# LicenseExpiry Interface

Describes when a license entitlement stops being valid.

date is kept as a calendar string rather than an epoch, and is INCLUSIVE of its last valid day:

kind === 'usage': compared against the current instant in UTC. An earlier revision of the key spec called for the client's LOCAL calendar date; that was reversed, because the offline check and a future online check have to return the same verdict for the same key at the same instant, and any rule that reads a local clock breaks that parity. The practical cost is that a customer far west of UTC loses the tail of their last local day.
kind === 'release': compared against the library's build date; no clock is involved, which is what keeps an air-gapped install with a wrong system clock working.
kind === 'none': the entitlement does not expire.

# Properties

• date: string | null

ISO 'YYYY-MM-DD', or null when kind is 'none'.

• graceDays: number

• kind: "usage" | "release" | "none"

• noticeDays: number