mapSchedule - API reference

API reference › @evolu/common › Schedule › mapSchedule

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

Defined in: packages/common/src/Schedule.ts:1402

Transforms the output of a schedule.

The delay (second tuple element) remains unchanged.

Mapping schedule output

import {
  assertOk,
  exponential,
  mapSchedule,
  testCreateDeps,
  type Millis,
} from "@evolu/common";

const schedule = mapSchedule((delay: Millis) => ({
  delay,
  doubled: delay * 2,
}))(exponential("100ms"));
const step = schedule(testCreateDeps());
assertOk(step(undefined), [{ delay: 100, doubled: 200 }, 100]);