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In this video, let me show you what is called action type constant.

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Even though our logic is perfect, but we are prone to some arrows.

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Let me show you what I mean here.

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Inside the action, that is the context and for the of context.

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And here we go.

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In case I mistakenly provide log in success with additional s or with one s when I save this one.

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And now let's try it.

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Log in.

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Let me open the console.

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Let me clear this one and now let me provide right credentials as Adam at Gmail dot com with a password.

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One, two, three, four, five.

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And now let me hit send.

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Look here.

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Nothing is seen to be displayed.

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But if I provide wrong credentials, let's see what I'm going to get.

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Hey, that's.

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And you can see that I have invalid login credentials, but for the success, I didn't see the success

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with the log in details.

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Why is it so?

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It is so because of the differences of the type inside the reducer.

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There is no action type with this log in success.

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So to avoid this kind of calamities or problems, that is why we need what is called action constant.

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So here we go inside the off.

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Remember, we add that the action type.

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So we are going to export all the action types that you may need for our project.

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So here I'll call this one as log in action types and you may need to file action type.

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You may need the registration, registration or register action type.

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So here we go now going to export const and then log in.

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Success is equal to log in, underscore success and for error.

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I will copy this one and here is going to be as log in failed or failure and I'll provide the same name

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here and start now inside my reducer.

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I'm going to require that file.

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So here I would need the log in action type and success.

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You can see that I have required it here.

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So instead of this one I will go ahead and then replace log in success and this one is more secured.

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So here I need to structure that one also as log in failed.

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So down here let's remove that and make use of log in failed.

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So this are the action constant I was referring to.

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So here I'm going to provide all the action types for you.

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We are going to handle for register for looking.

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We are done with it and for profile and for updates.

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Great.

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So now that we are able to log in, I think we can work on the profile and how we can look out and how

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we can update.

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All right.

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Let's get into that in the next video.