src/utils/nodeEnv.ts

// Set the environment to production or development
// lots of tools use this to determine if they should run in a dev mode.
export function setNodeEnv(mode: 'development' | 'production') {
  process.env.NODE_ENV = process.env.NODE_ENV || mode;
  process.env.BABEL_ENV = process.env.BABEL_ENV || process.env.NODE_ENV;
}