 | Array.prototype.flat28 tests/Array.prototype.flat/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Array.prototype.flatMap35 tests/Array.prototype.flatMap/ | 75% ChakraCore: 0%JavaScriptCore: 94%SpiderMonkey: 94%V8: 94%Moddable XS: 94% |
| Atomic Operations486 tests/Atomics/ | 53% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 95%V8: 99%Moddable XS: 71% |
| BigInt2,259 tests/BigInt/ | 59% ChakraCore: 5%JavaScriptCore: 5%SpiderMonkey: 97%V8: 98%Moddable XS: 88% |
| Class Fields Private1,799 tests/class-fields-private/ | 59% ChakraCore: 39%JavaScriptCore: 41%SpiderMonkey: 41%V8: 76%Moddable XS: 100% |
| Class Fields3,514 tests/class-fields-public/ | 44% ChakraCore: 13%JavaScriptCore: 13%SpiderMonkey: 31%V8: 62%Moddable XS: 100% |
| Class Private Methods and Getter/Setters3,307 tests/class-methods-private/ | 36% ChakraCore: 21%JavaScriptCore: 21%SpiderMonkey: 21%V8: 21%Moddable XS: 99% |
| Class Static Fields Private683 tests/class-static-fields-private/ | 40% ChakraCore: 4%JavaScriptCore: 4%SpiderMonkey: 4%V8: 88%Moddable XS: 99% |
| Class Static Fields Public140 tests/class-static-fields-public/ | 48% ChakraCore: 24%JavaScriptCore: 23%SpiderMonkey: 23%V8: 71%Moddable XS: 97% |
| Class Static Methods Private2,931 tests/class-static-methods-private/ | 28% ChakraCore: 11%JavaScriptCore: 11%SpiderMonkey: 11%V8: 11%Moddable XS: 99% |
| Dynamic Import1,034 tests/dynamic-import/ | 66% ChakraCore: 23%JavaScriptCore: 85%SpiderMonkey: 84%V8: 90%Moddable XS: 49% |
| `export * as namespace from module`36 tests/export-star-as-namespace-from-module/ | 51% ChakraCore: 44%JavaScriptCore: 22%SpiderMonkey: 22%V8: 94%Moddable XS: 72% |
| FinalizationGroup102 tests/FinalizationGroup/ | 0% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 0%Moddable XS: 0% |
| Global this4 tests/globalThis/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Hashbang Grammar35 tests/hashbang/ | 93% ChakraCore: 63%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| import.meta46 tests/import.meta/ | 85% ChakraCore: 43%JavaScriptCore: 83%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Intl.DateTimeFormat: dateStyle and timeStyle options16 tests/Intl.DateTimeFormat-datetimestyle/ | 20% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 100%Moddable XS: 0% |
| Intl.DateTimeFormat-dayPeriod24 tests/Intl.DateTimeFormat-dayPeriod/ | 7% ChakraCore: 8%JavaScriptCore: 8%SpiderMonkey: 8%V8: 8%Moddable XS: 0% |
| Intl.DateTimeFormat-fractionalSecondDigits18 tests/Intl.DateTimeFormat-fractionalSecondDigits/ | 9% ChakraCore: 11%JavaScriptCore: 11%SpiderMonkey: 11%V8: 11%Moddable XS: 0% |
| Intl.DateTimeFormat-quarter2 tests/Intl.DateTimeFormat-quarter/ | 0% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 0%Moddable XS: 0% |
| Intl.ListFormat134 tests/Intl.ListFormat/ | 20% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 100%Moddable XS: 0% |
| Intl.Locale196 tests/Intl.Locale/ | 19% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 95%Moddable XS: 0% |
| Intl.NumberFormat Unified API124 tests/Intl.NumberFormat-unified/ | 20% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 2%V8: 100%Moddable XS: 0% |
| Intl.RelativeTimeFormat150 tests/Intl.RelativeTimeFormat/ | 39% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 97%V8: 100%Moddable XS: 0% |
| Intl.Segmenter144 tests/Intl.Segmenter/ | 0% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 0%Moddable XS: 0% |
| ECMAScript ⊃ JSON8 tests/json-superset/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Numeric Separator Literal316 tests/numeric-separator-literal/ | 91% ChakraCore: 68%JavaScriptCore: 87%SpiderMonkey: 100%V8: 99%Moddable XS: 99% |
| Object.fromEntries48 tests/Object.fromEntries/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Optional Catch Binding10 tests/optional-catch-binding/ | 84% ChakraCore: 20%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Promise.allSettled184 tests/Promise.allSettled/ | 58% ChakraCore: 2%JavaScriptCore: 95%SpiderMonkey: 3%V8: 100%Moddable XS: 89% |
| Promise.prototype.finally48 tests/Promise.prototype.finally/ | 90% ChakraCore: 100%JavaScriptCore: 88%SpiderMonkey: 96%V8: 100%Moddable XS: 67% |
| proxy-missing-checks6 tests/proxy-missing-checks/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| RegExp s (dotAll) flag34 tests/regexp-dotall/ | 55% ChakraCore: 0%JavaScriptCore: 94%SpiderMonkey: 0%V8: 100%Moddable XS: 82% |
| RegExp lookBehind38 tests/regexp-lookbehind/ | 39% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 100%Moddable XS: 95% |
| RegExp named groups capturing170 tests/regexp-named-groups/ | 65% ChakraCore: 68%JavaScriptCore: 65%SpiderMonkey: 68%V8: 29%Moddable XS: 94% |
| RegExp Unicode Property Escapes1,076 tests/regexp-unicode-property-escapes/ | 46% ChakraCore: 24%JavaScriptCore: 81%SpiderMonkey: 26%V8: 74%Moddable XS: 26% |
| Shared Memory602 tests/SharedArrayBuffer/ | 55% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 99%V8: 99%Moddable XS: 77% |
| String Trimming104 tests/string-trimming/ | 78% ChakraCore: 8%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 85% |
| String.prototype.matchAll28 tests/String.prototype.matchAll/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Async Iteration and Generators1,068 tests/Symbol.asyncIterator/ | 58% ChakraCore: 0%JavaScriptCore: 67%SpiderMonkey: 67%V8: 67%Moddable XS: 91% |
| Symbol.prototype.description14 tests/Symbol.prototype.description/ | 83% ChakraCore: 14%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Tail Call Optimization40 tests/tail-call-optimization/ | 41% ChakraCore: 18%JavaScriptCore: 70%SpiderMonkey: 20%V8: 20%Moddable XS: 78% |
| WeakRef56 tests/WeakRef/ | 0% ChakraCore: 0%JavaScriptCore: 0%SpiderMonkey: 0%V8: 0%Moddable XS: 0% |
| Well-formed JSON.stringify2 tests/well-formed-json-stringify/ | 80% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
All Features
ChakraCoreJavaScriptCoreSpiderMonkeyV8Moddable XS
