scripts/strip-pr-footer.mjs

Functions

Imports

It imports no other module of this repo. No module of this repo imports it.

Source

1// Strips the "Generated by Claude Code" footer from pull request descriptions, the no-AI-trailer rule ai-author.yml holds
2// commits to, for descriptions. A cloud session's GitHub connection appends the footer to every description it writes and
3// puts it back when the session removes it, so the repository removes it instead. pr-footer.yml
4// carries this file inline (scripts/inline-rollback-guard.mjs) and runs it on each opened or edited pull request, and by
5// hand (workflow_dispatch) over every pull request. An edit made with the workflow's GITHUB_TOKEN starts no new run, so
6// there is no loop.
7//
8// NO node_modules IMPORTS: the job runs without npm ci.
9
10// The footer as the connection writes it: a rule, then one italic line linking Claude
11// Code, at the end of the description. Also the "Generated with Claude Code" wording.
12const FOOTER = /\s*(?:^|\n)-{3,}\s*\n+\s*_?(?:🤖\s*)?Generated (?:by|with) \[Claude Code\]\([^)]*\)_?\s*$/u;
13// The bare line, with no rule above it, and a session link left on its own.
14const BARE = /\s*\n(?:🤖\s*)?_?Generated (?:by|with) \[Claude Code\]\([^)]*\)_?\s*$/u;
15const SESSION_LINK = /\s*\nhttps:\/\/claude\.ai\/code\/session_[A-Za-z0-9]+\s*$/u;
16
17/** The description without the footer, or null when it carries none. @param {unknown} body @returns {string | null} */
18export function stripFooter(body) {
19  if (typeof body !== "string") return null;
20  let out = body;
21  for (let i = 0; i < 4; i++) {
22    const next = out.replace(FOOTER, "").replace(BARE, "").replace(SESSION_LINK, "");
23    if (next === out) break;
24    out = next;
25  }
26  return out === body ? null : `${out.trimEnd()}\n`;
27}
28
29async function gh(path, init = {}) {
30  const res = await fetch(`https://api.github.com${path}`, {
31    ...init,
32    headers: { Authorization: `Bearer ${process.env.GITHUB_TOKEN}`, Accept: "application/vnd.github+json", "Content-Type": "application/json" },
33  });
34  if (!res.ok) throw new Error(`${init.method ?? "GET"} ${path}: ${res.status} ${(await res.text()).slice(0, 200)}`);
35  return res.json();
36}
37
38async function fix(repo, number, body) {
39  const stripped = stripFooter(body);
40  if (stripped === null) return false;
41  await gh(`/repos/${repo}/pulls/${number}`, { method: "PATCH", body: JSON.stringify({ body: stripped }) });
42  return true;
43}
44
45async function main() {
46  const repo = process.env.GITHUB_REPOSITORY;
47  if (!repo || !process.env.GITHUB_TOKEN) throw new Error("GITHUB_REPOSITORY and GITHUB_TOKEN are required");
48  const one = process.env.PR_NUMBER;
49  if (one) {
50    const pr = await gh(`/repos/${repo}/pulls/${one}`);
51    console.log(`#${one}: ${(await fix(repo, one, pr.body)) ? "footer removed" : "no footer"}`);
52    return;
53  }
54  let read = 0;
55  let fixed = 0;
56  for (let page = 1; page <= 50; page++) {
57    const prs = await gh(`/repos/${repo}/pulls?state=all&per_page=100&page=${page}`);
58    for (const pr of prs) {
59      read++;
60      if (await fix(repo, pr.number, pr.body)) fixed++;
61    }
62    if (prs.length < 100) break;
63  }
64  console.log(`${read} pull request(s) read, ${fixed} footer(s) removed`);
65}
66
67if (import.meta.url === `file://${process.argv[1]}`) {
68  main().catch((err) => {
69    console.error(err instanceof Error ? err.message : String(err));
70    process.exit(1);
71  });
72}