process.env
task for Start.
npm install --save-dev start-env
# or
yarn add --dev start-env
import Start from 'start';
import reporter from 'start-pretty-reporter';
import env from 'start-env';
import files from 'start-files';
import read from 'start-read';
import babel from 'start-babel';
import write from 'start-write';
const start = Start(reporter());
export const build = () => start(
env('NODE_ENV', 'production'),
files('lib/**/*.js'),
read(),
babel(),
write('build/')
);
env(key, value)