Function parseCatalogs

packages/bumpy/src/utils/package-manager.ts:108–164

(workspaceYaml: string | null, rootPackageJson: string | null)

 * .yarnrc.yml for Yarn — both use the same `catalog` / `catalogs` shape.
 */
export function parseCatalogs(workspaceYaml: string | null, rootPackageJson: string | null): CatalogMap {
  const catalogs: CatalogMap = new Map();

  const addNamed = (raw: Record<string, Record<string, string>>): void => {
    for (const [name, deps] of Object.entries(raw)) {
      catalogs.set(normalizeCatalogName(name), deps);
    }
  };

  if (workspaceYaml) {
    try {
      const parsed = yaml.load(workspaceYaml) as {
        catalog?: Record<string, string>;
        catalogs?: Record<string, Record<string, string>>;
      } | null;

      if (parsed?.catalog) {
        catalogs.set('', parsed.catalog); // default catalog
      }
      if (parsed?.catalogs) {
        addNamed(parsed.catalogs);
      }
    } catch {
      // ignore malformed yaml
    }
  }

  if (rootPackageJson) {
    try {
      const pkg = JSON.parse(rootPackageJson) as Record<string, unknown>;

      // Top-level catalog/catalogs (used by bun, yarn, and proposed npm)
      if (pkg.catalog && typeof pkg.catalog === 'object') {
        catalogs.set('', pkg.catalog as Record<string, string>);
      }
      if (pkg.catalogs && typeof pkg.catalogs === 'object') {
        addNamed(pkg.catalogs as Record<string, Record<string, string>>);
      }

      // Inside workspaces object (bun style)
      const workspaces = pkg.workspaces;
      if (workspaces && typeof workspaces === 'object' && !Array.isArray(workspaces)) {
        const ws = workspaces as Record<string, unknown>;
        if (ws.catalog && typeof ws.catalog === 'object') {
          catalogs.set('', ws.catalog as Record<string, string>);
        }
        if (ws.catalogs && typeof ws.catalogs === 'object') {
          addNamed(ws.catalogs as Record<string, Record<string, string>>);
        }
      }
    } catch {
      // ignore malformed json
    }
  }

  return catalogs;
}