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- const modal$ = merge(
- show$.pipe(mapTo(true)),
- hide$.pipe(mapTo(false)),
- toggle$.pipe(mapTo(null))
- ).pipe(
- startWith(false),
- scan((acc, curr) => {
- if (curr === null) {
- return !acc;
- } else {
- return curr;
- }
- })
- );
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