React :: Fastlane (auto versioning for mobile)

Fastlane(AutoVersioningForMobile)1.json

command line (assuming gem fastlane is installed):
fastlane add_plugin increment_version_name increment_version_code load_json

in package.json scripts:

  "scripts": {
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "start": "react-native start",
    "test": "jest",
    "lint": "eslint .",
    "bump-patch": "npm version patch && bundle exec fastlane bump",
    "bump-minor": "npm version minor && bundle exec fastlane bump",
    "bump-major": "npm version major && bundle exec fastlane bump",
    "version": "auto-changelog -p"
  },
  "auto-changelog": {
    "output": "CHANGELOG.md",
    "template": "auto-changelog.hbs",
    "unreleased": true,
    "commitLimit": false,
    "sortCommits": "date-desc"
  },


in /fastlane/Fastfile

/// begin
  desc 'Android: Increment versionCode and set versionName to package.json version.'
  package = load_json(json_path: "./package.json")

  private_lane :inc_ver_and do
    increment_version_code(
      gradle_file_path: "./android/app/build.gradle",
    )

    increment_version_name(
      gradle_file_path: "./android/app/build.gradle",
      version_name: package['version']
    )
  end


  desc 'iOS: Increment build number and set the version to package.json version.'
  private_lane :inc_ver_ios do
  package = load_json(json_path: "./package.json")

    increment_build_number(
      xcodeproj: './ios/' + package['name'] + '.xcodeproj'
    )
    increment_version_number(
      xcodeproj: './ios/' + package['name'] + '.xcodeproj',
      version_number: package['version']
    )
  end


  desc 'Bump build numbers, and set the version to match the pacakage.json version.'
  lane :bump do
    inc_ver_ios
    inc_ver_and
  end
/// end


////////////// commands ///////////////
npm run bump-patch
npm run bump-minor
npm run bump-major


//// auto changelog
npm install -g auto-changelog

/// add to package.json scripts
"version": "auto-changelog -p"