Today I worked on an ExpoKit project, it has all of the expo-firebase modules so to make the binary size reasonable I needed to start pulling stuff out. I figured I'd share my findings and an example project.
If you eject your project (expo eject) you can open the ios/Podfile and pull out all of the following modules:
pod 'EXAdsAdMob',
:path => "../packages/expo-ads-admob/ios"
pod 'EXAppAuth',
:path => "../packages/expo-app-auth/ios"
pod 'EXBarCodeScanner',
:path => "../packages/expo-barcode-scanner/ios"
pod 'EXCamera',
:path => "../packages/expo-camera/ios"
pod 'EXContacts',
:path => "../packages/expo-contacts/ios"
pod 'EXFaceDetector',
:path => "../packages/expo-face-detector/ios"
pod 'EXGoogleSignIn',
:path => "../packages/expo-google-sign-in/ios"
pod 'EXFaceDetector',
:path => "../packages/expo-face-detector/ios"
pod 'EXGL',
:path => "../packages/expo-gl/ios"
pod 'EXGL-CPP',
:path => "../packages/expo-gl-cpp/cpp"
pod 'EXLocalAuthentication',
:path => "../packages/expo-local-authentication/ios"
pod 'EXLocalization',
:path => "../packages/expo-localization/ios"
pod 'EXMediaLibrary',
:path => "../packages/expo-media-library/ios"
pod 'EXPaymentsStripe',
:path => "../node_modules/expo-payments-stripe/ios"
pod 'EXPrint',
:path => "../packages/expo-print/ios"
pod 'EXSegment',
:path => "../packages/expo-analytics-segment/ios"
pod 'EXSensors',
:path => "../packages/expo-sensors/ios"
pod 'EXSMS',
:path => "../packages/expo-sms/ios"You may have noticed a bunch of Pods with the interface suffix. These cannot be removed as they are used for interfacing between unimodules. They usually contain 1 or 2 .h files which compile down to ~100 bytes. So you shouldn't worry about binary bloat coming from these. Ideally we could make these removable too, for brevity purposes ¯_(ツ)_/¯
Using this script I measured all of the Pods in an ExpoKit (v30) project. Here is a breakdown of the results: Neat-Spread-Sheet.
Ideally these modules would be bundled into their own Expo Unimodules, that way you can remove them! 😄 For instance expo-face-detector is removable which saves you 43mb. (in the case of FaceDetector you need to detach to use it anyways expo build doesn't bundle it by default)
As you can see from the chart below; Google Maps (~15mb) & Facebook (~5.5mb) would be good libraries to roll into removable unimodules.
In v31 we've moved AppAuth (0.14mb), and GoogleSignIn (0.61mb) into expo-app-auth and expo-google-sign-in which you can now pull out (reducing size wasn't the target of those two 😅).
GPUImage (~0.9mb) is still in the client for legacy purposes, it will be removed soon enough!
