Implement your own Back In Stock

pushowl.registerForEvent('back_in_stock', enableHintScreen)

The above function returns a promise with the following success and returnĀ 

Success:
Return an object in the form of:

{'pushowl_subscriber_token': <PUSHOWL SUBSCRIPTION TOKEN>}

pushowl_subscriber_token: It's a string in the form of a guid which is used to identify the subscriber in pushowl

Error:

Returns an error code:

{'error_code': <ERROR CODE>}


permission_not_granted : If the user denies permission to push notification
unknown_event: If an incorrect value is passed to registerForEvent function

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