*full disclosure I don't have an IE 9 instance to test with, but I think this will break* ### Description IE 9 does not support `console` **unless** dev tools is open. http://stackoverflow.com/questions/5472938/does-ie9-support-console-log-and-is-it-a-real-function#comment15214547_5473193 A polyfill can prevent JS from breaking: https://github.com/paulmillr/console-polyfill ### Environment 1. Operating system: Windows 2. Browser and version: IE 9 ### Reproducible Demo I don't have an environment to test this with.
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gaearon commentedon May 20, 2017
Thanks for reporting!