In firebase authentication, is there a way to remove a custom claim?

问题

In order to set a custom claim, one uses:

admin.auth().setCustomUserClaims(uid,{claim:value});

There does exist

admin.auth().updateUser(uid,{claim:value});

...but I'm not exactly clear on how the two are different, and neither one seems to get at actually removing a previously applied custom claim.

回答1:

From the documentation:

You can delete a user's custom claims by passing null for customClaims.

So this should delete the claim:

admin.auth().updateUser(uid, {claim: null});

回答2:

I don't think you can use updateUser for this, I think you still need to call

admin.auth().setCustomUserClaims(uid, {claim:null}); 

来源：https://stackoverflow.com/questions/48175477/in-firebase-authentication-is-there-a-way-to-remove-a-custom-claim