You can obtain necessary binaries from here: https://github.com/Taritsyn/JavaScriptEngineSwitcher
more specifically, here: https://github.com/Taritsyn/JavaScriptEngineSwitcher/tree/master/Binaries/ClearScript
more specifically, here: https://github.com/Taritsyn/JavaScriptEngineSwitcher/tree/master/Binaries/ClearScript