Function recoverDeletedBumpFiles

packages/bumpy/src/core/bump-file.ts:270–298

(rootDir: string)

 * once HEAD diverges, leaving releases with no changelog body.
 */
export function recoverDeletedBumpFiles(rootDir: string): BumpFile[] {
  // The most recent commit that deleted any .bumpy/*.md file — i.e. the version
  // commit that consumed them.
  const versionCommit = tryRunArgs(['git', 'log', '--diff-filter=D', '--format=%H', '-n', '1', '--', '.bumpy/*.md'], {
    cwd: rootDir,
  })
    ?.split('\n')
    .filter(Boolean)[0]
    ?.trim();
  if (!versionCommit) return [];

  // Read the deleted files' content from the commit's parent.
  const parent = `${versionCommit}~1`;
  const deleted = tryRunArgs(
    ['git', 'diff', '--diff-filter=D', '--name-only', parent, versionCommit, '--', '.bumpy/*.md'],
    { cwd: rootDir },
  );
  if (!deleted) return [];

  const bumpFiles: BumpFile[] = [];
  for (const filePath of deleted.split('\n').filter(Boolean)) {
    if (filePath.endsWith('README.md')) continue;
    const content = tryRunArgs(['git', 'show', `${parent}:${filePath}`], { cwd: rootDir });
    if (!content) continue;
    const { bumpFile } = parseBumpFile(content, fileToId(filePath));
    if (bumpFile) bumpFiles.push(bumpFile);
  }
  return bumpFiles;
}

/**
 * Move bump files into a channel's shipped directory (`.bumpy/<channel>/`).