import type { GameModelAPI } from '../domains/gameModel.js';
import type { Scalars } from '../generated/graphql.js';
import type { KitInvokePolicy } from './blueprints/index.js';
/**
 * Runtime **monetization** helpers — the app feature/tier surface in shop
 * terms. Features are string keys (`'vip'`, `'land_owner'`, `'battle_pass'`)
 * defined per app and granted to **access tiers** (the management-side
 * `appAccess` tiers players buy/hold); any model function whose policy
 * carries a `tier_feature` leaf then admits only players on a granted tier.
 *
 * Gate blueprint functions by composing {@link gate} (=`featureGate`) into a
 * builder's `*policyExtra` option, e.g.
 * `plotBlueprint({ buyPolicyExtra: kit.features.gate('land_owner') })`.
 *
 * All methods require the app-admin `manage_apps` permission.
 *
 * Obtained via `client.kit(appId).features`.
 */
export declare class FeaturesKit {
    private readonly appId;
    private readonly gameModel;
    constructor(appId: Scalars['BigInt']['input'], gameModel: GameModelAPI);
    /** Define (or re-describe) a feature key for the app. */
    define(featureKey: string, description?: string): Promise<{
        __typename?: "GmAppFeature";
        appId: string;
        featureKey: string;
        description: string | null;
    }>;
    /** List the app's defined feature keys. */
    list(): Promise<{
        __typename?: "GmAppFeature";
        appId: string;
        featureKey: string;
        description: string | null;
    }[]>;
    /** Grant a feature to an access tier (its holders pass `tier_feature` checks). */
    grantToTier(tierId: Scalars['BigInt']['input'], featureKey: string): Promise<{
        __typename?: "GmTierFeature";
        appId: string;
        tierId: string;
        featureKey: string;
    }>;
    /** Revoke a feature from an access tier. */
    revokeFromTier(tierId: Scalars['BigInt']['input'], featureKey: string): Promise<boolean>;
    /** List tier→feature grants (optionally for one tier). */
    tierFeatures(tierId?: Scalars['BigInt']['input']): Promise<{
        __typename?: "GmTierFeature";
        appId: string;
        tierId: string;
        featureKey: string;
    }[]>;
    /**
     * A `tier_feature` policy leaf for `feature` — pass it to any blueprint
     * builder's `*policyExtra` option to monetization-gate that function.
     * (Also exported standalone as `featureGate`.)
     */
    gate(feature: string): KitInvokePolicy;
}
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