Time-Provider

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Day.js ​

bash
npm install @time-provider/core @time-provider/plugin-dayjs
ts
// production
import { createTimeProvider } from "@time-provider/core";
import { plugin } from "@time-provider/plugin-dayjs";

const timeProvider = createTimeProvider.for(plugin).withTimezone("America/New_York").create();

timeProvider.clock.utcNow(); // dayjs.Dayjs, in UTC
timeProvider.clock.localNow(); // dayjs.Dayjs, in America/New_York
ts
// tests — same date type, from the /deterministic subpath
import { createTimeProvider } from "@time-provider/core/deterministic";
import { plugin } from "@time-provider/plugin-dayjs/deterministic";

const timeProvider = createTimeProvider.for(plugin).asFixed().withFixedTime(0).create();
  • Date type: dayjs.Dayjs.
  • Peer dependency: dayjs (the plugin itself extends it with dayjs/plugin/utc and dayjs/plugin/timezone).
  • Timezone support: full — ISystemPlugin/ITimeProvider (or IDeterministicPlugin on the /deterministic side), real IANA zones via .withTimezone(...)/clock.localNow().

Pick this if your codebase already uses Day.js for its small footprint and Moment-like API.