Function fetchPublishedVersions

packages/bumpy/src/core/prerelease.ts:50–63

(name: string, registry?: string)

/** Fetch all published versions of a package from the registry */
export async function fetchPublishedVersions(name: string, registry?: string): Promise<string[]> {
  const args = ['npm', 'info', name, 'versions', '--json'];
  if (registry) args.push('--registry', registry);
  try {
    const raw = await runArgsAsync(args);
    const parsed = JSON.parse(raw);
    if (Array.isArray(parsed)) return parsed.filter((v) => typeof v === 'string');
    if (typeof parsed === 'string') return [parsed]; // single-version packages
    return [];
  } catch {
    // Package doesn't exist yet (first prerelease ever) or registry unreachable
    return [];
  }
}

/** Fetch the gitHead recorded for a published version (set by npm publish from a git checkout) */
async function fetchGitHead(name: string, version: string, registry?: string): Promise<string | null> {