Method render

libs/isr/server/src/isr-handler.ts:234–271

(
    req: Request,
    res: Response,
    next: NextFunction,
    config?: RenderConfig,
  )

  }

  async render(
    req: Request,
    res: Response,
    next: NextFunction,
    config?: RenderConfig,
  ): Promise<Response | void> {
    // TODO: remove this in a major as a BREAKING CHANGE
    if (config?.modifyGeneratedHtml) {
      if (this.isrConfig.modifyGeneratedHtml !== undefined) {
        console.warn(
          'You can only specify `modifyGeneratedHtml` once. The one in render function will be removed in the next version.',
        );
      }
      const patchedModifyFn: ModifyHtmlCallbackFn = (
        req: Request,
        html: string,
      ) => {
        return config.modifyGeneratedHtml?.(req, html) || html;
      };
      this.isrConfig['modifyGeneratedHtml'] = patchedModifyFn;
    }

    try {
      const result = await this.cacheGeneration.generate(
        req,
        res,
        config?.providers,
        'generate',
      );
      if (!result) {
        throw new Error('Error while generating the page!');
      } else {
        return res.send(result.html);
      }
    } catch (error) {
      next();
    }
  }
}

const extractDataFromBody = (