| ChakraCoreJavaScriptCoreSpiderMonkeyV8Moddable XS |
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 | Language Syntax39,639 tests language  | 79% ChakraCore: 56%JavaScriptCore: 76%SpiderMonkey: 81%V8: 84%Moddable XS: 97% |
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 | Arguments Object457 tests/language/arguments-object/ | 74% ChakraCore: 54%JavaScriptCore: 72%SpiderMonkey: 73%V8: 73%Moddable XS: 100% |
 | Automatic Semicolon Insertion204 tests/language/asi/ | 99% ChakraCore: 99%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Block Scope287 tests/language/block-scope/ | 88% ChakraCore: 67%JavaScriptCore: 76%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Comments81 tests/language/comments/ | 96% ChakraCore: 83%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Computed Property Names90 tests/language/computed-property-names/ | 94% ChakraCore: 93%JavaScriptCore: 93%SpiderMonkey: 93%V8: 93%Moddable XS: 100% |
 | Destructuring30 tests/language/destructuring/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Directive Prologue62 tests/language/directive-prologue/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Eval Code259 tests/language/eval-code/ | 95% ChakraCore: 88%JavaScriptCore: 91%SpiderMonkey: 100%V8: 97%Moddable XS: 99% |
 | export6 tests/language/export/ | 60% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0% |
 | Expressions18,302 tests/language/expressions/ | 78% ChakraCore: 55%JavaScriptCore: 75%SpiderMonkey: 80%V8: 84%Moddable XS: 97% |
 | Function Code287 tests/language/function-code/ | 99% ChakraCore: 99%JavaScriptCore: 98%SpiderMonkey: 100%V8: 100%Moddable XS: 99% |
 | Future Reserved Words85 tests/language/future-reserved-words/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Global Code73 tests/language/global-code/ | 81% ChakraCore: 75%JavaScriptCore: 91%SpiderMonkey: 80%V8: 80%Moddable XS: 80% |
 | Identifier Resolution19 tests/language/identifier-resolution/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Identifiers289 tests/language/identifiers/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | import8 tests/language/import/ | 60% ChakraCore: 0%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0% |
 | Keywords50 tests/language/keywords/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Line Terminators82 tests/language/line-terminators/ | 96% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 82%V8: 100%Moddable XS: 100% |
 | literals845 tests/language/literals/ | 90% ChakraCore: 84%JavaScriptCore: 87%SpiderMonkey: 99%V8: 79%Moddable XS: 99% |
 | Module Code1,066 tests/language/module-code/ | 58% ChakraCore: 62%JavaScriptCore: 53%SpiderMonkey: 53%V8: 55%Moddable XS: 66% |
 | Punctuators22 tests/language/punctuators/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Reserved Words54 tests/language/reserved-words/ | 98% ChakraCore: 96%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 96% |
 | Rest Parameters22 tests/language/rest-parameters/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Source Text2 tests/language/source-text/ | 80% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 0% |
 | statementList160 tests/language/statementList/ | 98% ChakraCore: 91%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
 | Statements16,502 tests/language/statements/ | 78% ChakraCore: 51%JavaScriptCore: 76%SpiderMonkey: 79%V8: 84%Moddable XS: 99% |
 | Types211 tests/language/types/ | 98% ChakraCore: 94%JavaScriptCore: 98%SpiderMonkey: 100%V8: 100%Moddable XS: 98% |
 | White Space84 tests/language/white-space/ | 100% ChakraCore: 100%JavaScriptCore: 100%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |