build.config.js

const assign = require("object-assign");

const dev = process.argv.indexOf("--dev") > -1;
const devServer = process.argv.indexOf("--dev-server") > -1;
const production = process.argv.indexOf("--production") > -1;

const config = assign(
  {
    __DEV__: dev,
    __DEV_SERVER__: devServer,
    __PROD__: production,
    __SERVER_PROTOCOL__: "http://"
  },
  production
    ? {
        "process.env": {
          NODE_ENV: JSON.stringify("production")
        },
        __SERVER_HOSTNAME__: "cssnext.io",
        __SERVER_HOST__: "cssnext.io"
      }
    : {
        __SERVER_HOSTNAME__: "0.0.0.0",
        __SERVER_PORT__: 1985,
        __SERVER_HOST__: "0.0.0.0:1985",
        __LR_SERVER_PORT__: 1986
      }
);

config.__SERVER_URL__ = `${config.__SERVER_PROTOCOL__}${
  config.__SERVER_HOST__
}`;

module.exports = config;