git-repo-migration.js

const { Octokit } = require("@octokit/rest");
const config = require("./config.json");

// config = {
//   "repositories": [
//     {
//       "slug": "owner/repository",
//       "maintainers": [
//         "TeamA",
//         "TeamB"
//       ]
//     }
//   ]
// };

async function main() {
  const octokit = new Octokit({
    auth: process.env.PERSONAL_GH_TOKEN,
  });

  // for each repository 
  for (r of config.repositories) {
    const [owner, repo] = r.slug.split("/");
    let failed = false;
    try {
      // delete all collaborators
      const teamOwner = await octokit.rest.repos.listTeams({
        owner,
        repo,
      });

      // first teams
      for (t of teamOwner.data) {
        await octokit.rest.teams.removeRepoInOrg({
          org: owner,
          team_slug: t.name.replaceAll(" ", "-"),
          owner,
          repo,
        })
      }

      // then users
      const collabs = await octokit.rest.repos.listCollaborators({
        owner,
        repo,
        affiliation: "direct"
      });

      for (c of collabs.data) {
        await octokit.rest.repos.removeCollaborator({
          owner,
          repo,
          username: c.login,
        });
      }

      // now add developers with write permissions
      await octokit.rest.teams.addOrUpdateRepoPermissionsInOrg({
        org: owner,
        team_slug: "developer",
        owner,
        repo,
        permission: "push"
      });

      // and now all maintainers
      for (m of r.maintainers) {
        await octokit.rest.teams.addOrUpdateRepoPermissionsInOrg({
          org: owner,
          team_slug: m.replaceAll(" ", "-"),
          owner,
          repo,
          permission: "maintain"
        });
      }
    } catch (error) {
      console.error(error);
    } finally {
      console.log(`job status for ${owner}/${repo}: ${failed ? "failed" : "success"}`);
    }
  }
}

main();