createCodemod

const results = await createCodemod((builder) =>
  builder
    .createTree(
      (tree) =>
        tree
          .text("hello_world.txt", "Hello, Ethan!\n")
    )
    .createCommit(({ 0: tree }) => ({
      message: "Add Ethan as a new friend",
      tree: tree.sha,
    }), (commit) =>
      commit
        .parentRef("new-branch"))
    .createOrUpdateBranch(({ 1: commit }) => ({
      ref: "new-branch",
      sha: commit.sha,
    }))
    .maybeCreatePR({
      title: "Add Ethan as a new friend",
      body: "This is a test PR.",
      head: "new-branch",
      base: "", // Defaults to repository's default branch.
    }), {
  owner: "EthanThatOneKid",
  repo: "pomo",
  token: GITHUB_TOKEN,
});

console.log(results);