Bitbucket full backup script (deno)

backup-bitbucket.js

/**
 * Bitbucket bulk backup script using Deno.
 * 
 * Backs up all the repos in a workspace to a mirror
 * note: Use an app password scoped to read repo only
 * workspace is the url slug for your username/company/group etc
 * 
 * Should also update existing bare repos that are found.
 * 
 * Released under MIT License, use at own risk
 */

// const USER = "";
// const PASS = ""; // Use an app password with repo read access only
// const WORKSPACE = "";

const exists = (filename) => {
    try {
      Deno.statSync(filename);
      // successful, file or directory must exist
      return true;
    } catch (error) {
      if (error instanceof Deno.errors.NotFound) {
        // file or directory does not exist
        return false;
      } else {
        // unexpected error, maybe permissions, pass it along
        throw error;
      }
    }
  };

let repos = [];
let url = `https://api.bitbucket.org/2.0/repositories/${WORKSPACE}`;

if(!exists("./repos"))
{
  Deno.mkdirSync("./repos");
}
Deno.chdir("./repos");
const baseDir = Deno.cwd();

do {
  console.log(url);
  const data = await (
    await fetch(url, {
      headers: { authorization: `basic ${btoa([USER, PASS].join(":"))}` },
    })
  ).json();

  for (let entry of data.values.map((r) => ({
    name: r.full_name.split("/")[1],
    url: r.links.clone.find((m) => m.name == "ssh").href,
  }))) {
    if (!exists(baseDir + "/" + entry.name + ".git")) {
      console.log(`Mirroring ${entry.name}...`);

      Deno.chdir(baseDir);
      const p = Deno.run({ cmd: ["git", "clone", "--mirror", entry.url] });
      await p.status();
    } else {
      console.log(`Syncing ${entry.name}...`);

      Deno.chdir(baseDir + "/" + entry.name + ".git");
      const p = Deno.run({ cmd: ["git", "remote", "update"] });
      await p.status();
    }
  }

  url = data.next;
} while (url != null);