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Is it possible to load an older version of Firebase JavaScript SDK

I want to confirm that it is not possible to load an older version of Firebase JavaScript SDK.

I took a look at the release notes and the documentation and it seems there is no way to load the older version of the API.

Can someone confrim?

Yes it is possible, as you can see in this page:

https://firebase.google.com/docs/web/setup

They are loading the following:

<script src="https://www.gstatic.com/firebasejs/4.10.1/firebase.js"></script>

while the latest version is 4.12.0 released in march 20.

So you are able to use older versions, but of course not all older versions are supported anymore.

It is also better to always use the newest version, to be able to use the latest additions to the sdk.

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