Function stepCheckWorkspaces

packages/release-cli/src/steps/check_workspaces.ts:27–60

(
  options: ReleaseOptions,
  workspacesToPublish: Array<YarnWorkspace>
)

 * to make it safer.
 */
export const stepCheckWorkspaces = async (
  options: ReleaseOptions,
  workspacesToPublish: Array<YarnWorkspace>
) => {
  const { logger } = options;
  const rootWorkspaceDir = getRootWorkspaceDir();
  const publishableWorkspaces: Array<YarnWorkspace> = [];

  logger.info('Checking latest versions of published packages on npmjs');

  for (const workspace of workspacesToPublish) {
    const workspaceDir = path.join(rootWorkspaceDir, workspace.location);
    const packageJson = await getWorkspacePackageJson(workspaceDir);

    if (packageJson.private) {
      logger.debug(
        `[${workspace.name}] Package is private and will not be published`
      );
      continue;
    }

    const publishedVersions = await getNpmPublishedVersions(workspace.name);
    if (publishedVersions.includes(packageJson.version)) {
      logger.warning(
        `[${workspace.name}] Version ${packageJson.version} is already available on npmjs and cannot be republished. The package will be skipped from publishing`
      );
      continue;
    }

    publishableWorkspaces.push(workspace);
  }

  return publishableWorkspaces;
};