[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) › delays

```ts
function delays<Output, Input>(
  schedule: Schedule<Output, Input>,
): Schedule<
  number &
    Brand<"Int"> &
    Brand<"NonNegative"> &
    Brand<"LessThan281474976710655"> &
    Brand<"Millis">,
  Input
>;
```

Defined in: [packages/common/src/Schedule.ts:1121](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Schedule.ts#L1121)

Outputs the delay between recurrences.

Wraps a schedule to output its delay (in milliseconds) instead of the
original output. Useful for monitoring or logging delay patterns.

### Example

```ts
// Monitor exponential delays
const monitorDelays = delays(exponential("100ms"));
// Outputs: 100, 200, 400, 800, ... (the delays themselves)

// Log delays for debugging
const logged = tapScheduleOutput(console.log)(delays(exponential("100ms")));
```