export function ngExpressEngine()

in modules/express-engine/src/main.ts [33:68]
31 lines of code
9 McCabe index (conditional complexity)

export function ngExpressEngine(setupOptions: Readonly<NgSetupOptions>) {
  const engine = new CommonEngine(setupOptions.bootstrap, setupOptions.providers);

  return function (
    filePath: string,
    options: object,
    callback: (err?: Error | null, html?: string) => void,
  ) {
    try {
      const renderOptions = { ...options } as RenderOptions;
      if (!setupOptions.bootstrap && !renderOptions.bootstrap) {
        throw new Error('You must pass in a NgModule to be bootstrapped');
      }

      const req = renderOptions.req;
      const res = renderOptions.res || req.res;

      renderOptions.url =
        renderOptions.url || `${req.protocol}://${req.get('host') || ''}${req.originalUrl}`;
      renderOptions.documentFilePath = renderOptions.documentFilePath || filePath;
      renderOptions.providers = [...(renderOptions.providers || []), getReqResProviders(req, res)];
      // eslint-disable-next-line @typescript-eslint/no-unused-expressions
      (renderOptions.publicPath =
        renderOptions.publicPath ?? setupOptions.publicPath ?? (options as any).settings?.views),
        (renderOptions.inlineCriticalCss =
          renderOptions.inlineCriticalCss ?? setupOptions.inlineCriticalCss);

      engine
        .render(renderOptions)
        .then((html) => callback(null, html))
        .catch(callback);
    } catch (err) {
      callback(err);
    }
  };
}