Interface PushManager

interface PushManager {
    isPushBlocked(): boolean | undefined;
    isPushPermissionGranted(): boolean | undefined;
    isPushSupported(): boolean | undefined;
    registerPush(
        successCallback?: (
            endpoint: string,
            publicKey: string,
            userAuth: string,
        ) => void,
        deniedCallback?: (temporaryDenial: boolean) => void,
    ): void;
    unregisterPush(
        successCallback?: () => void,
        errorCallback?: () => void,
    ): void;
}