 | AggregateError50 tests/AggregateError/ | 74% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 96%Hermes: 0%QuickJS: 96%engine262: 96% |
| Array.prototype.flat28 tests/Array.prototype.flat/ | 86% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 86%QuickJS: 100%engine262: 100% |
| Array.prototype.flatMap35 tests/Array.prototype.flatMap/ | 83% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 66%QuickJS: 100%engine262: 100% |
| Atomic Operations716 tests/Atomics/ | 34% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 73%V8: 66%Moddable XS: 65%Hermes: 0%QuickJS: 66%engine262: 0% |
| Atomics.waitAsync198 tests/Atomics.waitAsync/ | 2% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 4%V8: 4%Moddable XS: 4%Hermes: 0%QuickJS: 4%engine262: 0% |
| BigInt2,365 tests/BigInt/ | 62% ChakraCore: 5%JavaScriptCore: 27%SpiderMonkey: 94%V8: 93%Moddable XS: 94%Hermes: 4%QuickJS: 94%engine262: 87% |
| Class Fields Private1,811 tests/class-fields-private/ | 62% ChakraCore: 39%JavaScriptCore: 40%SpiderMonkey: 40%V8: 100%Moddable XS: 100%Hermes: 40%QuickJS: 100%engine262: 40% |
| Class Fields3,534 tests/class-fields-public/ | 50% ChakraCore: 13%JavaScriptCore: 32%SpiderMonkey: 32%V8: 100%Moddable XS: 100%Hermes: 13%QuickJS: 100%engine262: 13% |
| Class Private Methods and Getter/Setters3,315 tests/class-methods-private/ | 50% ChakraCore: 21%JavaScriptCore: 21%SpiderMonkey: 21%V8: 100%Moddable XS: 100%Hermes: 21%QuickJS: 100%engine262: 21% |
| Class Static Fields Private679 tests/class-static-fields-private/ | 40% ChakraCore: 4%JavaScriptCore: 4%SpiderMonkey: 4%V8: 100%Moddable XS: 100%Hermes: 4%QuickJS: 100%engine262: 4% |
| Class Static Fields Public144 tests/class-static-fields-public/ | 56% ChakraCore: 24%JavaScriptCore: 22%SpiderMonkey: 61%V8: 100%Moddable XS: 100%Hermes: 22%QuickJS: 100%engine262: 22% |
| Class Static Methods Private2,927 tests/class-static-methods-private/ | 44% ChakraCore: 11%JavaScriptCore: 11%SpiderMonkey: 11%V8: 100%Moddable XS: 100%Hermes: 11%QuickJS: 100%engine262: 11% |
| Nullish Coalescing Expression48 tests/coalesce-expression/ | 87% ChakraCore: 17%JavaScriptCore: 100%SpiderMonkey: 96%V8: 96%Moddable XS: 100%Hermes: 96%QuickJS: 96%engine262: 96% |
| Dynamic Import1,046 tests/dynamic-import/ | 70% ChakraCore: 23%JavaScriptCore: 84%SpiderMonkey: 83%V8: 78%Moddable XS: 90%Hermes: 22%QuickJS: 88%engine262: 89% |
| `export * as namespace from module`38 tests/export-star-as-namespace-from-module/ | 52% ChakraCore: 47%JavaScriptCore: 21%SpiderMonkey: 21%V8: 95%Moddable XS: 95%Hermes: 21%QuickJS: 95%engine262: 21% |
| Global this4 tests/globalThis/ | 88% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 100%QuickJS: 100%engine262: 100% |
| Hashbang Grammar35 tests/hashbang/ | 86% ChakraCore: 63%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 60%QuickJS: 100%engine262: 66% |
| import.meta46 tests/import.meta/ | 85% ChakraCore: 43%JavaScriptCore: 83%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 57%QuickJS: 100%engine262: 96% |
| Intl.DateTimeFormat: dateStyle and timeStyle options20 tests/Intl.DateTimeFormat-datetimestyle/ | 28% ChakraCore: 10%JavaScriptCore: 10%SpiderMonkey: 100%V8: 100%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.DateTimeFormat-dayPeriod24 tests/Intl.DateTimeFormat-dayPeriod/ | 16% ChakraCore: 8%JavaScriptCore: 8%SpiderMonkey: 100%V8: 8%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.DateTimeFormat-fractionalSecondDigits20 tests/Intl.DateTimeFormat-fractionalSecondDigits/ | 24% ChakraCore: 10%JavaScriptCore: 10%SpiderMonkey: 80%V8: 90%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.DisplayNames88 tests/Intl.DisplayNames/ | 15% ChakraCore: 7%JavaScriptCore: 7%SpiderMonkey: 7%V8: 100%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.ListFormat164 tests/Intl.ListFormat/ | 25% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 100%V8: 100%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.Locale204 tests/Intl.Locale/ | 35% ChakraCore: 0%JavaScriptCore: 83%SpiderMonkey: 100%V8: 96%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.NumberFormat Unified API134 tests/Intl.NumberFormat-unified/ | 25% ChakraCore: 3%JavaScriptCore: 3%SpiderMonkey: 100%V8: 97%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.RelativeTimeFormat156 tests/Intl.RelativeTimeFormat/ | 35% ChakraCore: 0%JavaScriptCore: 88%SpiderMonkey: 92%V8: 100%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| Intl.Segmenter112 tests/Intl.Segmenter/ | 0% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 0%Moddable XS: 0%Hermes: 0%QuickJS: 0%engine262: 0% |
| ECMAScript ⊃ JSON8 tests/json-superset/ | 75% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 0%QuickJS: 100%engine262: 100% |
| Logical Assignment Operators90 tests/logical-assignment-operators/ | 55% ChakraCore: 20%JavaScriptCore: 97%SpiderMonkey: 93%V8: 93%Moddable XS: 20%Hermes: 20%QuickJS: 20%engine262: 80% |
| Numeric Separator Literal318 tests/numeric-separator-literal/ | 88% ChakraCore: 68%JavaScriptCore: 100%SpiderMonkey: 100%V8: 99%Moddable XS: 100%Hermes: 69%QuickJS: 100%engine262: 69% |
| Object.fromEntries48 tests/Object.fromEntries/ | 88% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 100%QuickJS: 100%engine262: 100% |
| Optional Catch Binding10 tests/optional-catch-binding/ | 88% ChakraCore: 20%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 80%QuickJS: 100%engine262: 100% |
| Optional Chaining90 tests/optional-chaining/ | 83% ChakraCore: 42%JavaScriptCore: 89%SpiderMonkey: 89%V8: 96%Moddable XS: 100%Hermes: 67%QuickJS: 91%engine262: 91% |
| Promise.allSettled196 tests/Promise.allSettled/ | 73% ChakraCore: 2%JavaScriptCore: 100%SpiderMonkey: 94%V8: 94%Moddable XS: 98%Hermes: 0%QuickJS: 98%engine262: 98% |
| Promise.any172 tests/Promise.any/ | 74% ChakraCore: 2%JavaScriptCore: 100%SpiderMonkey: 98%V8: 98%Moddable XS: 98%Hermes: 0%QuickJS: 98%engine262: 98% |
| Promise.prototype.finally52 tests/Promise.prototype.finally/ | 84% ChakraCore: 88%JavaScriptCore: 88%SpiderMonkey: 96%V8: 96%Moddable XS: 100%Hermes: 0%QuickJS: 100%engine262: 100% |
| proxy-missing-checks6 tests/proxy-missing-checks/ | 75% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 0%QuickJS: 100%engine262: 100% |
| RegExp s (dotAll) flag34 tests/regexp-dotall/ | 83% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 82%Hermes: 88%QuickJS: 100%engine262: 94% |
| RegExp lookBehind38 tests/regexp-lookbehind/ | 74% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 95%QuickJS: 100%engine262: 100% |
| RegExp Match Array Indices28 tests/regexp-match-indices/ | 23% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 0%Moddable XS: 86%Hermes: 0%QuickJS: 0%engine262: 100% |
| RegExp named groups capturing198 tests/regexp-named-groups/ | 79% ChakraCore: 60%JavaScriptCore: 93%SpiderMonkey: 94%V8: 39%Moddable XS: 94%Hermes: 59%QuickJS: 94%engine262: 97% |
| RegExp Unicode Property Escapes1,092 tests/regexp-unicode-property-escapes/ | 57% ChakraCore: 24%JavaScriptCore: 76%SpiderMonkey: 100%V8: 74%Moddable XS: 26%Hermes: 26%QuickJS: 100%engine262: 26% |
| Shared Memory774 tests/SharedArrayBuffer/ | 39% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 79%V8: 79%Moddable XS: 77%Hermes: 0%QuickJS: 79%engine262: 0% |
| String Trimming104 tests/string-trimming/ | 87% ChakraCore: 8%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 100%QuickJS: 100%engine262: 85% |
| String.prototype.matchAll30 tests/String.prototype.matchAll/ | 71% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 93%V8: 93%Moddable XS: 93%Hermes: 0%QuickJS: 93%engine262: 93% |
| String.prototype.replaceAll82 tests/String.prototype.replaceAll/ | 73% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 98%V8: 98%Moddable XS: 98%Hermes: 0%QuickJS: 98%engine262: 98% |
| Async Iteration and Generators1,076 tests/Symbol.asyncIterator/ | 63% ChakraCore: 0%JavaScriptCore: 67%SpiderMonkey: 67%V8: 100%Moddable XS: 99%Hermes: 0%QuickJS: 100%engine262: 67% |
| Symbol.prototype.description14 tests/Symbol.prototype.description/ | 79% ChakraCore: 14%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 14%QuickJS: 100%engine262: 100% |
| Tail Call Optimization42 tests/tail-call-optimization/ | 28% ChakraCore: 17%JavaScriptCore: 71%SpiderMonkey: 19%V8: 19%Moddable XS: 98%Hermes: 0%QuickJS: 0%engine262: 0% |
| Top Level Await480 tests/top-level-await/ | 37% ChakraCore: 86%JavaScriptCore: 3%SpiderMonkey: 3%V8: 3%Moddable XS: 100%Hermes: 3%QuickJS: 3%engine262: 100% |
| Well-formed JSON.stringify2 tests/well-formed-json-stringify/ | 75% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100%Hermes: 0%QuickJS: 100%engine262: 100% |
All Features
ChakraCoreJavaScriptCoreSpiderMonkeyV8Moddable XSHermesQuickJSengine262
