Function sequential

sequential<T extends Durations>(
durs: T,
): {
[K in string | number | symbol]: { at: Num; dur: ResolvedField<T[K]> }
}
Cumulative-start helper: each clip's at is the reactive sum of prior durations (RO). Use timeline() directly for draggable starts.
```
 timeline(sequential({ intro: 0.7, hold: 1.2, outro: 0.5 }));
```
Type Parameters
- T extends Durations
Parameters
- durs: T
Returns { [K in string | number | symbol]: { at: Num; dur: ResolvedField<T[K]> } }
- Defined in src/ext/timeline.ts:142