[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Schedule](https://evolu.dev/docs/api-reference/common/Schedule) › mapSchedule

```ts
function mapSchedule<A, B>(
  f: (a: A) => B,
): <Input>(schedule: Schedule<A, Input>) => Schedule<B, Input>;
```

Defined in: [packages/common/src/Schedule.ts:969](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Schedule.ts#L969)

Transforms the output of a schedule.

The delay (second tuple element) remains unchanged.

### Example

```ts

const schedule = mapSchedule((delay) => ({
  delay,
  doubled: delay * 2,
}))(exponential("100ms"));
```