How to migrate from an existing express project?

[hunght]

• As the question. we have an existing express project with a lot of things going on, what is a strategy to do it little by little cause we can't have the effort to do it one time? Thanks for the awesome works

[RobinTail]

Hello @hunght ,

I'd recommend the following migration strategy.

1. Install express-zod-api and use attachRouting() method with your existing express app as shown in the following example:
   https://github.com/RobinTail/express-zod-api#connect-to-your-own-express-app
2. Make sure that it still works with an empty routing object, consider replacement of the your 404-handler (if any) to the one returned by attachRouting().
3. Here begins the iterative process of migrating your endpoints one by one.
   a. Use the documentation and examples to create a copy of one of your endpoint handler using express-zod-api methods, factories, endpoints builders, middlewares and so on.
   b. Remove the pointer of your original endpoint from your original express routing.
   c. Add the pointer of your newly created endpoint to the routing object used by attachRouting().
   d. Make sure that the new copy is now operating.
   e. Make sure that it works as expected (run your tests if any).
   f. Remove the original implementation of the endpoint. Now it has been migrated to express-zod-api.
4. When all endpoints migrated, consider switching to createServer() instead of attachRouting in case it turned out that your app became simpler.

[hunght]

Hi @RobinTail I made a PR for that #652 pls help check. Thank you

[RobinTail]

and any keyword is everywhere

@hunght , thank you for your efforts, but the problem you're trying to fix is not within the library.

[hunght]

okay thank for take time on this @RobinTail

[elmeister]

@RobinTail I believe we have the same issue and it is also mentioned in #695.
The impact of having not working API endpoint is way more problematic than incorrect type in it, an option to be able to still proceed with response is critical for us.

[RobinTail]

@elmeister , #695 (reply in thread)