const PRODUCTION = 'production' ; const DEVELOPMENT = 'development' ; const STAGING = 'staging' ; const LOCAL = 'local' ; const IS_DEV = process . env . NODE_ENV === DEVELOPMENT ; const IS_PROD = process . env . NODE_ENV === PRODUCTION ; const IS_STAGING = process . env . TARGET_ENV === STAGING ; module . exports = { PRODUCTION , DEVELOPMENT , STAGING , LOCAL , IS_DEV , IS_PROD , IS_STAGING } ;