Create .zip file from directory with Deno in TypeScript (JavaScript)

zipdir.ts

import { exists } from "jsr:@std/fs";
import * as zip from "jsr:@zip-js/zip-js";
import { glob } from "npm:glob";
import * as path from "jsr:@std/path";

/**
 * Zip the contents of a directory into a .zip file
 */
export async function zipDir(directoryPath: string, zipFilePath: string) {
  if (await exists(zipFilePath)) {
    throw new Error(`The zip file (${zipFilePath}) already exists.`);
  }

  if (!(await exists(directoryPath, { isDirectory: true }))) {
    throw new Error(
      `The specified directory (${directoryPath}) does not exist.`,
    );
  }

  console.log(`Creating ${zipFilePath}`);

  zip.configure({ chunkSize: 128, useWebWorkers: true });

  const wf = Deno.createSync(zipFilePath);
  const w = new zip.ZipWriter(wf, {
    level: 9,
    useUnicodeFileNames: true,
  });

  const files = await glob(`${directoryPath}/**/*`, {
    cwd: directoryPath,
    maxDepth: 10,
    nodir: true,
  });
  for (let f of files) {
    f = f.replace(/\\/g, "/");
    console.log(`Adding ${f}`);
    await w.add(
      f,
      (await Deno.open(path.resolve(directoryPath, f), {
        read: true,
        write: false,
      }))
        .readable,
    );
  }

  await w.close();
  console.log(`Finished ${zipFilePath}`);
}