Time-ProviderTime is a dependency.

import { createTimeProvider } from "@time-provider/core";
import { plugin } from "@time-provider/plugin-native";

const timeProvider = createTimeProvider.for(plugin).create();

class UserService {
  constructor(private readonly timeProvider: ITimeProvider<Date>) {}

  createUser() {
    return { createdAt: this.timeProvider.clock.utcNow() };
  }
}

import { createTimeProvider } from "@time-provider/core/deterministic";
import { plugin } from "@time-provider/plugin-native/deterministic";

using timeProvider = createTimeProvider
  .for(plugin)
  .asManual()
  .withInitialTime("2026-01-01T00:00:00.000Z")
  .create();

let retries = 0;
using handle = timeProvider.scheduler.timers.every({seconds: 1}, () => retries++);
timeProvider.clock.advance({ seconds: 3 });

expect(retries).toBe(3); // synchronous — no await, no real timers