const environmentTemplate = env => `https://${env}.mydomain.com` const ENVIRONMENTS = { local: 'http://localhost:3000', dev: environmentTemplate('dev'), qa: environmentTemplate('qa'), } const commonOptions = { target: ENVIRONMENTS.dev, changeOrigin: true, ws: true, onError: function(err) { console.log(err.message) }, } module.exports = { '/proxy': commonOptions }