NotificationRecipientLiveness — @gj-kit/nest-notifications

A public interface from @gj-kit/nest-notifications/core. The signature below is taken directly from the 0.1.1 release declaration.

Verified import example

import { NotificationRecipientLiveness } from '@gj-kit/nest-notifications/core';

Signature, parameters, and return type

/**
 * ingress·계정 수명주기 포트와 의무 I1–I3 · L1–L4 (설계 §3.3.6).
 *
 * 파이프라인은 이 파일의 어떤 메서드도 호출하지 않는다. 그런데도 `./core`에 있는 이유는
 * 이 패키지의 첫 보증(G1: ingress 멱등)과 유일한 "개인정보 사고" 등급 보증(G7: tombstone
 * 이후 배달 0)이 전적으로 이 두 포트 위에 서 있기 때문이다. 라이브러리가 이 의무를 강제할
 * 수 없다는 사실도 그대로 적는다 — 강제하는 것은 `./testing`의 적합성 케이스뿐이다.
 */
/**
 * Recipient lifecycle barrier. The library calls neither method: staging calls
 * `ensureLive` from the host publisher, and account deletion calls `tombstone`
 * from the host lifecycle.
 *
 * `notificationRecipientKey(applicationKey, recipientRef)` is the intended key
 * for the tombstone row: it lets an implementation retain the barrier after a
 * purge without retaining the raw recipient reference.
 *
 * Obligations (design 3.3.6):
 *
 * - **I2** — `stage` calls `ensureLive` inside its own transaction, before the
 *   insert, and writes nothing when it returns false. Acquiring - not merely
 *   reading - is what makes stage and purge serialise against each other.
 * - **L3** — the tombstone row survives the purge that follows it. Delete it and
 *   a late `ensureLive` returns true, so a deleted account starts receiving
 *   notifications again.
 */
interface NotificationRecipientLiveness<Transaction = unknown> {
    /**
     * Acquires the recipient gate inside this transaction and returns false once
     * the ref is tombstoned (I2).
     */
    ensureLive(transaction: Transaction, applicationKey: string, recipientRef: string): Promise<boolean>;
    /** Marks deletion. The tombstone row must survive the purge that follows (L3). */
    tombstone(transaction: Transaction, applicationKey: string, recipientRef: string): Promise<void>;
}

This declaration is the source of truth for parameters, optionality, generics, return values, and public union/type contracts. Check the package golden path and this subpath’s import conditions for required environment, permission, and error boundaries before calling it.

Release context

• Package: @gj-kit/nest-notifications
• Version: 0.1.1
• Public entry: ./core
• Source: GitHub