiderMonkey: 94%V8: 94%Moddable XS: 94%QuickJS: 100%engine262: 100% |
| Promise.any184 tests/Promise.any/ | 85% ChakraCore: 3%JavaScriptCore: 100%SpiderMonkey: 98%V8: 98%Moddable XS: 98%QuickJS: 100%engine262: 100% |
| Promise.prototype.finally56 tests/Promise.prototype.finally/ | 96% ChakraCore: 82%JavaScriptCore: 100%SpiderMonkey: 96%V8: 96%Moddable XS: 96%QuickJS: 100%engine262: 100% |
| proxy-missing-checks6 tests/proxy-missing-checks/ | 86% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| RegExp s (dotAll) flag34 tests/regexp-dotall/ | 74% ChakraCore: 0%JavaScriptCore: 94%SpiderMonkey: 94%V8: 88%Moddable XS: 82%QuickJS: 71%engine262: 88% |
| RegExp lookBehind38 tests/regexp-lookbehind/ | 71% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 95% |
| RegExp Match Array Indices56 tests/regexp-match-indices/ | 68% ChakraCore: 4%JavaScriptCore: 96%SpiderMonkey: 96%V8: 93%Moddable XS: 93%QuickJS: 4%engine262: 93% |
| RegExp named groups capturing200 tests/regexp-named-groups/ | 91% ChakraCore: 59%JavaScriptCore: 98%SpiderMonkey: 99%V8: 100%Moddable XS: 99%QuickJS: 92%engine262: 92% |
| RegExp Unicode Property Escapes1,296 tests/regexp-unicode-property-escapes/ | 69% ChakraCore: 24%JavaScriptCore: 90%SpiderMonkey: 90%V8: 90%Moddable XS: 90%QuickJS: 73%engine262: 26% |
| Shared Memory904 tests/SharedArrayBuffer/ | 55% ChakraCore: 0%JavaScriptCore: 71%SpiderMonkey: 71%V8: 90%Moddable XS: 79%QuickJS: 71%engine262: 0% |
| String Trimming108 tests/string-trimming/ | 85% ChakraCore: 11%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 85% |
| String.prototype.matchAll32 tests/String.prototype.matchAll/ | 82% ChakraCore: 6%JavaScriptCore: 94%SpiderMonkey: 94%V8: 94%Moddable XS: 94%QuickJS: 100%engine262: 94% |
| String.prototype.replaceAll82 tests/String.prototype.replaceAll/ | 84% ChakraCore: 0%JavaScriptCore: 98%SpiderMonkey: 98%V8: 98%Moddable XS: 98%QuickJS: 100%engine262: 98% |
| Async Iteration and Generators1,076 tests/Symbol.asyncIterator/ | 86% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Symbol.prototype.description16 tests/Symbol.prototype.description/ | 88% ChakraCore: 13%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
| Tail Call Optimization35 tests/tail-call-optimization/ | 16% ChakraCore: 3%JavaScriptCore: 89%SpiderMonkey: 0%V8: 0%Moddable XS: 14%QuickJS: 3%engine262: 3% |
| Top Level Await506 tests/top-level-await/ | 69% ChakraCore: 82%JavaScriptCore: 98%SpiderMonkey: 100%V8: 100%Moddable XS: 4%QuickJS: 4%engine262: 98% |
| Well-formed JSON.stringify2 tests/well-formed-json-stringify/ | 86% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%QuickJS: 100%engine262: 100% |
All Features
ChakraCoreJavaScriptCoreSpiderMonkeyV8Moddable XSQuickJSengine262
