build.js

#!/usr/bin/env node
const fs = require("fs");
const child_process = require("child_process");
const statik = require("node-static");
const esbuild = require("esbuild");
const http = require("http");

const buildConfig = {
  entryPoints: ["src/index.js"],
  bundle: true,
  minify:true,
  loader: { ".css": "text" },
};

function build() {
  var gitId = "undefined";
  try {
    gitId = child_process
      .execSync("git rev-parse --short HEAD")
      .asciiSlice()
      .replace("\n", "");
    gitId = "'" + gitId + "'";
  } catch (e) {}
  esbuild
    .build(
      Object.assign(
        {
          define: { GITID: gitId},
          sourcemap: true,
          outfile: "build/index.js",
        },
        buildConfig
      )
    )
    .catch(() => {})
    .then(() => {
      fs.copyFile("src/index.html", "build/index.html", () => {});
      if (process.argv.includes("electron")) {
        fs.copyFile("src/electron.js", "build/electron.js", () => {});
        fs.copyFile("./package.electron.json", "build/package.json", () => {});
      } else {
        fs.copyFile("src/sw.js", "build/sw.js", () => {});
        fs.copyFile("src/menifest.json", "build/menifest.json", () => {});
        fs.copyFile("docs/icon.png", "build/icon.png", () => {});
      }
      console.log("Build finished!");
    });
}
function liveserver() {
  const file = new statik.Server("./src");
  http
    .createServer(function (request, response) {
      if (request.url == "/index.js") {
        response.writeHead(200, { "Content-Type": "text/javascript" });
        res = esbuild.buildSync(
          Object.assign(
            { write: false, define: { GITID: "'LIVESERVER'" } },
            buildConfig
          )
        );
        response.write(res.outputFiles[0].text);
        response.end();
      }
      file.serve(request, response);
    })
    .listen(8080);
}
if (!process.argv.includes("liveserver")) {
  build();
  if (process.argv.includes("watch")) {
    fs.watch("./src", () => {
      console.log("File changed rebuilding");
      build();
    });
  }
  if (process.argv.includes("serve")) {
    const file = new statik.Server("./build");

    http
      .createServer(function (request, response) {
        request
          .addListener("end", function () {
            //
            // Serve files!
            //
            file.serve(request, response);
          })
          .resume();
      })
      .listen(8080);
  }
} else {
  liveserver();
}