| ChakraCoreJavaScriptCoreSpiderMonkeyV8Moddable XS |
|---|
 | Types211 tests types  | 98% ChakraCore: 94%JavaScriptCore: 98%SpiderMonkey: 100%V8: 100%Moddable XS: 98% |
|---|
 | Boolean10 tests/language/types/boolean/ | 92% ChakraCore: 60%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| List6 tests/language/types/list/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Null8 tests/language/types/null/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Number39 tests/language/types/number/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Object36 tests/language/types/object/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Reference49 tests/language/types/reference/ | 93% ChakraCore: 83%JavaScriptCore: 91%SpiderMonkey: 100%V8: 100%Moddable XS: 91% |
| String48 tests/language/types/string/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| Undefined15 tests/language/types/undefined/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
Test262