minify.js

// Import Terser so we can use it
const { minify } = require("terser");

// Import fs so we can read/write files
const fs = require("fs");

// Define the config for how Terser should minify the code
// This is set to how you currently have this web tool configured
const config = {
  compress: {
    dead_code: true,
    drop_console: false,
    drop_debugger: true,
    keep_classnames: true,
    keep_fargs: true,
    keep_fnames: true,
    keep_infinity: true,
  },
  mangle: {
    eval: true,
    keep_classnames: true,
    keep_fnames: true,
    toplevel: true,
    safari10: true,
  },
  module: false,
  sourceMap: false,
  output: {
    comments: "some",
  },
};

// Load in your code to minify
const code = fs.readFileSync("lighthead.js", "utf8");

// Minify the code with Terser
const minified = minify(code, config).then((result) => {
  // Write the minified code to a file
  fs.writeFileSync("lighthead.min.js", result.code);
});