gulpfile.js

const { src, dest, series } = require("gulp");
const minify = require("gulp-minify");
const template = require("gulp-template");

const copyServiceWorker = () =>
  src("./src/sw.js")
    .pipe(minify())
    .pipe(dest("dist/"))
    .pipe(template({ buildVersion: +new Date() }))
    .pipe(dest("./dist"));

exports.default = series(
  // ...
  copyServiceWorker,
);