React Native build number

android_app_build.gradle

android/app/build.gradle
import groovy.json.JsonSlurper

def getNpmVersion() {
    def inputFile = new File("../package.json")
    def packageJson = new JsonSlurper().parseText(inputFile.text)
    return packageJson["version"]
}
/* calculated from git commits to give sequential integers */
def getGitVersion() {
    def process = "git rev-list master --first-parent --count".execute()
    return process.text.toInteger()
}


......


def userVer = getNpmVersion()
def googleVer = getGitVersion()

android {
...
    defaultConfig {
        .....
        versionCode googleVer
        versionName userVer

        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
    }

build.gradle

// android/build.gradl
def getNpmVersionArray() { // major [0], minor [1], patch [2]
    def (major, minor, patch) = getNpmVersion().tokenize('.')
    return [Integer.parseInt(major), Integer.parseInt(minor), Integer.parseInt(patch)] as int[]
}
subprojects {
    ext {
        def npmVersion = getNpmVersionArray()
        versionMajor = npmVersion[0]
        versionMinor = npmVersion[1]
        versionPatch = npmVersion[2]
    }
}

// android/app/build.gradle
android {
    ...

    defaultConfig {
        ...
        versionCode versionMajor * 10000 + versionMinor * 100 + versionPatch
        versionName "${versionMajor}.${versionMinor}.${versionPatch}"
    }
}

package.json

{
  "scripts": {
  "version": "./version-ios.sh"
}
}

version-ios.sh

#!/usr/bin/env bash -e

PROJECT_DIR="ios/ReactNativeApp"
INFOPLIST_FILE="Info.plist"
INFOPLIST_DIR="${PROJECT_DIR}/${INFOPLIST_FILE}"

PACKAGE_VERSION=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]')

BUILD_NUMBER=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "${INFOPLIST_DIR}")
BUILD_NUMBER=$(($BUILD_NUMBER + 1))


# Update plist with new values
/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${PACKAGE_VERSION#*v}" "${INFOPLIST_DIR}"
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $BUILD_NUMBER" "${INFOPLIST_DIR}"

git add "${INFOPLIST_DIR}"