feat: add signal method overloads to select nested keys #1662
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added
{ } State
edbzn
reviewed
Dec 24, 2023
| ) { | ||
| const destroyRef = inject(DestroyRef); | ||
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| const signalState = {} as SignalStateProxy<State>; | ||
| return new Proxy<SignalStateProxy<State>>(signalState, { | ||
| get<K extends keyof State>( | ||
| target: SignalStateProxy<State>, | ||
| p: K | string | symbol |
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Why removing the generic and union type here?
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| export type SignalStateProxy<State extends object> = { | ||
| [K in keyof State]: Signal<State[K]>; | ||
| }; | ||
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| export function createSignalStateProxy<State extends object>( | ||
| state$: Observable<State>, | ||
| stateFn: <K extends keyof State>(k: K) => State[K] | ||
| stateFn: RxState<State>['get'] |
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Could you explain the type change here? I'm not sure why stateFn becomes type of RxState.get
| /** | ||
| * @internal | ||
| */ | ||
| signal<R>(...args: string[]): Signal<R> { |
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What about naming it keys instead of args?
| state$ | ||
| .pipe(select(p as K), takeUntilDestroyed(destroyRef)) | ||
| .pipe(select(...(keyFields as [any])), takeUntilDestroyed(destroyRef)) |
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Not sure why we dropped the generic cast in favor of [any]?
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Enables signal method overloads 🚀
I went with this approach:
TODO: add docs
Fixes #1659
cc @hoebbelsB @edbzn