export interface CosmeticLoadoutDef {
    slots: Record<string, string>;
}
export interface CosmeticsChangedEvent {
    userId: string;
    slots: Record<string, string>;
}
export interface CosmeticsEvents {
    emit(name: "cosmetics.changed", payload: CosmeticsChangedEvent): void;
}
export interface CosmeticsDeps {
    events?: CosmeticsEvents;
}
export interface Cosmetics {
    register(defs: Record<string, CosmeticLoadoutDef>): void;
    has(loadoutId: string): boolean;
    apply(userId: string, loadoutId: string): {
        reason: string;
    } | null;
    equip(userId: string, slot: string, cosmeticId: string | null): void;
    get(userId: string): Readonly<Record<string, string>>;
    snapshot(userId: string): Record<string, string>;
    hydrate(userId: string, state: Record<string, string>): void;
    /** Snapshot every user's equipped slots for a whole-world save. */
    snapshotAll(): Record<string, Record<string, string>>;
    /** Restore every user's equipped slots from a {@link snapshotAll} payload. */
    hydrateAll(state: Record<string, Record<string, string>>): void;
}
/**
 * Equip cosmetic skins and customizations by slot, independent of gameplay stats.
 *
 * @capability cosmetics equip cosmetic skins and customizations by slot
 */
export declare function createCosmetics(deps?: CosmeticsDeps): Cosmetics;