export interface RepairMaterial {
    item: string;
    perPoint: number;
}
export interface RepairSpec {
    materials: readonly RepairMaterial[];
    station?: string;
    qualityLossPerRepair?: number;
}
export interface DurabilitySpec {
    max: number;
    wearPerUse?: number;
    wearPerHit?: number;
    disableAtZero?: boolean;
    repair?: RepairSpec;
}
export interface DurabilityState {
    current: number;
    max: number;
}
export type WearKind = "use" | "hit";
export interface RepairCost {
    item: string;
    count: number;
}
export interface RepairQuote {
    materials: readonly RepairCost[];
    restored: number;
    state: DurabilityState;
}
export declare function createDurability(spec: DurabilitySpec): DurabilityState;
export declare function durabilityFraction(state: DurabilityState): number;
export declare function isBroken(state: DurabilityState): boolean;
export declare function isDisabled(spec: DurabilitySpec, state: DurabilityState): boolean;
export declare function wearAmount(spec: DurabilitySpec, kind: WearKind): number;
/**
 * Apply wear to an item, tracking breakage and repair eligibility.
 *
 * @capability durability track item wear, breakage, and repair
 */
export declare function applyWear(state: DurabilityState, amount: number): DurabilityState;
export declare function wear(spec: DurabilitySpec, state: DurabilityState, kind: WearKind, times?: number): DurabilityState;
export declare function canRepairAt(spec: DurabilitySpec, stationId?: string): boolean;
export declare function repairQuote(spec: DurabilitySpec, state: DurabilityState, options?: {
    to?: number;
    station?: string;
}): RepairQuote | null;
export interface DurabilityTracker {
    init(instanceId: string, spec: DurabilitySpec): DurabilityState;
    get(instanceId: string): DurabilityState | null;
    set(instanceId: string, state: DurabilityState): void;
    wear(instanceId: string, spec: DurabilitySpec, kind: WearKind, times?: number): DurabilityState | null;
    isDisabled(instanceId: string, spec: DurabilitySpec): boolean;
    remove(instanceId: string): void;
}
export declare function createDurabilityTracker(): DurabilityTracker;