Create build configuration in the library xcode project using same name and type as parent one

fix_react_build_configurations.rb

#!/usr/bin/env ruby

require 'pathname'
require 'ostruct'

require 'bundler/setup'
require 'json'
require 'xcodeproj'

PLATFORM = :ios

APP_ROOT = Pathname.new(File.join(File.dirname(__FILE__), '..'))
APP_CONFIG = OpenStruct.new(JSON.parse(File.read(APP_ROOT.join('app.json'))))

raise('Run "npm install" before executing this script') unless Dir.exist?(APP_ROOT.join('node_modules'))

project_path = APP_ROOT.join(PLATFORM.to_s).children.find do |c|
  c.to_s == File.join(File.dirname(c), "#{APP_CONFIG.name}.xcodeproj")
end

# open parent project
root_project = Xcodeproj::Project.open(project_path)

# read project dependencies
groups = root_project.groups.select { |g| g.name = 'Libraries' }
refs = groups.map(&:children).flatten.select { |ref| ref.isa == 'PBXFileReference' && ref.path.end_with?('xcodeproj') }
dependencies = refs.map { |r| Xcodeproj::Project.open(APP_ROOT.join(PLATFORM.to_s).join(r.path)) }

# mirror build configurations from root project to related dependencies
build_configs = root_project.build_configurations.reject { |bc| bc.name == 'Debug' || bc.name == 'Release' }
dependencies.each do |d|
  build_configs.each do |cf|
    if d.build_configurations.find { |bc| bc.name == cf.name && bc.type == cf.type }
      puts "Build configuration #{cf.name} already exists in #{File.basename(d.path)}"
    else
      puts "Adding the following build configuration to #{File.basename(d.path)}: #{cf.name}(#{cf.type})"
      d.add_build_configuration(cf.name, cf.type)
    end
  end
  d.save
end