auth-web/build/build.js

"use strict";
require("./check-versions")();

const ora = require("ora");
const rm = require("rimraf");
const path = require("path");
const chalk = require("chalk");
const webpack = require("webpack");
const config = require("../config");
const webpackConfig = require("./webpack.prod.conf");
var connect = require("connect");
var serveStatic = require("serve-static");

const spinner = ora("building for " + process.env.env_config + " environment...");
spinner.start();
rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
    if (err) throw err;
    webpack(webpackConfig, (err, stats) => {
        spinner.stop();
        if (err) throw err;
        process.stdout.write(
            stats.toString({
                colors: true,
                modules: false,
                children: false,
                chunks: false,
                chunkModules: false
            }) + "\n\n"
        );

        if (stats.hasErrors()) {
            console.log(chalk.red(" Build failed with errors.\n"));
            process.exit(1);
        }

        console.log(chalk.cyan(" Build complete.\n"));
        console.log(
            chalk.yellow(
                " Tip: built files are meant to be served over an HTTP server.\n" +
                    " Opening index.html over file:// won't work.\n"
            )
        );

        if (process.env.npm_config_preview) {
            const port = 9526;
            const host = "http://localhost:" + port;
            const basePath = config.build.assetsPublicPath;
            const app = connect();

            app.use(
                basePath,
                serveStatic("./dist", {
                    index: ["index.html", "/"]
                })
            );

            app.listen(port, function() {
                console.log(chalk.green(`> Listening at  http://localhost:${port}${basePath}`));
            });
        }
    });
});