# Ensure that the environment variables defined in the reference env vars file # are present in the execution environment. # # This protects against an out-to-date environment leading to runtime errors. if ENV['RAILS_ENV'] != 'test' && File.basename($0) != 'rake' reference_env_file = File.join('config', 'env.example') Dotenv::Environment.new(Rails.root.join(reference_env_file)).each do |key, value| if !ENV.key?(key.to_s) raise "Configuration error: `#{key}` is not present in the process’ environment variables (declared in `#{reference_env_file}`)" end end end