Hi, how can i handle supertokens error? I have a middleware that needs to detect an error from supertokens and get the status and message fields.

Hey which SDK and framework are you using?

supertokens-node v10.0.1 @middy/core v3.1.0 aws lambda

right. So you can do something like this:

ts
import { Error as STError } from "supertokens-node"

let err: any;
if (STError.isErrorFromSuperTokens(err)) {
    let {fromRecipe, message, payload, type} = err;
}

ok thanks

yea. You can. But those are not really generic errors. For those, you want to handle them by informing the user about what went wrong.

Yes but I would like to modify the response body on error cases

Depends on how you want to modify the response body. Im not really sure what you are trying to do here.

.after((request) => {
    const response = request.response as APIGatewayProxyResult;
    const body = JSON.parse(response.body);

    if (body.status !== 'OK') {
      throw new SuperTokensError(body);
    }
  })
  .onError((request) => {
    log('ERROR:: authentication::', request.error);
    const handledError = handleError(request.error);
    request.response = errorResponse(handledError.statusCode, handledError);
  });

Basically I'm converting the non ok response from Supertokens to a custom error class. So I can add new fields in the response and change the status code

I see. Yea. All successful will have OK result

OK thank you!