Is it possible to use firebase v3 in ionic 2

Ionic Framework ionic-v3
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This is for 2.0.0-rc.4 https://www.djamware.com/post/585476a280aca7060f443064/ionic-2-firebase-crud-example-part-1

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Here’s an update for the authentication part using Ionic 2.0.0-rc5:

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Won’t importing the whole firebase be heavy for the app??