PACKAGE_AVAILABILITY_CODES: Readonly<
    {
        MISSING_DEPENDENCY: 6;
        MISSING_SYSTEM: 5;
        REQUIRES_CORE_DOWNGRADE: 7;
        REQUIRES_CORE_UPGRADE_STABLE: 8;
        REQUIRES_CORE_UPGRADE_UNSTABLE: 9;
        REQUIRES_DEPENDENCY_UPDATE: 10;
        UNKNOWN: 0;
        UNVERIFIED_BUILD: 2;
        UNVERIFIED_GENERATION: 4;
        UNVERIFIED_SYSTEM: 3;
        VERIFIED: 1;
    },
> = ...

Encode the reasons why a package may be available or unavailable for use