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JavaScript Engines

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ChakraCoreJavaScriptCoreSpiderMonkeyV8
Current file:invoked-as-constructor-no-arguments.js(source)
Default Scenario
75% interoperable across selected implementations
FAILChakraCoreOKJavaScriptCoreOKSpiderMonkeyOKV8
Strict Scenario
75% interoperable across selected implementations
FAILChakraCoreOKJavaScriptCoreOKSpiderMonkeyOKV8

Default Mode

Strict Mode

Unless configured otherwise (via the noStrict, onlyStrict, module, orraw flags), each test must be executed twice: once in ECMAScript's non-strict mode, and again in ECMAScript's strict mode. To run in strict mode, the test contents must be modified prior to execution--a "use strict" directivemust be inserted as the initial character sequence of the file, followed by a semicolon (;) and newline character (\n):