Method _crawl

packages/jest-haste-map/src/index.ts:763–805

(hasteMap: InternalHasteMap)

  }

  private async _crawl(hasteMap: InternalHasteMap) {
    const options = this._options;
    const ignore = this._ignore.bind(this);
    const crawl = (await this._shouldUseWatchman()) ? watchmanCrawl : nodeCrawl;
    const crawlerOptions: CrawlerOptions = {
      computeSha1: options.computeSha1,
      data: hasteMap,
      enableSymlinks: options.enableSymlinks,
      extensions: options.extensions,
      forceNodeFilesystemAPI: options.forceNodeFilesystemAPI,
      ignore,
      rootDir: options.rootDir,
      roots: options.roots,
    };

    const retry = (retryError: Error) => {
      if (crawl === watchmanCrawl) {
        this._console.warn(
          'jest-haste-map: Watchman crawl failed. Retrying once with node ' +
            'crawler.\n' +
            "  Usually this happens when watchman isn't running. Create an " +
            "empty `.watchmanconfig` file in your project's root folder or " +
            'initialize a git or hg repository in your project.\n' +
            `  ${retryError}`,
        );
        return nodeCrawl(crawlerOptions).catch(error => {
          throw new Error(
            'Crawler retry failed:\n' +
              `  Original error: ${retryError.message}\n` +
              `  Retry error: ${error.message}\n`,
          );
        });
      }

      throw retryError;
    };

    try {
      return await crawl(crawlerOptions);
    } catch (error: any) {
      return retry(error);
    }
  }

  /**
   * Watch mode