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boris/node_modules/observable-hooks/src/use-observable-get-state.ts
Gigi 5d53a827e0 feat: initialize markr nostr bookmark client 
- Add project structure with TypeScript, React, and Vite
- Implement nostr authentication using browser extension (NIP-07)
- Add NIP-51 compliant bookmark fetching and display
- Create minimal UI with login and bookmark components
- Integrate applesauce-core and applesauce-react libraries
- Add responsive styling with dark/light mode support
- Include comprehensive README with setup instructions

This is a minimal MVP for a nostr bookmark client that allows users to
view their bookmarks according to NIP-51 specification.
2025-10-02 07:17:07 +02:00

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import { useDebugValue } from "react";
import { Observable } from "rxjs";
import { map } from "rxjs/operators";
import { useObservableState } from "./use-observable-state";
import { useObservable } from "./use-observable";
/**
* Gets the value at path of state. Similar to lodash `get`.
* Only changes of the resulted value will trigger a rerendering.
* Errors are thrown on unreachable path.
*
* @param state$ Output state.
*/
export function useObservableGetState<TState>(
state$: Observable<TState>,
initialState: TState | (() => TState)
): TState;
export function useObservableGetState<
TState,
TInitial extends null | undefined | void
>(state$: Observable<TState>, initialState: TInitial): TState | TInitial;
export function useObservableGetState<TState, A extends keyof TState>(
state$: Observable<TState>,
initialState: TState[A] | (() => TState[A]),
pA: A
): TState[A];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A
): TState[A] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A]
>(
state$: Observable<TState>,
initialState: TState[A][B] | (() => TState[A][B]),
pA: A,
pB: B
): TState[A][B];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B
): TState[A][B] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B]
>(
state$: Observable<TState>,
initialState: TState[A][B][C] | (() => TState[A][B][C]),
pA: A,
pB: B,
pC: C
): TState[A][B][C];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C
): TState[A][B][C] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C]
>(
state$: Observable<TState>,
initialState: TState[A][B][C][D] | (() => TState[A][B][C][D]),
pA: A,
pB: B,
pC: C,
pD: D
): TState[A][B][C][D];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D
): TState[A][B][C][D] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D]
>(
state$: Observable<TState>,
initialState: TState[A][B][C][D][E] | (() => TState[A][B][C][D][E]),
pA: A,
pB: B,
pC: C,
pD: D,
pE: E
): TState[A][B][C][D][E];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D,
pE: E
): TState[A][B][C][D][E] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E]
>(
state$: Observable<TState>,
initialState: TState[A][B][C][D][E][F] | (() => TState[A][B][C][D][E][F]),
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F
): TState[A][B][C][D][E][F];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F
): TState[A][B][C][D][E][F] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F]
>(
state$: Observable<TState>,
initialState:
| TState[A][B][C][D][E][F][G]
| (() => TState[A][B][C][D][E][F][G]),
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G
): TState[A][B][C][D][E][F][G];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G
): TState[A][B][C][D][E][F][G] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F],
H extends keyof TState[A][B][C][D][E][F][G]
>(
state$: Observable<TState>,
initialState:
| TState[A][B][C][D][E][F][G][H]
| (() => TState[A][B][C][D][E][F][G][H]),
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G,
pH: H
): TState[A][B][C][D][E][F][G][H];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F],
H extends keyof TState[A][B][C][D][E][F][G]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G,
pH: H
): TState[A][B][C][D][E][F][G][H] | TInitial;
export function useObservableGetState<
TState,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F],
H extends keyof TState[A][B][C][D][E][F][G],
I extends keyof TState[A][B][C][D][E][F][G][H]
>(
state$: Observable<TState>,
initialState:
| TState[A][B][C][D][E][F][G][H][I]
| (() => TState[A][B][C][D][E][F][G][H][I]),
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G,
pH: H,
pI: I
): TState[A][B][C][D][E][F][G][H][I];
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F],
H extends keyof TState[A][B][C][D][E][F][G],
I extends keyof TState[A][B][C][D][E][F][G][H]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G,
pH: H,
pI: I
): TState[A][B][C][D][E][F][G][H][I] | TInitial;
export function useObservableGetState<
TState,
TInitial extends null | undefined | void,
A extends keyof TState,
B extends keyof TState[A],
C extends keyof TState[A][B],
D extends keyof TState[A][B][C],
E extends keyof TState[A][B][C][D],
F extends keyof TState[A][B][C][D][E],
G extends keyof TState[A][B][C][D][E][F],
H extends keyof TState[A][B][C][D][E][F][G],
I extends keyof TState[A][B][C][D][E][F][G][H],
J extends keyof TState[A][B][C][D][E][F][G][H][I]
>(
state$: Observable<TState>,
initialState: TInitial,
pA: A,
pB: B,
pC: C,
pD: D,
pE: E,
pF: F,
pG: G,
pH: H,
pI: I,
pJ: J
): TState[A][B][C][D][E][F][G][H][I][J] | TInitial;
export function useObservableGetState<TState, TInit>(
state$: Observable<TState>,
initialState: TInit | (() => TInit),
...path: any[]
) {
const value = useObservableState(
useObservable(() =>
state$.pipe(map(state => path.reduce(getValue, state)))
),
initialState
);
useDebugValue(value);
return value;
}
function getValue<T, K extends keyof T>(obj: T, key: K): T[K] {
return obj[key];
}
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