some bash/sed helpers for getting version strings

get-version.sh

# local: package version
package_version=$(cat package.json | grep version -m 1 | sed 's/"version": "//' | sed 's/",//' | xargs)

# git: package version
git_package_version=$(git show HEAD^^^:package.json | grep version -m 1 | sed 's/"version": "//' | sed 's/",//' | xargs)

# react-native: current android version
android_version=$(cat android/app/build.gradle | grep versionName | sed 's/versionName "//' | sed 's/"//' | xargs)
android_build=$(awk '/versionCode/ && !/versionCodes/ && /[0-9]+/ {gsub(/[^0-9]/, "", $2); print $2}' android/app/build.gradle)

# react-native: current iOS version
ios_version=$(cat ios/MyAppName/Info.plist | grep CFBundleShortVersionString -A1 | sed -n -e 's/\<string\>//p' | sed -e "s/\<\/string\>//" | xargs)