| 68 | |
| 69 | @Injectable() |
| 70 | export class CounterService { |
| 71 | readonly increment = new Subject<void>(); |
| 72 | readonly decrement = new Subject<void>(); |
| 73 | |
| 74 | private readonly state = rxState<{ count: number }>(({ connect, set }) => { |
| 75 | set({ count: 0 }); |
| 76 | connect( |
| 77 | 'count', |
| 78 | merge( |
| 79 | this.increment.pipe(map(() => 1)), |
| 80 | this.decrement.pipe(map(() => -1)) |
| 81 | ), |
| 82 | ({ count }, slice) => count + slice |
| 83 | ); |
| 84 | }); |
| 85 | |
| 86 | readonly count$ = this.state.select('count'); |
| 87 | } |
| 88 | |
| 89 | const testScheduler = new TestScheduler(jestMatcher); |
| 90 | |