@hey-api/angular-client. Not generating with Observable response

[MichaelTScott]

Hi, unsure where best to raise I've had a hunt around and can't find an answer but I suspect it might be a configuration issue:

@hey-api/openapi-ts: 0.85.0
@angular: 20.3.2
openapi spec: 3.1.0

using the legacy/angular client I get as expected function definitions with Observable<...> return type

However using '@hey-api/client-angular' the response type is always RequestResult type aka a Promise
I'd rather not have to wrap service calls everywhere to convert promises to observables

config:

export default default defineConfig({
  input: ...,
  output: ...,
  plugins: [
    '@hey-api/client-angular'
    {
      useClass: true,
      name: '@hey-api/sdk
    }
  ]
});

[dosubot]

Hi @MichaelTScott! I'm Dosu and I’m helping the openapi-ts team.

The new @hey-api/client-angular plugin generates service methods that return a RequestResult (Promise) by design, not Observable. Unlike the deprecated legacy/angular client, there is currently no configuration option to switch the response type to Observable in the new client. This is confirmed in the official documentation and migration notes, which highlight that Observable support is not available or configurable at this time, and the Promise-based approach is intentional for the beta release docs migration.

If you need Observable responses, you’ll have to manually wrap Promises with from() or similar RxJS utilities for now. The Angular client is still in beta, so its interface may change—monitor updates if Observable support is critical for your workflow. For more details, see the Angular client documentation.

To reply, just mention @dosu.

---

^{How did I do? Good | Irrelevant | Incorrect | Verbose | Hallucination | Report 🐛 | Other}   

[MichaelTScott]

@dosu

I can't actually see any mention of Observable support or lack thereof in either the docs or the migration notes - can you quote me the relevant section

[dosubot]

You're right—there isn't any explicit mention in the docs or migration notes about Observable support or lack thereof for @hey-api/client-angular. The documentation describes features, configuration, and usage, but does not state anywhere that Observables are (or are not) supported, nor does it provide an option to configure the response type as Observable. For example, the docs say:

"The Angular client for Hey API generates a type-safe client from your OpenAPI spec, fully compatible with validators, transformers, and all core features."

"Angular client is currently in beta. The interface might change before it becomes stable."

source

Configuration examples show how to generate class-based services and use @Injectable, but do not mention Observables or changing the response type from Promise to Observable:

"If you prefer to use the @Injectable() decorators, set the asClass option in your SDK plugin to true."

source

So, the absence of any mention of Observable support or configuration is itself the answer: the current docs only describe Promise-based responses, and Observable support is neither documented nor configurable at this time.

To reply, just mention @dosu.

---

^{How did I do? Good | Irrelevant | Incorrect | Verbose | Hallucination | Report 🐛 | Other}   

[mrlubos]

@max-scopp thoughts?