Alternative way of typing actions for dataPersistence when using NGRX 8

Expected Behavior

I can type action parameters on a less verbose way using ngrx 8 action creators creators.

Current Behavior

In order to be able to type my actions, so I can use their payload on the run/onError methods, I need to do ReturnType<typeof createCategoryDefinition> where createCategoryDefinition is

import { createAction, props } from '@ngrx/store';

export const createCategoryDefinition = createAction(
  '[Category Definitions/API] create category definition',
  props<{ creationData: CategoryDefinitionCreationData }>()
);

@Effect()
  createCategoryDefinitionEffect$ = this.dataPersistence.fetch<ReturnType<typeof createCategoryDefinition>>(
    createCategoryDefinition.type,
    {
      run: action => {
        return this.categoryDefinitionService
          .createCategoryDefinition(action.creationData)
          .pipe(
            map(categoryDefinition => createCategoryDefinitionSuccess({ categoryDefinition}))
          );
      },

      onError: (action, error) => {
        return createCategoryDefinitionFailure({ error });
      },
    }
  );

Is there maybe some other way to leverage typescript to ease the typing of said actions?

Context

Latest version of NX. Version 8.x of NGRX.

[ramarivera]

I tested the new schematics, but I have to either add the ReturnType<typeof actionCreator> to the generic argument for dataPersistence.fetch or add it to the id, run and onError callbacks.

@Injectable()
export class ProductsEffects {
  loadProducts$ = createEffect(() =>
    this.dataPersistence.fetch(ProductsActions.loadProducts, {
      run: (
        action: ReturnType<typeof ProductsActions.loadProducts>,
        state: ProductsPartialState
      ) => {
        // Your custom service 'load' logic goes here. For now just return a success action...
        return ProductsActions.loadProductsSuccess({ products: [] });
      },

      onError: (action: ReturnType<typeof ProductsActions.loadProducts>, error) => {
        console.error('Error', error);
        return ProductsActions.loadProductsFailure({ error });
      },
    })
  );
```

Isn't there a way `fetch` can pull the action type form the ActionCreator parameter?

[yinonov]

any progress on this?