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update bool factory

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This commit is contained in:
Dan Percic 2022-02-02 14:27:17 +02:00
parent b662479794
commit b808e4661e
1 changed files with 2 additions and 1 deletions
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src/lib/utils/operators.ts
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@ -28,8 +28,9 @@ export function shareDistinctLast<T>(values = 1): UnaryFunction<Observable<T>, O
export const toLengthValue = (entities: unknown[]): number => entities?.length ?? 0; export const toLengthValue = (entities: unknown[]): number => entities?.length ?? 0;
export const getLength = pipe(map(toLengthValue), distinctUntilChanged()); export const getLength = pipe(map(toLengthValue), distinctUntilChanged());
export function boolFactory<T>(obs: Observable<T>, project: (value: T) => boolean): Observable<boolean>[] { export function boolFactory<T = boolean>(obs: Observable<T>, project: (value: T) => boolean = value => !!value): Observable<boolean>[] {
const result = obs.pipe(map(project), shareDistinctLast()); const result = obs.pipe(map(project), shareDistinctLast());
const inverse = result.pipe( const inverse = result.pipe(
map(value => !value), map(value => !value),
shareDistinctLast(), shareDistinctLast(),