Typescript error with createMidleware function

[Renato Hormazabal]

Hi everybody!

I started to work with the new typescript integration (I'm using Express), and I got an error with the createMidleware function

theapp variable is defined as Express.Application,

TS Error:
Type 'Application' is missing the following properties from type 'TApp': setTimeout, maxHeadersCount, timeout, headersTimeout, and 9 more.ts(2740)

Should I change the typing of the application?

thanks you!

[Tobias Deekens]

Thanks for opening.

TApp just extends Server from http. What are you passing in? Otherwise you could also get away with casting it. https://github.com/tdeekens/promster/blob/main/packages/express/modules/middleware/middleware.ts#L16

[Renato Hormazabal]

I'm using an express application:

const applyMiddleware = ({ app, path, regexPath, rewritePath }: PrometheusConfig) => {
  app.use(createMiddleware({
    app,
    options: {
      normalizePath: (originalpath) => {
        if (regexPath && !!regexPath.exec(originalpath)) {
          return rewritePath || 'customPath';
        }
        return originalpath;
      },
    },
  }));
...
}

export declare interface PrometheusConfig {
  app: express.Application;
  path: string;
  regexPath?: RegExp;
  rewritePath?: string;
}

and I use it:

const app = express();
const appProm = applyMiddleware({ app, path: promPath });

PD: I can't cast to TApp, because it doesn't export :(

[Tobias Deekens]

Would it help you if we'd export it? Maybe try it with a fork. If it works I'd be happy to see a PR.

[Renato Hormazabal]

exporting the class did not work, but if a change in the type of TApp, what do you think?

#500

[Tobias Deekens]

Awesome. Thanks for contributing.

[Tobias Deekens]

Will be published from CI.

[Renato Hormazabal]

thank you @tdeekens 👍 now is working fine 🥇