FR: Module is huge, consider splitting it into many submodules (inside same repo) and lazy loading, bundle size

[OZZlE]

[REQUIRED] Describe your environment

• Operating System version: Not applicable.
• Browser version: Not applicable.
• Firebase SDK version: 8.4.3
• Firebase Product: auth

[REQUIRED] Describe the problem

Steps to reproduce:

yarn add firebase || npm install firebase
import 'firebase/auth' # 61.1 KB gzipped, 199.6 KB not gzipped!
import firebase from 'firebase/app' # 7.6 KB gzipped, 23.5 KB not gzipped

firebase.initializeApp(config)
this.auth = firebase.auth()

This is by far the biggest third party module we use and it's not easily replaceable by own code.

If it's because the module is very framework generic, perhaps making specific versions is better, like react-firebase, angular-firebase, vue-firebase etc.

[OZZlE]

https://bundlephobia.com/[email protected]

[Feiyang1]

Have you tried the v9 beta SDK, which is modular and tree shakable? See #4791 for our announcement

[Feiyang1]

duplicate of #332.
I will close the issue, but feel free to open a discussion thread for specific things you'd like to bring up.

[OZZlE]

Thanks, it decreased 56.6KB(!) but it's still 166.5 KB for handling login (in our case).. so better but not awesome

[laurentpayot]

@OZZlE what sorts of authentication are you using? My OAuth-only chunk is ±80 KB uncompressed (generated by Rollup with terser plugin) and ±22 KB brotli compressed.

[OZZlE]

import 'firebase/compat/auth' # 140.4KB (gzipped 40.4K)
import firebase from 'firebase/compat/app' # 26.1 KB (gzipped 8.9K)

We use OAuth, magic email link and login with username/pw. We use webpack.

Maybe not huge gzipped but still the biggest node module we have as far as I can see.

we use now use:

"firebase": "9.0.0-beta.1",

[laurentpayot]

From your import lines I can see you're using the compatibility library. From the docs:

Compat libraries have little to no size or performance advantages over their version 8 counterparts.

I think the small size reduction you're experiencing only comes from the complete Firebase rewrite. To get the benefits of tree shaking you have to use the "real" modular V9 version.