Function createRunnerFunction

packages/plugin-lighthouse/src/lib/runner/runner.ts:31–65

(
  urls: string[],
  flags: LighthouseCliFlags = DEFAULT_CLI_FLAGS,
)

} from './utils.js';

export function createRunnerFunction(
  urls: string[],
  flags: LighthouseCliFlags = DEFAULT_CLI_FLAGS,
): RunnerFunction {
  return withLocalTmpDir(async (): Promise<AuditOutputs> => {
    const config = await getConfig(flags);
    const normalizationFlags = enrichFlags(flags);
    const urlsCount = urls.length;
    const isSingleUrl = !shouldExpandForUrls(urlsCount);

    const allResults = await asyncSequential(urls, (url, urlIndex) => {
      const enrichedFlags = isSingleUrl
        ? normalizationFlags
        : enrichFlags(flags, urlIndex + 1);
      const step = { urlIndex, urlsCount };
      return runLighthouseForUrl(url, enrichedFlags, config, step);
    });

    const collectedResults = allResults.filter(res => res != null);
    if (collectedResults.length === 0) {
      throw new Error(
        isSingleUrl
          ? 'Lighthouse did not produce a result.'
          : 'Lighthouse failed to produce results for all URLs.',
      );
    }

    logResultsForAllUrls(collectedResults);

    const auditOutputs: AuditOutputs = collectedResults.flatMap(
      res => res.auditOutputs,
    );
    return filterAuditOutputs(auditOutputs, normalizationFlags);
  });
}

type ResultForUrl = {
  url: string;