How to construct API with 20+ route handlers?

[jpaju]

Hi! Thanks for creating such awesome library for Typescript 🙏

I have an backend API where I need to have 20 or more endpoints in a single server. I'm able to define the endpoints just fine, using a couple of ApiGroups. However when trying to implement the endpoints by defining handlers for them as shown in the docs:

const api = Api.make().pipe(Api.addGroup(apiGroup1), Api.addGroup(apiGroup2));

RouterBuilder.make(api).pipe(
  RouterBuilder.handle("group1-endpoint1", request => /* handler logic */),
  // ... other 18 handlers
  RouterBuilder.handle("group2-endpoint10", request => /* handler logic */),
  RouterBuilder.build
)

I'm unable to do so because .pipe only accepts 20 arguments and I get a compilation error Expected 1-20 arguments, but got 21.

Ideally I would just define handlers for each ApiGroup separately and then combine handlers/RouterBuilders for each group, something like this (totally imaginary syntax/API in this example) :

const routerBuilder1 = RouterBuilder.make(apiGroup1).pipe(
  RouterBuilder.handle("group1-endpoint1", request => /* handler logic */),
  // ...
)

const routerBuilder2 = RouterBuilder.make(apiGroup2).pipe(
  RouterBuilder.handle("group2-endpoint1", request => /* handler logic */),
  // ... 10 or so handlers
)

RouterBuilder.combine(routerBuilder1, routerBuilder2).pipe(RouterBuilder.build) // Something like this to compose all builders together

How could I circumvent this limitation and create handlers for over 20 routes?

[sukovanej]

Hey, good point 👍. I added RouterBuilder.merge.

const app = RouterBuilder.merge(routerBuilder1, routerBuilder2).pipe(RouterBuilder.build)

// or

const app = routerBuilder1.pipe(
  RouterBuilder.merge(routerBuilder2),
  RouterBuilder.merge(routerBuilder3),
  ...,
  RouterBuilder.build
)

You can use check the tests or docs

[jpaju]

Awesome, thanks a lot! 🚀