decodeJwtExpiryEpochSeconds — @gj-kit/expo-auth

@gj-kit/expo-auth에서 공개하는 function입니다. package version 0.1.1의 release declaration을 그대로 표시합니다.

검증된 import 예제

import { decodeJwtExpiryEpochSeconds } from '@gj-kit/expo-auth';

시그니처, 매개변수, 반환 타입

/**
 * ⚠ **This is a payload decode WITHOUT signature verification.** It base64url-decodes the
 * payload and reads the `exp` claim; it guarantees nothing about the token's authenticity or
 * integrity. It exists solely as a proactive-refresh scheduling hint — never use it for
 * authorization decisions or as a trust boundary. The worst a forged `exp` can cause is a
 * mistimed refresh, and the reactive 401 path is the safety net for that (§7-1).
 *
 * Corrupt or non-JWT input returns `null` without throwing (H13).
 */
declare function decodeJwtExpiryEpochSeconds(token: string): number | null;

이 선언은 매개변수, optionality, 제네릭, 반환값, 공개 union/type 계약의 정본입니다. 호출 전 필요한 환경·권한·오류 경계는 패키지 Golden path와 이 subpath의 import 조건을 함께 확인하세요.

Release context

• 패키지: @gj-kit/expo-auth
• 버전: 0.1.1
• 공개 entry: .
• 소스: GitHub

구현 주석

⚠ This is a payload decode WITHOUT signature verification. It base64url-decodes the payload and reads the exp claim; it guarantees nothing about the token’s authenticity or integrity. It exists solely as a proactive-refresh scheduling hint — never use it for authorization decisions or as a trust boundary. The worst a forged exp can cause is a mistimed refresh, and the reactive 401 path is the safety net for that (§7-1).

Corrupt or non-JWT input returns null without throwing (H13).