@vovkasm/jsc-android

Differences with jsc-android-buildscripts

Current version is 0.0.1, it is unstable and work-in-progress

- ICU and Webkit sources forked and embedded in repo
- ICU 71.1 official distr
- WebKit 7615.1.7.1 (tag: WebKit-7615.1.7.1, or canonical: 254623.2@safari-7615.1.7-branch)
- All sources built with -Oz and LTO
- DFG JIT enabled
- It use static libc++ and expose only C API, it makes used NDK maximally independed from other components. So please use
latest NDK, if possible (tested with NDK 25.1.8937393).

Install

android/build.gradle
``
maven {
// Android JSC is installed from npm
// Replace this:
// url("$rootDir/../node_modules/jsc-android/dist")
// to:
url("$rootDir/../node_modules/@vovkasm/jsc-android/dist")
}

...

mavenCentral {
// We don't want to fetch react-native from Maven Central as there are
// older versions over there.
content {
excludeGroup "com.facebook.react"
excludeGroup "org.webkit" // <--- add this line
}
}
`

android/app/build.gradle
`
if (enableHermes) {
//noinspection GradleDynamicVersion
implementation("com.facebook.react:hermes-engine:+") { // From node_modules
exclude group:'com.facebook.fbjni'
}
} else {
//noinspection GradleDynamicVersion
implementation 'org.webkit:android-jsc:+' // <--- use this!
}
`

android/app/src/main/java/.../MainApplication.java
`
import org.webkit.androidjsc.JscManager; // <--- add this line

public void onCreate() {
super.onCreate();
JscManager.init(this.getAssets()); // <--- add this line
// If you opted-in for the New Architecture, we enable the TurboModule system
ReactFeatureFlags.useTurboModules = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED;
SoLoader.init(this, / native exopackage / false);
}
`

Building from source

Define ANDROID_NDK_HOME env var.

`
npm run clean
npm run native
npm run dist
`

Update Webkit

1. Clone webkit repo
2. Switch to required branch
3. From jsc-android root directory: ./import-webkit.sh `
4. (may be hard) Reapply all patches
- git format-patch, then git am, or maybe rebase/cherry-pick