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| const registration = await navigator.serviceWorker.getRegistration( | ||
| "/firebase-cloud-messaging-push-scope", | ||
| ); |
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일부 브라우저 환경(예: 보안되지 않은 컨텍스트(HTTP) 또는 특정 브라우저의 프라이빗 모드)에서는 navigator.serviceWorker가 정의되지 않을 수 있습니다. 이로 인해 발생할 수 있는 런타임 에러를 방지하기 위해 serviceWorker 지원 여부를 먼저 확인하는 안전장치를 추가하는 것이 좋습니다.
const registration = "serviceWorker" in navigator
? await navigator.serviceWorker.getRegistration(
"/firebase-cloud-messaging-push-scope",
)
: undefined;
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