Issue on Firefox Browsers

[bmd-bentar]

One of my users got an issue like this on his console log (Firefox Browser):
TypeError: window.safari is undefined OneSignalSDK.js(line5, col 2143)
TypeError: window.safari is undefined OneSignalSDK.js(line2, col 18947)

Any idea?
Thanks.

[jasonpang]

On Safari browsers only, window.safari is defined, and returns:

Our SDK calls window.safari.pushNotification.requestPermission to prompt the user to subscribe on Safari.

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For Safari browsers:

It's easy for third-party scripts running on the user's site to override the window.safari variable. Often times, scripts do this to set a marker that the environment the script is running on is Safari. This isn't good because it overwrites the global window.safari variable with no way to bring it back.

The error here is with the 3rd party script, and I'm afraid once that variable has been overwritten, there's nothing that can be done to restore it.

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For non-Safari browsers:

If your user was running on a Firefox browser, the user agent navigator.userAgent was set to a Safari-like string, and our SDK (which internally uses https://github.com/ded/bowser) tried to register the user as if he or she was on Safari.

This should not normally happen. The user may have had another Firefox extension that changes the user agent for testing (very unlikely), or was testing the site in Firefox's Dev Tools and mimicking a Safari device (possible), or something else happened that changed the user agent on the page.

[jasonpang]

Feel free to reply if you have any other questions or concerns, but the above reply should be what you're looking for!