import chalk from 'chalk' ; export default function CheckNodeEnv ( expectedEnv ) { if ( ! expectedEnv ) { throw new Error ( '"expectedEnv" not set' ) ; } if ( process . env . NODE_ENV !== expectedEnv ) { console . log ( chalk . whiteBright . bgRed . bold ( `"process.env.NODE_ENV" must be "${ expectedEnv }" to use this webpack config` ) ) ; process . exit ( 2 ) ; } }