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The "Sign Out Exercise" Lesson is part of the full, Firebase with React, v2 course featured in this preview video. Here's what you'd learn in this lesson:

Students are instructed to allow users to sign out of the application.

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Transcript from the "Sign Out Exercise" Lesson

>> Steve Kinney: We go into the console here.
>> Steve Kinney: We can see we've got that global fire base, I'll say auth = firebase
>> Steve Kinney: .auth. And you can see that there's also a sign out method and call that method and I have that auth state change handler, right? So I just call it and I'm signed out, right?

[00:00:32] Your job is to when they're signed in, in that current user component.
>> Steve Kinney: There's the sign out button. We wanna wire it up so that when they click the sign out button, they are in fact signed out.