Function getCommitShaForRef

Support/SingleFileLibs/javascript/app.js:185–192

(ref)

  const commitShaCache = new Map(); // ref -> sha
  async function getCommitShaForRef(ref) {
    if (commitShaCache.has(ref)) return commitShaCache.get(ref);
    // Works for branch or tag or SHA itself
    // GET /commits/{ref}
    const data = await fetchJSON(`https://api.github.com/repos/${OWNER}/${REPO}/commits/${encodeURIComponent(ref)}`);
    commitShaCache.set(ref, data.sha);
    return data.sha;
  }

  async function getRepoTree(ref) {
    // Use trees API for a single call listing all files