Function findPackagesMissingFromNpm

packages/bumpy/src/commands/publish.ts:847–863

* Filter `toPublish` to package names that don't exist on npm yet. * Skips packages not going through the standard npm publish flow.

(
  toPublish: PlannedRelease[],
  packages: Map<string, WorkspacePackage>,
)

 * Skips packages not going through the standard npm publish flow.
 */
async function findPackagesMissingFromNpm(
  toPublish: PlannedRelease[],
  packages: Map<string, WorkspacePackage>,
): Promise<string[]> {
  const missing: string[] = [];
  await Promise.all(
    toPublish.map(async (release) => {
      const pkg = packages.get(release.name)!;
      const pkgConfig = pkg.bumpy || {};
      if (pkgConfig.publishCommand || pkgConfig.skipNpmPublish) return;
      if (pkg.private && !pkgConfig.publishCommand) return;
      const exists = await packageExistsOnNpm(release.name, pkgConfig.registry);
      if (!exists) missing.push(release.name);
    }),
  );
  return missing;
}