pipeline/packages/shared/src/utils/timezone.ts

// Node-only: reads `process.env`. Re-exported via `@pipeline/shared/node`,
// never from the client-safe main barrel.
import { DEFAULT_TIMEZONE } from "./date.js";

/**
 * Timezone used for every displayed and folder date. Defaults to Asia/Shanghai
 * (correct for a Beijing-daily product regardless of the host/container clock);
 * override with the `TIMEZONE` env var (e.g. `TIMEZONE=America/Los_Angeles`).
 */
export function getTimezone(): string {
  return process.env.TIMEZONE || DEFAULT_TIMEZONE;
}