import type { LicenseResult } from '@vizor-vr/shared';
/**
 * Check whether a standalone license key is a master key (→ enterprise features).
 *
 * A master key is an ordinary server-signed license whose verified payload tier
 * is `'master'`. It is verified against the pinned trusted public key exactly
 * like any other license — a REAL Ed25519 signature is required.
 *
 * SECURITY: the previous implementation granted enterprise on two plain
 * string-equality checks (`tier === 'master'` and `payload.publicKey === masterPubKey`)
 * with NO signature verification, so anyone who knew the master public key could
 * self-sign a master license. That bypass is gone.
 *
 * @returns an enterprise `LicenseResult`, or `null` if this is not a validly
 *          signed master key, or if the key is expired / not licensed for the
 *          current domain.
 */
export declare function checkMasterKey(licenseKey: string): Promise<LicenseResult | null>;
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