APK file is larger with react-native 0.59

🐛 Bug Report

After building my arm APK, I noted that APK file increased by about 3 MB. With Android Studio, I analyzed that APK I found two unstripped .so files, libjsc.so and libc++_shared.so, they respectively size 12.7MB and 5.7MB.

To Reproduce

npm install then unzip -l node_modules/react-native/android/com/facebook/react/react-native/0.59.2/react-native-0.59.2.aar

Expected Behavior

These two files must be stripped to reduce their size and, so, to reduce APK file size.

Code Example

Environment

React Native Environment Info:
    System:
      OS: Linux 4.18 Ubuntu 18.10 (Cosmic Cuttlefish)
      CPU: (8) x64 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
      Memory: 160.84 MB / 15.39 GB
      Shell: 4.4.19 - /bin/bash
    Binaries:
      Node: 8.11.4 - /usr/bin/node
      Yarn: 1.12.3 - /usr/bin/yarn
      npm: 6.9.0 - ~/.npm-global/bin/npm
    SDKs:
      Android SDK:
        API Levels: 23, 25, 26, 27, 28
        Build Tools: 23.0.3, 27.0.3, 28.0.3
        System Images: android-23 | Google APIs Intel x86 Atom, android-23 | Google APIs Intel x86 Atom_64, android-28 | Google APIs Intel x86 Atom
    npmPackages:
      react: ^16.4.1 => 16.8.5 
      react-native: ^0.59.2 => 0.59.2 
    npmGlobalPackages:
      create-react-native-app: 2.0.2
      react-native-cli: 2.0.1
      react-native-git-upgrade: 0.2.7
      react-native-rename: 2.2.2

[mannodermaus]

We are seeing a similar size increase (around 4 MB for us) after upgrading from React Native 0.57.8 to 0.59.5. Comparing, for instance, lib/x86/libjsc.so in both versions yields the same observations that @Thebarda made; the newer version seems to not be stripped.

0.57.8 (File size: 4614240 bytes):

0.59.5 (File size: 12704300 bytes):

[Thebarda]

@sridhar-vadlamani-ck Do you splits your application into multiple APK ? Splitting you app into an APK for each architecture could reduce that increase. The big advantage of the new 0.59 is that you can generate an APK for 64-bit architectures